"""Unit tests for AnsibleExecutor."""

import logging
import os
from pathlib import Path
from unittest.mock import MagicMock, mock_open, patch

import pytest

from gitea_runner_manager.exceptions import AnsibleError
from gitea_runner_manager.executor import AnsibleExecutor


def _mock_popen_process(returncode: int = 0) -> MagicMock:
    """Create a mock Popen process that yields no stdout and exits with given code."""
    proc = MagicMock()
    proc.stdout = iter([])
    proc.wait.return_value = returncode
    proc.returncode = returncode
    return proc


class TestAnsibleExecutorRun:
    def test_run_success(self, tmp_path: Path) -> None:
        with patch("gitea_runner_manager.executor.say") as mock_say:
            executor = AnsibleExecutor(log_dir=tmp_path)
            with patch("subprocess.Popen") as mock_popen, patch("builtins.open", mock_open()):
                mock_popen.return_value = _mock_popen_process(returncode=0)
                executor.run(["echo", "hello"], description="Test run")

        messages = [call.args[0] for call in mock_say.call_args_list]
        assert any("Test run" in msg for msg in messages)
        assert any("Done" in msg for msg in messages)

    def test_run_failure(self, tmp_path: Path) -> None:
        with patch("gitea_runner_manager.executor.say") as mock_say:
            executor = AnsibleExecutor(log_dir=tmp_path)
            with patch("subprocess.Popen") as mock_popen, patch("builtins.open", mock_open()):
                mock_popen.return_value = _mock_popen_process(returncode=1)
                with pytest.raises(AnsibleError, match="exit code 1"):
                    executor.run(["false"], description="Test run")

            error_calls = [call for call in mock_say.call_args_list if call.kwargs.get("level") == logging.ERROR]
            assert len(error_calls) == 1
            assert "exit code 1" in error_calls[0].args[0]

    def test_run_default_description(self, tmp_path: Path) -> None:
        with patch("gitea_runner_manager.executor.say") as mock_say:
            executor = AnsibleExecutor(log_dir=tmp_path)
            with patch("subprocess.Popen") as mock_popen, patch("builtins.open", mock_open()):
                mock_popen.return_value = _mock_popen_process(returncode=0)
                executor.run(["echo", "hello"])

        messages = [call.args[0] for call in mock_say.call_args_list]
        assert any("Running Ansible playbook" in msg for msg in messages)

    def test_run_with_stdout_lines(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        proc = MagicMock()
        proc.stdout = iter(["line1\n", "line2\n"])
        proc.wait.return_value = 0
        proc.returncode = 0
        mock_file = mock_open()

        with patch("subprocess.Popen", return_value=proc), patch("builtins.open", mock_file):
            executor.run(["echo", "hello"], description="Test run")
            handle = mock_file()
            handle.write.assert_any_call("line1\n")
            handle.write.assert_any_call("line2\n")

    def test_run_extracts_status(self, tmp_path: Path) -> None:
        log_content = (
            "TASK [gitea-runner : Report runner status]\n"
            "ok: [127.0.0.1] => {\n"
            '    "msg": "Runner \'127.0.0.1\' is installed and running."\n'
            "}\n"
        )
        with patch("gitea_runner_manager.executor.say") as mock_say:
            executor = AnsibleExecutor(log_dir=tmp_path)
            with patch("subprocess.Popen") as mock_popen, patch("builtins.open", mock_open(read_data=log_content)):
                mock_popen.return_value = _mock_popen_process(returncode=0)
                executor.run(["echo", "hello"], description="Test run")

        messages = [call.args[0] for call in mock_say.call_args_list]
        assert any("Runner '127.0.0.1' is installed and running" in msg for msg in messages)


class TestAnsibleExecutorExtractStatus:
    def test_extract_status_found(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor()
        log_content = (
            "TASK [gitea-runner : Report runner status]\n"
            "ok: [127.0.0.1] => {\n"
            '    "msg": "Runner \'127.0.0.1\' is installed and running."\n'
            "}\n"
        )
        log_file = tmp_path / "test.log"
        log_file.write_text(log_content)
        status = executor._extract_status(log_file)
        assert status is not None
        assert "Runner '127.0.0.1' is installed and running" in status

    def test_extract_status_not_found(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor()
        log_file = tmp_path / "test.log"
        log_file.write_text('TASK [other]\nok: [host] => {\n    "msg": "something else"\n}\n')
        status = executor._extract_status(log_file)
        assert status is None

    def test_extract_status_exception(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor()
        log_file = tmp_path / "test.log"
        log_file.write_text("incomplete")
        log_file.chmod(0o000)
        try:
            status = executor._extract_status(log_file)
            assert status is None
        finally:
            log_file.chmod(0o644)


class TestAnsibleExecutorPrepareLog:
    def test_prepare_log(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        log_file = executor._prepare_log(["ansible-playbook", "test.yml"])
        assert log_file.parent == tmp_path
        assert log_file.name.startswith("ansible-")
        content = log_file.read_text()
        assert "=== GRM Ansible Run:" in content
        assert "Command: ansible-playbook test.yml" in content

