package server

import (
	"errors"
	"fmt"
	"io/fs"
	"net/http"
	"os"
	"path/filepath"

	"git.zervo.org/zervo/fileserver"
	"git.zervo.org/zervo/fileserver/internal/config"
	"git.zervo.org/zervo/fileserver/internal/server/controllers"
	"github.com/kataras/iris/v12"
	"github.com/kataras/iris/v12/view"
)

// Start starts the server.
func Start(cfg *config.ServerConfig) error {
	app := iris.New()

	templates, err := fs.Sub(fileserver.TemplateFS, "templates")
	if err != nil {
		return errors.New("fs.Sub operation on TemplateFS")
	}

	templater := view.HTML(templates, ".html").Layout("layouts/main.html")
	app.RegisterView(templater)

	// Register core routes
	app.Get("/", index)
	app.Get("/favicon.ico", favicon)

	// Register controller routes
	controllers.DirectoriesRoute(app, cfg)

	app.Get("/aaa", func(ctx iris.Context) {
		files, err := os.ReadDir("test")
		if err != nil {
			ctx.StatusCode(http.StatusInternalServerError)
			ctx.WriteString("Could not read directory")
			return
		}

		var filenames []string
		for _, f := range files {
			if !f.IsDir() {
				filenames = append(filenames, f.Name())
			}
		}

		fmt.Printf("Files: %v\n", filenames)

		ctx.ViewData("Files", filenames)
		ctx.View("index.html")
	})

	app.Get("/download/{filename:string}", func(ctx iris.Context) {
		filename := ctx.Params().Get("filename")
		filePath := filepath.Join("test", filename)
		ctx.SendFile(filePath, filename)
	})

	return app.Listen(":" + fmt.Sprint(cfg.WebPort))
}

// index redirects request from '/' to '/directories'.
func index(ctx iris.Context) {
	ctx.Redirect("/directories")
}

// favicon returns favicon data upon request.
func favicon(ctx iris.Context) {
	data, err := fileserver.StaticFS.ReadFile("static/favicon.ico")
	if err != nil {
		ctx.StatusCode(http.StatusNotFound)
		return
	}
	ctx.ContentType("image/x-icon")
	ctx.Write(data)
}