package firefox

import (
	"fmt"
	"io/fs"
	"io/ioutil"
	"os"
	"path"
	"path/filepath"
	"strings"

	"hack-browser-data/internal/data"
	"hack-browser-data/internal/item"
)

type firefox struct {
	name           string
	storage        string
	profilePath    string
	masterKey      []byte
	items          []item.Item
	itemPaths      map[item.Item]string
	multiItemPaths map[string]map[item.Item]string
}

// New
func New(info *browserInfo, items []item.Item) ([]*firefox, error) {
	f := &firefox{
		browserInfo: info,
		items:       items,
	}
	multiItemPaths, err := getFirefoxItemAbsPath(f.browserInfo.profilePath, f.items)
	if err != nil {
		if strings.Contains(err.Error(), "profile path is not exist") {
			fmt.Println(err)
			return nil, nil
		}
		panic(err)
	}
	var firefoxList []*firefox
	for name, value := range multiItemPaths {
		firefoxList = append(firefoxList, &firefox{
			browserInfo: &browserInfo{
				name:      name,
				masterKey: nil,
			},
			items:     items,
			itemPaths: value,
		})
	}
	return firefoxList, nil
}

func getFirefoxItemAbsPath(profilePath string, items []item.Item) (map[string]map[item.Item]string, error) {
	var multiItemPaths = make(map[string]map[item.Item]string)
	absProfilePath := path.Join(homeDir, filepath.Clean(profilePath))
	// TODO: Handle read file error
	if !isFileExist(absProfilePath) {
		return nil, fmt.Errorf("%s profile path is not exist", absProfilePath)
	}
	err := filepath.Walk(absProfilePath, firefoxWalkFunc(items, multiItemPaths))
	return multiItemPaths, err
}

func (f *firefox) CopyItemFileToLocal() error {
	for item, sourcePath := range f.itemPaths {
		var dstFilename = item.TempName()
		locals, _ := filepath.Glob("*")
		for _, v := range locals {
			if v == dstFilename {
				err := os.Remove(dstFilename)
				// TODO: Should Continue all iteration error
				if err != nil {
					return err
				}
			}
		}

		// TODO: Handle read file name error
		sourceFile, err := ioutil.ReadFile(sourcePath)
		if err != nil {
			fmt.Println(err.Error())
		}
		err = ioutil.WriteFile(dstFilename, sourceFile, 0777)
		if err != nil {
			return err
		}
	}
	return nil
}

func firefoxWalkFunc(items []item.Item, multiItemPaths map[string]map[item.Item]string) filepath.WalkFunc {
	return func(path string, info fs.FileInfo, err error) error {
		for _, v := range items {
			if info.Name() == v.FileName() {
				parentDir := getParentDir(path)
				if _, exist := multiItemPaths[parentDir]; exist {
					multiItemPaths[parentDir][v] = path
				} else {
					multiItemPaths[parentDir] = map[item.Item]string{v: path}
				}
			}
		}
		return err
	}
}

func getParentDir(absPath string) string {
	return filepath.Base(filepath.Dir(absPath))
}

func (f *firefox) GetMasterKey() ([]byte, error) {
	return f.masterKey, nil
}

func (f *firefox) GetName() string {
	return f.name
}

func (f *firefox) GetBrowsingData() []data.BrowsingData {
	var browsingData []data.BrowsingData
	for item := range f.itemPaths {
		d := item.NewBrowsingData()
		if d != nil {
			browsingData = append(browsingData, d)
		}
	}
	return browsingData
}