"""admin 首页轮播种子管理:列出 / 新增 / 改 / 删 / 批量生成 / 预览(带审计)。

种子用于首页轮播「真实+种子混播」的兜底(见 app/repositories/ops_marquee.py)。
权限:operator 可改,super 恒可;预览为只读(任意已登录 admin)。
"""
from __future__ import annotations

from typing import Annotated

from fastapi import APIRouter, Depends, HTTPException, Query, Request

from app.admin.audit import write_audit
from app.admin.deps import AdminDb, get_client_ip, get_current_admin, require_role
from app.admin.schemas.ops_marquee_seed import (
    OpsMarqueeSeedBulkCreate,
    OpsMarqueeSeedCreate,
    OpsMarqueeSeedOut,
    OpsMarqueeSeedUpdate,
    OpsSavingsFeedPreviewOut,
)
from app.models.admin import AdminUser
from app.models.ops_marquee_seed import OpsMarqueeSeed
from app.repositories import ops_marquee

router = APIRouter(
    prefix="/admin/api/marquee-seeds",
    tags=["admin-marquee-seeds"],
    dependencies=[Depends(get_current_admin)],
)


def _out(seed: OpsMarqueeSeed) -> OpsMarqueeSeedOut:
    return OpsMarqueeSeedOut(
        id=seed.id,
        masked_user=seed.masked_user,
        min_cents=seed.min_cents,
        max_cents=seed.max_cents,
        enabled=seed.enabled,
        sort_order=seed.sort_order,
        created_at=seed.created_at.isoformat() if seed.created_at else None,
    )


@router.get("", response_model=list[OpsMarqueeSeedOut], summary="轮播种子列表")
def list_seeds(db: AdminDb) -> list[OpsMarqueeSeedOut]:
    return [_out(s) for s in ops_marquee.list_seeds(db)]


@router.get("/preview", response_model=OpsSavingsFeedPreviewOut, summary="预览实际混播 feed")
def preview_feed(
    db: AdminDb,
    limit: Annotated[int, Query(ge=1, le=30)] = 8,
) -> OpsSavingsFeedPreviewOut:
    """返回客户端实际会看到的 feed(真实记录会插队、种子随机抽取/金额随机/名字合成),供运营对效果。"""
    return OpsSavingsFeedPreviewOut(items=ops_marquee.get_feed(db, limit=limit))


@router.post("", response_model=OpsMarqueeSeedOut, summary="新增轮播种子(带审计)")
def create_seed(
    body: OpsMarqueeSeedCreate,
    request: Request,
    admin: Annotated[AdminUser, Depends(require_role("operator"))],
    db: AdminDb,
) -> OpsMarqueeSeedOut:
    try:
        seed = ops_marquee.create_seed(
            db,
            masked_user=body.masked_user,
            min_cents=body.min_cents,
            max_cents=body.max_cents,
            enabled=body.enabled,
            sort_order=body.sort_order,
            commit=False,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e)) from e
    write_audit(
        db, admin, action="ops_marquee_seed.create", target_type="ops_marquee_seed",
        target_id=None, detail=body.model_dump(), ip=get_client_ip(request), commit=False,
    )
    db.commit()
    db.refresh(seed)
    return _out(seed)


@router.post("/bulk", response_model=list[OpsMarqueeSeedOut], summary="批量生成种子(带审计)")
def bulk_generate(
    body: OpsMarqueeSeedBulkCreate,
    request: Request,
    admin: Annotated[AdminUser, Depends(require_role("operator"))],
    db: AdminDb,
) -> list[OpsMarqueeSeedOut]:
    try:
        seeds = ops_marquee.bulk_generate(
            db,
            count=body.count,
            min_cents=body.min_cents,
            max_cents=body.max_cents,
            enabled=body.enabled,
            commit=False,
        )
    except ValueError as e:
        raise HTTPException(status_code=400, detail=str(e)) from e
    write_audit(
        db, admin, action="ops_marquee_seed.bulk_generate", target_type="ops_marquee_seed",
        target_id=None, detail=body.model_dump(), ip=get_client_ip(request), commit=False,
    )
    db.commit()
    for s in seeds:
        db.refresh(s)
    return [_out(s) for s in seeds]


@router.patch("/{seed_id}", response_model=OpsMarqueeSeedOut, summary="改轮播种子(带审计)")
def update_seed(
    seed_id: int,
    body: OpsMarqueeSeedUpdate,
    request: Request,
    admin: Annotated[AdminUser, Depends(require_role("operator"))],
    db: AdminDb,
) -> OpsMarqueeSeedOut:
    try:
        seed = ops_marquee.update_seed(
            db,
            seed_id,
            masked_user=body.masked_user,
            min_cents=body.min_cents,
            max_cents=body.max_cents,
            enabled=body.enabled,
            sort_order=body.sort_order,
            commit=False,
        )
    except ValueError as e:
        raise HTTPException(status_code=404 if "不存在" in str(e) else 400, detail=str(e)) from e
    write_audit(
        db, admin, action="ops_marquee_seed.update", target_type="ops_marquee_seed",
        target_id=seed_id, detail=body.model_dump(exclude_none=True),
        ip=get_client_ip(request), commit=False,
    )
    db.commit()
    db.refresh(seed)
    return _out(seed)


@router.delete("/{seed_id}", summary="删轮播种子(带审计)")
def delete_seed(
    seed_id: int,
    request: Request,
    admin: Annotated[AdminUser, Depends(require_role("operator"))],
    db: AdminDb,
) -> dict:
    ok = ops_marquee.delete_seed(db, seed_id, commit=False)
    if not ok:
        raise HTTPException(status_code=404, detail="种子不存在")
    write_audit(
        db, admin, action="ops_marquee_seed.delete", target_type="ops_marquee_seed",
        target_id=seed_id, detail=None, ip=get_client_ip(request), commit=False,
    )
    db.commit()
    return {"deleted": True}