# backend/app/connectors/knowledge/mock.py — 시드 기반 knowledge sync (phase-13)
from datetime import UTC, datetime

from sqlmodel import Session

from ..base import BaseConnector, NormalizedRecord, RawRecord
from .normalize import normalize_knowledge, upsert_knowledge

_SIM = [
    {
        "id": "sim-k1",
        "type": "highlight",
        "title": "온보딩 리텐션 — 첫 7일이 전부다",
        "src": "Readwise",
        "excerpt": "신규 사용자의 80%는 첫 주에 이탈 여부가 결정된다…",
        "tags": ["온보딩", "리텐션"],
    }
]


class MockKnowledgeConnector(BaseConnector):
    domain = "knowledge"
    entity_type = "knowledge_item"

    def fetch(self, session: Session, *, full: bool = False):
        for p in getattr(self, "_sim_payloads", []):
            yield RawRecord(
                external_id=p["id"],
                payload=p,
                etag=p.get("title", ""),
                external_updated_at=datetime.now(UTC),
            )

    def simulate_new(self) -> "MockKnowledgeConnector":
        self._sim_payloads = _SIM
        return self

    def normalize(self, raw: RawRecord) -> NormalizedRecord:
        return normalize_knowledge(self.account, raw)

    def write(self, session: Session, norm: NormalizedRecord):
        return upsert_knowledge(session, norm)

    def event_for(self, norm, entity_id):
        return "knowledge.ingested"