package bookmarks

import "os"
import "fmt"
import "bufio"
import "strings"
import "net/url"
import "path/filepath"
import "git.tebibyte.media/sashakoshka/stone/config"

var bookmarksFile string
var dataDirectory string

type Bookmark struct {
	Title    string
	Location *url.URL
}

var bookmarks []Bookmark

func Gemtext () (page string) {
	page += "# Bookmarks\n\n"
	for _, bookmark := range bookmarks {
		page +=
			"=> " + bookmark.Location.String() +
			" " + bookmark.Title + "\n"
	}
	
	return
}

func New (title, location string) (bookmark Bookmark) {
	bookmark.Title = title
	bookmark.Location, _ = url.Parse(location)
	bookmark.Location.RawQuery = url.PathEscape(bookmark.Location.RawQuery)
	return
}

func Add (bookmark Bookmark) {
	bookmarks = append(bookmarks, bookmark)
	save()
}

func init () {
	dataDirectory = config.DataHome("skipper")
	bookmarksFile = filepath.Join(dataDirectory, "bookmarks")
	load()
}

func load () {
	defer func () {
		if len(bookmarks) > 0 { return }
		bookmarks = []Bookmark {
			New("Project Gemini", "gemini://gemini.circumlunar.space:1965/"),
			New("Search", "gemini://geminispace.info:1965/search/"),
		}
	} ()

	file, err := os.Open(bookmarksFile)
	if err != nil { return }

	scanner := bufio.NewScanner(file)
	for scanner.Scan() {
		line := strings.TrimSpace(scanner.Text())
		
		if len(line) == 0 {
			continue
		}

		if line[0] == '#' {
			continue
		}
	
		title, location, found := strings.Cut(scanner.Text(), ":")
		if !found { continue }
		
		title    = strings.TrimSpace(title)
		location = strings.TrimSpace(location)
		bookmarks = append(bookmarks, New(title, location))
	}
}

func save () (err error) {
	err = os.MkdirAll(dataDirectory, 0755)
	if err != nil { return }
	
	file, err := os.OpenFile (
		bookmarksFile,
		os.O_WRONLY | os.O_CREATE | os.O_TRUNC, 0744)
	if err != nil { return }
	defer file.Close()

	for _, bookmark := range bookmarks {
		fmt.Fprintf (
			file, "%s: %s\n",
			bookmark.Title,
			bookmark.Location.String())
	}

	return
}