"""Tests for preflight.py — workspace startup checks."""

from config import A2AConfig, RuntimeConfig, WorkspaceConfig
from preflight import run_preflight, render_preflight_report, PreflightIssue, PreflightReport


def make_config(**overrides):
    """Build a minimal workspace config for preflight tests."""
    base = WorkspaceConfig(
        name="Test Workspace",
        runtime="langgraph",
        runtime_config=RuntimeConfig(),
        skills=[],
        prompt_files=[],
        a2a=A2AConfig(port=8000),
    )
    for key, value in overrides.items():
        setattr(base, key, value)
    return base


def test_run_preflight_supported_runtime_passes(tmp_path):
    """A supported runtime with present files should pass cleanly."""
    (tmp_path / "system-prompt.md").write_text("Base prompt.")
    (tmp_path / "skills").mkdir()

    config = make_config(
        prompt_files=["system-prompt.md"],
        skills=[],
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True
    assert report.failures == []
    assert report.warnings == []


def test_run_preflight_unsupported_runtime_fails(tmp_path):
    """Unsupported runtimes should fail before startup."""
    (tmp_path / "system-prompt.md").write_text("Base prompt.")

    config = make_config(
        runtime="not-a-runtime",
        prompt_files=["system-prompt.md"],
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is False
    assert any(issue.title == "Runtime" for issue in report.failures)


# ---------- required_env checks ----------


def test_required_env_present_passes(tmp_path, monkeypatch):
    """When all required_env vars are set, preflight passes."""
    monkeypatch.setenv("CLAUDE_CODE_OAUTH_TOKEN", "sk-test")

    config = make_config(
        runtime="claude-code",
        runtime_config=RuntimeConfig(required_env=["CLAUDE_CODE_OAUTH_TOKEN"]),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True
    assert not any(issue.title == "Required env" for issue in report.failures)


def test_required_env_missing_fails(tmp_path, monkeypatch):
    """When a required_env var is missing, preflight fails."""
    monkeypatch.delenv("CLAUDE_CODE_OAUTH_TOKEN", raising=False)

    config = make_config(
        runtime="claude-code",
        runtime_config=RuntimeConfig(required_env=["CLAUDE_CODE_OAUTH_TOKEN"]),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is False
    assert any(
        issue.title == "Required env" and "CLAUDE_CODE_OAUTH_TOKEN" in issue.detail
        for issue in report.failures
    )


def test_required_env_multiple_all_present_passes(tmp_path, monkeypatch):
    """Multiple required_env vars all present should pass."""
    monkeypatch.setenv("API_KEY_A", "key-a")
    monkeypatch.setenv("API_KEY_B", "key-b")

    config = make_config(
        runtime_config=RuntimeConfig(required_env=["API_KEY_A", "API_KEY_B"]),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True


def test_required_env_multiple_one_missing_fails(tmp_path, monkeypatch):
    """If any required_env var is missing, preflight fails with that var named."""
    monkeypatch.setenv("API_KEY_A", "key-a")
    monkeypatch.delenv("API_KEY_B", raising=False)

    config = make_config(
        runtime_config=RuntimeConfig(required_env=["API_KEY_A", "API_KEY_B"]),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is False
    assert any(
        issue.title == "Required env" and "API_KEY_B" in issue.detail
        for issue in report.failures
    )


def test_required_env_empty_list_passes(tmp_path):
    """Empty required_env means no env checks — always passes."""
    config = make_config(
        runtime_config=RuntimeConfig(required_env=[]),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True


# ---------- Legacy auth_token_file backward compat ----------


def test_legacy_auth_token_file_missing_no_env_fails(tmp_path, monkeypatch):
    """Legacy: missing auth_token_file with no env var should fail."""
    monkeypatch.delenv("CLAUDE_CODE_OAUTH_TOKEN", raising=False)

    config = make_config(
        runtime_config=RuntimeConfig(auth_token_file="secrets/token.txt"),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is False
    assert any(issue.title == "Auth token" for issue in report.failures)


def test_legacy_auth_token_file_missing_but_auth_token_env_passes(tmp_path, monkeypatch):
    """Legacy: missing file but auth_token_env set should pass."""
    monkeypatch.setenv("MY_AUTH_TOKEN", "fake-token")

