add support for SQLite as an alternative database backend

Implement SQLite support using the pure Go `modernc.org/sqlite` driver and update the migration system to handle driver-specific schemas. Users can now choose between MySQL and SQLite by setting the `DB_DRIVER` environment variable.

.env.example

@@ -1,17 +1,34 @@
 # Server Settings
 PORT=8080
 
-# DB Settings (usato per sviluppo locale; in Docker il DSN è costruito dal compose)
+# Infrastruttura Docker (Traefik + MySQL)
+API_DOMAIN=api.esempio.com
+ACME_EMAIL=tua@email.com
+MYSQL_ROOT_PASSWORD=password-sicura
+
+# DB Settings
+# DB_DRIVER: "mysql" (default) o "sqlite"
+DB_DRIVER=mysql
+
+# MySQL
 DB_DSN=root:secret@tcp(127.0.0.1:3306)/emly?parseTime=true&loc=UTC
 DB_MAX_OPEN_CONNS=25
 DB_MAX_IDLE_CONNS=5
 DB_CONN_MAX_LIFETIME=5
 DATABASE_NAME=emly
 
+# SQLite (usare invece di MySQL: DB_DRIVER=sqlite, DB_DSN=./data.db, DATABASE_NAME non necessario)
+# DB_DSN=./data.db
+
 # API Keys
 API_KEY=key-one
 ADMIN_KEY=admin-key-one
 
+# Rate Limiting — Traefik edge (condiviso tra repliche)
+TRAEFIK_RL_AVERAGE=30
+TRAEFIK_RL_BURST=10
+TRAEFIK_RL_PERIOD=1m
+
 # Rate Limiting — App (unauthenticated: no X-API-Key / X-Admin-Key)
 RL_UNAUTH_MAX_REQS=10
 RL_UNAUTH_WINDOW=5m
@@ -23,12 +40,3 @@ RL_AUTH_MAX_REQS=100
 RL_AUTH_WINDOW=1m
 RL_AUTH_MAX_FAILS=20
 RL_AUTH_BAN_DUR=5m
-
-# Cloudflare R2 Storage
-USE_S3_COMPATIBLE_STORAGE=false
-CF_ACCOUNT_ID=your-cloudflare-account-id
-CF_R2_ACCESS_KEY_ID=your-r2-access-key-id
-CF_R2_SECRET_ACCESS_KEY=your-r2-secret-access-key
-CF_R2_BUCKET_NAME=your-bucket-name
-CF_R2_REGION=auto
-CF_R2_ENDPOINT=https://your-endpoint.r2.cloudflarestorage.com

.gitignore

@@ -39,3 +39,6 @@ go.work.sum
 tmp/
 
 build/
+
+# Database files
+*.db

docker-compose.yml

@@ -13,21 +13,6 @@ services:
       DB_MAX_OPEN_CONNS: ${DB_MAX_OPEN_CONNS:-25}
       DB_MAX_IDLE_CONNS: ${DB_MAX_IDLE_CONNS:-5}
       DB_CONN_MAX_LIFETIME: ${DB_CONN_MAX_LIFETIME:-5}
-      RL_UNAUTH_MAX_REQS: ${RL_UNAUTH_MAX_REQS:-10}
-      RL_UNAUTH_WINDOW: ${RL_UNAUTH_WINDOW:-5m}
-      RL_UNAUTH_MAX_FAILS: ${RL_UNAUTH_MAX_FAILS:-5}
-      RL_UNAUTH_BAN_DUR: ${RL_UNAUTH_BAN_DUR:-15m}
-      RL_AUTH_MAX_REQS: ${RL_AUTH_MAX_REQS:-100}
-      RL_AUTH_WINDOW: ${RL_AUTH_WINDOW:-1m}
-      RL_AUTH_MAX_FAILS: ${RL_AUTH_MAX_FAILS:-20}
-      RL_AUTH_BAN_DUR: ${RL_AUTH_BAN_DUR:-5m}
-      USE_S3_COMPATIBLE_STORAGE: ${USE_S3_COMPATIBLE_STORAGE:-false}
-      CF_ACCOUNT_ID: ${CF_ACCOUNT_ID}
-      CF_R2_ACCESS_KEY_ID: ${CF_R2_ACCESS_KEY_ID}
-      CF_R2_SECRET_ACCESS_KEY: ${CF_R2_SECRET_ACCESS_KEY}
-      CF_R2_BUCKET_NAME: ${CF_R2_BUCKET_NAME}
-      CF_R2_REGION: ${CF_R2_REGION:-auto}
-      CF_R2_ENDPOINT: ${CF_R2_ENDPOINT}
     volumes:
       - logs:/logs
     logging:

go.mod

@@ -3,11 +3,6 @@ module emly-api-go
 go 1.26
 
 require (
-	github.com/aws/aws-sdk-go-v2 v1.41.7
-	github.com/aws/aws-sdk-go-v2/config v1.32.18
-	github.com/aws/aws-sdk-go-v2/credentials v1.19.17
-	github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.19
-	github.com/aws/aws-sdk-go-v2/service/s3 v1.101.0
 	github.com/go-chi/chi/v5 v5.2.4
 	github.com/go-chi/httprate v0.14.1
 	github.com/go-sql-driver/mysql v1.8.1
@@ -16,21 +11,16 @@ require (
 )
 
 require (
-	github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.10 // indirect
-	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.23 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.23 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.23 // indirect
-	github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.24 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.9 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.15 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.23 // indirect
-	github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.23 // indirect
-	github.com/aws/aws-sdk-go-v2/service/signin v1.0.11 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sso v1.30.17 // indirect
-	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.36.0 // indirect
-	github.com/aws/aws-sdk-go-v2/service/sts v1.42.1 // indirect
-	github.com/aws/smithy-go v1.25.1 // indirect
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v1.0.0 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
 	golang.org/x/sys v0.42.0 // indirect
+	modernc.org/libc v1.70.0 // indirect
+	modernc.org/mathutil v1.7.1 // indirect
+	modernc.org/memory v1.11.0 // indirect
+	modernc.org/sqlite v1.47.0 // indirect
 )
 
