"""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)],
)
#: 客户自助路由：客户看**自己**已发布的投顾交付物。
#: 前缀挂在 `/api/v1/users/me` 下，与 §T 段（交易）同一约定。
#: **故意不挂 `enforce_advisor_rollout`** —— 那是投顾业务的灰度闸门（按
#: `sys_customer_assignment` 归属命中白名单），客户看自己的交付物不该被它拦下。
client_router = APIRouter(
    prefix="/api/v1/users/me",
    tags=["advisor-deliveries"],
    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)


@advisor_router.get("/recommendations/history")
async def recommendation_history(
    context: RequestContext = Depends(build_request_context),  # noqa: B008
) -> dict[str, object]:
    """历史方案留档：本人 + 名下客户的**全部状态**方案与方案书。

    与 `/recommendations/published` 分开的原因：published 只给"已发布、对客户可见"的内容，
    投顾刚生成、还在待审的草案不在其中。历史记录面板要的是"以前生成过什么"，
    所以这里返回全部状态，按生成时间倒序。
    """
    return await ProductRecommendationService().history(context)


# ---- 投顾自助审核/发布（2026-09-14 新增）------------------------------------
#
# 为什么要有这两个**投顾侧**路由：审核/发布原先只在 `/api/v1/admin/advisor/...`
# 下、且服务层还有 `admin=True` 角色闸门 —— 于是投顾生成完草案后**无法自行推进**，
# 草案永远停在 `pending_review`，必须切到管理员账号才能审。业务要求投顾能审自己的方案。
#
# 与 admin 路由的关系：两者调用**同一个服务方法**，管理面复核队列
# （`GET /api/v1/admin/advisor/pending-contents`）仍保持 admin 专属、未放宽。
@advisor_router.post("/recommendations/{content_id}/reviews")
async def advisor_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)


@advisor_router.post("/recommendations/{content_id}/publications")
async def advisor_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)


@advisor_router.delete("/recommendations/{content_id}")
async def advisor_delete_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]:
    """删除推荐方案（历史记录里的「删除」按钮）。

    仅推荐方案可删：投资方案书被 `advisor_investment_goal.goal_book_content_id`
    （`NO ACTION` 外键、`NOT NULL`）引用，硬删会撞外键 —— 方案书走自己的生命周期。
    """
    return await ProductRecommendationService().delete(content_id, context, key)


@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)


# ---- 客户侧：接收投顾交付物 ------------------------------------------------
#
# 「发送给客户」此前**没有落点** —— 投顾发布后只是把 `published_at` 置上，
# 客户端门户没有任何页面/接口能读到它（客户"可见"只体现在数据口径上）。
# 这条路由补上落点：客户登录后看**自己**已发布的推荐方案与方案书。
@client_router.get("/advisor-contents")
async def my_advisor_contents(
    context: RequestContext = Depends(build_request_context),  # noqa: B008
) -> dict[str, object]:
    """我的投顾方案：本人已审核发布的投顾交付物（按发布时间倒序，最多 50 条）。"""
    return await ProductRecommendationService().my_published(context)