"""Unit tests for devx.ci.check_workflow_tofu_init."""

from __future__ import annotations

import textwrap
from pathlib import Path

from click.testing import CliRunner

import devx.ci.check_workflow_tofu_init as mod
from devx.ci.check_workflow_tofu_init import _check_workflow, main


def _write_workflow(tmp_path: Path, content: str) -> Path:
    filepath = tmp_path / "test.yml"
    filepath.write_text(textwrap.dedent(content), encoding="utf-8")
    return filepath


class TestCheckWorkflow:
    def test_passes_when_tofu_init_present(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              deploy:
                runs-on: docker
                steps:
                  - run: python3 scripts/create_production_deployment.py --phase tofu-init
                  - run: python3 scripts/preflight_deploy.py --env production
        """,
        )
        assert _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS) == []

    def test_fails_when_tofu_init_missing(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              preflight:
                runs-on: docker
                steps:
                  - run: python3 scripts/preflight_deploy.py --env production
        """,
        )
        errors = _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS)
        assert len(errors) == 1
        assert "preflight" in errors[0]
        assert "tofu-init" in errors[0]

    def test_passes_when_direct_tofu_init(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              deploy:
                runs-on: docker
                steps:
                  - run: tofu init
                  - run: tofu output -json
        """,
        )
        assert _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS) == []

    def test_fails_when_direct_tofu_output_without_init(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              check:
                runs-on: docker
                steps:
                  - run: tofu output -json
        """,
        )
        errors = _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS)
        assert len(errors) == 1
        assert "check" in errors[0]

    def test_passes_when_no_tofu_usage(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              lint:
                runs-on: docker
                steps:
                  - run: make lint
        """,
        )
        assert _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS) == []

    def test_passes_with_staging_deployment_tofu_init(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              deploy:
                runs-on: docker
                steps:
                  - run: python3 scripts/create_staging_deployment.py --phase tofu-init
                  - run: python3 scripts/create_staging_deployment.py --phase deploy
        """,
        )
        assert _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS) == []

    def test_fails_with_tofu_plan_without_init(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              plan:
                runs-on: docker
                steps:
                  - run: tofu plan
        """,
        )
        errors = _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS)
        assert len(errors) == 1
        assert "plan" in errors[0]

    def test_fails_with_tofu_apply_without_init(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              apply:
                runs-on: docker
                steps:
                  - run: tofu apply -auto-approve
        """,
        )
        errors = _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS)
        assert len(errors) == 1
        assert "apply" in errors[0]

    def test_multiple_jobs_one_missing(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              good:
                runs-on: docker
                steps:
                  - run: python3 scripts/create_production_deployment.py --phase tofu-init
                  - run: python3 scripts/preflight_deploy.py --env production
              bad:
                runs-on: docker
                steps:
                  - run: python3 scripts/preflight_deploy.py --env production
        """,
        )
        errors = _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS)
        assert len(errors) == 1
        assert "bad" in errors[0]

    def test_no_steps_passes(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              empty:
                runs-on: docker
        """,
        )
        assert _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS) == []

    def test_destroy_orphans_does_not_require_init(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              cleanup:
                runs-on: docker
                steps:
                  - run: python3 scripts/destroy_orphans.py
        """,
        )
        assert _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS) == []

    def test_invalid_yaml_returns_error(self, tmp_path: Path) -> None:
        filepath = tmp_path / "bad.yml"
        filepath.write_text("jobs: [invalid yaml: {", encoding="utf-8")
        errors = _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS)
        assert len(errors) == 1
        assert "cannot parse YAML" in errors[0]

    def test_tofu_show_requires_init(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              show:
                runs-on: docker
                steps:
                  - run: tofu show -json
        """,
        )
        errors = _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS)
        assert len(errors) == 1
        assert "show" in errors[0]

    def test_custom_state_scripts(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              custom:
                runs-on: docker
                steps:
                  - run: python3 scripts/my_custom_script.py
        """,
        )
        errors = _check_workflow(filepath, {"my_custom_script.py"})
        assert len(errors) == 1
        assert "custom" in errors[0]

    def test_step_with_no_run_skipped(self, tmp_path: Path) -> None:
        """A step with no 'run' key should be skipped (line 80 continue)."""
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              deploy:
                runs-on: docker
                steps:
                  - name: Checkout
                    uses: actions/checkout@v4
                  - run: tofu init
                  - run: tofu output
        """,
        )
        assert _check_workflow(filepath, mod.DEFAULT_TOFU_STATE_SCRIPTS) == []


class TestCli:
    def test_passes_with_specific_workflow(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              deploy:
                runs-on: docker
                steps:
                  - run: tofu init
                  - run: tofu output
        """,
        )
        runner = CliRunner()
        result = runner.invoke(main, ["--workflow", str(filepath)])
        assert result.exit_code == 0
        assert "OK" in result.output

    def test_fails_with_missing_tofu_init(self, tmp_path: Path) -> None:
        filepath = _write_workflow(
            tmp_path,
            """
            name: Test
            on: push
            jobs:
              preflight:
                runs-on: docker
                steps:
                  - run: python3 scripts/preflight_deploy.py --env production
        """,
        )
        runner = CliRunner()
        result = runner.invoke(main, ["--workflow", str(filepath)])
        assert result.exit_code == 1
        assert "FAIL" in result.output
        assert "preflight" in result.output

    def test_checks_all_workflows_by_default(self, tmp_path: Path) -> None:
        workflows_dir = tmp_path / "workflows"
        workflows_dir.mkdir()
        (workflows_dir / "good.yml").write_text(
            textwrap.dedent("""
            name: Good
            on: push
            jobs:
              deploy:
                runs-on: docker
                steps:
                  - run: tofu init
                  - run: tofu output
        """),
            encoding="utf-8",
        )
        (workflows_dir / "bad.yml").write_text(
            textwrap.dedent("""
            name: Bad
            on: push
            jobs:
              check:
                runs-on: docker
                steps:
                  - run: tofu output
        """),
            encoding="utf-8",
        )
        runner = CliRunner()
        result = runner.invoke(main, ["--workflows-dir", str(workflows_dir)])
        assert result.exit_code == 1
        assert "bad.yml" in result.output
        assert "check" in result.output

    def test_all_workflows_pass(self, tmp_path: Path) -> None:
        workflows_dir = tmp_path / "workflows"
        workflows_dir.mkdir()
        (workflows_dir / "ok.yml").write_text(
            textwrap.dedent("""
            name: OK
            on: push
            jobs:
              deploy:
                runs-on: docker
                steps:
                  - run: tofu init
                  - run: tofu plan
        """),
            encoding="utf-8",
        )
        runner = CliRunner()
        result = runner.invoke(main, ["--workflows-dir", str(workflows_dir)])
        assert result.exit_code == 0
        assert "OK" in result.output