 require (

go.sum

@@ -1,45 +1,9 @@
 filippo.io/edwards25519 v1.1.1 h1:YpjwWWlNmGIDyXOn8zLzqiD+9TyIlPhGFG96P39uBpw=
 filippo.io/edwards25519 v1.1.1/go.mod h1:BxyFTGdWcka3PhytdK4V28tE5sGfRvvvRV7EaN4VDT4=
-github.com/aws/aws-sdk-go-v2 v1.41.7 h1:DWpAJt66FmnnaRIOT/8ASTucrvuDPZASqhhLey6tLY8=
-github.com/aws/aws-sdk-go-v2 v1.41.7/go.mod h1:4LAfZOPHNVNQEckOACQx60Y8pSRjIkNZQz1w92xpMJc=
-github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.10 h1:gx1AwW1Iyk9Z9dD9F4akX5gnN3QZwUB20GGKH/I+Rho=
-github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.10/go.mod h1:qqY157uZoqm5OXq/amuaBJyC9hgBCBQnsaWnPe905GY=
-github.com/aws/aws-sdk-go-v2/config v1.32.18 h1:Hcia46bxhGgF3BaSnG8nSNCWmqTK6bj9xN9/FJ3WK6Q=
-github.com/aws/aws-sdk-go-v2/config v1.32.18/go.mod h1:zEjCAYmxqDadH1WX8CdBvmLKhUEUVFgKRQG38zjDmrY=
-github.com/aws/aws-sdk-go-v2/credentials v1.19.17 h1:gP2nkGsS+KMvF/jfFz2Vv2qiiOqWKyPACSzPsqHgoW8=
-github.com/aws/aws-sdk-go-v2/credentials v1.19.17/go.mod h1:Bsew3S/moG5iT77giPj1q8wb/s0RE5/QfH+ASjYtuQc=
-github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.23 h1:UuSfcORqNSz/ey3VPRS8TcVH2Ikf0/sC+Hdj400QI6U=
-github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.18.23/go.mod h1:+G/OSGiOFnSOkYloKj/9M35s74LgVAdJBSD5lsFfqKg=
-github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.19 h1:VH0xfFwHfPYhu+EcxyCcw3VTZskpbA+/s0pTXwhSsL8=
-github.com/aws/aws-sdk-go-v2/feature/s3/manager v1.22.19/go.mod h1:S/XkAXcnCpzwsjC9EU0BakuvreXfSTUADHb7rC7jvaQ=
-github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.23 h1:GpT/TrnBYuE5gan2cZbTtvP+JlHsutdmlV2YfEyNde0=
-github.com/aws/aws-sdk-go-v2/internal/configsources v1.4.23/go.mod h1:xYWD6BS9ywC5bS3sz9Xh04whO/hzK2plt2Zkyrp4JuA=
-github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.23 h1:bpd8vxhlQi2r1hiueOw02f/duEPTMK59Q4QMAoTTtTo=
-github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.7.23/go.mod h1:15DfR2nw+CRHIk0tqNyifu3G1YdAOy68RftkhMDDwYk=
-github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.24 h1:OQqn11BtaYv1WLUowvcA30MpzIu8Ti4pcLPIIyoKZrA=
-github.com/aws/aws-sdk-go-v2/internal/v4a v1.4.24/go.mod h1:X5ZJyfwVrWA96GzPmUCWFQaEARPR7gCrpq2E92PJwAE=
-github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.9 h1:FLudkZLt5ci0ozzgkVo8BJGwvqNaZbTWb3UcucAateA=
-github.com/aws/aws-sdk-go-v2/service/internal/accept-encoding v1.13.9/go.mod h1:w7wZ/s9qK7c8g4al+UyoF1Sp/Z45UwMGcqIzLWVQHWk=
-github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.15 h1:ieLCO1JxUWuxTZ1cRd0GAaeX7O6cIxnwk7tc1LsQhC4=
-github.com/aws/aws-sdk-go-v2/service/internal/checksum v1.9.15/go.mod h1:e3IzZvQ3kAWNykvE0Tr0RDZCMFInMvhku3qNpcIQXhM=
-github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.23 h1:pbrxO/kuIwgEsOPLkaHu0O+m4fNgLU8B3vxQ+72jTPw=
-github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.13.23/go.mod h1:/CMNUqoj46HpS3MNRDEDIwcgEnrtZlKRaHNaHxIFpNA=
-github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.23 h1:03xatSQO4+AM1lTAbnRg5OK528EUg744nW7F73U8DKw=
-github.com/aws/aws-sdk-go-v2/service/internal/s3shared v1.19.23/go.mod h1:M8l3mwgx5ToK7wot2sBBce/ojzgnPzZXUV445gTSyE8=
-github.com/aws/aws-sdk-go-v2/service/s3 v1.101.0 h1:etqBTKY581iwLL/H/S2sVgk3C9lAsTJFeXWFDsDcWOU=
-github.com/aws/aws-sdk-go-v2/service/s3 v1.101.0/go.mod h1:L2dcoOgS2VSgbPLvpak2NyUPsO1TBN7M45Z4H7DlRc4=
-github.com/aws/aws-sdk-go-v2/service/signin v1.0.11 h1:TdJ+HdzOBhU8+iVAOGUTU63VXopcumCOF1paFulHWZc=
-github.com/aws/aws-sdk-go-v2/service/signin v1.0.11/go.mod h1:R82ZRExE/nheo0N+T8zHPcLRTcH8MGsnR3BiVGX0TwI=
-github.com/aws/aws-sdk-go-v2/service/sso v1.30.17 h1:7byT8HUWrgoRp6sXjxtZwgOKfhss5fW6SkLBtqzgRoE=
-github.com/aws/aws-sdk-go-v2/service/sso v1.30.17/go.mod h1:xNWknVi4Ezm1vg1QsB/5EWpAJURq22uqd38U8qKvOJc=
-github.com/aws/aws-sdk-go-v2/service/ssooidc v1.36.0 h1:nDARhv/oF55bcxF7rCI/4PDxOKnVXVWwDuDwCs2I2SQ=
-github.com/aws/aws-sdk-go-v2/service/ssooidc v1.36.0/go.mod h1:4vIRDq+CJB2xFAXZ+YgGUTiEft7oAQlhIs71xcSeuVg=
-github.com/aws/aws-sdk-go-v2/service/sts v1.42.1 h1:F/M5Y9I3nwr2IEpshZgh1GeHpOItExNM9L1euNuh/fk=
-github.com/aws/aws-sdk-go-v2/service/sts v1.42.1/go.mod h1:mTNxImtovCOEEuD65mKW7DCsL+2gjEH+RPEAexAzAio=
-github.com/aws/smithy-go v1.25.1 h1:J8ERsGSU7d+aCmdQur5Txg6bVoYelvQJgtZehD12GkI=
-github.com/aws/smithy-go v1.25.1/go.mod h1:YE2RhdIuDbA5E5bTdciG9KrW3+TiEONeUWCqxX9i1Fc=
 github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
 github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/go-chi/chi/v5 v5.2.4 h1:WtFKPHwlywe8Srng8j2BhOD9312j9cGUxG1SP4V2cR4=
 github.com/go-chi/chi/v5 v5.2.4/go.mod h1:X7Gx4mteadT3eDOMTsXzmI4/rwUpOwBHLpAfupzFJP0=
 github.com/go-chi/httprate v0.14.1 h1:EKZHYEZ58Cg6hWcYzoZILsv7ppb46Wt4uQ738IRtpZs=
@@ -47,17 +11,34 @@ github.com/go-chi/httprate v0.14.1/go.mod h1:TUepLXaz/pCjmCtf/obgOQJ2Sz6rC8fSf5c
 github.com/go-sql-driver/mysql v1.6.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/go-sql-driver/mysql v1.8.1 h1:LedoTUt/eveggdHS9qUFC1EFSa8bU2+1pZjSRpvNJ1Y=
 github.com/go-sql-driver/mysql v1.8.1/go.mod h1:wEBSXgmK//2ZFJyE+qWnIsVGmvmEKlqwuVSjsCm7DZg=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/jmoiron/sqlx v1.3.5 h1:vFFPA71p1o5gAeqtEAwLU4dnX2napprKtHr7PYIcN3g=
 github.com/jmoiron/sqlx v1.3.5/go.mod h1:nRVWtLre0KfCLJvgxzCsLVMogSvQ1zNJtpYr2Ccp0mQ=
 github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
 github.com/lib/pq v1.2.0 h1:LXpIM/LZ5xGFhOpXAQUIMM1HdyqzVYM13zNdjCEEcA0=
 github.com/lib/pq v1.2.0/go.mod h1:5WUZQaWbwv1U+lTReE5YruASi9Al49XbQIvNi/34Woo=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
 github.com/mattn/go-sqlite3 v1.14.6 h1:dNPt6NO46WmLVt2DLNpwczCmdV5boIZ6g/tlDrlRUbg=
 github.com/mattn/go-sqlite3 v1.14.6/go.mod h1:NyWgC/yNuGj7Q9rpYnZvas74GogHl5/Z4A/KQRfk6bU=
+github.com/ncruces/go-strftime v1.0.0 h1:HMFp8mLCTPp341M/ZnA4qaf7ZlsbTc+miZjCLOFAw7w=
+github.com/ncruces/go-strftime v1.0.0/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
 golang.org/x/crypto v0.49.0 h1:+Ng2ULVvLHnJ/ZFEq4KdcDd/cfjrrjjNSXNzxg0Y4U4=
 golang.org/x/crypto v0.49.0/go.mod h1:ErX4dUh2UM+CFYiXZRTcMpEcN8b/1gxEuv3nODoYtCA=
 golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M=
 golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
 golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=
+modernc.org/libc v1.70.0 h1:U58NawXqXbgpZ/dcdS9kMshu08aiA6b7gusEusqzNkw=
+modernc.org/libc v1.70.0/go.mod h1:OVmxFGP1CI/Z4L3E0Q3Mf1PDE0BucwMkcXjjLntvHJo=
+modernc.org/mathutil v1.7.1 h1:GCZVGXdaN8gTqB1Mf/usp1Y/hSqgI2vAGGP4jZMCxOU=
+modernc.org/mathutil v1.7.1/go.mod h1:4p5IwJITfppl0G4sUEDtCr4DthTaT47/N3aT6MhfgJg=
+modernc.org/memory v1.11.0 h1:o4QC8aMQzmcwCK3t3Ux/ZHmwFPzE6hf2Y5LbkRs+hbI=
+modernc.org/memory v1.11.0/go.mod h1:/JP4VbVC+K5sU2wZi9bHoq2MAkCnrt2r98UGeSK7Mjw=
+modernc.org/sqlite v1.47.0 h1:R1XyaNpoW4Et9yly+I2EeX7pBza/w+pmYee/0HJDyKk=
+modernc.org/sqlite v1.47.0/go.mod h1:hWjRO6Tj/5Ik8ieqxQybiEOUXy0NJFNp2tpvVpKlvig=

internal/config/config.go

@@ -2,7 +2,6 @@ package config
 
 import (
 	"os"
-	"regexp"
 	"strconv"
 	"strings"
 	"sync"
@@ -20,28 +19,17 @@ type RateLimitConfig struct {
 	AuthBanDur     time.Duration
 }
 
-type R2Config struct {
-	AccountID       string
-	AccessKeyID     string
-	SecretAccessKey string
-	BucketName      string
-	Region          string
-	Endpoint        string
-}
-
 type Config struct {
-	Port                   string
-	DSN                    string
-	Database               string
-	APIKey                 string
-	AdminKey               string
-	MaxOpenConns           int
-	MaxIdleConns           int
-	ConnMaxLifetime        int
-	UpdatesEnabled         bool
-	UseS3CompatibleStorage bool
-	RateLimit              RateLimitConfig
-	R2                     R2Config
+	Port            string
+	Driver          string
+	DSN             string
+	Database        string
+	APIKey          string
+	AdminKey        string
+	MaxOpenConns    int
+	MaxIdleConns    int
+	ConnMaxLifetime int
+	RateLimit       RateLimitConfig
 }
 
 var (
@@ -93,18 +81,19 @@ func load() *Config {
 		connMaxLifetime = 5
 	}
 
-	dbName := os.Getenv("DATABASE_NAME")
-	if dbName == "" {
-		panic("DATABASE_NAME environment variable is required")
+	driver := os.Getenv("DB_DRIVER")
+	if driver == "" {
+		driver = "mysql"
 	}
-	dbNameRegex := regexp.MustCompile("^[a-zA-Z0-9_]+$")
-	// Test the regex against the dbName, otherwise panic to prevent potential SQL injection
-	validDbName, err := regexp.Match(dbNameRegex.String(), []byte(dbName))
-	if err != nil {
-		panic("failed to validate database name: " + err.Error())
-	}
-	if !validDbName {
-		panic("invalid database name: must match regex " + dbNameRegex.String())
+
+	var dbName string
+	if driver == "sqlite" {
+		dbName = "main"
+	} else {
+		dbName = os.Getenv("DATABASE_NAME")
+		if dbName == "" {
+			panic("DATABASE_NAME environment variable is required")
+		}
 	}
 
 	if os.Getenv("DB_DSN") == "" {
@@ -112,24 +101,15 @@ func load() *Config {
 	}
 
 	return &Config{
-		Port:                   port,
-		DSN:                    os.Getenv("DB_DSN"),
-		Database:               dbName,
-		APIKey:                 apiKey,
-		AdminKey:               adminKey,
-		MaxOpenConns:           maxOpenConns,
-		MaxIdleConns:           maxIdleConns,
-		ConnMaxLifetime:        connMaxLifetime,
-		UpdatesEnabled:         strings.ToLower(strings.TrimSpace(os.Getenv("UPDATES_ENABLED"))) == "true",
-		UseS3CompatibleStorage: strings.ToLower(strings.TrimSpace(os.Getenv("USE_S3_COMPATIBLE_STORAGE"))) == "true",
-		R2: R2Config{
-			AccountID:       os.Getenv("CF_ACCOUNT_ID"),
-			AccessKeyID:     os.Getenv("CF_R2_ACCESS_KEY_ID"),
-			SecretAccessKey: os.Getenv("CF_R2_SECRET_ACCESS_KEY"),
-			BucketName:      os.Getenv("CF_R2_BUCKET_NAME"),
-			Region:          envString("CF_R2_REGION", "auto"),
-			Endpoint:        os.Getenv("CF_R2_ENDPOINT"),
-		},
+		Port:            port,
+		Driver:          driver,
+		DSN:             os.Getenv("DB_DSN"),
+		Database:        dbName,
+		APIKey:          apiKey,
+		AdminKey:        adminKey,
+		MaxOpenConns:    maxOpenConns,
+		MaxIdleConns:    maxIdleConns,
+		ConnMaxLifetime: connMaxLifetime,
 		RateLimit: RateLimitConfig{
 			UnauthMaxReqs:  envInt("RL_UNAUTH_MAX_REQS", 10),
 			UnauthWindow:   envDuration("RL_UNAUTH_WINDOW", 5*time.Minute),
@@ -143,13 +123,6 @@ func load() *Config {
 	}
 }
 
