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# -*- coding: utf-8 -*-
#********************************************************************************
#Copyright © 2023 Wcq
#File Name: test.py
#Author: Wcq
#Email: wcq-062821@163.com
#Created: 2023-02-25 11:55:57 
#Last Update: 2023-02-25 15:45:19
#         By: Wcq
#Description: A nautilus plugin for comparing files with meld
#********************************************************************************
from gi.repository import Nautilus, GObject
from typing import List
import os

class compare_files_by_meld (GObject.GObject, Nautilus.MenuProvider):
    def __init__(self):
        super().__init__()
        self.left_file = None
        self.right_file = None
        print("Initialized compare_with_meld extension")

    def mark_left_file (self, menu: Nautilus.MenuItem, file: Nautilus.FileInfo,) -> None:
        self.left_file = file.get_uri()

    def compare_with_left_file (self, menu: Nautilus.MenuItem, file: Nautilus.FileInfo,) -> None:
        self.right_file = file.get_uri()
        os.system("meld \"%s\" \"%s\" &"%(self.left_file, self.right_file))

    def compare_files(self, menu: Nautilus.MenuItem, files: List[Nautilus.FileInfo]) -> None:
        compare_files = ""
        for x in files:
            compare_files += "\"%s\" "%x.get_uri()
        os.system("meld %s &"%(compare_files))

    def get_file_items(self, files: List[Nautilus.FileInfo],) -> List[Nautilus.MenuItem]:
        if len(files) < 1:
            return []

        items = []
        if len(files) == 1:
            item = Nautilus.MenuItem(name="select left file to compare", label="select left compare file", tip="select %s as left compare file" % files[0])
            item.connect("activate", self.mark_left_file, files[0])
            items.append(item)
            if self.left_file:
                item = Nautilus.MenuItem(name="compare with left file", label="compare with left file", tip="compare with %s "%self.left_file)
                item.connect("activate", self.compare_with_left_file, files[0])
                items.append(item)

        if len(files) > 1: 
            item = Nautilus.MenuItem(name="compare all selected files", label="compare all selected files", tip="compaer %s and %s ..." % (files[0].get_name(), files[1].get_name()))
            item.connect("activate", self.compare_files, files)
            items.append(item)

        return items

    # Even though we're not using background items, Nautilus will generate
    # a warning if the method isn't present
    def get_background_items(self, current_folder: Nautilus.FileInfo,) -> List[Nautilus.MenuItem]:
        return []

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mkdir /tmp/testing
export TMPDIR=/tmp/testing
nautilus --no-desktop

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mkdir  ~/.meld/