    def test_prepare_log_creates_directories(self, tmp_path: Path) -> None:
        nested = tmp_path / "a" / "b" / "c"
        executor = AnsibleExecutor(log_dir=nested)
        log_file = executor._prepare_log(["echo"])
        assert nested.exists()
        assert log_file.exists()


class TestAnsibleExecutorTranslation:
    def test_run_translated(self, tmp_path: Path) -> None:
        with (
            patch.dict(os.environ, {"GRM_LANG": "de"}),
            patch("gitea_runner_manager.executor.say") as mock_say,
        ):
            executor = AnsibleExecutor(log_dir=tmp_path)
            with patch("subprocess.Popen") as mock_popen, patch("builtins.open", mock_open()):
                mock_popen.return_value = _mock_popen_process(returncode=0)
                executor.run(["echo", "hello"])  # use default description to test translation

        messages = [call.args[0] for call in mock_say.call_args_list]
        assert any("Ansible-Playbook wird ausgeführt" in msg for msg in messages)
        assert any("Fertig" in msg for msg in messages)

    def test_unsupported_lang_fallback(self, tmp_path: Path) -> None:
        with (
            patch.dict(os.environ, {"GRM_LANG": "xx"}),
            patch("gitea_runner_manager.executor.say") as mock_say,
        ):
            executor = AnsibleExecutor(log_dir=tmp_path)
            with patch("subprocess.Popen") as mock_popen, patch("builtins.open", mock_open()):
                mock_popen.return_value = _mock_popen_process(returncode=0)
                executor.run(["echo", "hello"])

        messages = [call.args[0] for call in mock_say.call_args_list]
        assert any("Running Ansible playbook" in msg for msg in messages)  # English fallback


class TestAnsibleExecutorAdHoc:
    def test_run_ad_hoc_success(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        result_mock = MagicMock()
        result_mock.stdout = "active\n"
        result_mock.returncode = 0
        result_mock.stderr = ""

        with patch("subprocess.run", return_value=result_mock):
            result = executor.run_ad_hoc("10.0.0.1", "ubuntu", "/key", "shell", "systemctl is-active svc")

        assert result == "active"

    def test_run_ad_hoc_without_key(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        result_mock = MagicMock()
        result_mock.stdout = "inactive\n"
        result_mock.returncode = 0
        result_mock.stderr = ""

        with patch("subprocess.run", return_value=result_mock) as mock_run:
            result = executor.run_ad_hoc("10.0.0.1", "ubuntu", None, "shell", "cmd")

        assert result == "inactive"
        cmd = mock_run.call_args.args[0]
        assert "--private-key" not in cmd

    def test_run_ad_hoc_with_become(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        result_mock = MagicMock()
        result_mock.stdout = "ok\n"
        result_mock.returncode = 0
        result_mock.stderr = ""

        with patch("subprocess.run", return_value=result_mock) as mock_run:
            result = executor.run_ad_hoc("10.0.0.1", "ubuntu", None, "shell", "cmd", become=True)

        assert result == "ok"
        cmd = mock_run.call_args.args[0]
        assert "--become" in cmd

    def test_run_ad_hoc_with_ask_become_pass(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        result_mock = MagicMock()
        result_mock.stdout = "ok\n"
        result_mock.returncode = 0
        result_mock.stderr = ""

        with patch("subprocess.run", return_value=result_mock) as mock_run:
            with patch("sys.stdin.isatty", return_value=True):
                result = executor.run_ad_hoc(
                    "10.0.0.1", "ubuntu", None, "shell", "cmd", become=True, ask_become_pass=True
                )

        assert result == "ok"
        cmd = mock_run.call_args.args[0]
        assert "--become" in cmd
        assert "--ask-become-pass" in cmd

    def test_run_ad_hoc_ask_become_pass_no_tty(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        result_mock = MagicMock()
        result_mock.stdout = "ok\n"
        result_mock.returncode = 0
        result_mock.stderr = ""

        with patch("subprocess.run", return_value=result_mock) as mock_run:
            with patch("sys.stdin.isatty", return_value=False):
                result = executor.run_ad_hoc(
                    "10.0.0.1", "ubuntu", None, "shell", "cmd", become=True, ask_become_pass=True
                )

        assert result == "ok"
        cmd = mock_run.call_args.args[0]
        assert "--become" in cmd
        assert "--ask-become-pass" not in cmd

    def test_run_ad_hoc_check_false(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        result_mock = MagicMock()
        result_mock.stdout = "inactive\n"
        result_mock.returncode = 3
        result_mock.stderr = ""

        with patch("subprocess.run", return_value=result_mock):
            result = executor.run_ad_hoc("10.0.0.1", "ubuntu", None, "shell", "systemctl is-active svc", check=False)

        assert result == "inactive"

    def test_run_ad_hoc_failure_raises(self, tmp_path: Path) -> None:
        executor = AnsibleExecutor(log_dir=tmp_path)
        result_mock = MagicMock()
        result_mock.stdout = ""
        result_mock.returncode = 1
        result_mock.stderr = "SSH timeout"

        with patch("subprocess.run", return_value=result_mock):
            with pytest.raises(AnsibleError, match="SSH timeout"):
                executor.run_ad_hoc("10.0.0.1", "ubuntu", None, "shell", "cmd")