-func envString(key, fallback string) string {
-	if s := os.Getenv(key); s != "" {
-		return s
-	}
-	return fallback
-}
-
 func envInt(key string, fallback int) int {
 	if s := os.Getenv(key); s != "" {
 		if n, err := strconv.Atoi(s); err == nil {

internal/database/database.go

@@ -1,23 +1,41 @@
 package database
 
 import (
+	"fmt"
 	"time"
 
 	_ "github.com/go-sql-driver/mysql"
 	"github.com/jmoiron/sqlx"
+	_ "modernc.org/sqlite"
 
 	"emly-api-go/internal/config"
 )
 
 func Connect(cfg *config.Config) (*sqlx.DB, error) {
-	db, err := sqlx.Connect("mysql", cfg.DSN)
-	if err != nil {
-		return nil, err
-	}
+	var db *sqlx.DB
+	var err error
 
-	db.SetMaxOpenConns(cfg.MaxOpenConns)
-	db.SetMaxIdleConns(cfg.MaxIdleConns)
-	db.SetConnMaxLifetime(time.Duration(cfg.ConnMaxLifetime) * time.Minute)
+	switch cfg.Driver {
+	case "sqlite":
+		db, err = sqlx.Connect("sqlite", cfg.DSN)
+		if err != nil {
+			return nil, err
+		}
+		// Enable foreign key support (disabled by default in SQLite)
+		if _, err = db.Exec("PRAGMA foreign_keys = ON"); err != nil {
+			return nil, fmt.Errorf("sqlite: enable foreign_keys: %w", err)
+		}
+	case "mysql":
+		db, err = sqlx.Connect("mysql", cfg.DSN)
+		if err != nil {
+			return nil, err
+		}
+		db.SetMaxOpenConns(cfg.MaxOpenConns)
+		db.SetMaxIdleConns(cfg.MaxIdleConns)
+		db.SetConnMaxLifetime(time.Duration(cfg.ConnMaxLifetime) * time.Minute)
+	default:
+		return nil, fmt.Errorf("unsupported DB_DRIVER %q: must be mysql or sqlite", cfg.Driver)
+	}
 
 	return db, nil
 }

internal/database/schema/migrator.go

@@ -10,7 +10,7 @@ import (
 	"github.com/jmoiron/sqlx"
 )
 
-//go:embed init.sql migrations/*.json migrations/*.sql
+//go:embed mysql sqlite
 var migrationsFS embed.FS
 
 type taskFile struct {
@@ -31,62 +31,43 @@ type condition struct {
 	Index  string `json:"index,omitempty"`
 }
 
-// Migrate reads migrations/tasks.json and executes every task whose
-// conditions are ALL satisfied (i.e. logical AND).
-func Migrate(db *sqlx.DB, dbName string) error {
-	// If the database has no tables at all, bootstrap with init.sql.
-	empty, err := schemaIsEmpty(db, dbName)
+// Migrate reads the driver-specific migrations and applies them.
+func Migrate(db *sqlx.DB, dbName string, driver string) error {
+	empty, err := schemaIsEmpty(db, dbName, driver)
 	if err != nil {
 		return fmt.Errorf("schema: check empty: %w", err)
 	}
 	if empty {
 		log.Println("[migrate] empty schema detected – running init.sql")
-		initSQL, err := migrationsFS.ReadFile("init.sql")
-		if err != nil {
-			return fmt.Errorf("schema: read init.sql: %w", err)
+		if err := runInitSQL(db, driver); err != nil {
+			return err
 		}
-		for _, stmt := range splitStatements(string(initSQL)) {
-			if _, err := db.Exec(stmt); err != nil {
-				return fmt.Errorf("schema: exec init.sql: %w\nSQL: %s", err, stmt)
-			}
-		}
-		log.Println("[migrate] init.sql applied – base schema created")
 	} else {
 		log.Println("[migrate] checking if tables exist")
-		// Check if the tables are there or not
-		var tableNames []string
+		tableNames := []string{"bug_reports", "bug_report_files", "rate_limit_hwid", "user", "session"}
 		var foundTables []string
-		tableNames = append(tableNames, "bug_reports", "bug_report_files", "rate_limit_hwid", "user", "session")
 		for _, tableName := range tableNames {
-			found, err := tableExists(db, dbName, tableName)
+			found, err := tableExists(db, dbName, tableName, driver)
 			if err != nil {
 				return fmt.Errorf("schema: check table %s: %w", tableName, err)
 			}
 			if !found {
-				log.Printf("[migrate] warning: expected table %s not found – schema may be in an inconsistent state", tableName)
+				log.Printf("[migrate] warning: expected table %s not found", tableName)
 				continue
 			}
 			foundTables = append(foundTables, tableName)
 		}
 		if len(foundTables) != len(tableNames) {
-			log.Printf("[migrate] warning: expected %d tables, found %d", len(tableNames), len(foundTables))
-			log.Printf("[migrate] info: running init.sql")
-			initSQL, err := migrationsFS.ReadFile("init.sql")
-			if err != nil {
-				return fmt.Errorf("schema: read init.sql: %w", err)
+			log.Printf("[migrate] warning: expected %d tables, found %d – running init.sql", len(tableNames), len(foundTables))
+			if err := runInitSQL(db, driver); err != nil {
+				return err
 			}
-			for _, stmt := range splitStatements(string(initSQL)) {
-				if _, err := db.Exec(stmt); err != nil {
-					return fmt.Errorf("schema: exec init.sql: %w\nSQL: %s", err, stmt)
-				}
-			}
-			log.Println("[migrate] init.sql applied – base schema created")
 		} else {
 			log.Println("[migrate] all expected tables found – skipping init.sql")
 		}
 	}
 
-	raw, err := migrationsFS.ReadFile("migrations/tasks.json")
+	raw, err := migrationsFS.ReadFile(driver + "/migrations/tasks.json")
 	if err != nil {
 		return fmt.Errorf("schema: read tasks.json: %w", err)
 	}
@@ -97,7 +78,7 @@ func Migrate(db *sqlx.DB, dbName string) error {
 	}
 
 	for _, t := range tf.Tasks {
-		needed, err := shouldRun(db, dbName, t.Conditions)
+		needed, err := shouldRun(db, dbName, t.Conditions, driver)
 		if err != nil {
 			return fmt.Errorf("schema: evaluate conditions for %s: %w", t.ID, err)
 		}
@@ -106,7 +87,7 @@ func Migrate(db *sqlx.DB, dbName string) error {
 			continue
 		}
 
-		sqlBytes, err := migrationsFS.ReadFile("migrations/" + t.SQLFile)
+		sqlBytes, err := migrationsFS.ReadFile(driver + "/migrations/" + t.SQLFile)
 		if err != nil {
 			return fmt.Errorf("schema: read %s: %w", t.SQLFile, err)
 		}
@@ -122,11 +103,25 @@ func Migrate(db *sqlx.DB, dbName string) error {
 	return nil
 }
 
+func runInitSQL(db *sqlx.DB, driver string) error {
+	initSQL, err := migrationsFS.ReadFile(driver + "/init.sql")
+	if err != nil {
+		return fmt.Errorf("schema: read init.sql: %w", err)
+	}
+	for _, stmt := range splitStatements(string(initSQL)) {
+		if _, err := db.Exec(stmt); err != nil {
+			return fmt.Errorf("schema: exec init.sql: %w\nSQL: %s", err, stmt)
+		}
+	}
+	log.Println("[migrate] init.sql applied – base schema created")
+	return nil
+}
+
 // ---------- Condition evaluator ----------
 
-func shouldRun(db *sqlx.DB, dbName string, conds []condition) (bool, error) {
+func shouldRun(db *sqlx.DB, dbName string, conds []condition, driver string) (bool, error) {
 	for _, c := range conds {
-		met, err := evaluate(db, dbName, c)
+		met, err := evaluate(db, dbName, c, driver)
 		if err != nil {
 			return false, err
 		}
@@ -137,81 +132,186 @@ func shouldRun(db *sqlx.DB, dbName string, conds []condition) (bool, error) {
 	return false, nil
 }
 
-func evaluate(db *sqlx.DB, dbName string, c condition) (bool, error) {
+func evaluate(db *sqlx.DB, dbName string, c condition, driver string) (bool, error) {
 	switch c.Type {
 	case "column_not_exists":
-		exists, err := columnExists(db, dbName, c.Table, c.Column)
+		exists, err := columnExists(db, dbName, c.Table, c.Column, driver)
 		return !exists, err
 
 	case "column_exists":
-		return columnExists(db, dbName, c.Table, c.Column)
+		return columnExists(db, dbName, c.Table, c.Column, driver)
 
 	case "index_not_exists":
-		exists, err := indexExists(db, dbName, c.Table, c.Index)
+		exists, err := indexExists(db, dbName, c.Table, c.Index, driver)
 		return !exists, err
 
 	case "index_exists":
-		return indexExists(db, dbName, c.Table, c.Index)
+		return indexExists(db, dbName, c.Table, c.Index, driver)
 
 	case "table_not_exists":
-		exists, err := tableExists(db, dbName, c.Table)
+		exists, err := tableExists(db, dbName, c.Table, driver)
 		return !exists, err
 
 	case "table_exists":
-		return tableExists(db, dbName, c.Table)
+		return tableExists(db, dbName, c.Table, driver)
 
 	default:
 		return false, fmt.Errorf("unknown condition type: %s", c.Type)
 	}
 }
 
