import os
import platform
import tempfile
import unittest
from pathlib import Path
from unittest.mock import patch

import git

from aider.dump import dump  # noqa: F401
from aider.io import InputOutput
from aider.models import Model
from aider.repo import GitRepo
from aider.utils import GitTemporaryDirectory


class TestRepo(unittest.TestCase):
    def setUp(self):
        self.GPT35 = Model("gpt-3.5-turbo")

    def test_diffs_empty_repo(self):
        with GitTemporaryDirectory():
            repo = git.Repo()

            # Add a change to the index
            fname = Path("foo.txt")
            fname.write_text("index\n")
            repo.git.add(str(fname))

            # Make a change in the working dir
            fname.write_text("workingdir\n")

            git_repo = GitRepo(InputOutput(), None, ".")
            diffs = git_repo.get_diffs()
            self.assertIn("index", diffs)
            self.assertIn("workingdir", diffs)

    def test_diffs_nonempty_repo(self):
        with GitTemporaryDirectory():
            repo = git.Repo()
            fname = Path("foo.txt")
            fname.touch()
            repo.git.add(str(fname))

            fname2 = Path("bar.txt")
            fname2.touch()
            repo.git.add(str(fname2))

            repo.git.commit("-m", "initial")

            fname.write_text("index\n")
            repo.git.add(str(fname))

            fname2.write_text("workingdir\n")

            git_repo = GitRepo(InputOutput(), None, ".")
            diffs = git_repo.get_diffs()
            self.assertIn("index", diffs)
            self.assertIn("workingdir", diffs)

    def test_diffs_detached_head(self):
        with GitTemporaryDirectory():
            repo = git.Repo()
            fname = Path("foo.txt")
            fname.touch()
            repo.git.add(str(fname))
            repo.git.commit("-m", "foo")

            fname2 = Path("bar.txt")
            fname2.touch()
            repo.git.add(str(fname2))
            repo.git.commit("-m", "bar")

            fname3 = Path("baz.txt")
            fname3.touch()
            repo.git.add(str(fname3))
            repo.git.commit("-m", "baz")

            repo.git.checkout("HEAD^")

            fname.write_text("index\n")
            repo.git.add(str(fname))

            fname2.write_text("workingdir\n")

            git_repo = GitRepo(InputOutput(), None, ".")
            diffs = git_repo.get_diffs()
            self.assertIn("index", diffs)
            self.assertIn("workingdir", diffs)

    def test_diffs_between_commits(self):
        with GitTemporaryDirectory():
            repo = git.Repo()
            fname = Path("foo.txt")

            fname.write_text("one\n")
            repo.git.add(str(fname))
            repo.git.commit("-m", "initial")

            fname.write_text("two\n")
            repo.git.add(str(fname))
            repo.git.commit("-m", "second")

            git_repo = GitRepo(InputOutput(), None, ".")
            diffs = git_repo.diff_commits(False, "HEAD~1", "HEAD")
            self.assertIn("two", diffs)

    @patch("aider.repo.simple_send_with_retries")
    def test_get_commit_message(self, mock_send):
        mock_send.return_value = "a good commit message"

        repo = GitRepo(InputOutput(), None, None, models=[self.GPT35])
        # Call the get_commit_message method with dummy diff and context
        result = repo.get_commit_message("dummy diff", "dummy context")

        # Assert that the returned message is the expected one
        self.assertEqual(result, "a good commit message")

    @patch("aider.repo.simple_send_with_retries")
    def test_get_commit_message_strip_quotes(self, mock_send):
        mock_send.return_value = '"a good commit message"'

        repo = GitRepo(InputOutput(), None, None, models=[self.GPT35])
        # Call the get_commit_message method with dummy diff and context
        result = repo.get_commit_message("dummy diff", "dummy context")

        # Assert that the returned message is the expected one
        self.assertEqual(result, "a good commit message")

    @patch("aider.repo.simple_send_with_retries")
    def test_get_commit_message_no_strip_unmatched_quotes(self, mock_send):
        mock_send.return_value = 'a good "commit message"'

        repo = GitRepo(InputOutput(), None, None, models=[self.GPT35])
        # Call the get_commit_message method with dummy diff and context
        result = repo.get_commit_message("dummy diff", "dummy context")

        # Assert that the returned message is the expected one
        self.assertEqual(result, 'a good "commit message"')

    @patch("aider.repo.GitRepo.get_commit_message")
    def test_commit_with_custom_committer_name(self, mock_send):
        mock_send.return_value = '"a good commit message"'

        # Cleanup of the git temp dir explodes on windows
        if platform.system() == "Windows":
            return

        with GitTemporaryDirectory():
            # new repo
            raw_repo = git.Repo()
            raw_repo.config_writer().set_value("user", "name", "Test User").release()

            # add a file and commit it
            fname = Path("file.txt")
            fname.touch()
            raw_repo.git.add(str(fname))
            raw_repo.git.commit("-m", "initial commit")

            io = InputOutput()
            git_repo = GitRepo(io, None, None)

            # commit a change
            fname.write_text("new content")
            git_repo.commit(fnames=[str(fname)], aider_edits=True)

            # check the committer name
            commit = raw_repo.head.commit
            self.assertEqual(commit.author.name, "Test User (aider)")
            self.assertEqual(commit.committer.name, "Test User (aider)")

            # commit a change without aider_edits
            fname.write_text("new content again!")
            git_repo.commit(fnames=[str(fname)], aider_edits=False)

