/*
Copyright © 2024 Brian Buller <brian@bullercodeworks.com>
*/
package util

import (
	"bytes"
	"encoding/base64"
	"errors"
	"fmt"
	"io"
	"net/http"
	"strings"

	"github.com/spf13/viper"
)

func GetAuth() (string, error) {
	username := viper.GetString("ncuser")
	password, err := Decrypt(viper.GetString("ncpw"))
	if err != nil {
		return "", err
	}
	auth := username + ":" + password
	return base64.StdEncoding.EncodeToString([]byte(auth)), nil
}

func NormalizeLocalPath(path string) string {
	root := viper.GetString("directory")
	return strings.TrimPrefix(path, root)
}

func GetFilesUrl(path string) string {
	return fmt.Sprintf("%sremote.php/dav/files/%s/%s", viper.GetString("ncurl"), viper.GetString("ncuser"), path)
}

func GetFileId(url string) (string, error) {
	var auth string
	client := &http.Client{}
	data := bytes.NewBuffer([]byte(`<?xml version="1.0" encoding="UTF-8"?>
    <d:propfind xmlns:d="DAV:">
      <d:prop xmlns:oc="http://owncloud.org/ns">
        <oc:fileid/>
      </d:prop>
    </d:propfind>`))
	req, err := http.NewRequest("PROPFIND", url, data)
	if err != nil {
		return "", err
	}
	auth, err = GetAuth()
	if err != nil {
		return "", err
	}
	req.Header.Add("Authorization", "Basic "+auth)
	resp, err := client.Do(req)
	if err != nil {
		return "", err
	}
	defer resp.Body.Close()
	var body []byte
	body, err = io.ReadAll(resp.Body)
	wrkArr := strings.Split(string(body), "<oc:fileid>")
	if len(wrkArr) != 2 {
		return "", errors.New("Couldn't find File ID")
	}
	wrkArr = strings.Split(wrkArr[1], "</oc:fileid>")
	if len(wrkArr) != 2 {
		return "", errors.New("Couldn't find File ID")
	}
	return wrkArr[0], nil
}