import asyncio

import httpx
import pytest

from src import gitea_proxy, main


@pytest.mark.anyio
async def test_create_issue_endpoint_derives_self_assignment_and_returns_confirmed_issue(monkeypatch):
    calls = []

    async def user():
        return {"login": "timmy"}

    async def available_repos():
        return [{"full_name": "stackchain/api"}]

    async def create(repository, title, body, assignee):
        calls.append((repository, title, body, assignee))
        return {
            "id": 81,
            "number": 17,
            "title": title,
            "state": "open",
            "repository": repository,
            "labels": [],
            "assignees": [assignee],
            "updated_at": "2026-08-07T03:00:00Z",
            "url": "https://forge.example/stackchain/api/issues/17",
        }

    monkeypatch.setattr(main.gitea_proxy, "current_user", user)
    monkeypatch.setattr(main.gitea_proxy, "repos", available_repos)
    monkeypatch.setattr(main.gitea_proxy, "create_issue", create, raising=False)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.post(
            "/api/v1/repos/stackchain/api/issues",
            json={"title": "  Capture mobile work  ", "body": "  Context  "},
        )

    assert response.status_code == 201
    assert response.headers["cache-control"] == "no-store"
    assert response.json()["number"] == 17
    assert response.json()["assignees"] == ["timmy"]
    assert calls == [("stackchain/api", "Capture mobile work", "Context", "timmy")]


@pytest.mark.anyio
async def test_gitea_create_issue_posts_self_assignment_and_normalizes_confirmation():
    requests = []

    async def handler(request):
        requests.append(request)
        return httpx.Response(201, json={
            "id": 81, "number": 17, "title": "Capture mobile work", "state": "open",
            "updated_at": "2026-08-07T03:00:00Z",
            "html_url": "https://forge.example/stackchain/api/issues/17",
            "assignees": [{"login": "timmy"}],
        })

    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
    try:
        result = await gitea_proxy.create_issue(
            "stackchain/api", "Capture mobile work", "Context", "timmy"
        )
    finally:
        await gitea_proxy.stop_client()

    assert len(requests) == 1
    assert requests[0].method == "POST"
    assert requests[0].url.path == "/api/v1/repos/stackchain/api/issues"
    assert requests[0].content == (
        b'{"title":"Capture mobile work","body":"Context","assignee":"timmy"}'
    )
    assert result["repository"] == "stackchain/api"
    assert result["number"] == 17
    assert result["assignees"] == ["timmy"]


@pytest.mark.anyio
async def test_create_issue_rejects_blank_title_before_upstream(monkeypatch):
    called = False

    async def user():
        nonlocal called
        called = True
        return {"login": "timmy"}

    monkeypatch.setattr(main.gitea_proxy, "current_user", user)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.post(
            "/api/v1/repos/stackchain/api/issues", json={"title": "   ", "body": "Context"}
        )

    assert response.status_code == 422
    assert response.headers["cache-control"] == "no-store"
    assert called is False


@pytest.mark.anyio
async def test_gitea_create_issue_requires_confirmed_self_assignment():
    async def handler(_request):
        return httpx.Response(201, json={
            "id": 81, "number": 17, "title": "Capture mobile work", "state": "open",
            "html_url": "https://forge.example/stackchain/api/issues/17", "assignees": [],
        })

    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
    try:
        with pytest.raises(ValueError, match="self-assignment"):
            await gitea_proxy.create_issue(
                "stackchain/api", "Capture mobile work", "", "timmy"
            )
    finally:
        await gitea_proxy.stop_client()


@pytest.mark.anyio
async def test_issue_detail_endpoint_returns_assigned_issue_with_no_store(monkeypatch):
    async def assigned(repository, number):
        return (repository, number) == ("stackchain/api", 7)

    async def detail(repository, number):
        return {"repository": repository, "number": number, "title": "Fix mobile flow"}

    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned, raising=False)
    monkeypatch.setattr(main.gitea_proxy, "issue_detail", detail)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.get("/api/v1/repos/stackchain/api/issues/7/detail")

    assert response.status_code == 200
    assert response.headers["cache-control"] == "no-store"
    assert response.json() == {
        "repository": "stackchain/api", "number": 7, "title": "Fix mobile flow"
    }


@pytest.mark.anyio
async def test_issue_detail_deadline_is_retryable_sanitized_and_cancels_work(monkeypatch):
    cancelled = asyncio.Event()

    async def assigned(repository, number):
        try:
            await asyncio.Event().wait()
        finally:
            cancelled.set()

    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
    monkeypatch.setattr(main, "ISSUE_ACTION_TIMEOUT_SECONDS", 0.01)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.get("/api/v1/repos/stackchain/api/issues/7/detail")

    assert response.status_code == 503
    assert response.headers["cache-control"] == "no-store"
    assert response.headers["retry-after"] == "1"
    assert response.json() == {"error": "Loading the issue timed out. Please retry."}
    assert cancelled.is_set()


@pytest.mark.anyio
@pytest.mark.parametrize(
    ("method", "path", "json_body"),
    [
        ("GET", "/api/v1/repos/stackchain/api/issues/7/detail", None),
        ("POST", "/api/v1/repos/stackchain/api/issues/7/comments", {"body": "Hello"}),
        ("PATCH", "/api/v1/repos/stackchain/api/issues/7/close", None),
    ],
)
async def test_issue_actions_reject_items_not_assigned_to_service_user(
    monkeypatch, method, path, json_body
):
    async def assigned(repository, number):
        return False

    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.request(method, path, json=json_body)

    assert response.status_code == 404
    assert response.headers["cache-control"] == "no-store"