            # check the committer name
            commit = raw_repo.head.commit
            self.assertEqual(commit.author.name, "Test User")
            self.assertEqual(commit.committer.name, "Test User (aider)")

            # check that the original committer name is restored
            original_committer_name = os.environ.get("GIT_COMMITTER_NAME")
            self.assertIsNone(original_committer_name)
            original_author_name = os.environ.get("GIT_AUTHOR_NAME")
            self.assertIsNone(original_author_name)

    def test_get_tracked_files(self):
        # Create a temporary directory
        tempdir = Path(tempfile.mkdtemp())

        # Initialize a git repository in the temporary directory and set user name and email
        repo = git.Repo.init(tempdir)
        repo.config_writer().set_value("user", "name", "Test User").release()
        repo.config_writer().set_value("user", "email", "testuser@example.com").release()

        # Create three empty files and add them to the git repository
        filenames = ["README.md", "subdir/fänny.md", "systemüber/blick.md", 'file"with"quotes.txt']
        created_files = []
        for filename in filenames:
            file_path = tempdir / filename
            try:
                file_path.parent.mkdir(parents=True, exist_ok=True)
                file_path.touch()
                repo.git.add(str(file_path))
                created_files.append(Path(filename))
            except OSError:
                # windows won't allow files with quotes, that's ok
                self.assertIn('"', filename)
                self.assertEqual(os.name, "nt")

        self.assertTrue(len(created_files) >= 3)

        repo.git.commit("-m", "added")

        tracked_files = GitRepo(InputOutput(), [tempdir], None).get_tracked_files()

        # On windows, paths will come back \like\this, so normalize them back to Paths
        tracked_files = [Path(fn) for fn in tracked_files]

        # Assert that coder.get_tracked_files() returns the three filenames
        self.assertEqual(set(tracked_files), set(created_files))

    def test_get_tracked_files_with_new_staged_file(self):
        with GitTemporaryDirectory():
            # new repo
            raw_repo = git.Repo()

            # add it, but no commits at all in the raw_repo yet
            fname = Path("new.txt")
            fname.touch()
            raw_repo.git.add(str(fname))

            git_repo = GitRepo(InputOutput(), None, None)

            # better be there
            fnames = git_repo.get_tracked_files()
            self.assertIn(str(fname), fnames)

            # commit it, better still be there
            raw_repo.git.commit("-m", "new")
            fnames = git_repo.get_tracked_files()
            self.assertIn(str(fname), fnames)

            # new file, added but not committed
            fname2 = Path("new2.txt")
            fname2.touch()
            raw_repo.git.add(str(fname2))

            # both should be there
            fnames = git_repo.get_tracked_files()
            self.assertIn(str(fname), fnames)
            self.assertIn(str(fname2), fnames)

    def test_get_tracked_files_with_aiderignore(self):
        with GitTemporaryDirectory():
            # new repo
            raw_repo = git.Repo()

            # add it, but no commits at all in the raw_repo yet
            fname = Path("new.txt")
            fname.touch()
            raw_repo.git.add(str(fname))

            aiderignore = Path(".aiderignore")
            git_repo = GitRepo(InputOutput(), None, None, str(aiderignore))

            # better be there
            fnames = git_repo.get_tracked_files()
            self.assertIn(str(fname), fnames)

            # commit it, better still be there
            raw_repo.git.commit("-m", "new")
            fnames = git_repo.get_tracked_files()
            self.assertIn(str(fname), fnames)

            # new file, added but not committed
            fname2 = Path("new2.txt")
            fname2.touch()
            raw_repo.git.add(str(fname2))

            # both should be there
            fnames = git_repo.get_tracked_files()
            self.assertIn(str(fname), fnames)
            self.assertIn(str(fname2), fnames)

            aiderignore.write_text("new.txt\n")

            # new.txt should be gone!
            fnames = git_repo.get_tracked_files()
            self.assertNotIn(str(fname), fnames)
            self.assertIn(str(fname2), fnames)

            # This does not work in github actions?!
            # The mtime doesn't change, even if I time.sleep(1)
            # Before doing this write_text()!?
            #
            # aiderignore.write_text("new2.txt\n")
            # new2.txt should be gone!
            # fnames = git_repo.get_tracked_files()
            # self.assertIn(str(fname), fnames)
            # self.assertNotIn(str(fname2), fnames)

    def test_get_tracked_files_from_subdir(self):
        with GitTemporaryDirectory():
            # new repo
            raw_repo = git.Repo()

            # add it, but no commits at all in the raw_repo yet
            fname = Path("subdir/new.txt")
            fname.parent.mkdir()
            fname.touch()
            raw_repo.git.add(str(fname))

            os.chdir(fname.parent)

            git_repo = GitRepo(InputOutput(), None, None)

            # better be there
            fnames = git_repo.get_tracked_files()
            self.assertIn(str(fname), fnames)

            # commit it, better still be there
            raw_repo.git.commit("-m", "new")
            fnames = git_repo.get_tracked_files()
            self.assertIn(str(fname), fnames)

    @patch("aider.repo.simple_send_with_retries")
    def test_noop_commit(self, mock_send):
        mock_send.return_value = '"a good commit message"'

        with GitTemporaryDirectory():
            # new repo
            raw_repo = git.Repo()

            # add it, but no commits at all in the raw_repo yet
            fname = Path("file.txt")
            fname.touch()
            raw_repo.git.add(str(fname))
            raw_repo.git.commit("-m", "new")

            git_repo = GitRepo(InputOutput(), None, None)

            git_repo.commit(fnames=[str(fname)])