import os
from hashlib import md5
from pathlib import Path

from fastapi import HTTPException, UploadFile
from sqlalchemy.orm import Session
from .Models import User, Post, Department, AuthRule, UserFile
from . import Schemas


def get_user_info(db: Session, email: str):
    user = db.query(User).filter_by(email=email).first()
    return user


def get_user_info_by_phone(db: Session, phone: str):
    user = db.query(User).filter_by(phone=phone).first()
    if not user:
        return None
    departments = []
    posts = []
    if user.department:
        department_id_list = [int(department) for department in user.department.split(",")]
        departments = [item.to_dict() for item in
                       db.query(Department).filter(Department.id.in_(department_id_list))]
    if user.post:
        post_id_list = [int(post) for post in user.post.split(",")]
        posts = [item.to_dict() for item in db.query(Post).filter(Post.id.in_(post_id_list))]
    user_data = user.to_dict()
    user_data['department_list'] = departments
    user_data['post_list'] = posts

    return user_data


def get_full_user_info(db: Session, email: str):
    user = db.query(User).filter_by(email=email).first()
    if not user:
        return None
    departments = []
    posts = []
    if user.department:
        department_id_list = [int(department) for department in user.department.split(",")]
        departments = [item.to_dict() for item in
                       db.query(Department).filter(Department.id.in_(department_id_list))]
    if user.post:
        post_id_list = [int(post) for post in user.post.split(",")]
        posts = [item.to_dict() for item in db.query(Post).filter(Post.id.in_(post_id_list))]
    user_data = user.to_dict()
    user_data['department_list'] = departments
    user_data['post_list'] = posts

    return user_data


def create_user(db: Session, email: str):
    user = User(email=email)
    db.add(user)
    db.commit()
    db.refresh(user)
    return user


def marge_auth_data(auth_data_list):
    auth_data = []
    for item in auth_data_list:
        if item:
            auth_data.extend(item.split(','))
    auth_data = list(set(auth_data))
    auth_data.sort()
    auth_data_str = ",".join(auth_data)
    return auth_data_str


def get_user_auth(db: Session, email):
    """
    获取用户权限信息
    """
    user = db.query(User).filter_by(email=email).first()
    user_auth_data_str = user.auth_data
    if not user.auth_data:
        if user.department:
            department_id_list = [int(d_id) for d_id in user.department.split(',')]
            department_auth_data_list = [
                item.auth_data
                for item in db.query(Department).filter(Department.id.in_(department_id_list))]
            user_auth_data_str = marge_auth_data(department_auth_data_list)
    return user_auth_data_str


def file_md5(head_body):
    """
    :param head_body:file head 2048 bytes
    :return: str
    """
    md = md5()
    md.update(head_body)
    return md.hexdigest()


def create_file(db: Session, file: UploadFile, user_id):
    common_type, file_type = file.content_type.split('/')
    if common_type not in {'image', 'application'}:
        raise HTTPException(detail='不允许上传该类型文件', status_code=403)
    content_start = file.file.read(1024)
    file_md = file_md5(content_start)
    save_path = Path(f"static/upload_files/{common_type}")
    file_save_path = save_path / file_md
    file_url = f'/static/upload_files/{common_type}/{file_md}'
    if not os.path.exists(save_path):
        os.makedirs(save_path)
    has_uploaded = db.query(UserFile).filter(UserFile.md == file_md, UserFile.user_id == user_id).first()
    if not os.path.exists(file_save_path):
        with open(file_save_path, 'wb') as f:
            f.write(content_start)
            while True:
                content = file.file.read(10240)
                if content:
                    f.write(content)
                else:
                    break
    if not has_uploaded:
        user_file = UserFile(md=file_md, mime_type=file.content_type, file_name=file.filename, user_id=user_id,
                             common_type=common_type, file_url=file_url)
        db.add(user_file)
        db.commit()
        db.refresh(user_file)
        return user_file
    else:
        return has_uploaded