package main

import (
	"fmt"
	"log"
	"time"

	"github.com/gofiber/fiber/v3"
	"github.com/gofiber/fiber/v3/middleware/logger"
	"github.com/gofiber/fiber/v3/middleware/recover"
	"github.com/gofiber/fiber/v3/middleware/static"

	"github.com/rogeecn/database_render/internal/template"
)

func main() {
	// Initialize logging
	// slog.SetLogLoggerLevel(slog.LevelDebug)

	// Create template loader
	config := template.TemplateConfig{
		BuiltinPath:  "./web/templates/builtin",
		CustomPath:   "./web/templates/custom",
		CacheEnabled: true,
		HotReload:    true,
	}

	loader := template.NewTemplateLoader(config)
	defer func() {
		if loader.HotReload != nil {
			loader.HotReload.Stop()
		}
	}()

	// Create Fiber app
	app := fiber.New()

	// Middleware
	app.Use(recover.New())
	app.Use(logger.New())
	app.Use(static.New("./web/static"))

	// API routes
	setupAPIRoutes(app, loader)

	// Start server
	port := ":8080"
	fmt.Printf("Template system server starting on http://localhost%s\n", port)
	if err := app.Listen(port); err != nil {
		log.Fatal(err)
	}
}

func setupAPIRoutes(app *fiber.App, loader *template.TemplateLoader) {
	// Template API routes
	api := app.Group("/api/templates")

	// Get available templates
	api.Get("/available", func(c fiber.Ctx) error {
		table := c.Query("table", "default")
		templates, err := loader.GetAvailableTemplates(table)
		if err != nil {
			return c.Status(500).JSON(fiber.Map{"error": err.Error()})
		}
		return c.JSON(fiber.Map{"templates": templates})
	})

	// Get template configuration
	api.Get("/config", func(c fiber.Ctx) error {
		config, err := loader.ConfigLoader.LoadTemplateConfig()
		if err != nil {
			return c.Status(500).JSON(fiber.Map{"error": err.Error()})
		}
		return c.JSON(config)
	})

	// Get version history
	api.Get("/versions/:template", func(c fiber.Ctx) error {
		templateName := c.Params("template")
		history, err := loader.VersionManager.GetVersionHistory(templateName)
		if err != nil {
			return c.Status(404).JSON(fiber.Map{"error": err.Error()})
		}
		return c.JSON(history)
	})

	// Create new version
	api.Post("/versions/:template", func(c fiber.Ctx) error {
		templateName := c.Params("template")
		var request struct {
			Description string `json:"description"`
			Author      string `json:"author"`
		}
		if err := c.Bind().JSON(&request); err != nil {
			return c.Status(400).JSON(fiber.Map{"error": err.Error()})
		}

		templatePath := fmt.Sprintf("./web/templates/custom/%s.html", templateName)
		if err := loader.VersionManager.SaveVersion(templateName, templatePath, request.Description, request.Author); err != nil {
			return c.Status(500).JSON(fiber.Map{"error": err.Error()})
		}

		return c.JSON(fiber.Map{"message": "Version saved successfully"})
	})

	// Rollback to version
	api.Post("/versions/:template/rollback/:version", func(c fiber.Ctx) error {
		templateName := c.Params("template")
		version := c.Params("version")

		if err := loader.VersionManager.Rollback(templateName, version); err != nil {
			return c.Status(500).JSON(fiber.Map{"error": err.Error()})
		}

		return c.JSON(fiber.Map{"message": "Rollback successful"})
	})

	// Get template stats
	api.Get("/stats", func(c fiber.Ctx) error {
		stats := loader.VersionManager.GetVersionSummary()
		return c.JSON(stats)
	})

	// Hot reload status
	api.Get("/hotreload/status", func(c fiber.Ctx) error {
		if loader.HotReload == nil {
			return c.JSON(fiber.Map{"status": "disabled"})
		}

		stats := loader.HotReload.GetReloadStats()
		return c.JSON(stats)
	})

	// Manual reload
	api.Post("/hotreload/reload", func(c fiber.Ctx) error {
		if loader.HotReload != nil {
			loader.HotReload.ReloadTemplates()
		}
		loader.ClearCache()
		return c.JSON(fiber.Map{"message": "Templates reloaded"})
	})

	// Health check
	api.Get("/health", func(c fiber.Ctx) error {
		health := map[string]interface{}{
			"status":    "healthy",
			"timestamp": time.Now(),
		}

		if loader.VersionManager != nil {
			health["version_manager"] = loader.VersionManager.GetHealth()
		}

		if loader.HotReload != nil {
			health["hot_reload"] = loader.HotReload.GetReloadStats()
		}

		return c.JSON(health)
	})
}