"""Unit tests for devx.ci.create_dependency_pr."""

from pathlib import Path
from unittest.mock import MagicMock, patch

import click
from click.testing import CliRunner

from devx.ci.create_dependency_pr import (
    cli,
    create_vikunja_task,
    find_existing_pr,
    find_pinned_version,
    update_pinned_version,
)


class TestFindPinnedVersion:
    def test_finds_pip_git_pin(self, tmp_path: Path) -> None:
        content = "grm @ git+https://git.example.com/repo.git@v0.5.1"
        path = tmp_path / "pyproject.toml"
        path.write_text(content)
        version = find_pinned_version("grm", str(path))
        assert version == "0.5.1"

    def test_finds_pyproject_pin(self, tmp_path: Path) -> None:
        content = 'grm = "0.5.1"'
        path = tmp_path / "pyproject.toml"
        path.write_text(content)
        version = find_pinned_version("grm", str(path))
        assert version == "0.5.1"

    def test_finds_ansible_var_pin(self, tmp_path: Path) -> None:
        content = 'grm_version: "0.5.1"'
        path = tmp_path / "images.yml"
        path.write_text(content)
        version = find_pinned_version("grm", str(path))
        assert version == "0.5.1"

    def test_finds_image_version_pin(self, tmp_path: Path) -> None:
        content = 'sso_bridge_image_version: "1.2.3"'
        path = tmp_path / "images.yml"
        path.write_text(content)
        version = find_pinned_version("sso_bridge", str(path))
        assert version == "1.2.3"

    def test_returns_none_when_not_found(self, tmp_path: Path) -> None:
        path = tmp_path / "pyproject.toml"
        path.write_text('other = "1.0.0"')
        assert find_pinned_version("grm", str(path)) is None

    def test_returns_none_when_file_missing(self, tmp_path: Path) -> None:
        assert find_pinned_version("grm", str(tmp_path / "nonexistent.toml")) is None


class TestUpdatePinnedVersion:
    def test_updates_pip_git_pin(self, tmp_path: Path) -> None:
        content = "grm @ git+https://git.example.com/repo.git@v0.5.1"
        path = tmp_path / "pyproject.toml"
        path.write_text(content)
        changed = update_pinned_version(str(path), "grm", "0.5.1", "0.5.2")
        assert changed is True
        assert "0.5.2" in path.read_text()
        assert "0.5.1" not in path.read_text()

    def test_updates_pyproject_pin(self, tmp_path: Path) -> None:
        content = 'grm = "0.5.1"'
        path = tmp_path / "pyproject.toml"
        path.write_text(content)
        changed = update_pinned_version(str(path), "grm", "0.5.1", "0.5.2")
        assert changed is True
        assert 'grm = "0.5.2"' in path.read_text()

    def test_no_change_when_version_not_found(self, tmp_path: Path) -> None:
        content = 'other = "1.0.0"'
        path = tmp_path / "pyproject.toml"
        path.write_text(content)
        changed = update_pinned_version(str(path), "grm", "0.5.1", "0.5.2")
        assert changed is False

    def test_no_change_when_file_missing(self, tmp_path: Path) -> None:
        changed = update_pinned_version(str(tmp_path / "nonexistent"), "grm", "0.5.1", "0.5.2")
        assert changed is False


class TestFindExistingPr:
    @patch("devx.tools.create_pr.GiteaClient")
    def test_returns_pr_when_found(self, mock_client_cls: MagicMock) -> None:
        mock_client = mock_client_cls.return_value
        mock_client.list_prs.return_value = [
            {"head": {"ref": "deps/grm-0.5.2"}, "number": 42},
            {"head": {"ref": "other-branch"}, "number": 43},
        ]
        result = find_existing_pr(mock_client, "deps/grm-0.5.2")
        assert result is not None
        assert result["number"] == 42

    @patch("devx.tools.create_pr.GiteaClient")
    def test_returns_none_when_not_found(self, mock_client_cls: MagicMock) -> None:
        mock_client = mock_client_cls.return_value
        mock_client.list_prs.return_value = []
        result = find_existing_pr(mock_client, "deps/grm-0.5.2")
        assert result is None


class TestCli:
    @patch("devx.ci.create_dependency_pr.find_pinned_version")
    @patch("devx.ci.create_dependency_pr.get_ci_token")
    def test_same_version_no_pr(self, mock_token: MagicMock, mock_find: MagicMock) -> None:
        mock_token.return_value = "fake-token"
        mock_find.return_value = "0.5.2"
        runner = CliRunner()
        result = runner.invoke(
            cli,
            [
                "--package",
                "grm",
                "--new-version",
                "0.5.2",
                "--source-repo",
                "oblachno/grm",
            ],
        )
        assert result.exit_code == 0
        assert "no pr needed" in result.output.lower()

    @patch("devx.ci.create_dependency_pr.find_pinned_version")
    @patch("devx.ci.create_dependency_pr.get_ci_token")
    def test_dry_run(self, mock_token: MagicMock, mock_find: MagicMock) -> None:
        mock_token.return_value = "fake-token"
        mock_find.return_value = "0.5.1"
        runner = CliRunner()
        result = runner.invoke(
            cli,
            [
                "--package",
                "grm",
                "--new-version",
                "0.5.2",
                "--source-repo",
                "oblachno/grm",
                "--dry-run",
            ],
        )
        assert result.exit_code == 0
        assert "DRY RUN" in result.output

    @patch("devx.ci.create_dependency_pr.find_pinned_version")
    @patch("devx.ci.create_dependency_pr.get_ci_token")
    def test_version_not_found_fails(self, mock_token: MagicMock, mock_find: MagicMock) -> None:
        mock_token.return_value = "fake-token"
        mock_find.return_value = None
        runner = CliRunner()
        result = runner.invoke(
            cli,
            [
                "--package",
                "nonexistent",
                "--new-version",
                "1.0.0",
                "--source-repo",
                "oblachno/test",
            ],
        )
        assert result.exit_code != 0


class TestCreateVikunjaTask:
    def test_returns_none_when_no_token(self) -> None:
        with patch("devx.ci.create_dependency_pr.get_vikunja_token", side_effect=click.ClickException("no token")):
            result = create_vikunja_task("Test", "desc")
            assert result is None

    def test_returns_identifier_on_success(self) -> None:
        with (
            patch("devx.ci.create_dependency_pr.get_vikunja_token", return_value="fake-token"),
            patch("devx.api_clients.VikunjaClient") as mock_client_cls,
        ):
            mock_client = mock_client_cls.return_value
            mock_client.create_task.return_value = {"identifier": "OBL-INFRA-999"}
            result = create_vikunja_task("Test", "desc")
            assert result == "OBL-INFRA-999"