package main

import (
	"log"

	"github.com/gin-gonic/gin"

	"git.gobha.me/xcaliber/chat-switchboard/config"
	"git.gobha.me/xcaliber/chat-switchboard/database"
	"git.gobha.me/xcaliber/chat-switchboard/handlers"
	"git.gobha.me/xcaliber/chat-switchboard/middleware"
)

func main() {
	cfg := config.Load()

	if err := database.Connect(cfg); err != nil {
		log.Printf("⚠ Database unavailable: %v", err)
		log.Println("  Running in unmanaged mode (no persistence)")
	}
	defer database.Close()

	r := gin.Default()
	r.Use(middleware.CORS())

	// Health check
	r.GET("/health", func(c *gin.Context) {
		c.JSON(200, gin.H{
			"status":   "ok",
			"version":  Version,
			"database": database.IsConnected(),
		})
	})

	// ── Auth routes (rate limited) ──────────────
	auth := handlers.NewAuthHandler(cfg)
	authLimiter := middleware.NewRateLimiter(1, 5)

	api := r.Group("/api/v1") 
    {
        api.GET("/health", func(c *gin.Context) {
            c.JSON(200, gin.H{
                "status":   "ok",
                "version":  Version,
                "database": database.IsConnected(),
            })
        })

		authGroup := api.Group("/auth")
		authGroup.Use(authLimiter.Limit())
		{
			authGroup.POST("/register", auth.Register)
			authGroup.POST("/login", auth.Login)
			authGroup.POST("/refresh", auth.Refresh)
			authGroup.POST("/logout", auth.Logout)
		}

		// ── Protected routes ────────────────────
		protected := api.Group("")
		protected.Use(middleware.Auth(cfg))
		{
			// Chats
			chats := handlers.NewChatHandler()
			protected.GET("/chats", chats.ListChats)
			protected.POST("/chats", chats.CreateChat)
			protected.GET("/chats/:id", chats.GetChat)
			protected.PUT("/chats/:id", chats.UpdateChat)
			protected.DELETE("/chats/:id", chats.DeleteChat)

			// Messages
			msgs := handlers.NewMessageHandler()
			protected.GET("/chats/:id/messages", msgs.ListMessages)
			protected.POST("/chats/:id/messages", msgs.CreateMessage)
			protected.POST("/chats/:id/regenerate", msgs.Regenerate)

			// Settings — ticket #10
			protected.GET("/settings", stubHandler("settings"))
			protected.PUT("/settings", stubHandler("settings"))

			// API Configs — ticket #10
			protected.GET("/api-configs", stubHandler("api-configs"))
			protected.POST("/api-configs", stubHandler("api-configs"))
			protected.DELETE("/api-configs/:id", stubHandler("api-configs"))

			// Models — ticket #10
			protected.GET("/models", stubHandler("models"))
		}
	}

	log.Printf("🔀 Chat Switchboard API v%s starting on port %s", Version, cfg.Port)
	if err := r.Run(":" + cfg.Port); err != nil {
		log.Fatalf("Failed to start server: %v", err)
	}
}

func stubHandler(feature string) gin.HandlerFunc {
	return func(c *gin.Context) {
		c.JSON(501, gin.H{"error": feature + " not implemented"})
	}
}