"""数据对接 API"""
import pandas as pd
import io, json, hashlib
from datetime import datetime
from fastapi import APIRouter, Depends, HTTPException, Query, UploadFile, File
from sqlalchemy.orm import Session
from sqlalchemy import func
from typing import Optional
from app.database import get_db
from app.auth_middleware import require_auth, require_role
from app.models import KPIValue, DataSourceConfig, OperationLog

router = APIRouter(prefix="/api/cma/data", tags=["数据对接"],
    dependencies=[Depends(require_role("ceo", "finance", "it"))],
)

@router.post("/import-excel")
async def import_excel(file: UploadFile = File(...), db: Session = Depends(get_db)):
    content = await file.read()
    df = pd.read_excel(io.BytesIO(content))
    
    required = ["kpi_code", "period", "actual_value"]
    if not all(c in df.columns for c in required):
        raise HTTPException(400, f"Excel必须包含列: {required}")
    
    batch = hashlib.md5(str(datetime.now().timestamp()).encode()).hexdigest()[:12]
    count = 0
    for _, row in df.iterrows():
        kpi_code = str(row.get("kpi_code", ""))
        period = str(row.get("period", ""))
        value = row.get("actual_value")
        if not kpi_code or not period or pd.isna(value):
            continue
        
        from app.models import KPIDefinition
        kpi = db.query(KPIDefinition).filter(KPIDefinition.kpi_code == kpi_code).first()
        if not kpi:
            continue
        
        kv = KPIValue(
            kpi_id=kpi.id,
            period=period,
            actual_value=float(value),
            source_type="excel",
            source_batch=batch,
            data_status="pending",
        )
        db.add(kv)
        count += 1
    
    db.commit()
    return {"message": f"导入成功 {count} 条数据", "batch": batch}

@router.get("/sources")
def list_sources(db: Session = Depends(get_db)):
    sources = db.query(DataSourceConfig).all()
    return {"data": [{c.name: getattr(s, c.name) for c in DataSourceConfig.__table__.columns} for s in sources]}

@router.post("/sources")
def create_source(data: dict, db: Session = Depends(get_db)):
    source = DataSourceConfig(
        name=data.get("name", ""),
        source_type=data.get("source_type", "manual"),
        api_endpoint=data.get("api_endpoint"),
        api_key=data.get("api_key"),
        query_sql=data.get("query_sql"),
        sync_type=data.get("sync_type", "manual"),
        status="active",
    )
    db.add(source)
    db.commit()
    db.refresh(source)
    # 操作日志
    db.add(OperationLog(action="create_source", target_type="source", detail=source.name))
    db.commit()
    return {"data": {c.name: getattr(source, c.name) for c in DataSourceConfig.__table__.columns}}

@router.put("/sources/{source_id}")
def update_source(source_id: int, data: dict, db: Session = Depends(get_db)):
    source = db.query(DataSourceConfig).filter(DataSourceConfig.id == source_id).first()
    if not source:
        raise HTTPException(404, "数据源不存在")
    for key in ["name", "source_type", "api_endpoint", "api_key", "query_sql", "sync_type", "status"]:
        if key in data:
            setattr(source, key, data[key])
    db.commit()
    db.refresh(source)
    db.add(OperationLog(action="update_source", target_type="source", detail=source.name))
    db.commit()
    return {"data": {c.name: getattr(source, c.name) for c in DataSourceConfig.__table__.columns}}

@router.delete("/sources/{source_id}")
def delete_source(source_id: int, db: Session = Depends(get_db)):
    source = db.query(DataSourceConfig).filter(DataSourceConfig.id == source_id).first()
    if not source:
        raise HTTPException(404, "数据源不存在")
    db.add(OperationLog(action="delete_source", target_type="source", detail=source.name))
    db.delete(source)
    db.commit()
    return {"message": "删除成功"}