add initial project structure with configuration, models, and API key authentication

internal/config/config.go

@@ -0,0 +1,34 @@
+package config
+
+import (
+	"os"
+	"strings"
+)
+
+type Config struct {
+	Port    string
+	DSN     string
+	APIKeys []string
+}
+
+func Load() *Config {
+	port := os.Getenv("PORT")
+	if port == "" {
+		port = "8080"
+	}
+
+	raw := os.Getenv("API_KEYS")
+	var keys []string
+	for _, k := range strings.Split(raw, ",") {
+		k = strings.TrimSpace(k)
+		if k != "" {
+			keys = append(keys, k)
+		}
+	}
+
+	return &Config{
+		Port:    port,
+		DSN:     os.Getenv("DB_DSN"),
+		APIKeys: keys,
+	}
+}

internal/database/database.go

@@ -0,0 +1,23 @@
+package database
+
+import (
+	"time"
+
+	_ "github.com/go-sql-driver/mysql"
+	"github.com/jmoiron/sqlx"
+
+	"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
+	}
+
+	db.SetMaxOpenConns(25)
+	db.SetMaxIdleConns(5)
+	db.SetConnMaxLifetime(5 * time.Minute)
+
+	return db, nil
+}

internal/handlers/example.go

@@ -0,0 +1,24 @@
+package handlers
+
+import (
+	"encoding/json"
+	"io"
+	"net/http"
+)
+
+var ExampleGet http.HandlerFunc = func(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(map[string]string{"message": "example GET"})
+}
+
+var ExamplePost http.HandlerFunc = func(w http.ResponseWriter, r *http.Request) {
+	body, _ := io.ReadAll(r.Body)
+	defer r.Body.Close()
+
+	w.Header().Set("Content-Type", "application/json")
+	w.WriteHeader(http.StatusCreated)
+	json.NewEncoder(w).Encode(map[string]any{
+		"message":  "example POST",
+		"received": string(body),
+	})
+}

internal/handlers/health.go

@@ -0,0 +1,27 @@
+package handlers
+
+import (
+	"context"
+	"encoding/json"
+	"net/http"
+	"time"
+
+	"github.com/jmoiron/sqlx"
+)
+
+func Health(db *sqlx.DB) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		ctx, cancel := context.WithTimeout(r.Context(), 3*time.Second)
+		defer cancel()
+
+		w.Header().Set("Content-Type", "application/json")
+
+		if err := db.PingContext(ctx); err != nil {
+			w.WriteHeader(http.StatusServiceUnavailable)
+			json.NewEncoder(w).Encode(map[string]string{"status": "ok", "db": "error"})
+			return
+		}
+
+		json.NewEncoder(w).Encode(map[string]string{"status": "ok", "db": "ok"})
+	}
+}

internal/middleware/apikey.go

@@ -0,0 +1,32 @@
+package middleware
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/jmoiron/sqlx"
+
+	"emly-api-go/internal/config"
+)
+
+func APIKeyAuth(_ *sqlx.DB) func(http.Handler) http.Handler {
+	cfg := config.Load()
+
+	allowed := make(map[string]struct{}, len(cfg.APIKeys))
+	for _, k := range cfg.APIKeys {
+		allowed[k] = struct{}{}
+	}
+
+	return func(next http.Handler) http.Handler {
+		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			key := r.Header.Get("X-API-Key")
+			if _, ok := allowed[key]; !ok {
+				w.Header().Set("Content-Type", "application/json")
+				w.WriteHeader(http.StatusUnauthorized)
+				json.NewEncoder(w).Encode(map[string]string{"error": "unauthorized"})
+				return
+			}
+			next.ServeHTTP(w, r)
+		})
+	}
+}

internal/models/bug_report.go

@@ -0,0 +1,26 @@
+package models
+
+import (
+	"encoding/json"
+	"time"
+)
+
+type BugReportStatus string
+
+const (
+	BugReportStatusOpen       BugReportStatus = "open"
+	BugReportStatusInProgress BugReportStatus = "in_progress"
+	BugReportStatusResolved   BugReportStatus = "resolved"
+	BugReportStatusClosed     BugReportStatus = "closed"
+)
+
+type BugReport struct {
+	ID          int64           `db:"id"           json:"id"`
+	UserID      *int64          `db:"user_id"      json:"user_id"`
+	Title       string          `db:"title"        json:"title"`
+	Description string          `db:"description"  json:"description"`
+	Status      BugReportStatus `db:"status"       json:"status"`
+	SystemInfo  json.RawMessage `db:"system_info"  json:"system_info,omitempty"`
+	CreatedAt   time.Time       `db:"created_at"   json:"created_at"`
+	UpdatedAt   time.Time       `db:"updated_at"   json:"updated_at"`
+}

internal/models/bug_report_file.go

@@ -0,0 +1,21 @@
+package models
+
+import "time"
+
+type FileRole string
+
+const (
+	FileRoleAttachment FileRole = "attachment"
+	FileRoleScreenshot FileRole = "screenshot"
+	FileRoleLog        FileRole = "log"
+)
+
+type BugReportFile struct {
+	ID          int64     `db:"id"            json:"id"`
+	BugReportID int64     `db:"bug_report_id" json:"bug_report_id"`
+	Filename    string    `db:"filename"      json:"filename"`
+	MimeType    string    `db:"mime_type"     json:"mime_type"`
+	Role        FileRole  `db:"role"          json:"role"`
+	Data        []byte    `db:"data"          json:"-"`
+	CreatedAt   time.Time `db:"created_at"   json:"created_at"`
+}

internal/models/rate_limit_hwid.go

@@ -0,0 +1,9 @@
+package models
+
+import "time"
+
+type RateLimitHWID struct {
+	HWID        string    `db:"hwid"       json:"hwid"`
+	Requests    int       `db:"requests"   json:"requests"`
+	WindowStart time.Time `db:"window_start" json:"window_start"`
+}

internal/models/session.go

@@ -0,0 +1,11 @@
+package models
+
+import "time"
+
+type Session struct {
+	ID        string    `db:"id"         json:"id"`
+	UserID    int64     `db:"user_id"    json:"user_id"`
+	Token     string    `db:"token"      json:"token"`
+	ExpiresAt time.Time `db:"expires_at" json:"expires_at"`
+	CreatedAt time.Time `db:"created_at" json:"created_at"`
+}

internal/models/user.go

@@ -0,0 +1,21 @@
+package models
+
+import "time"
+
+type UserRole string
+
+const (
+	UserRoleAdmin UserRole = "admin"
+	UserRoleUser  UserRole = "user"
+)
+
+type User struct {
+	ID           int64     `db:"id"            json:"id"`
+	Username     string    `db:"username"      json:"username"`
+	Email        string    `db:"email"         json:"email"`
+	PasswordHash string    `db:"password_hash" json:"-"`
+	Role         UserRole  `db:"role"          json:"role"`
+	Enabled      bool      `db:"enabled"       json:"enabled"`
+	CreatedAt    time.Time `db:"created_at"    json:"created_at"`
+	UpdatedAt    time.Time `db:"updated_at"    json:"updated_at"`
+}