-func columnExists(db *sqlx.DB, dbName, table, column string) (bool, error) {
+// ---------- MySQL condition checks ----------
+
+func columnExistsMySQL(db *sqlx.DB, dbName, table, column string) (bool, error) {
 	var count int
 	err := db.Get(&count,
 		`SELECT COUNT(*) FROM information_schema.COLUMNS
-		 WHERE TABLE_SCHEMA = ?
-		   AND TABLE_NAME   = ?
-		   AND COLUMN_NAME  = ?`, dbName, table, column)
+		 WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? AND COLUMN_NAME = ?`,
+		dbName, table, column)
 	return count > 0, err
 }
 
-func indexExists(db *sqlx.DB, dbName, table, index string) (bool, error) {
+func indexExistsMySQL(db *sqlx.DB, dbName, table, index string) (bool, error) {
 	var count int
 	err := db.Get(&count,
 		`SELECT COUNT(*) FROM information_schema.STATISTICS
-		 WHERE TABLE_SCHEMA = ?
-		   AND TABLE_NAME   = ?
-		   AND INDEX_NAME   = ?`, dbName, table, index)
+		 WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ? AND INDEX_NAME = ?`,
+		dbName, table, index)
 	return count > 0, err
 }
 
-func tableExists(db *sqlx.DB, dbName, table string) (bool, error) {
+func tableExistsMySQL(db *sqlx.DB, dbName, table string) (bool, error) {
 	var count int
 	err := db.Get(&count,
 		`SELECT COUNT(*) FROM information_schema.TABLES
-		 WHERE TABLE_SCHEMA = ?
-		   AND TABLE_NAME   = ?`, dbName, table)
+		 WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?`,
+		dbName, table)
 	return count > 0, err
 }
 
-func schemaIsEmpty(db *sqlx.DB, dbName string) (bool, error) {
+func schemaIsEmptyMySQL(db *sqlx.DB, dbName string) (bool, error) {
 	var count int
 	err := db.Get(&count,
-		`SELECT COUNT(*) FROM information_schema.TABLES
-		 WHERE TABLE_SCHEMA = ?`, dbName)
+		`SELECT COUNT(*) FROM information_schema.TABLES WHERE TABLE_SCHEMA = ?`, dbName)
 	return count == 0, err
 }
 
-// splitStatements splits a SQL blob on ";" respecting only top-level
-// semicolons (good enough for simple ALTER / CREATE statements).
+// ---------- SQLite condition checks ----------
+
+func columnExistsSQLite(db *sqlx.DB, table, column string) (bool, error) {
+	var count int
+	// pragma_table_info is a table-valued function available since SQLite 3.16.0
+	err := db.Get(&count,
+		fmt.Sprintf("SELECT COUNT(*) FROM pragma_table_info('%s') WHERE name = ?", table),
+		column)
+	return count > 0, err
+}
+
+func indexExistsSQLite(db *sqlx.DB, table, index string) (bool, error) {
+	var count int
+	err := db.Get(&count,
+		`SELECT COUNT(*) FROM sqlite_master WHERE type='index' AND tbl_name=? AND name=?`,
+		table, index)
+	return count > 0, err
+}
+
+func tableExistsSQLite(db *sqlx.DB, table string) (bool, error) {
+	var count int
+	err := db.Get(&count,
+		`SELECT COUNT(*) FROM sqlite_master WHERE type='table' AND name=?`, table)
+	return count > 0, err
+}
+
+func schemaIsEmptySQLite(db *sqlx.DB) (bool, error) {
+	var count int
+	err := db.Get(&count, `SELECT COUNT(*) FROM sqlite_master WHERE type='table'`)
+	return count == 0, err
+}
+
+// ---------- Driver-dispatched wrappers ----------
+
+func columnExists(db *sqlx.DB, dbName, table, column, driver string) (bool, error) {
+	if driver == "sqlite" {
+		return columnExistsSQLite(db, table, column)
+	}
+	return columnExistsMySQL(db, dbName, table, column)
+}
+
+func indexExists(db *sqlx.DB, dbName, table, index, driver string) (bool, error) {
+	if driver == "sqlite" {
+		return indexExistsSQLite(db, table, index)
+	}
+	return indexExistsMySQL(db, dbName, table, index)
+}
+
+func tableExists(db *sqlx.DB, dbName, table, driver string) (bool, error) {
+	if driver == "sqlite" {
+		return tableExistsSQLite(db, table)
+	}
+	return tableExistsMySQL(db, dbName, table)
+}
+
+func schemaIsEmpty(db *sqlx.DB, dbName, driver string) (bool, error) {
+	if driver == "sqlite" {
+		return schemaIsEmptySQLite(db)
+	}
+	return schemaIsEmptyMySQL(db, dbName)
+}
+
+// splitStatements splits a SQL blob on top-level ";" only, respecting
+// BEGIN...END blocks (e.g. triggers) so their inner semicolons are not split.
 func splitStatements(sql string) []string {
-	raw := strings.Split(sql, ";")
-	out := make([]string, 0, len(raw))
-	for _, s := range raw {
-		s = strings.TrimSpace(s)
-		if s != "" {
-			out = append(out, s)
+	var out []string
+	var buf strings.Builder
+	depth := 0
+	n := len(sql)
+
+	for i := 0; i < n; {
+		c := sql[i]
+
+		// Collect whole identifier tokens to detect BEGIN / END keywords.
+		if isIdentStart(c) {
+			j := i
+			for j < n && isIdentChar(sql[j]) {
+				j++
+			}
+			word := strings.ToUpper(sql[i:j])
+			switch word {
+			case "BEGIN":
+				depth++
+			case "END":
+				if depth > 0 {
+					depth--
+				}
+			}
+			buf.WriteString(sql[i:j])
+			i = j
+			continue
 		}
+
+		if c == ';' && depth == 0 {
+			if stmt := strings.TrimSpace(buf.String()); stmt != "" {
+				out = append(out, stmt)
+			}
+			buf.Reset()
+			i++
+			continue
+		}
+
+		buf.WriteByte(c)
+		i++
+	}
+
+	if stmt := strings.TrimSpace(buf.String()); stmt != "" {
+		out = append(out, stmt)
 	}
 	return out
 }
+
+func isIdentStart(c byte) bool {
+	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_'
+}
+
+func isIdentChar(c byte) bool {
+	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_'
+}

internal/database/schema/mysql/migrations/tasks.json

@@ -19,13 +19,5 @@
         { "type": "column_not_exists", "table": "user", "column": "enabled" }
       ]
     }
-    ,{
-      "id": "3_updates",
-      "sql_file": "3_updates.sql",
-      "description": "Create update_releases table for API-managed software updates.",
-      "conditions": [
-        { "type": "table_not_exists", "table": "update_releases" }
-      ]
-    }
   ]
 }

internal/database/schema/sqlite/init.sql

@@ -0,0 +1,65 @@
+CREATE TABLE IF NOT EXISTS bug_reports (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    name TEXT NOT NULL,
+    email TEXT NOT NULL,
+    description TEXT NOT NULL,
+    hwid TEXT NOT NULL DEFAULT '',
+    hostname TEXT NOT NULL DEFAULT '',
+    os_user TEXT NOT NULL DEFAULT '',
+    submitter_ip TEXT NOT NULL DEFAULT '',
+    system_info TEXT NULL,
+    status TEXT NOT NULL DEFAULT 'new' CHECK(status IN ('new','in_review','resolved','closed')),
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX IF NOT EXISTS idx_status ON bug_reports(status);
+CREATE INDEX IF NOT EXISTS idx_hwid ON bug_reports(hwid);
+CREATE INDEX IF NOT EXISTS idx_hostname ON bug_reports(hostname);
+CREATE INDEX IF NOT EXISTS idx_os_user ON bug_reports(os_user);
+CREATE INDEX IF NOT EXISTS idx_created_at ON bug_reports(created_at);
+
+CREATE TRIGGER IF NOT EXISTS trg_bug_reports_updated_at
+    AFTER UPDATE ON bug_reports
+    FOR EACH ROW
+    WHEN NEW.updated_at = OLD.updated_at
+BEGIN
+    UPDATE bug_reports SET updated_at = CURRENT_TIMESTAMP WHERE id = NEW.id;
+END;
+
+CREATE TABLE IF NOT EXISTS bug_report_files (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    report_id INTEGER NOT NULL,
+    file_role TEXT NOT NULL CHECK(file_role IN ('screenshot','mail_file','localstorage','config','system_info')),
+    filename TEXT NOT NULL,
+    mime_type TEXT NOT NULL DEFAULT 'application/octet-stream',
+    file_size INTEGER NOT NULL DEFAULT 0,
+    data BLOB NOT NULL,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    FOREIGN KEY (report_id) REFERENCES bug_reports(id) ON DELETE CASCADE
+);
+
+CREATE INDEX IF NOT EXISTS idx_report_id ON bug_report_files(report_id);
+
+CREATE TABLE IF NOT EXISTS rate_limit_hwid (
+    hwid TEXT PRIMARY KEY,
+    window_start DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    count INTEGER NOT NULL DEFAULT 0
+);
+
+CREATE TABLE IF NOT EXISTS user (
+    id TEXT PRIMARY KEY,
+    username TEXT NOT NULL UNIQUE,
+    password_hash TEXT NOT NULL,
+    role TEXT NOT NULL DEFAULT 'user' CHECK(role IN ('admin','user')),
+    enabled INTEGER NOT NULL DEFAULT 1,
+    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    displayname TEXT NOT NULL DEFAULT ''
+);
+
+CREATE TABLE IF NOT EXISTS session (
+    id TEXT PRIMARY KEY,
+    user_id TEXT NOT NULL,
+    expires_at DATETIME NOT NULL,
+    FOREIGN KEY (user_id) REFERENCES user(id) ON DELETE CASCADE
+);

internal/database/schema/sqlite/migrations/tasks.json

@@ -0,0 +1,3 @@
+{
+  "tasks": []
+}

internal/handlers/admin_auth.route.go

@@ -198,8 +198,8 @@ func ValidateSession(db *sqlx.DB) http.HandlerFunc {
 			sessionID,
 		)
 		if err != nil {
-			log.Printf("[AUTH] Database error during session validation: %v", err)
-			jsonError(w, http.StatusInternalServerError, "internal server error")
+			jsonError(w, http.StatusUnauthorized, "invalid session")
+			log.Fatalf("Database error during session validation: %v", err)
 			return
 		}
 

internal/handlers/bug_report.route.go

@@ -3,7 +3,6 @@ package handlers
 import (
 	"archive/zip"
 	"bytes"
-	"context"
 	"database/sql"
 	"embed"
 	"encoding/json"
@@ -22,8 +21,6 @@ import (
 	"github.com/jmoiron/sqlx"
 
