from fastapi import APIRouter, Depends, Query, HTTPException
from sqlalchemy.orm import Session
from pydantic import BaseModel
from typing import Optional
from datetime import datetime
from app.core.database import get_db
from app.core.auth import get_current_user
from app.models.seek_info import SeekInfo

router = APIRouter(prefix="/api/seek", tags=["寻配号"])

# ============ Schema ============
class SeekInfoCreate(BaseModel):
    title: str
    content: Optional[str] = None
    expect_category: Optional[str] = None
    expect_version: Optional[str] = None
    expect_packaging: Optional[str] = None
    expect_number: Optional[str] = None
    expect_price_min: Optional[float] = None
    expect_price_max: Optional[float] = None

class SeekInfoUpdate(BaseModel):
    title: Optional[str] = None
    content: Optional[str] = None
    expect_category: Optional[str] = None
    expect_version: Optional[str] = None
    expect_packaging: Optional[str] = None
    expect_number: Optional[str] = None
    expect_price_min: Optional[float] = None
    expect_price_max: Optional[float] = None
    status: Optional[str] = None

class SeekInfoResponse(BaseModel):
    id: str
    user_id: str
    title: str
    content: Optional[str]
    expect_category: Optional[str]
    expect_version: Optional[str]
    expect_packaging: Optional[str]
    expect_number: Optional[str]
    expect_price_min: Optional[float]
    expect_price_max: Optional[float]
    status: str
    is_matched: Optional[str]
    matched_user_id: Optional[str]
    matched_contact: Optional[str]
    view_count: int
    contact_count: int
    created_at: Optional[datetime]
    updated_at: Optional[datetime]

    class Config:
        from_attributes = True

# ============ API ============
@router.get("/list", response_model=list[SeekInfoResponse])
def get_seek_list(
    status: str = Query("active"),
    page: int = Query(1, ge=1),
    page_size: int = Query(20, ge=1, le=100),
    current_user: Optional = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """获取寻配号列表"""
    query = db.query(SeekInfo).filter(SeekInfo.status == status)
    
    # 排序
    query = query.order_by(SeekInfo.created_at.desc())
    
    # 分页
    offset = (page - 1) * page_size
    items = query.offset(offset).limit(page_size).all()
    
    return items

@router.get("/stats")
def get_seek_stats(
    current_user = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """获取寻配号统计"""
    total = db.query(SeekInfo).filter(SeekInfo.status == "active").count()
    matched = db.query(SeekInfo).filter(SeekInfo.is_matched == "true").count()
    
    return {
        "total": total,
        "matched": matched,
        "unmatched": total - matched
    }

@router.post("", response_model=SeekInfoResponse)
def create_seek(
    data: SeekInfoCreate,
    current_user = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """创建寻配号"""
    if not current_user:
        raise HTTPException(status_code=401, detail="请先登录")
    
    seek = SeekInfo(
        user_id=current_user.f99_90_id,
        title=data.title,
        content=data.content,
        expect_category=data.expect_category,
        expect_version=data.expect_version,
        expect_packaging=data.expect_packaging,
        expect_number=data.expect_number,
        expect_price_min=data.expect_price_min,
        expect_price_max=data.expect_price_max,
        status="active"
    )
    db.add(seek)
    db.commit()
    db.refresh(seek)
    return seek

@router.get("/{seek_id}", response_model=SeekInfoResponse)
def get_seek(
    seek_id: str,
    current_user = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """获取寻配号详情"""
    seek = db.query(SeekInfo).filter(SeekInfo.id == seek_id).first()
    if not seek:
        raise HTTPException(status_code=404, detail="寻配号不存在")
    
    # 增加浏览数
    seek.view_count += 1
    db.commit()
    
    return seek

@router.put("/{seek_id}", response_model=SeekInfoResponse)
def update_seek(
    seek_id: str,
    data: SeekInfoUpdate,
    current_user = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """更新寻配号"""
    if not current_user:
        raise HTTPException(status_code=401, detail="请先登录")
    
    seek = db.query(SeekInfo).filter(
        SeekInfo.id == seek_id,
        SeekInfo.user_id == current_user.f99_90_id
    ).first()
    
    if not seek:
        raise HTTPException(status_code=404, detail="寻配号不存在")
    
    for key, value in data.model_dump(exclude_unset=True).items():
        setattr(seek, key, value)
    
    db.commit()
    db.refresh(seek)
    return seek

@router.delete("/{seek_id}")
def delete_seek(
    seek_id: str,
    current_user = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    """删除寻配号"""
    if not current_user:
        raise HTTPException(status_code=401, detail="请先登录")
    
    seek = db.query(SeekInfo).filter(
        SeekInfo.id == seek_id,
        SeekInfo.user_id == current_user.f99_90_id
    ).first()
    
    if not seek:
        raise HTTPException(status_code=404, detail="寻配号不存在")
    
    seek.status = "deleted"
    db.commit()
    
    return {"message": "删除成功"}