package web

import (
	"fmt"
	"net/url"
	"sort"

	"github.com/gofiber/fiber/v2"
	"github.com/samber/lo"
	"github.com/spf13/viper"
	"go.fifitido.net/ytdl-web/ytdl"
	"golang.org/x/exp/slog"
)

func Serve() error {
	engine := ViewsEngine()
	app := fiber.New(fiber.Config{Views: engine})

	app.Get("/", func(c *fiber.Ctx) error {
		return c.Render("views/index", fiber.Map{
			"BasePath": viper.GetString("base_path"),
		}, "views/layouts/main")
	})

	app.Get("/download", func(c *fiber.Ctx) error {
		urlBytes, err := url.QueryUnescape(c.Query("url"))
		if err != nil {
			slog.Error("Failed to decode url param", slog.String("error", err.Error()))
			return fiber.ErrBadRequest
		}
		url := string(urlBytes)

		meta, err := ytdl.GetMetadata(url)
		if err != nil {
			slog.Error("Failed to get metadata", slog.String("error", err.Error()))
			return fiber.ErrInternalServerError
		}

		formats := lo.Filter(meta.Formats, func(item ytdl.Format, _ int) bool {
			return item.ACodec != "none" && item.VCodec != "none"
		})

		sort.Slice(formats, func(i, j int) bool {
			return formats[i].Width > formats[j].Width
		})

		return c.Render("views/download", fiber.Map{
			"BasePath": viper.GetString("base_path"), "Url": url, "Meta": meta, "Formats": formats,
		}, "views/layouts/main")
	})

	app.Get("/download/stream", func(c *fiber.Ctx) error {
		return nil
	})

	listenAddr := fmt.Sprintf("%s:%d", viper.GetString("listen"), viper.GetInt("port"))

	return app.Listen(listenAddr)
}