 	"emly-api-go/internal/models"
-	"emly-api-go/internal/storage"
-	"emly-api-go/internal/timing"
 )
 
 //go:embed templates/report.txt.tmpl
@@ -44,13 +41,12 @@ var fileRoles = []struct {
 	{"config", models.FileRoleConfig, "application/json"},
 }
 
-func CreateBugReport(db *sqlx.DB, dbName string, s3conn *storage.S3Connector) http.HandlerFunc {
+func CreateBugReport(db *sqlx.DB, dbName string) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		if err := r.ParseMultipartForm(32 << 20); err != nil {
 			jsonError(w, http.StatusBadRequest, "invalid multipart form: "+err.Error())
 			return
 		}
-		timing.Mark(r.Context(), "parse_form")
 
 		name := r.FormValue("name")
 		email := r.FormValue("email")
@@ -88,7 +84,6 @@ func CreateBugReport(db *sqlx.DB, dbName string, s3conn *storage.S3Connector) ht
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
-		timing.Mark(r.Context(), "db_insert_report")
 
 		reportID, err := result.LastInsertId()
 		if err != nil {
@@ -125,7 +120,7 @@ func CreateBugReport(db *sqlx.DB, dbName string, s3conn *storage.S3Connector) ht
 
 			log.Printf("[BUGREPORT] File uploaded: role=%s size=%d bytes", fr.role, len(data))
 
-			fileResult, err := db.ExecContext(r.Context(),
+			_, err = db.ExecContext(r.Context(),
 				fmt.Sprintf("INSERT INTO %s.bug_report_files (report_id, file_role, filename, mime_type, file_size, data) VALUES (?, ?, ?, ?, ?, ?)", dbName),
 				reportID, fr.role, filename, mimeType, len(data), data,
 			)
@@ -133,25 +128,6 @@ func CreateBugReport(db *sqlx.DB, dbName string, s3conn *storage.S3Connector) ht
 				jsonError(w, http.StatusInternalServerError, err.Error())
 				return
 			}
-			timing.Mark(r.Context(), "db_insert_file_"+string(fr.role))
-
-			if s3conn != nil {
-				fileID, err := fileResult.LastInsertId()
-				if err != nil {
-					log.Printf("[S3] could not get file insert id for report %d role %s: %v", reportID, fr.role, err)
-				} else {
-					s3Key := fmt.Sprintf("emly-api-files/bug-reports/%d/files/%s", reportID, filename)
-					if _, err := s3conn.UploadFile(
-						context.Background(), s3Key,
-						bytes.NewReader(data), mimeType,
-						map[string]string{"filename": filename, "id": strconv.FormatInt(fileID, 10)},
-					); err != nil {
-						log.Printf("[S3] upload failed for key %s: %v", s3Key, err)
-					} else {
-						timing.Mark(r.Context(), "s3_upload_file_"+string(fr.role))
-					}
-				}
-			}
 		}
 
 		log.Printf("[BUGREPORT] Created successfully with id=%d", reportID)
@@ -201,7 +177,6 @@ func GetAllBugReports(db *sqlx.DB, dbName string) http.HandlerFunc {
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
-		timing.Mark(r.Context(), "db_count")
 
 		mainQuery := fmt.Sprintf(`
 	SELECT br.*, COUNT(bf.id) as file_count
@@ -218,7 +193,6 @@ func GetAllBugReports(db *sqlx.DB, dbName string) http.HandlerFunc {
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
-		timing.Mark(r.Context(), "db_select")
 
 		jsonOK(w, map[string]interface{}{
 			"data":        reports,
@@ -306,7 +280,7 @@ func GetReportFilesByReportID(db *sqlx.DB, dbName string) http.HandlerFunc {
 	}
 }
 
-func GetBugReportZipByID(db *sqlx.DB, dbName string) http.HandlerFunc {
+func GetBugReportZipById(db *sqlx.DB, dbName string) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		id := chi.URLParam(r, "id")
 		if id == "" {
@@ -324,14 +298,12 @@ func GetBugReportZipByID(db *sqlx.DB, dbName string) http.HandlerFunc {
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
-		timing.Mark(r.Context(), "db_fetch_report")
 
 		var files []models.BugReportFile
 		if err := db.SelectContext(r.Context(), &files, fmt.Sprintf("SELECT * FROM %s.bug_report_files WHERE report_id = ?", dbName), id); err != nil {
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
-		timing.Mark(r.Context(), "db_fetch_files")
 
 		var sysInfoStr string
 		if len(report.SystemInfo) > 0 && string(report.SystemInfo) != "null" {
@@ -381,7 +353,6 @@ func GetBugReportZipByID(db *sqlx.DB, dbName string) http.HandlerFunc {
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
-		timing.Mark(r.Context(), "zip_build")
 
 		w.Header().Set("Content-Type", "application/zip")
 		w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=\"report-%d.zip\"", report.ID))
@@ -393,7 +364,7 @@ func GetBugReportZipByID(db *sqlx.DB, dbName string) http.HandlerFunc {
 	}
 }
 
-func GetReportFileByFileID(db *sqlx.DB, dbName string, s3conn *storage.S3Connector) http.HandlerFunc {
+func GetReportFileByFileID(db *sqlx.DB, dbName string) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
 		reportId := chi.URLParam(r, "id")
 		if reportId == "" {
@@ -406,44 +377,6 @@ func GetReportFileByFileID(db *sqlx.DB, dbName string, s3conn *storage.S3Connect
 			return
 		}
 
-		var filename string
-		if err := db.GetContext(r.Context(), &filename, fmt.Sprintf("SELECT filename FROM %s.bug_report_files WHERE report_id = ? AND id = ?", dbName), reportId, fileId); err != nil {
-			jsonError(w, http.StatusInternalServerError, err.Error())
-			return
-		}
-		timing.Mark(r.Context(), "db_fetch_filename_by_id")
-
-		// Try S3 first.
-		if s3conn != nil {
-			s3Key := fmt.Sprintf("emly-api-files/bug-reports/%s/files/%s", reportId, filename)
-			rc, info, err := s3conn.GetFile(r.Context(), s3Key)
-			if err == nil {
-				defer rc.Close()
-				timing.Mark(r.Context(), "s3_hit")
-				log.Println("[S3] cache hit for key", s3Key)
-
-				mimeType := info.ContentType
-				if mimeType == "" {
-					mimeType = "application/octet-stream"
-				}
-				filename := info.Metadata["filename"]
-				if filename == "" {
-					filename = fileId
-				}
-				w.Header().Set("Content-Type", mimeType)
-				w.Header().Set("Content-Disposition", "attachment; filename=\""+filename+"\"")
-				_, _ = io.Copy(w, rc)
-				return
-			}
-			if storage.IsNotFound(err) {
-				log.Printf("[S3] file %s not found on s3", fileId)
-			}
-			if !storage.IsNotFound(err) {
-				log.Printf("[S3] unexpected error fetching key %s: %v", s3Key, err)
-			}
-		}
-
-		// Fallback: query DB.
 		var file models.BugReportFile
 		err := db.GetContext(r.Context(), &file, fmt.Sprintf("SELECT filename, mime_type, data FROM %s.bug_report_files WHERE report_id = ? AND id = ?", dbName), reportId, fileId)
 		if errors.Is(err, sql.ErrNoRows) {
@@ -454,25 +387,6 @@ func GetReportFileByFileID(db *sqlx.DB, dbName string, s3conn *storage.S3Connect
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
-		timing.Mark(r.Context(), "db_select")
-
-		// Lazy-upload to S3 so future requests are served from there.
-		if s3conn != nil {
-			s3Key := fmt.Sprintf("emly-api-files/bug-reports/%s/files/%s", reportId, fileId)
-			dataCopy := make([]byte, len(file.Data))
-			copy(dataCopy, file.Data)
-			mime := file.MimeType
-			fname := file.Filename
-			go func() {
-				if _, err := s3conn.UploadFile(
-					context.Background(), s3Key,
-					bytes.NewReader(dataCopy), mime,
-					map[string]string{"filename": fname},
-				); err != nil {
-					log.Printf("[S3] lazy upload failed for key %s: %v", s3Key, err)
-				}
-			}()
-		}
 
 		mimeType := file.MimeType
 		if mimeType == "" {
@@ -480,7 +394,10 @@ func GetReportFileByFileID(db *sqlx.DB, dbName string, s3conn *storage.S3Connect
 		}
 		w.Header().Set("Content-Type", mimeType)
 		w.Header().Set("Content-Disposition", "attachment; filename=\""+file.Filename+"\"")
-		_, _ = w.Write(file.Data)
+		_, err = w.Write(file.Data)
+		if err != nil {
+			return
+		}
 	}
 }
 
@@ -544,28 +461,21 @@ func DeleteBugReportByID(db *sqlx.DB, dbName string) http.HandlerFunc {
 			return
 		}
 
-		log.Printf("[BUGREPORT] Delete requested: report_id=%s", reportId)
-
 		result, err := db.ExecContext(r.Context(), fmt.Sprintf("DELETE FROM %s.bug_reports WHERE id = ?", dbName), reportId)
 		if err != nil {
-			log.Printf("[BUGREPORT] Delete failed: report_id=%s err=%v", reportId, err)
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
 		rowsAffected, err := result.RowsAffected()
 		if err != nil {
-			log.Printf("[BUGREPORT] Delete rows check failed: report_id=%s err=%v", reportId, err)
 			jsonError(w, http.StatusInternalServerError, err.Error())
 			return
 		}
 		if rowsAffected == 0 {
-			log.Printf("[BUGREPORT] Delete skipped: report_id=%s not found", reportId)
 			jsonError(w, http.StatusNotFound, "bug report not found")
 			return
 		}
 
