"""Recommendation generation and reviewed publication endpoints."""

from typing import Any

from fastapi import APIRouter, Depends, Header, Path

from app.api.dependencies.auth import build_request_context
from app.api.dependencies.rate_limit import enforce_rate_limit
from app.core.contracts import RequestContext
from app.core.product_recommendation_contracts import ProductRecommendationQuery
from app.service.advisor_rollout_service import enforce_advisor_rollout
from app.service.product_recommendation_service import ProductRecommendationService

advisor_router = APIRouter(
    prefix="/api/v1/advisor",
    tags=["advisor-recommendations"],
    dependencies=[Depends(enforce_rate_limit), Depends(enforce_advisor_rollout)],
)
admin_router = APIRouter(
    prefix="/api/v1/admin",
    tags=["platform-admin"],
    dependencies=[Depends(enforce_rate_limit)],
)


@advisor_router.post("/recommendations")
async def generate_recommendation(
    payload: ProductRecommendationQuery,
    context: RequestContext = Depends(build_request_context),  # noqa: B008
    key: str | None = Header(default=None, alias="Idempotency-Key"),
) -> dict[str, object]:
    return await ProductRecommendationService(enforce_profile_governance=True).generate(
        payload, context, key
    )


@advisor_router.get("/recommendations/published")
async def published_recommendations(
    context: RequestContext = Depends(build_request_context),  # noqa: B008
) -> dict[str, object]:
    return await ProductRecommendationService().published(context)


@admin_router.get(
    "/advisor/pending-contents",
    dependencies=[Depends(enforce_advisor_rollout)],
)
async def pending_advisor_contents(
    context: RequestContext = Depends(build_request_context),  # noqa: B008
) -> dict[str, object]:
    """待审核的投顾内容（推荐方案 + 投资方案书）。编号 `A047`。

    补这个入口的原因：审核/发布端点都要求先拿到 `content_id`，而此前**没有**任何
    端点能列出待审内容，管理员拿不到 id ⇒ 审核链路不可达。返回体里的
    `content_type` 用于前端区分两类内容。
    """
    return await ProductRecommendationService().pending_reviews(context)


@admin_router.post(
    "/advisor/recommendations/{content_id}/reviews",
    dependencies=[Depends(enforce_advisor_rollout)],
)
async def review_recommendation(
    payload: dict[str, Any],
    content_id: int = Path(gt=0),
    context: RequestContext = Depends(build_request_context),  # noqa: B008
    key: str | None = Header(default=None, alias="Idempotency-Key"),
) -> dict[str, object]:
    decision = payload.get("decision")
    if decision not in {"approved", "rejected"}:
        from app.core.errors import ValidationAgentError

        raise ValidationAgentError("decision 必须为 approved 或 rejected")
    comment = payload.get("comment", "")
    if not isinstance(comment, str):
        raise ValueError("comment must be a string")
    return await ProductRecommendationService().review(content_id, decision, comment, context, key)


@admin_router.post(
    "/advisor/recommendations/{content_id}/publications",
    dependencies=[Depends(enforce_advisor_rollout)],
)
async def publish_recommendation(
    content_id: int = Path(gt=0),
    context: RequestContext = Depends(build_request_context),  # noqa: B008
    key: str | None = Header(default=None, alias="Idempotency-Key"),
) -> dict[str, object]:
    return await ProductRecommendationService().publish(content_id, context, key)