package api

import (
	"database/sql"
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/yourusername/victorialogs-manager/internal/api/handlers"
	"github.com/yourusername/victorialogs-manager/internal/api/middleware"
	"github.com/yourusername/victorialogs-manager/internal/config"
	"github.com/yourusername/victorialogs-manager/internal/repository"
	"github.com/yourusername/victorialogs-manager/internal/services"
	"github.com/yourusername/victorialogs-manager/internal/utils"
)

// NewRouter creates and configures the main router
func NewRouter(cfg *config.Config, db *sql.DB) *gin.Engine {
	// Set Gin mode
	gin.SetMode(gin.ReleaseMode)

	router := gin.New()

	// Global middleware
	router.Use(gin.Recovery())
	router.Use(middleware.CORSMiddleware())
	router.Use(middleware.RequestLogger())

	// Initialize JWT manager
	jwtManager := utils.NewJWTManager(
		cfg.Auth.JWTSecret,
		cfg.Auth.AccessTokenDuration,
		cfg.Auth.RefreshTokenDuration,
	)

	// Initialize repositories
	userRepo := repository.NewUserRepository(db)

	// Initialize services
	authService := services.NewAuthService(userRepo, jwtManager)
	userService := services.NewUserService(userRepo)

	// Initialize handlers
	authHandler := handlers.NewAuthHandler(authService)
	userHandler := handlers.NewUserHandler(userService)

	// Health check endpoint
	router.GET("/health", func(c *gin.Context) {
		c.JSON(http.StatusOK, gin.H{
			"status":  "ok",
			"service": "victorialogs-manager",
		})
	})

	// API v1 routes
	v1 := router.Group("/api/v1")
	{
		// Authentication routes (public)
		auth := v1.Group("/auth")
		{
			auth.POST("/login", authHandler.Login)
			auth.POST("/refresh", authHandler.RefreshToken)
		}

		// Protected auth routes (require authentication)
		authProtected := v1.Group("/auth")
		authProtected.Use(middleware.AuthMiddleware(jwtManager))
		{
			authProtected.GET("/me", authHandler.GetMe)
			authProtected.POST("/change-password", authHandler.ChangePassword)
		}

		// User management routes (admin only)
		users := v1.Group("/users")
		users.Use(middleware.AuthMiddleware(jwtManager))
		users.Use(middleware.RequireAdmin())
		{
			users.GET("", userHandler.ListUsers)
			users.POST("", userHandler.CreateUser)
			users.GET("/:id", userHandler.GetUser)
			users.PUT("/:id", userHandler.UpdateUser)
			users.DELETE("/:id", userHandler.DeleteUser)
			users.POST("/:id/reset-password", userHandler.ResetUserPassword)
		}

		// Log querying routes (protected)
		logs := v1.Group("/logs")
		logs.Use(middleware.AuthMiddleware(jwtManager))
		{
			logs.POST("/query", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			logs.POST("/tail", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			logs.GET("/facets", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			logs.POST("/stats", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			logs.POST("/export", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
		}

		// Alert management routes (protected)
		alerts := v1.Group("/alerts")
		alerts.Use(middleware.AuthMiddleware(jwtManager))
		{
			alerts.GET("/rules", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			alerts.POST("/rules", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			alerts.GET("/rules/:id", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			alerts.PUT("/rules/:id", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			alerts.DELETE("/rules/:id", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			alerts.POST("/reload", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			alerts.GET("/active", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
		}

		// Pattern detection routes (protected)
		patterns := v1.Group("/patterns")
		patterns.Use(middleware.AuthMiddleware(jwtManager))
		{
			patterns.GET("", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			patterns.POST("", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			patterns.PUT("/:id", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			patterns.DELETE("/:id", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			patterns.POST("/detect", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			patterns.POST("/ml/train", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			patterns.POST("/ml/detect", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
		}

		// Report routes (protected)
		reports := v1.Group("/reports")
		reports.Use(middleware.AuthMiddleware(jwtManager))
		{
			reports.GET("", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			reports.POST("", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			reports.GET("/:id", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			reports.PUT("/:id", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			reports.DELETE("/:id", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
			reports.POST("/:id/execute", func(c *gin.Context) {
				c.JSON(http.StatusNotImplemented, gin.H{"message": "not implemented yet"})
			})
		}
	}

	return router
}