-		log.Printf("[BUGREPORT] Deleted successfully: report_id=%s rows=%d", reportId, rowsAffected)
-
 		jsonOK(w, map[string]string{"message": "bug report deleted successfully"})
 	}
 }

internal/middleware/timing.go

@@ -1,62 +0,0 @@
-package middleware
-
-import (
-	"fmt"
-	"log"
-	"net/http"
-	"strings"
-	"time"
-
-	"emly-api-go/internal/timing"
-)
-
-// Timing is a middleware that measures per-request step durations.
-//
-// It injects a *timing.Timer into the request context so that handlers can
-// record named checkpoints with timing.Mark(r.Context(), "step_name").
-// After the handler returns, it logs a single line of the form:
-//
-//	[TIMING] METHOD /path  step1=1.2ms  step2=18ms  total=20ms
-//
-// Each step duration is measured from the previous checkpoint (or request
-// start for the first one), so the values add up to the total.
-func Timing(next http.Handler) http.Handler {
-	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		ctx, t := timing.NewContext(r.Context())
-		next.ServeHTTP(w, r.WithContext(ctx))
-
-		total := time.Since(t.Start)
-		checkpoints := t.Checkpoints()
-
-		if len(checkpoints) == 0 {
-			// No checkpoints: just log the total so every request is visible.
-			log.Printf("[TIMING] %s %s  total=%s", r.Method, r.URL.Path, round(total))
-			return
-		}
-
-		parts := make([]string, 0, len(checkpoints)+1)
-		prev := t.Start
-		for _, cp := range checkpoints {
-			parts = append(parts, fmt.Sprintf("%s=%s", cp.Name, round(cp.At.Sub(prev))))
-			prev = cp.At
-		}
-		// Remainder after the last checkpoint.
-		if tail := total - prev.Sub(t.Start); tail > 0 {
-			parts = append(parts, fmt.Sprintf("response=%s", round(tail)))
-		}
-		parts = append(parts, fmt.Sprintf("total=%s", round(total)))
-
-		log.Printf("[TIMING] %s %s  %s", r.Method, r.URL.Path, strings.Join(parts, "  "))
-	})
-}
-
-func round(d time.Duration) string {
-	switch {
-	case d < time.Microsecond:
-		return fmt.Sprintf("%dns", d.Nanoseconds())
-	case d < time.Millisecond:
-		return fmt.Sprintf("%.2fµs", float64(d.Nanoseconds())/1e3)
-	default:
-		return fmt.Sprintf("%.2fms", float64(d.Nanoseconds())/1e6)
-	}
-}

internal/routes/routes.go

@@ -1,18 +1,20 @@
 package routes
 
 import (
+	v2 "emly-api-go/internal/routes/v2"
 	"net/http"
 
 	v1 "emly-api-go/internal/routes/v1"
-	v2 "emly-api-go/internal/routes/v2"
-	"emly-api-go/internal/storage"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/jmoiron/sqlx"
 )
 
 // RegisterAll mounts every versioned API onto the root router.
-func RegisterAll(r chi.Router, db *sqlx.DB, s3conn *storage.S3Connector) {
+// To add a new API version, create internal/routes/v2 and add:
+//
+//	r.Mount("/v2", v2.NewRouter(db))
+func RegisterAll(r chi.Router, db *sqlx.DB) {
 	r.Get("/", func(w http.ResponseWriter, r *http.Request) {
 		_, err := w.Write([]byte("emly-api-go"))
 		if err != nil {
@@ -20,6 +22,6 @@ func RegisterAll(r chi.Router, db *sqlx.DB, s3conn *storage.S3Connector) {
 		}
 	})
 
-	r.Mount("/v1", v1.NewRouter(db, s3conn))
-	r.Mount("/v2", v2.NewRouter(db, s3conn))
+	r.Mount("/v1", v1.NewRouter(db))
+	r.Mount("/v2", v2.NewRouter(db))
 }

internal/routes/v1/admin.go

@@ -11,7 +11,7 @@ import (
 	"github.com/jmoiron/sqlx"
 )
 
-func registerAdmin(r chi.Router, db *sqlx.DB, dbName string) {
+func registerAdmin(r chi.Router, db *sqlx.DB) {
 	r.Route("/admin", func(r chi.Router) {
 
 		// Auth — public, handles its own credential checks.
@@ -40,14 +40,5 @@ func registerAdmin(r chi.Router, db *sqlx.DB, dbName string) {
 			r.Post("/{id}/reset-password", handlers.ResetPassword(db))
 			r.Delete("/{id}", handlers.DeleteUser(db))
 		})
-
-		// Backward-compatible alias for admin-prefixed bug report delete path.
-		r.Route("/bug-reports", func(r chi.Router) {
-			r.Use(apimw.APIKeyAuth(db))
-			r.Use(apimw.AdminKeyAuth(db))
-			r.Use(httprate.LimitByIP(30, time.Minute))
-
-			r.Delete("/{id}", handlers.DeleteBugReportByID(db, dbName))
-		})
 	})
 }

internal/routes/v1/bug_reports.go

@@ -5,14 +5,13 @@ import (
 	"time"
 
 	"emly-api-go/internal/handlers"
-	"emly-api-go/internal/storage"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/httprate"
 	"github.com/jmoiron/sqlx"
 )
 
-func registerBugReports(r chi.Router, db *sqlx.DB, dbName string, s3conn *storage.S3Connector) {
+func registerBugReports(r chi.Router, db *sqlx.DB, dbName string) {
 	r.Route("/bug-reports", func(r chi.Router) {
 		// API key only: submit a report and check count
 		r.Group(func(r chi.Router) {
@@ -20,7 +19,7 @@ func registerBugReports(r chi.Router, db *sqlx.DB, dbName string, s3conn *storag
 			r.Use(httprate.LimitByIP(30, time.Minute))
 
 			r.Get("/count", handlers.GetReportsCount(db, dbName))
-			r.Post("/", handlers.CreateBugReport(db, dbName, s3conn))
+			r.Post("/", handlers.CreateBugReport(db, dbName))
 		})
 
 		// API key + admin key: full read/write access
@@ -33,8 +32,8 @@ func registerBugReports(r chi.Router, db *sqlx.DB, dbName string, s3conn *storag
 			r.Get("/{id}", handlers.GetBugReportByID(db, dbName))
 			r.Get("/{id}/status", handlers.GetReportStatusByID(db, dbName))
 			r.Get("/{id}/files", handlers.GetReportFilesByReportID(db, dbName))
-			r.Get("/{id}/files/{file_id}", handlers.GetReportFileByFileID(db, dbName, s3conn))
-			r.Get("/{id}/download", handlers.GetBugReportZipByID(db, dbName))
+			r.Get("/{id}/files/{file_id}", handlers.GetReportFileByFileID(db, dbName))
+			r.Get("/{id}/download", handlers.GetBugReportZipById(db, dbName))
 			r.Patch("/{id}/status", handlers.PatchBugReportStatus(db, dbName))
 			r.Delete("/{id}", handlers.DeleteBugReportByID(db, dbName))
 		})

internal/routes/v1/v1.go

@@ -6,16 +6,16 @@ import (
 
 	"emly-api-go/internal/config"
 	"emly-api-go/internal/handlers"
-	"emly-api-go/internal/storage"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/jmoiron/sqlx"
 )
 
 // NewRouter returns a chi.Router with all /v1 routes mounted.
-func NewRouter(db *sqlx.DB, s3conn *storage.S3Connector) http.Handler {
+// Add new API versions by creating an analogous package (e.g. v2) and
+// mounting it alongside this one in internal/routes/routes.go.
+func NewRouter(db *sqlx.DB) http.Handler {
 	r := chi.NewRouter()
-	dbName := config.Load().Database
 
 	rl := emlyMiddleware.NewRateLimiter(config.Load())
 
@@ -32,8 +32,8 @@ func NewRouter(db *sqlx.DB, s3conn *storage.S3Connector) http.Handler {
 	r.Get("/health", handlers.Health(db))
 
 	r.Route("/api", func(r chi.Router) {
-		registerAdmin(r, db, dbName)
-		registerBugReports(r, db, dbName, s3conn)
+		registerAdmin(r, db)
+		registerBugReports(r, db, config.Load().Database)
 	})
 
 	return r

internal/routes/v2/bug_reports.go

@@ -5,14 +5,13 @@ import (
 	"time"
 
 	"emly-api-go/internal/handlers"
-	"emly-api-go/internal/storage"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/httprate"
 	"github.com/jmoiron/sqlx"
 )
 
-func registerBugReports(r chi.Router, db *sqlx.DB, dbName string, s3conn *storage.S3Connector) {
+func registerBugReports(r chi.Router, db *sqlx.DB, dbName string) {
 	r.Route("/bug-report", func(r chi.Router) {
 		// API key only: submit a report and check count
 		r.Group(func(r chi.Router) {
@@ -20,7 +19,7 @@ func registerBugReports(r chi.Router, db *sqlx.DB, dbName string, s3conn *storag
 			r.Use(httprate.LimitByIP(30, time.Minute))
 
 			r.Get("/count", handlers.GetReportsCount(db, dbName))
-			r.Post("/", handlers.CreateBugReport(db, dbName, s3conn))
+			r.Post("/", handlers.CreateBugReport(db, dbName))
 		})
 
 		// API key + admin key: full read/write access
@@ -33,8 +32,8 @@ func registerBugReports(r chi.Router, db *sqlx.DB, dbName string, s3conn *storag
 			r.Get("/{id}", handlers.GetBugReportByID(db, dbName))
 			r.Get("/{id}/status", handlers.GetReportStatusByID(db, dbName))
 			r.Get("/{id}/files", handlers.GetReportFilesByReportID(db, dbName))
-			r.Get("/{id}/files/{file_id}", handlers.GetReportFileByFileID(db, dbName, s3conn))
-			r.Get("/{id}/download", handlers.GetBugReportZipByID(db, dbName))
+			r.Get("/{id}/files/{file_id}", handlers.GetReportFileByFileID(db, dbName))
+			r.Get("/{id}/download", handlers.GetBugReportZipById(db, dbName))
 			r.Patch("/{id}/status", handlers.PatchBugReportStatus(db, dbName))
 			r.Delete("/{id}", handlers.DeleteBugReportByID(db, dbName))
 		})

internal/routes/v2/v2.go

@@ -6,14 +6,15 @@ import (
 
 	"emly-api-go/internal/config"
 	"emly-api-go/internal/handlers"
-	"emly-api-go/internal/storage"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/jmoiron/sqlx"
 )
 
