"""Unit tests for devx.tools.setup_image."""

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

import pytest
from click.testing import CliRunner

from devx.tools.setup_image import (
    _build_pip_extra_index_url,
    _fallback_to_setup_ci,
    _install_in_image,
    cli,
)


class TestBuildPipExtraIndexUrl:
    def test_basic_url(self) -> None:
        url = _build_pip_extra_index_url(
            "git.oblachno.oblachno.fyi",
            "oblachno-oss",
            "emil",
            "tok123",
        )
        assert url == "https://emil:tok123@git.oblachno.oblachno.fyi/api/packages/oblachno-oss/pypi/simple/"

    def test_custom_host_org(self) -> None:
        url = _build_pip_extra_index_url(
            "gitea.example.com",
            "my-org",
            "user",
            "secret",
        )
        assert url == "https://user:secret@gitea.example.com/api/packages/my-org/pypi/simple/"


class TestInstallInImage:
    @patch("devx.tools.setup_image.subprocess.run")
    @patch("devx.tools.setup_image.Path")
    def test_link_and_install_no_token(self, mock_path: MagicMock, mock_run: MagicMock, tmp_path: Path) -> None:
        venv_link = tmp_path / ".venv"
        mock_path.return_value.exists.return_value = False
        mock_path.return_value.is_symlink.return_value = False
        mock_path.return_value.symlink_to = MagicMock()

        with patch.dict(os.environ, {}, clear=True):
            _install_in_image(str(venv_link), "/opt/venv", "", "host", "org")

        mock_path.return_value.symlink_to.assert_called_once_with("/opt/venv")
        mock_run.assert_called_once()
        cmd = mock_run.call_args[0][0]
        assert "--no-cache-dir" in cmd
        assert "--no-deps" in cmd
        assert "-e" in cmd
        assert "." in cmd
        # No extras → spec is "."
        assert ".[]" not in " ".join(cmd)

    @patch("devx.tools.setup_image.subprocess.run")
    @patch("devx.tools.setup_image.Path")
    def test_link_and_install_with_extras(
        self,
        mock_path: MagicMock,
        mock_run: MagicMock,
        tmp_path: Path,
    ) -> None:
        venv_link = tmp_path / ".venv"
        mock_path.return_value.exists.return_value = False
        mock_path.return_value.is_symlink.return_value = False
        mock_path.return_value.symlink_to = MagicMock()

        with patch.dict(os.environ, {}, clear=True):
            _install_in_image(str(venv_link), "/opt/venv", "ci,lint", "host", "org")

        cmd = mock_run.call_args[0][0]
        assert ".[ci,lint]" in cmd

    @patch("devx.tools.setup_image.subprocess.run")
    @patch("devx.tools.setup_image.Path")
    def test_install_with_token_sets_pip_extra_index_url(
        self,
        mock_path: MagicMock,
        mock_run: MagicMock,
        tmp_path: Path,
    ) -> None:
        venv_link = tmp_path / ".venv"
        mock_path.return_value.exists.return_value = False
        mock_path.return_value.is_symlink.return_value = False
        mock_path.return_value.symlink_to = MagicMock()

        with patch.dict(
            os.environ,
            {"CI_GITEA_TOKEN": "tok123", "CI_GITEA_USERNAME": "emil"},
            clear=True,
        ):
            _install_in_image(str(venv_link), "/opt/venv", "lint", "git.host", "org")

        env = mock_run.call_args[1]["env"]
        assert "PIP_EXTRA_INDEX_URL" in env
        assert "emil:tok123@git.host" in env["PIP_EXTRA_INDEX_URL"]

    @patch("devx.tools.setup_image.subprocess.run")
    @patch("devx.tools.setup_image.Path")
    def test_install_with_token_defaults_username(
        self,
        mock_path: MagicMock,
        mock_run: MagicMock,
        tmp_path: Path,
    ) -> None:
        venv_link = tmp_path / ".venv"
        mock_path.return_value.exists.return_value = False
        mock_path.return_value.is_symlink.return_value = False
        mock_path.return_value.symlink_to = MagicMock()

        with patch.dict(os.environ, {"CI_GITEA_TOKEN": "tok123"}, clear=True):
            _install_in_image(str(venv_link), "/opt/venv", "", "host", "org")

        env = mock_run.call_args[1]["env"]
        assert "emil:tok123@host" in env["PIP_EXTRA_INDEX_URL"]

    @patch("devx.tools.setup_image.subprocess.run")
    @patch("devx.tools.setup_image.Path")
    def test_install_removes_existing_link(
        self,
        mock_path: MagicMock,
        mock_run: MagicMock,
        tmp_path: Path,
    ) -> None:
        venv_link = tmp_path / ".venv"
        mock_path.return_value.exists.return_value = True
        mock_path.return_value.is_symlink.return_value = False
        mock_path.return_value.unlink = MagicMock()
        mock_path.return_value.symlink_to = MagicMock()

        with patch.dict(os.environ, {}, clear=True):
            _install_in_image(str(venv_link), "/opt/venv", "", "host", "org")

        mock_path.return_value.unlink.assert_called_once()

