"""memoir_pipeline_progress：合并与读取逻辑（假 Redis 客户端）。"""

import json

import pytest

import app.core.memoir_pipeline_progress as mpp


class _FakeRedis:
    def __init__(self) -> None:
        self.store: dict[str, str] = {}

    def get(self, key: str) -> str | None:
        return self.store.get(key)

    def setex(self, key: str, _ttl: int, value: str) -> None:
        self.store[key] = value


@pytest.fixture
def fake_redis(monkeypatch: pytest.MonkeyPatch) -> _FakeRedis:
    fr = _FakeRedis()
    monkeypatch.setattr(mpp, "_client", fr)
    return fr


def test_merge_pipeline_run_creates_doc(fake_redis: _FakeRedis) -> None:
    mpp.merge_pipeline_run("cid-1", {"phase1": {"step": "memory_ingest"}})
    raw = fake_redis.store.get("memoir_pipeline_run:cid-1")
    assert raw
    doc = json.loads(raw)
    assert doc["memoir_correlation_id"] == "cid-1"
    assert doc["phase1"]["step"] == "memory_ingest"


def test_merge_phase2_merges_by_task_id(fake_redis: _FakeRedis) -> None:
    mpp.merge_pipeline_run(
        "cid-2",
        {
            "phase2": [
                {"chapter_category": "a", "task_id": "t1", "status": "enqueued"},
            ],
        },
    )
    mpp.merge_pipeline_run(
        "cid-2",
        {"phase2": [{"task_id": "t1", "status": "running"}]},
    )
    raw = fake_redis.store["memoir_pipeline_run:cid-2"]
    doc = json.loads(raw)
    assert len(doc["phase2"]) == 1
    assert doc["phase2"][0]["task_id"] == "t1"
    assert doc["phase2"][0]["status"] == "running"
    assert doc["phase2"][0]["chapter_category"] == "a"


def test_merge_fanout_lists_merge_by_id(fake_redis: _FakeRedis) -> None:
    mpp.merge_pipeline_run(
        "cid-3",
        {
            "fanout": {
                "story_images": [
                    {"story_id": "s1", "task_id": "img1", "status": "enqueued"},
                ],
            },
        },
    )
    mpp.merge_pipeline_run(
        "cid-3",
        {
            "fanout": {
                "story_images": [
                    {"story_id": "s1", "status": "success"},
                ],
            },
        },
    )
    doc = json.loads(fake_redis.store["memoir_pipeline_run:cid-3"])
    assert len(doc["fanout"]["story_images"]) == 1
    assert doc["fanout"]["story_images"][0]["task_id"] == "img1"
    assert doc["fanout"]["story_images"][0]["status"] == "success"


def test_init_and_index_resolve(fake_redis: _FakeRedis) -> None:
    mpp.init_pipeline_run_from_phase1("user-a", "cid-4", "p1tid", segment_count=3)
    cid = mpp.resolve_correlation_id_for_phase1_task("p1tid")
    assert cid == "cid-4"
    snap = mpp.get_pipeline_run_for_eval("user-a", phase1_task_id="p1tid")
    assert snap is not None
    assert snap["user_id"] == "user-a"
    assert snap["phase1"]["task_id"] == "p1tid"


def test_get_pipeline_run_for_eval_user_mismatch(fake_redis: _FakeRedis) -> None:
    mpp.init_pipeline_run_from_phase1("user-a", "cid-5", "p1b", segment_count=1)
    assert mpp.get_pipeline_run_for_eval("other", phase1_task_id="p1b") is None