package main

import (
	"fmt"
	"log"

	"github.com/gin-contrib/sessions"
	"github.com/gin-contrib/sessions/cookie"
	"github.com/gin-gonic/gin"

	"go_blog/config"
	"go_blog/handlers"
	"go_blog/middleware"
	"go_blog/models"
)

func main() {
	// 1. Load configuration (auto-creates if missing).
	cfg := config.LoadConfig()

	// 2. Initialize the database (auto-migrates, seeds admin).
	db := models.InitDB(cfg)

	// 2b. Warm the platform configuration cache from the database.
	models.LoadConfigCache(db)

	// 3. Create session store (cookie-based).
	store := cookie.NewStore([]byte(cfg.Secret))
	store.Options(sessions.Options{
		Path:     "/",
		MaxAge:   86400, // 24 hours
		HttpOnly: true,  // prevent XSS access
		Secure:   false, // set true in production with HTTPS
	})

	// 4. Create Gin router.
	router := gin.Default()

	// 5. Load HTML templates.
	router.LoadHTMLGlob("templates/**/*.html")

	// 6. Serve uploaded files (avatars etc.) from the storage path.
	router.Static("/uploads", cfg.Path)

	// 6. Global session middleware.
	router.Use(sessions.Sessions("blog_session", store))

	// 7. Global context middleware (sets IsLoggedIn, Username for templates).
	router.Use(middleware.SetUserContext(db))

	// 8. Register routes.
	router.GET("/", handlers.HomePage(db))
	router.GET("/login", handlers.LoginPage())
	router.POST("/login", handlers.Login(db))
	router.POST("/logout", handlers.Logout())
	router.GET("/article/:slug", handlers.ArticleDetail(db))
	router.POST("/article/:slug/comments", handlers.PostComment(db))

	// Protected admin routes.
	admin := router.Group("/admin")
	admin.Use(middleware.AuthRequired())
	{
		admin.GET("", handlers.AdminDashboard(db))
		admin.GET("/articles", handlers.ArticleListPage(db))
		admin.GET("/articles/new", handlers.ArticleCreatePage(db))
		admin.POST("/articles/new", handlers.ArticleCreate(db))
		admin.GET("/articles/:id/edit", handlers.ArticleEditPage(db))
		admin.POST("/articles/:id/edit", handlers.ArticleUpdate(db))
		admin.POST("/articles/:id/delete", handlers.ArticleDelete(db))

		admin.GET("/comments", handlers.CommentListPage(db))
		admin.POST("/comments/:id/approve", handlers.CommentApprove(db))
		admin.POST("/comments/:id/reject", handlers.CommentReject(db))
		admin.POST("/comments/:id/delete", handlers.CommentDelete(db))
	}

	// Protected article attachment routes (AJAX uploads / management).
	attachments := router.Group("/admin/articles")
	attachments.Use(middleware.AuthRequired())
	{
		attachments.POST("/attachments", handlers.UploadAttachment(db, cfg.Path))
		attachments.POST("/attachments/:id/delete", handlers.DeleteAttachment(db, cfg.Path))
		attachments.GET("/:id/attachments", handlers.ListAttachments(db))
	}

	// Protected admin settings routes (platform configuration).
	settings := router.Group("/admin/settings")
	settings.Use(middleware.AuthRequired())
	{
		settings.GET("/site", handlers.SiteSettingsPage(db))
		settings.POST("/site", handlers.SiteSettingsSave(db, cfg.Path))
		settings.GET("/upload", handlers.UploadSettingsPage(db))
		settings.POST("/upload", handlers.UploadSettingsSave(db))
		settings.GET("/download", handlers.DownloadSettingsPage(db))
		settings.POST("/download", handlers.DownloadSettingsSave(db))
		settings.GET("/comments", handlers.CommentSettingsPage(db))
		settings.POST("/comments", handlers.CommentSettingsSave(db))
	}

	// Protected profile routes.
	profile := router.Group("/profile")
	profile.Use(middleware.AuthRequired())
	{
		profile.GET("", handlers.ProfilePage(db))
		profile.POST("", handlers.UpdateProfile(db, cfg.Path))
		profile.POST("/avatar", handlers.UploadAvatar(db, cfg.Path))
	}

	// 9. Start the server.
	addr := fmt.Sprintf(":%s", cfg.Port)
	log.Printf("Go Blog starting on http://localhost%s", addr)
	if err := router.Run(addr); err != nil {
		log.Fatalf("Failed to start server: %v", err)
	}
}