    @patch("devx.tools.setup_image.subprocess.run")
    @patch("devx.tools.setup_image.Path")
    def test_install_removes_existing_symlink(
        self,
        mock_path: MagicMock,
        mock_run: MagicMock,
        tmp_path: Path,
    ) -> None:
        venv_link = tmp_path / ".venv"
        mock_path.return_value.exists.return_value = False
        mock_path.return_value.is_symlink.return_value = True
        mock_path.return_value.unlink = MagicMock()
        mock_path.return_value.symlink_to = MagicMock()

        with patch.dict(os.environ, {}, clear=True):
            _install_in_image(str(venv_link), "/opt/venv", "", "host", "org")

        mock_path.return_value.unlink.assert_called_once()

    @patch("devx.tools.setup_image.subprocess.run")
    @patch("devx.tools.setup_image.Path")
    def test_install_failure_raises(self, mock_path: MagicMock, mock_run: MagicMock, tmp_path: Path) -> None:
        venv_link = tmp_path / ".venv"
        mock_path.return_value.exists.return_value = False
        mock_path.return_value.is_symlink.return_value = False
        mock_path.return_value.symlink_to = MagicMock()
        mock_run.side_effect = subprocess.CalledProcessError(1, ["pip"])

        with patch.dict(os.environ, {}, clear=True):
            with pytest.raises(subprocess.CalledProcessError):
                _install_in_image(str(venv_link), "/opt/venv", "", "host", "org")


class TestFallbackToSetupCi:
    @patch("devx.tools.setup_image.subprocess.run")
    def test_fallback_runs_make_setup_ci(self, mock_run: MagicMock) -> None:
        _fallback_to_setup_ci()
        mock_run.assert_called_once_with(["make", "setup-ci"], check=True)

    @patch("devx.tools.setup_image.subprocess.run")
    def test_fallback_failure_raises(self, mock_run: MagicMock) -> None:
        mock_run.side_effect = subprocess.CalledProcessError(1, ["make"])
        with pytest.raises(subprocess.CalledProcessError):
            _fallback_to_setup_ci()


class TestCli:
    @patch("devx.tools.setup_image._fallback_to_setup_ci")
    @patch("devx.tools.setup_image._install_in_image")
    @patch("devx.tools.setup_image.Path")
    def test_cli_with_opt_venv_present(
        self,
        mock_path: MagicMock,
        mock_install: MagicMock,
        mock_fallback: MagicMock,
    ) -> None:
        mock_path.return_value.is_dir.return_value = True
        runner = CliRunner()
        result = runner.invoke(cli, ["--extras", "ci,lint"])
        assert result.exit_code == 0
        mock_install.assert_called_once()

    @patch("devx.tools.setup_image._install_in_image")
    @patch("devx.tools.setup_image._fallback_to_setup_ci")
    @patch("devx.tools.setup_image.Path")
    def test_cli_falls_back_when_no_opt_venv(
        self,
        mock_path: MagicMock,
        mock_fallback: MagicMock,
        mock_install: MagicMock,
    ) -> None:
        mock_path.return_value.is_dir.return_value = False
        runner = CliRunner()
        result = runner.invoke(cli, [])
        assert result.exit_code == 0
        mock_fallback.assert_called_once()

    @patch("devx.tools.setup_image._fallback_to_setup_ci")
    @patch("devx.tools.setup_image._install_in_image")
    @patch("devx.tools.setup_image.Path")
    def test_cli_default_values(
        self,
        mock_path: MagicMock,
        mock_install: MagicMock,
        mock_fallback: MagicMock,
    ) -> None:
        mock_path.return_value.is_dir.return_value = True
        runner = CliRunner()
        result = runner.invoke(cli, [])
        assert result.exit_code == 0
        call_args = mock_install.call_args[0]
        assert call_args[0] == ".venv"
        assert call_args[1] == "/opt/venv"
        assert call_args[2] == ""  # no extras
        assert call_args[3] == "git.oblachno.oblachno.fyi"
        assert call_args[4] == "oblachno-oss"

    @patch("devx.tools.setup_image._fallback_to_setup_ci")
    @patch("devx.tools.setup_image._install_in_image")
    @patch("devx.tools.setup_image.Path")
    def test_cli_custom_venv_and_gitea(
        self,
        mock_path: MagicMock,
        mock_install: MagicMock,
        mock_fallback: MagicMock,
    ) -> None:
        mock_path.return_value.is_dir.return_value = True
        runner = CliRunner()
        result = runner.invoke(
            cli,
            ["--venv", ".custom-venv", "--gitea-host", "gitea.io", "--gitea-org", "myorg"],
        )
        assert result.exit_code == 0
        call_args = mock_install.call_args[0]
        assert call_args[0] == ".custom-venv"
        assert call_args[3] == "gitea.io"
        assert call_args[4] == "myorg"

    @patch("devx.tools.setup_image._fallback_to_setup_ci")
    @patch("devx.tools.setup_image._install_in_image")
    @patch("devx.tools.setup_image.Path")
    def test_cli_with_extras(
        self,
        mock_path: MagicMock,
        mock_install: MagicMock,
        mock_fallback: MagicMock,
    ) -> None:
        mock_path.return_value.is_dir.return_value = True
        runner = CliRunner()
        result = runner.invoke(cli, ["--extras", "lint"])
        assert result.exit_code == 0
        assert mock_install.call_args[0][2] == "lint"