python-fastapi-mm-zhcs-yj-api/routers/api/yst/file.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from fastapi import APIRouter, Request, Depends, Body, File, UploadFile
from fastapi.responses import FileResponse
from starlette.responses import StreamingResponse
from sqlalchemy.orm import Session
from database import get_db
import requests
import json
import os
import base64
import uuid
import time
from config import settings
from pprint import pprint
from exceptions import *
from utils import *
from extensions import logger
import os
from models import *
from utils import *
from utils.sg_auth import *
from utils.StripTagsHTMLParser import *
from PIL import Image
from io import BytesIO

router = APIRouter()

FILE_ALIAS_MAP = {
    'yyzz': '隐患点图片',
    'yjya': '预案附件',
    'ylzj': '演练总结',
}

@router.post('/upload')
async def upload(
    *, 
    request: Request,
    uuid: str = Body(...),
    fileType: str = Body(...),
    file: UploadFile = File(...),
    ext_info: str = Depends(yst_pass_ext),
    db: Session = Depends(get_db)
):
    sfzh = ext_info['cid']
    timestamp = int(time.time())
    file_name = file.filename
    logger.debug("fileupload {}", file_name)

    # 文件后续名校验
    suffix = os.path.splitext(file_name)[-1]
    if suffix.find('.') != -1:
        if suffix.lower() not in ['.jpg', '.jpeg', '.png', '.pdf']:
            return {
                'fileName': '',
                'basePath': ''
            }
    else:
        suffix = '.png'

    file_name = get_filename(suffix)
    file_dir = os.path.join('/data/upload/mergefile/uploads/', "{}/{}/{}".format("yst", uuid, fileType))
    os.makedirs(file_dir, mode=0o764, exist_ok=True)

    file_path = os.path.abspath("{}/{}".format(file_dir, file_name))
    if os.path.exists(file_path):
        os.remove(file_path)
    
    content = await file.read()
    with open(file_path, 'wb') as f:
        f.write(content)

    logger.debug("fileupload {}", file_path)

    file_desc = ''
    if fileType in FILE_ALIAS_MAP.keys():
        file_desc = FILE_ALIAS_MAP[fileType]
    db_entity = YssYstUploadFileEntity(uuid=uuid, sfzh=sfzh, file_name=file_name, save_filepath=file_path, file_type=fileType, file_desc=file_desc, created_time=timestamp)
    db.add(db_entity)
    db.commit()

    path = "{}/{}/{}".format(uuid, fileType, file_name)

    resp = {
        'fileName': file_name,
        'basePath': path
    }
    return yst_image_response(resp)

def get_filename(suffix):
    return str(uuid.uuid1()) + suffix.lower()

@router.post('/delete')
def delete(
    *,
    request: Request,
    param: dict = Depends(yst_request_param),
    db: Session = Depends(get_db)
):
    path = get_req_param(param, 'path')
    file_path = os.path.abspath(os.path.join('/data/upload/mergefile/uploads/', "yst", path))
    if os.path.exists(file_path):
        print("delete file:", file_path)
        os.remove(file_path)
    
    db.query(YssYstUploadFileEntity).filter(YssYstUploadFileEntity.save_filepath == file_path).delete()
    db.commit()
    
    return yst_response({'ret':0})


@router.post('/show')
def show(
    *,
    request: Request,
    param: dict = Depends(yst_request_param),
    db: Session = Depends(get_db)
):
    uuid = get_req_param(param, 'uuid')

    valueList = []
    dir = os.path.join('/data/upload/mergefile/uploads/', "{}/{}".format("yst", uuid))
    print('upload dir', dir)
    if os.path.exists(dir):
        for file_type in os.listdir(dir):
            file_type_path = os.path.join(dir, file_type)
            if os.path.exists(file_type_path) and os.path.isdir(file_type_path):
                file_list = []
                for file_name in os.listdir(file_type_path):
                    file_list.append("/mmh5_yjxm_yst/ebus/yst_mmsyjjzhyjxt/api/yst/file/show?thumb=1&file_name={}&rnd={}".format(file_name, new_guid()))    
                valueMap = {
                    'fileType': file_type,
                    'imageUrls': file_list
                }
                valueList.append(valueMap)

    sfz_list = []
    qtFile = []
    for n in valueList:
        file_type = n['fileType']
        if file_type in ['sfz_zm', 'sfz_bm']:
            sfz_list = sfz_list + n['imageUrls']
        else:
            qtFile.append({'fileName': FILE_ALIAS_MAP[file_type], 'imageUrls': n['imageUrls']})

    sfzFile = []
    if len(sfz_list) > 0:
        sfzFile = [{'fileName': '居民身份证', 'imageUrls': sfz_list}]
    return yst_response({
        'sfzFile': sfzFile, 
        'qtFile': qtFile
    })

@router.get('/show', response_class=FileResponse, summary="显示图片")
async def show(
    *, 
    request: Request,
    file_name: str,
    thumb: str = '',
    db: Session = Depends(get_db)
):
    row = db.query(YssYstUploadFileEntity).filter(YssYstUploadFileEntity.file_name == file_name).first()
    if row is not None:
        image_filepath = row.save_filepath
        print(image_filepath)
        if os.path.exists(image_filepath) == False:
            image_filepath = os.path.join(settings.UPLOAD_IMAGE_PATH, "blank.png")
            return FileResponse(image_filepath)
        
        print('file show ==========>', row.file_type, image_filepath)
        if thumb != '':
            print('thumb !!!')
            image = Image.open(image_filepath)
            w = image.width
            h = image.height
            buf = BytesIO()
            image.thumbnail((256, h*256/w))
            image.save(buf, 'png')
            img_data = buf.getvalue()
            return StreamingResponse(BytesIO(img_data), media_type="image/png")
        else:
            return FileResponse(image_filepath)