import json
from pathlib import Path

from fastapi.testclient import TestClient

from repo_scoping.web_api.app import Settings, app, get_settings


def override_settings(tmp_path):
    def _override():
        return Settings(
            database_path=str(tmp_path / "scope-context.sqlite3"),
            checkout_root=str(tmp_path / "checkouts"),
            state_hub_base_url="",
        )

    return _override


def test_scope_context_endpoint_returns_activity_core_contract(tmp_path):
    scoped_source = tmp_path / "scoped-repo"
    scoped_source.mkdir()
    (scoped_source / "SCOPE.md").write_text(
        "# SCOPE\n\n"
        "> Generated context note.\n\n"
        "---\n\n"
        "## One-liner\n\n"
        "Maps repositories into concise operating context.\n\n"
        "## Notes\n\n"
        "Further details stay out of the summary.\n",
        encoding="utf-8",
    )

    plain_source = tmp_path / "plain-repo"
    plain_source.mkdir()

    app.dependency_overrides[get_settings] = override_settings(tmp_path)
    client = TestClient(app)
    try:
        scoped = client.post(
            "/repos",
            json={
                "name": "Scoped Repo",
                "url": str(scoped_source),
                "description": "Registry fallback for scoped repo.",
            },
        ).json()
        ability_id = client.post(
            f"/repos/{scoped['id']}/abilities",
            json={
                "name": "Context Publishing",
                "description": "Expose repository context to callers.",
            },
        ).json()["id"]
        client.post(
            f"/repos/{scoped['id']}/capabilities",
            json={
                "ability_id": ability_id,
                "name": "Generate SCOPE.md",
                "description": "Render repository scope from approved entries.",
            },
        )

        client.post(
            "/repos",
            json={
                "name": "Plain Repo",
                "url": str(plain_source),
                "description": "Plain repository metadata summary.",
            },
        )
        client.post(
            "/repos",
            json={
                "name": "Remote Repo",
                "url": "https://example.test/remote-repo.git",
                "description": "Remote repository metadata summary.",
            },
        )

        scoped_context = client.get("/repos/scoped-repo/scope/context")
        assert scoped_context.status_code == 200
        assert scoped_context.json() == {
            "repo_slug": "scoped-repo",
            "capabilities": ["Generate SCOPE.md"],
            "tags": ["ability", "capability"],
            "scope_md_exists": True,
            "scope_summary": "Maps repositories into concise operating context.",
        }

        plain_context = client.get("/repos/plain-repo/scope/context")
        assert plain_context.status_code == 200
        assert plain_context.json() == {
            "repo_slug": "plain-repo",
            "capabilities": [],
            "tags": [],
            "scope_md_exists": False,
            "scope_summary": "Plain repository metadata summary.",
        }

        remote_context = client.get("/repos/remote-repo/scope/context")
        assert remote_context.status_code == 200
        assert remote_context.json() == {
            "repo_slug": "remote-repo",
            "capabilities": [],
            "tags": [],
            "scope_md_exists": False,
            "scope_summary": "Remote repository metadata summary.",
        }

        missing_context = client.get("/repos/missing-repo/scope/context")
        assert missing_context.status_code == 404
        assert missing_context.json()["detail"]

        markdown_scope = client.get("/repos/scoped-repo/scope")
        assert markdown_scope.status_code == 200
        assert markdown_scope.headers["content-type"].startswith("text/markdown")
        assert "# SCOPE" in markdown_scope.text
    finally:
        app.dependency_overrides.clear()


def test_scope_context_schema_artifact_matches_contract_shape():
    schema = json.loads(
        (
            Path(__file__).parents[1]
            / "docs"
            / "schemas"
            / "repo-scope-context-response.json"
        ).read_text(encoding="utf-8")
    )

    assert schema["additionalProperties"] is False
    assert schema["required"] == [
        "repo_slug",
        "capabilities",
        "tags",
        "scope_md_exists",
        "scope_summary",
    ]
    assert schema["properties"]["scope_md_exists"]["type"] == "boolean"
    assert schema["properties"]["scope_summary"]["type"] == ["string", "null"]


def test_scope_context_openapi_contract_is_exposed(tmp_path):
    app.dependency_overrides[get_settings] = override_settings(tmp_path)
    client = TestClient(app)
    try:
        schema = client.get("/openapi.json").json()
    finally:
        app.dependency_overrides.clear()

    operation = schema["paths"]["/repos/{repo_slug}/scope/context"]["get"]
    assert operation["tags"] == ["scope"]
    response_schema = operation["responses"]["200"]["content"]["application/json"][
        "schema"
    ]
    assert response_schema["$ref"].endswith("/RepositoryScopeContextResponse")
    assert (
        "RepositoryScopeContextResponse"
        in schema["components"]["schemas"]
    )