package router

import (
	"fiber-sessions/app/handlers"
	"fmt"
	"strings"

	"github.com/gofiber/fiber/v2"
	"github.com/gofiber/fiber/v2/middleware/cors"
	"github.com/gofiber/fiber/v2/middleware/logger"
)

const (
	APPHOST     string = "127.0.0.1"
	APPPORT     int    = 8080
	STATIC_PATH string = "./static"
)

func initApp() *fiber.App {
	app := fiber.New(fiber.Config{
		CaseSensitive: true,
		StrictRouting: true,
	})
	return app
}

func initCorsMiddleware(app *fiber.App) {
	allowHeaders := []string{
		"Content-Type",
		"Content-Length",
		"Accept-Encoding",
		"X-CSRF-Token",
		"Authorization",
		"accept",
		"origin",
		"Cache-Control",
		"X-Requested-With",
		"x-timezone",
		"Access-Control-Allow-Origin",
		"Access-Control-Max-Age",
	}

	app.Use(cors.New(cors.Config{
		AllowOrigins: "*",
		AllowHeaders: strings.Join(allowHeaders[:], ", "),
	}))
}

func initLogging(app *fiber.App) {
	app.Use(
		logger.New(), // add Logger middleware
	)
}

func initRouter(app *fiber.App) {
	app.Get("/", handlers.Home)
	app.Get("/about", handlers.About)

	interactiveGroup := app.Group("/interactive")
	{
		interactiveGroup.Get("", handlers.Interactive)
		interactiveGroup.Get("/swap-content", handlers.InteractiveSwapContent)
		interactiveGroup.Get("/filter-cat-breeds", handlers.FilterCatBreeds)
		interactiveGroup.Post("/validate-form", handlers.ValidateForm)
	}

	app.Static("/static", STATIC_PATH)
}

func Serve() {
	serverAddr := fmt.Sprintf("%s:%d", APPHOST, APPPORT)
	fmt.Printf("Starting serving on http://%s\n", serverAddr)

	app := initApp()
	initLogging(app)
	initCorsMiddleware(app)
	initRouter(app)

	app.Listen(serverAddr)
}