-// NewRouter returns a chi.Router with all /v2 routes mounted.
-func NewRouter(db *sqlx.DB, s3conn *storage.S3Connector) http.Handler {
+// NewRouter returns a chi.Router with all /v1 routes mounted.
+// Add new API versions by creating an analogous package (e.g. v2) and
+// mounting it alongside this one in internal/routes/routes.go.
+func NewRouter(db *sqlx.DB) http.Handler {
 	r := chi.NewRouter()
 
 	rl := emlyMiddleware.NewRateLimiter(config.Load())
@@ -32,7 +33,7 @@ func NewRouter(db *sqlx.DB, s3conn *storage.S3Connector) http.Handler {
 
 	r.Route("/api", func(r chi.Router) {
 		registerAdmin(r, db)
-		registerBugReports(r, db, config.Load().Database, s3conn)
+		registerBugReports(r, db, config.Load().Database)
 	})
 
 	return r

internal/storage/migrateFiles.go

@@ -1,122 +0,0 @@
-package storage
-
-import (
-	"bytes"
-	"context"
-	"database/sql"
-	"emly-api-go/internal/models"
-	"errors"
-	"fmt"
-	"log"
-	"sync"
-	"time"
-
-	"github.com/jmoiron/sqlx"
-)
-
-func MigrateReportFilesToS3(db *sqlx.DB, s3conn *S3Connector, dbName string) error {
-	var wg sync.WaitGroup
-	errCh := make(chan error, 128) // buffer ragionevole
-	reportsRows, err := db.Query("SELECT id, created_at, updated_at FROM emly_bugreports_dev.bug_reports ORDER BY created_at DESC")
-	if err != nil {
-		return err
-	}
-	defer reportsRows.Close()
-
-	var totalReports, totalFiles, skipped, uploaded int
-
-	for reportsRows.Next() {
-		var reportId int
-		var createdAt, updatedAt time.Time
-
-		if err := reportsRows.Scan(
-			&reportId, &createdAt, &updatedAt,
-		); err != nil {
-			return err
-		}
-		totalReports++
-		log.Printf("[migrate] processing report %d", reportId)
-
-		filesRows, err := db.Query(
-			"SELECT id, report_id, filename FROM emly_bugreports_dev.bug_report_files WHERE report_id = ?",
-			reportId,
-		)
-
-		if err != nil {
-			return err
-		}
-
-		for filesRows.Next() {
-			var fileID int
-			var fileReportID int
-			var fileName string
-			if err := filesRows.Scan(&fileID, &fileReportID, &fileName); err != nil {
-				filesRows.Close()
-				return err
-			}
-
-			var file models.BugReportFile
-			err := db.GetContext(context.Background(), &file, fmt.Sprintf("SELECT filename, mime_type, data FROM %s.bug_report_files WHERE report_id = ? AND id = ?", dbName), reportId, fileID)
-			if errors.Is(err, sql.ErrNoRows) {
-				log.Printf("[migrate] report %d / file %d: not found in bug_report_files, skipping", reportId, fileID)
-				skipped++
-				continue
-			}
-			if err != nil {
-				filesRows.Close()
-				return fmt.Errorf("report %d / file %d: %w", reportId, fileID, err)
-			}
-
-			if s3conn != nil {
-				s3Key := fmt.Sprintf("emly-api-files/bug-reports/%d/files/%s", reportId, fileName)
-				dataCopy := make([]byte, len(file.Data))
-				copy(dataCopy, file.Data)
-				mime := file.MimeType
-				fname := file.Filename
-				totalFiles++
-				log.Printf("[migrate] report %d / file %d (%s, %d bytes): uploading to s3://%s", reportId, fileID, fname, len(dataCopy), s3Key)
-				wg.Add(1)
-				go func(key, mimeType, filename string, payload []byte, rid, fid int) {
-					defer wg.Done()
-
-					_, upErr := s3conn.UploadFile(
-						context.Background(),
-						key,
-						bytes.NewReader(payload),
-						mimeType,
-						map[string]string{"filename": filename},
-					)
-					if upErr != nil {
-						errCh <- fmt.Errorf("report %d / file %d (%s): %w", rid, fid, key, upErr)
-						log.Printf("[migrate] [ERROR] upload failed for s3://%s: %v", key, upErr)
-						return
-					}
-					log.Printf("[migrate] upload complete: s3://%s", key)
-				}(s3Key, mime, fname, dataCopy, reportId, fileID)
-
-				uploaded++
-			}
-		}
-
-		if err := filesRows.Close(); err != nil {
-			return err
-		}
-	}
-
-	wg.Wait()
-	close(errCh)
-
-	var uploadErrCount int
-	for e := range errCh {
-		uploadErrCount++
-		log.Printf("[migrate] [ERROR] %v", e)
-	}
-
-	log.Printf("[migrate] done — reports: %d, files queued: %d, skipped: %d, upload errors: %d",
-		totalReports, uploaded, skipped, uploadErrCount)
-
-	if uploadErrCount > 0 {
-		return fmt.Errorf("migration completed with %d upload errors", uploadErrCount)
-	}
-	return nil
-}

