Initial AI media hub implementation

backend/main.go

@@ -0,0 +1,66 @@
+package main
+
+import (
+	"log"
+	"net/http"
+	"os"
+	"path/filepath"
+
+	"ai-media-hub/backend/handlers"
+	"ai-media-hub/backend/models"
+	"ai-media-hub/backend/services"
+
+	"github.com/gin-gonic/gin"
+)
+
+func main() {
+	root := envOrDefault("APP_ROOT", "/app")
+	dbPath := envOrDefault("SQLITE_PATH", filepath.Join(root, "db", "media.db"))
+	downloadsDir := envOrDefault("DOWNLOADS_DIR", filepath.Join(root, "downloads"))
+	frontendDir := envOrDefault("FRONTEND_DIR", filepath.Join(root, "frontend"))
+	workerScript := envOrDefault("WORKER_SCRIPT", filepath.Join(root, "worker", "downloader.py"))
+
+	db, err := models.InitDB(dbPath)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	if err := handlers.EnsurePaths(downloadsDir, workerScript); err != nil {
+		log.Fatal(err)
+	}
+
+	app := &handlers.App{
+		DB:            db,
+		DownloadsDir:  downloadsDir,
+		WorkerScript:  workerScript,
+		SearchService: services.NewSearchService(os.Getenv("GOOGLE_CSE_API_KEY"), os.Getenv("GOOGLE_CSE_CX")),
+		GeminiService: services.NewGeminiService(os.Getenv("GEMINI_API_KEY")),
+		Hub:           handlers.NewHub(),
+	}
+
+	router := gin.Default()
+	handlers.RegisterRoutes(router, app)
+	router.StaticFile("/", filepath.Join(frontendDir, "index.html"))
+	router.StaticFile("/app.js", filepath.Join(frontendDir, "app.js"))
+	router.StaticFile("/style.css", filepath.Join(frontendDir, "style.css"))
+	router.NoRoute(func(c *gin.Context) {
+		c.File(filepath.Join(frontendDir, "index.html"))
+	})
+	router.NoMethod(func(c *gin.Context) {
+		c.JSON(http.StatusMethodNotAllowed, gin.H{"error": "method not allowed"})
+	})
+
+	addr := envOrDefault("APP_ADDR", ":8080")
+	log.Printf("server listening on %s", addr)
+	if err := router.Run(addr); err != nil {
+		log.Fatal(err)
+	}
+}
+
+func envOrDefault(key, fallback string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return fallback
+}