    config = make_config(
        runtime_config=RuntimeConfig(
            auth_token_file="secrets/token.txt",
            auth_token_env="MY_AUTH_TOKEN",
        ),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True


def test_legacy_auth_token_file_missing_but_required_env_passes(tmp_path, monkeypatch):
    """Legacy: missing file but required_env satisfied should pass."""
    monkeypatch.setenv("CLAUDE_CODE_OAUTH_TOKEN", "sk-test")

    config = make_config(
        runtime="claude-code",
        runtime_config=RuntimeConfig(
            auth_token_file=".auth-token",
            required_env=["CLAUDE_CODE_OAUTH_TOKEN"],
        ),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True


def test_legacy_auth_token_file_exists_passes(tmp_path):
    """Legacy: when the file exists, it passes with no auth warnings."""
    (tmp_path / ".auth-token").write_text("sk-from-file")
    (tmp_path / "system-prompt.md").write_text("prompt")

    config = make_config(
        runtime_config=RuntimeConfig(auth_token_file=".auth-token"),
        prompt_files=["system-prompt.md"],
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True
    assert not any(issue.title == "Auth token" for issue in report.warnings)
    assert report.failures == []


# ---------- Other checks ----------


def test_run_preflight_missing_prompts_and_skills_warn(tmp_path):
    """Missing prompt files and skills should warn, not fail."""
    config = make_config(
        prompt_files=["missing-prompt.md"],
        skills=["missing-skill"],
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True
    assert report.failures == []
    assert any(issue.title == "Prompt file" for issue in report.warnings)
    assert any(issue.title == "Skill" for issue in report.warnings)


def test_run_preflight_valid_config_passes(tmp_path):
    """A fully populated config should pass with no issues."""
    (tmp_path / "system-prompt.md").write_text("Base prompt.")
    skill_dir = tmp_path / "skills" / "writing"
    skill_dir.mkdir(parents=True)
    (skill_dir / "SKILL.md").write_text("Write clearly.")

    config = make_config(
        prompt_files=["system-prompt.md"],
        skills=["writing"],
        runtime_config=RuntimeConfig(),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is True
    assert report.failures == []
    assert report.warnings == []


def test_run_preflight_invalid_port_fails(tmp_path):
    """A port value of 0 is out of range and should trigger a failure."""
    config = make_config(
        a2a=A2AConfig(port=0),
    )

    report = run_preflight(config, str(tmp_path))

    assert report.ok is False
    assert any(issue.title == "A2A port" for issue in report.failures)


def test_render_preflight_report_with_failures(capsys):
    """render_preflight_report prints [FAIL] lines with fix hints."""
    report = PreflightReport(
        failures=[
            PreflightIssue(
                severity="fail",
                title="Runtime",
                detail="Unsupported runtime 'bogus'",
                fix="Choose a supported runtime.",
            )
        ],
        warnings=[],
    )

    render_preflight_report(report)

    captured = capsys.readouterr()
    assert "Preflight checks:" in captured.out
    assert "[FAIL] Runtime: Unsupported runtime 'bogus'" in captured.out
    assert "Fix: Choose a supported runtime." in captured.out


def test_render_preflight_report_with_warnings(capsys):
    """render_preflight_report prints [WARN] lines with fix hints."""
    report = PreflightReport(
        failures=[],
        warnings=[
            PreflightIssue(
                severity="warn",
                title="Prompt file",
                detail="Missing prompt file: missing.md",
                fix="Add the file or remove it from prompt_files.",
            )
        ],
    )

    render_preflight_report(report)

    captured = capsys.readouterr()
    assert "Preflight checks:" in captured.out
    assert "[WARN] Prompt file: Missing prompt file: missing.md" in captured.out
    assert "Fix: Add the file or remove it from prompt_files." in captured.out


def test_render_preflight_report_no_output_when_clean(capsys):
    """render_preflight_report prints nothing when there are no issues."""
    report = PreflightReport(failures=[], warnings=[])

    render_preflight_report(report)

    captured = capsys.readouterr()
    assert captured.out == ""