from pathlib import Path

from rdb_discovery.templates import CONTEXT_FILES, write_file_if_missing


def test_write_file_if_missing(tmp_path: Path) -> None:
    assert write_file_if_missing(tmp_path, "context/test.md", "hello") is True
    assert (tmp_path / "context" / "test.md").read_text(encoding="utf-8") == "hello"
    assert write_file_if_missing(tmp_path, "context/test.md", "changed") is False
    assert (tmp_path / "context" / "test.md").read_text(encoding="utf-8") == "hello"


def test_all_context_files_have_content() -> None:
    for path, content in CONTEXT_FILES.items():
        assert content.strip(), f"Empty content for {path}"


def test_init_creates_all_files(tmp_path: Path) -> None:
    for relative_path, content in CONTEXT_FILES.items():
        write_file_if_missing(tmp_path, relative_path, content)

    for relative_path in CONTEXT_FILES:
        assert (tmp_path / relative_path).exists(), f"Missing {relative_path}"


def test_init_skips_existing_files(tmp_path: Path) -> None:
    skipped = []

    for relative_path, content in CONTEXT_FILES.items():
        target = tmp_path / relative_path
        target.parent.mkdir(parents=True, exist_ok=True)
        target.write_text("existing", encoding="utf-8")
        result = write_file_if_missing(tmp_path, relative_path, content)
        if not result:
            skipped.append(relative_path)

    assert skipped == list(CONTEXT_FILES)
    assert (tmp_path / "TASKS.md").read_text(encoding="utf-8") == "existing"


def test_required_context_templates_exist() -> None:
    """Ensure all six required standard context files are defined."""
    required = [
        "context/company-context.md",
        "context/development-context.md",
        "context/infrastructure-context.md",
        "context/agent-guidelines.md",
        "context/project-brief.md",
        "context/architecture.md",
    ]
    for rel_path in required:
        assert rel_path in CONTEXT_FILES, f"Missing template: {rel_path}"


def test_required_templates_have_headings_and_guidance() -> None:
    """Each required context file must contain headings and placeholder guidance."""
    required = [
        "context/company-context.md",
        "context/development-context.md",
        "context/infrastructure-context.md",
        "context/agent-guidelines.md",
        "context/project-brief.md",
        "context/architecture.md",
    ]
    for rel_path in required:
        content = CONTEXT_FILES[rel_path]
        assert "# " in content, f"{rel_path} missing H1 heading"
        assert "## " in content, f"{rel_path} missing H2 headings"