package web

import (
	"fmt"
	"net/http"
	"regexp"
	"sort"
	"strings"

	"github.com/labstack/echo/v4"
	"gitnet.fr/deblan/mu-go/internal/api"
	"gitnet.fr/deblan/mu-go/internal/fs"
)

func List(e echo.Context, directory, url string) error {
	files, err := fs.DirectoryFiles(directory, url)

	if err != nil {
		return e.JSON(http.StatusInternalServerError, api.ApiError{Error: fmt.Sprintf("%s", err)})
	}

	name := e.QueryParam("name")
	order := e.QueryParam("order")

	if name != "" {
		name = strings.ToLower(name)
		var newFiles []fs.File

		for _, file := range files {
			isMatchingName, _ := regexp.MatchString(name, strings.ToLower(file.Name))

			if isMatchingName {
				newFiles = append(newFiles, file)
			}
		}

		files = newFiles
	}

	sort.SliceStable(files, func(i, j int) bool {
		if order == "date" {
			return files[i].Date < files[j].Date
		} else if order == "name" {
			return files[i].Name < files[j].Name
		}

		return false
	})

	return e.JSONPretty(http.StatusOK, files, "  ")
}