internal/storage/s3connector.go

@@ -1,322 +0,0 @@
-package storage
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"io"
-	"strings"
-	"time"
-
-	"emly-api-go/internal/config"
-
-	"github.com/aws/aws-sdk-go-v2/aws"
-	awsconfig "github.com/aws/aws-sdk-go-v2/config"
-	"github.com/aws/aws-sdk-go-v2/credentials"
-	"github.com/aws/aws-sdk-go-v2/feature/s3/manager"
-	"github.com/aws/aws-sdk-go-v2/service/s3"
-	"github.com/aws/aws-sdk-go-v2/service/s3/types"
-)
-
-type S3Connector struct {
-	client     *s3.Client
-	uploader   *manager.Uploader
-	downloader *manager.Downloader
-	bucket     string
-}
-
-type FileInfo struct {
-	Key          string
-	Size         int64
-	LastModified time.Time
-	ETag         string
-	ContentType  string
-	Metadata     map[string]string
-}
-
-// IsNotFound reports whether err represents a missing object (404 / NoSuchKey).
-func IsNotFound(err error) bool {
-	if err == nil {
-		return false
-	}
-	var nsk *types.NoSuchKey
-	if errors.As(err, &nsk) {
-		return true
-	}
-	// Fallback for S3-compatible stores (e.g. Cloudflare R2) that surface
-	// the error code via the generic APIError interface.
-	var ae interface{ ErrorCode() string }
-	if errors.As(err, &ae) {
-		switch ae.ErrorCode() {
-		case "NoSuchKey", "NotFound", "404":
-			return true
-		}
-	}
-	return false
-}
-
-type FolderInfo struct {
-	Prefix string
-}
-
-func NewCloudflareR2Connector(cfg config.R2Config) (*S3Connector, error) {
-	if cfg.AccessKeyID == "" || cfg.SecretAccessKey == "" || cfg.BucketName == "" {
-		return nil, fmt.Errorf("missing required R2 config fields (CF_R2_ACCESS_KEY_ID, CF_R2_SECRET_ACCESS_KEY, CF_R2_BUCKET_NAME)")
-	}
-
-	endpoint := cfg.Endpoint
-	if endpoint == "" {
-		if cfg.AccountID == "" {
-			return nil, fmt.Errorf("either CF_R2_ENDPOINT or CF_ACCOUNT_ID must be set")
-		}
-		endpoint = fmt.Sprintf("https://%s.r2.cloudflarestorage.com", cfg.AccountID)
-	}
-
-	region := cfg.Region
-	if region == "" {
-		region = "auto"
-	}
-
-	awsCfg, err := awsconfig.LoadDefaultConfig(context.TODO(),
-		awsconfig.WithCredentialsProvider(credentials.NewStaticCredentialsProvider(cfg.AccessKeyID, cfg.SecretAccessKey, "")),
-		awsconfig.WithRegion(region),
-	)
-	if err != nil {
-		return nil, fmt.Errorf("failed to load R2 config: %w", err)
-	}
-
-	client := s3.NewFromConfig(awsCfg, func(o *s3.Options) {
-		o.BaseEndpoint = aws.String(endpoint)
-		o.UsePathStyle = true
-	})
-
-	return &S3Connector{
-		client:     client,
-		uploader:   manager.NewUploader(client),
-		downloader: manager.NewDownloader(client),
-		bucket:     cfg.BucketName,
-	}, nil
-}
-
-// Ping verifies connectivity by calling HeadBucket on the configured bucket.
-func (c *S3Connector) Ping(ctx context.Context) error {
-	_, err := c.client.HeadBucket(ctx, &s3.HeadBucketInput{
-		Bucket: aws.String(c.bucket),
-	})
-	if err != nil {
-		return fmt.Errorf("R2 ping failed for bucket %q: %w", c.bucket, err)
-	}
-	return nil
-}
-
-// UploadFile uploads body to key in the bucket and returns the public URL.
-// metadata is optional; pass nil if not needed.
-func (c *S3Connector) UploadFile(ctx context.Context, key string, body io.Reader, contentType string, metadata map[string]string) (string, error) {
-	result, err := c.uploader.Upload(ctx, &s3.PutObjectInput{
-		Bucket:      aws.String(c.bucket),
-		Key:         aws.String(key),
-		Body:        body,
-		ContentType: aws.String(contentType),
-		Metadata:    metadata,
-	})
-	if err != nil {
-		return "", fmt.Errorf("upload %q: %w", key, err)
-	}
-	return result.Location, nil
-}
-
-// GetFile returns the object body at key. Caller must close it.
-func (c *S3Connector) GetFile(ctx context.Context, key string) (io.ReadCloser, *FileInfo, error) {
-	out, err := c.client.GetObject(ctx, &s3.GetObjectInput{
-		Bucket: aws.String(c.bucket),
-		Key:    aws.String(key),
-	})
-	if err != nil {
-		return nil, nil, fmt.Errorf("get %q: %w", key, err)
-	}
-
-	info := &FileInfo{
-		Key:         key,
-		Size:        aws.ToInt64(out.ContentLength),
-		ETag:        strings.Trim(aws.ToString(out.ETag), `"`),
-		ContentType: aws.ToString(out.ContentType),
-		Metadata:    out.Metadata,
-	}
-	if out.LastModified != nil {
-		info.LastModified = *out.LastModified
-	}
-
-	return out.Body, info, nil
-}
-
-// DownloadFile downloads key into dst and returns bytes written.
-func (c *S3Connector) DownloadFile(ctx context.Context, key string, dst io.WriterAt) (int64, error) {
-	n, err := c.downloader.Download(ctx, dst, &s3.GetObjectInput{
-		Bucket: aws.String(c.bucket),
-		Key:    aws.String(key),
-	})
-	if err != nil {
-		return 0, fmt.Errorf("download %q: %w", key, err)
-	}
-	return n, nil
-}
-
-// DeleteFile deletes the object at key.
-func (c *S3Connector) DeleteFile(ctx context.Context, key string) error {
-	_, err := c.client.DeleteObject(ctx, &s3.DeleteObjectInput{
-		Bucket: aws.String(c.bucket),
-		Key:    aws.String(key),
-	})
-	if err != nil {
-		return fmt.Errorf("delete %q: %w", key, err)
-	}
-	return nil
-}
-
-// DeleteFiles deletes up to 1000 objects in one request.
-func (c *S3Connector) DeleteFiles(ctx context.Context, keys []string) error {
-	if len(keys) == 0 {
-		return nil
-	}
-	objects := make([]types.ObjectIdentifier, len(keys))
-	for i, k := range keys {
-		objects[i] = types.ObjectIdentifier{Key: aws.String(k)}
-	}
-	_, err := c.client.DeleteObjects(ctx, &s3.DeleteObjectsInput{
-		Bucket: aws.String(c.bucket),
-		Delete: &types.Delete{Objects: objects, Quiet: aws.Bool(true)},
-	})
-	if err != nil {
-		return fmt.Errorf("batch delete: %w", err)
-	}
-	return nil
-}
-
-// RenameFile copies src to dst then deletes src (R2 has no native rename).
-func (c *S3Connector) RenameFile(ctx context.Context, srcKey, dstKey string) error {
-	_, err := c.client.CopyObject(ctx, &s3.CopyObjectInput{
-		Bucket:     aws.String(c.bucket),
-		CopySource: aws.String(c.bucket + "/" + srcKey),
-		Key:        aws.String(dstKey),
-	})
-	if err != nil {
-		return fmt.Errorf("copy %q → %q: %w", srcKey, dstKey, err)
-	}
-	return c.DeleteFile(ctx, srcKey)
-}
-
-// ListFiles returns all objects directly under prefix (non-recursive).
-func (c *S3Connector) ListFiles(ctx context.Context, prefix string) ([]FileInfo, error) {
-	prefix = normalizePrefix(prefix)
-
-	var files []FileInfo
-	pager := s3.NewListObjectsV2Paginator(c.client, &s3.ListObjectsV2Input{
-		Bucket:    aws.String(c.bucket),
-		Prefix:    aws.String(prefix),
-		Delimiter: aws.String("/"),
-	})
-	for pager.HasMorePages() {
-		page, err := pager.NextPage(ctx)
-		if err != nil {
-			return nil, fmt.Errorf("list files under %q: %w", prefix, err)
-		}
-		for _, obj := range page.Contents {
-			key := aws.ToString(obj.Key)
-			if strings.HasSuffix(key, "/") {
-				continue // skip folder placeholders
-			}
-			fi := FileInfo{
-				Key:  key,
-				Size: aws.ToInt64(obj.Size),
-				ETag: strings.Trim(aws.ToString(obj.ETag), `"`),
-			}
-			if obj.LastModified != nil {
-				fi.LastModified = *obj.LastModified
-			}
-			files = append(files, fi)
-		}
-	}
-	return files, nil
-}
-
-// ListFolders returns the immediate sub-folders under prefix.
-func (c *S3Connector) ListFolders(ctx context.Context, prefix string) ([]FolderInfo, error) {
-	prefix = normalizePrefix(prefix)
-
-	var folders []FolderInfo
-	pager := s3.NewListObjectsV2Paginator(c.client, &s3.ListObjectsV2Input{
-		Bucket:    aws.String(c.bucket),
-		Prefix:    aws.String(prefix),
-		Delimiter: aws.String("/"),
-	})
-	for pager.HasMorePages() {
-		page, err := pager.NextPage(ctx)
-		if err != nil {
-			return nil, fmt.Errorf("list folders under %q: %w", prefix, err)
-		}
-		for _, cp := range page.CommonPrefixes {
-			folders = append(folders, FolderInfo{Prefix: aws.ToString(cp.Prefix)})
-		}
-	}
-	return folders, nil
-}
-
-// CreateFolder writes a zero-byte placeholder object to make the folder visible.
-func (c *S3Connector) CreateFolder(ctx context.Context, folderPath string) error {
-	key := normalizePrefix(folderPath)
-	if key == "" {
-		return fmt.Errorf("folder path cannot be empty")
-	}
-	_, err := c.client.PutObject(ctx, &s3.PutObjectInput{
-		Bucket:        aws.String(c.bucket),
-		Key:           aws.String(key),
-		ContentLength: aws.Int64(0),
-	})
-	if err != nil {
-		return fmt.Errorf("create folder %q: %w", key, err)
-	}
-	return nil
-}
-
-// DeleteFolder removes all objects under folderPath in batches of 1000.
-func (c *S3Connector) DeleteFolder(ctx context.Context, folderPath string) error {
-	prefix := normalizePrefix(folderPath)
-
-	var keys []string
-	pager := s3.NewListObjectsV2Paginator(c.client, &s3.ListObjectsV2Input{
-		Bucket: aws.String(c.bucket),
-		Prefix: aws.String(prefix),
-	})
-	for pager.HasMorePages() {
-		page, err := pager.NextPage(ctx)
-		if err != nil {
-			return fmt.Errorf("list for delete %q: %w", prefix, err)
-		}
-		for _, obj := range page.Contents {
-			keys = append(keys, aws.ToString(obj.Key))
-		}
-	}
-
-	for i := 0; i < len(keys); i += 1000 {
-		end := i + 1000
-		if end > len(keys) {
-			end = len(keys)
-		}
-		if err := c.DeleteFiles(ctx, keys[i:end]); err != nil {
-			return err
-		}
-	}
-	return nil
-}
-
-// normalizePrefix ensures prefix ends with "/" (returns "" for root).
-func normalizePrefix(p string) string {
-	p = strings.TrimPrefix(p, "/")
-	if p == "" {
-		return ""
-	}
-	if !strings.HasSuffix(p, "/") {
-		p += "/"
-	}
-	return p
-}

internal/timing/timing.go

@@ -1,50 +0,0 @@
-package timing
-
-import (
-	"context"
-	"time"
-)
-
-type contextKey struct{}
-
-// Checkpoint is a named point in time recorded during request processing.
-type Checkpoint struct {
-	Name string
-	At   time.Time
-}
-
-// Timer records the request start time and named checkpoints.
-type Timer struct {
-	Start       time.Time
-	checkpoints []Checkpoint
-}
-
-// Mark records a checkpoint with the given name.
-func (t *Timer) Mark(name string) {
-	t.checkpoints = append(t.checkpoints, Checkpoint{Name: name, At: time.Now()})
-}
-
-// Checkpoints returns all recorded checkpoints in order.
-func (t *Timer) Checkpoints() []Checkpoint {
-	return t.checkpoints
-}
-
-// NewContext attaches a new Timer to ctx and returns both.
-func NewContext(ctx context.Context) (context.Context, *Timer) {
-	t := &Timer{Start: time.Now()}
-	return context.WithValue(ctx, contextKey{}, t), t
-}
-
-// FromContext retrieves the Timer from ctx, or nil if not present.
-func FromContext(ctx context.Context) *Timer {
-	t, _ := ctx.Value(contextKey{}).(*Timer)
-	return t
-}
-
-// Mark records a checkpoint in the Timer stored in ctx, if any.
-// It is a no-op when ctx carries no Timer (e.g. in tests).
-func Mark(ctx context.Context, name string) {
-	if t := FromContext(ctx); t != nil {
-		t.Mark(name)
-	}
-}

main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"context"
 	"fmt"
 	"log"
 	"net/http"
@@ -17,7 +16,6 @@ import (
 	"emly-api-go/internal/database"
 	"emly-api-go/internal/database/schema"
 	"emly-api-go/internal/routes"
-	"emly-api-go/internal/storage"
 
 	emlyMiddleware "emly-api-go/internal/middleware"
 )
@@ -44,41 +42,10 @@ func main() {
 	}(db)
 
 	// Run conditional schema migrations
-	if err := schema.Migrate(db, cfg.Database); err != nil {
+	if err := schema.Migrate(db, cfg.Database, cfg.Driver); err != nil {
 		log.Fatalf("schema migration failed: %v", err)
 	}
 
-	var s3conn *storage.S3Connector
-	if cfg.UseS3CompatibleStorage {
-		conn, err := storage.NewCloudflareR2Connector(cfg.R2)
-		if err != nil {
-			log.Fatalf("R2 connector init failed: %v", err)
-		}
-		if err := conn.Ping(context.Background()); err != nil {
-			log.Fatalf("R2 connection test failed: %v", err)
-		}
-		log.Printf("R2 storage connected (bucket: %s)", cfg.R2.BucketName)
-		s3conn = conn
-	}
-
-	argsWithoutProg := os.Args[1:]
-	for _, arg := range argsWithoutProg {
-		log.Printf("arg: %s", arg)
-		if arg == "--migrate-files" {
-			if cfg.UseS3CompatibleStorage && s3conn != nil {
-				log.Printf("migrate report files from db to s3...")
-				if err := storage.MigrateReportFilesToS3(db, s3conn, cfg.Database); err != nil {
-					log.Fatalf("migrating report files failed: %v", err)
-				}
-				log.Printf("migrate report files from db to s3 completed successfully")
-				continue
-			} else {
-				log.Printf("migrate report files from db to s3 skipped (R2 not enabled)")
-			}
-
-		}
-	}
-
 	r := chi.NewRouter()
 
 	// Global middlewares
@@ -87,13 +54,12 @@ func main() {
 	r.Use(middleware.Logger)
 	r.Use(middleware.Recoverer)
 	r.Use(middleware.Timeout(30 * time.Second))
-	r.Use(emlyMiddleware.Timing)
 
 	rl := emlyMiddleware.NewRateLimiter(cfg)
 
 	r.Use(rl.Handler)
 
-	routes.RegisterAll(r, db, s3conn)
+	routes.RegisterAll(r, db)
 
 	addr := fmt.Sprintf(":%s", cfg.Port)
 	log.Printf("server listening on %s", addr)