"""Unit tests for devx.ci.validate_deploy_ref."""

from __future__ import annotations

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

from click.testing import CliRunner

from devx.ci.validate_deploy_ref import main


class TestValidateDeployRef:
    def test_valid_tag_prints_ref(self, tmp_path: Path) -> None:
        runner = CliRunner()
        with patch("devx.ci.validate_deploy_ref.subprocess.run") as mock_run:
            mock_run.return_value = MagicMock(returncode=0, stdout="abcdef1234567890\n", stderr="")
            result = runner.invoke(main, ["--tag", "v1.0.0"])
        assert result.exit_code == 0
        assert "v1.0.0" in result.output

    def test_invalid_tag_exits_nonzero(self) -> None:
        runner = CliRunner()
        with patch("devx.ci.validate_deploy_ref.subprocess.run") as mock_run:
            mock_run.return_value = MagicMock(returncode=1, stdout="", stderr="error")
            result = runner.invoke(main, ["--tag", "nonexistent"])
        assert result.exit_code == 1
        assert "does not exist" in result.output

    @patch("devx.ci.validate_deploy_ref.subprocess.run")
    def test_no_tag_without_allow_empty_exits_nonzero(self, mock_subproc: MagicMock) -> None:
        runner = CliRunner()
        result = runner.invoke(main, [])
        assert result.exit_code == 1
        assert "No tag specified" in result.output

    @patch("devx.ci.validate_deploy_ref.subprocess.run")
    def test_allow_empty_prints_pr_mode(self, mock_subproc: MagicMock) -> None:
        runner = CliRunner()
        result = runner.invoke(main, ["--allow-empty"])
        assert result.exit_code == 0
        assert "PR mode" in result.output

    def test_github_output_writes_ref(self, tmp_path: Path) -> None:
        runner = CliRunner()
        gh_output = tmp_path / "github_output"
        gh_output.write_text("")
        with patch("devx.ci.validate_deploy_ref.subprocess.run") as mock_run:
            mock_run.return_value = MagicMock(returncode=0, stdout="abcdef12\n", stderr="")
            with runner.isolation(env={"GITHUB_OUTPUT": str(gh_output)}):
                result = runner.invoke(main, ["--tag", "v1.0.0", "--github-output"])
        assert result.exit_code == 0
        content = gh_output.read_text()
        assert "deploy-ref=v1.0.0" in content

    def test_github_output_without_env_var_exits_nonzero(self) -> None:
        runner = CliRunner()
        with patch("devx.ci.validate_deploy_ref.subprocess.run") as mock_run:
            mock_run.return_value = MagicMock(returncode=0, stdout="abcdef12\n", stderr="")
            with runner.isolation(env={"GITHUB_OUTPUT": ""}):
                result = runner.invoke(main, ["--tag", "v1.0.0", "--github-output"])
        assert result.exit_code == 1
        assert "GITHUB_OUTPUT" in result.output

    @patch("devx.ci.validate_deploy_ref.subprocess.run")
    def test_allow_empty_with_github_output(self, mock_subproc: MagicMock, tmp_path: Path) -> None:
        runner = CliRunner()
        gh_output = tmp_path / "github_output"
        gh_output.write_text("")
        with runner.isolation(env={"GITHUB_OUTPUT": str(gh_output)}):
            result = runner.invoke(main, ["--allow-empty", "--github-output"])
        assert result.exit_code == 0
        assert "deploy-ref=" in gh_output.read_text()