@pytest.mark.anyio
@pytest.mark.parametrize("body", ["   ", "x" * 10_001])
async def test_issue_comment_rejects_blank_or_oversized_body_before_upstream(
    monkeypatch, body
):
    called = False

    async def assigned(repository, number):
        nonlocal called
        called = True
        return True

    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.post(
            "/api/v1/repos/stackchain/api/issues/7/comments", json={"body": body}
        )

    assert response.status_code == 422
    assert response.headers["cache-control"] == "no-store"
    assert called is False


@pytest.mark.anyio
async def test_issue_comment_endpoint_posts_only_to_assigned_issue(monkeypatch):
    calls = []

    async def assigned(repository, number):
        return True

    async def comment(repository, number, body):
        calls.append((repository, number, body))
        return {"id": 82, "author": "timmy", "body": body}

    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
    monkeypatch.setattr(main.gitea_proxy, "comment_on_issue", comment)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.post(
            "/api/v1/repos/stackchain/api/issues/7/comments",
            json={"body": "  Ready to ship  "},
        )

    assert response.status_code == 201
    assert response.headers["cache-control"] == "no-store"
    assert response.json() == {"id": 82, "author": "timmy", "body": "Ready to ship"}
    assert calls == [("stackchain/api", 7, "Ready to ship")]


@pytest.mark.anyio
async def test_issue_close_endpoint_mutates_assigned_issue_only_after_confirmation(monkeypatch):
    calls = []

    async def assigned(repository, number):
        return True

    async def close(repository, number):
        calls.append((repository, number))
        return {"number": number, "state": "closed", "closed_at": "now"}

    monkeypatch.setattr(main.gitea_proxy, "is_assigned_issue", assigned)
    monkeypatch.setattr(main.gitea_proxy, "close_issue", close)
    transport = httpx.ASGITransport(app=main.app)
    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
        response = await client.patch("/api/v1/repos/stackchain/api/issues/7/close")

    assert response.status_code == 200
    assert response.headers["cache-control"] == "no-store"
    assert response.json()["state"] == "closed"
    assert calls == [("stackchain/api", 7)]


@pytest.mark.anyio
async def test_gitea_close_issue_patches_state_and_confirms_closed_response():
    requests = []

    async def handler(request):
        requests.append(request)
        return httpx.Response(
            200,
            json={"number": 7, "state": "closed", "closed_at": "2026-08-07T10:20:00Z"},
        )

    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
    try:
        result = await gitea_proxy.close_issue("stackchain/api", 7)
    finally:
        await gitea_proxy.stop_client()

    assert len(requests) == 1
    assert requests[0].method == "PATCH"
    assert requests[0].url.path == "/api/v1/repos/stackchain/api/issues/7"
    assert requests[0].content == b'{"state":"closed"}'
    assert result == {"number": 7, "state": "closed", "closed_at": "2026-08-07T10:20:00Z"}


@pytest.mark.anyio
async def test_gitea_issue_comment_posts_body_and_returns_safe_identity():
    requests = []

    async def handler(request):
        requests.append(request)
        return httpx.Response(
            201,
            json={
                "id": 82,
                "body": "Ready to ship",
                "created_at": "2026-08-07T10:10:00Z",
                "html_url": "https://forge.example/stackchain/api/issues/7#issuecomment-82",
                "user": {"login": "timmy"},
            },
        )

    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
    try:
        result = await gitea_proxy.comment_on_issue("stackchain/api", 7, "Ready to ship")
    finally:
        await gitea_proxy.stop_client()

    assert len(requests) == 1
    assert requests[0].method == "POST"
    assert requests[0].url.path == "/api/v1/repos/stackchain/api/issues/7/comments"
    assert requests[0].content == b'{"body":"Ready to ship"}'
    assert result == {
        "id": 82,
        "author": "timmy",
        "body": "Ready to ship",
        "created_at": "2026-08-07T10:10:00Z",
        "url": "https://forge.example/stackchain/api/issues/7#issuecomment-82",
    }


@pytest.mark.anyio
async def test_gitea_issue_detail_returns_normalized_context_and_recent_comments():
    requests = []

    async def handler(request):
        requests.append((request.method, request.url.path, request.url.query.decode()))
        if request.url.path.endswith("/comments"):
            return httpx.Response(
                200,
                json=[
                    {
                        "id": 81,
                        "body": "Latest update",
                        "created_at": "2026-08-07T10:00:00Z",
                        "html_url": "https://forge.example/stackchain/api/issues/7#issuecomment-81",
                        "user": {"login": "sam"},
                    }
                ],
            )
        return httpx.Response(
            200,
            json={
                "number": 7,
                "title": "Fix mobile flow",
                "state": "open",
                "body": "Full issue context",
                "html_url": "https://forge.example/stackchain/api/issues/7",
                "labels": [{"name": "P1"}],
                "assignees": [{"login": "timmy"}],
            },
        )

    gitea_proxy.start_client(transport=httpx.MockTransport(handler))
    try:
        result = await gitea_proxy.issue_detail("stackchain/api", 7)
    finally:
        await gitea_proxy.stop_client()

    assert requests == [
        ("GET", "/api/v1/repos/stackchain/api/issues/7", ""),
        ("GET", "/api/v1/repos/stackchain/api/issues/7/comments", "limit=20&page=1"),
    ]
    assert result == {
        "repository": "stackchain/api",
        "number": 7,
        "title": "Fix mobile flow",
        "state": "open",
        "body": "Full issue context",
        "url": "https://forge.example/stackchain/api/issues/7",
        "labels": ["P1"],
        "assignees": ["timmy"],
        "comments": [
            {
                "id": 81,
                "author": "sam",
                "body": "Latest update",
                "created_at": "2026-08-07T10:00:00Z",
                "url": "https://forge.example/stackchain/api/issues/7#issuecomment-81",
            }
        ],
    }