from fastapi import APIRouter, Depends, HTTPException, status
from sqlalchemy.orm import Session
from typing import List

from database import get_db
from models.contact import Contact
from schemas.contact import ContactCreate, ContactUpdate, ContactResponse
from routers.auth import get_current_user, is_admin_user
from models.user import User

router = APIRouter()

# 获取公司的联系信息列表
@router.get("/company/{company_code}", response_model=List[ContactResponse])
async def get_company_contacts(
    company_code: str,
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    # 检查用户权限：admin用户和超级管理员可以访问所有公司，普通用户只能访问自己公司
    if not is_admin_user(current_user) and not current_user.is_superadmin and current_user.company_code != company_code:
        raise HTTPException(
            status_code=status.HTTP_403_FORBIDDEN,
            detail="You don't have permission to access this company's contacts"
        )
    
    contacts = db.query(Contact).filter(Contact.company_code == company_code).all()
    return contacts

# 创建联系信息
@router.post("/company/{company_code}", response_model=ContactResponse)
async def create_contact(
    contact: ContactCreate,
    company_code: str,
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    # 检查用户权限：admin用户和超级管理员可以访问所有公司，普通用户只能访问自己公司
    if not is_admin_user(current_user) and not current_user.is_superadmin and current_user.company_code != company_code:
        raise HTTPException(
            status_code=status.HTTP_403_FORBIDDEN,
            detail="You don't have permission to create contacts for this company"
        )
    
    db_contact = Contact(
        **contact.model_dump(),
        company_code=company_code
    )
    db.add(db_contact)
    db.commit()
    db.refresh(db_contact)
    return db_contact

# 更新联系信息
@router.put("/{contact_id}", response_model=ContactResponse)
async def update_contact(
    contact_id: int,
    contact: ContactUpdate,
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    db_contact = db.query(Contact).filter(Contact.id == contact_id).first()
    if not db_contact:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Contact not found"
        )
    
    # 检查用户权限：admin用户和超级管理员可以访问所有公司，普通用户只能访问自己公司
    if not is_admin_user(current_user) and not current_user.is_superadmin and db_contact.company_code != current_user.company_code:
        raise HTTPException(
            status_code=status.HTTP_403_FORBIDDEN,
            detail="You don't have permission to update this contact"
        )
    
    update_data = contact.model_dump(exclude_unset=True)
    for field, value in update_data.items():
        setattr(db_contact, field, value)
    
    db.commit()
    db.refresh(db_contact)
    return db_contact

# 删除联系信息
@router.delete("/{contact_id}", status_code=status.HTTP_204_NO_CONTENT)
async def delete_contact(
    contact_id: int,
    current_user: User = Depends(get_current_user),
    db: Session = Depends(get_db)
):
    db_contact = db.query(Contact).filter(Contact.id == contact_id).first()
    if not db_contact:
        raise HTTPException(
            status_code=status.HTTP_404_NOT_FOUND,
            detail="Contact not found"
        )
    
    # 检查用户权限：admin用户和超级管理员可以访问所有公司，普通用户只能访问自己公司
    if not is_admin_user(current_user) and not current_user.is_superadmin and db_contact.company_code != current_user.company_code:
        raise HTTPException(
            status_code=status.HTTP_403_FORBIDDEN,
            detail="You don't have permission to delete this contact"
        )
    
    db.delete(db_contact)
    db.commit()
    return None