import base64
import io
from minio import Minio
from minio.error import (ResponseError, BucketAlreadyOwnedByYou,
                         BucketAlreadyExists, NoSuchKey)
from PIL import Image
from io import BytesIO

URL = 'minio-api.sxkj.com'
ACCESS_KEY = 'admin'
SECRET_KEY = 'sxkjadmin'


class FileHandler(object):

    def __init__(self, bucket_name):
        self.bucket_name = bucket_name
        self.minio_client = Minio(URL,
                                  access_key=ACCESS_KEY,
                                  secret_key=SECRET_KEY,
                                  secure=False)
        # 无脑创桶
        try:
            self.minio_client.make_bucket(self.bucket_name)
        except BucketAlreadyExists:
            pass
        except BucketAlreadyOwnedByYou:
            pass
        except ResponseError:
            raise Exception("minio连接失败")

    # 上传图片
    def put_image(self, img_name, image):
        file_name = img_name
        file_byte = base64.b64decode(image)
        f = io.BytesIO(file_byte)
        try:
            self.minio_client.put_object(self.bucket_name, file_name, f, len(file_byte))
            return file_name
        except ResponseError:
            raise Exception("minio创建图片失败 文件名:%s" % file_name)

    def put_byte_file(self, file_name, file_content):
        f = io.BytesIO(file_content)
        try:
            self.minio_client.put_object(self.bucket_name, file_name, f, len(file_content))
            return file_name
        except ResponseError:
            raise Exception("minio创建文件失败 文件名:%s" % file_name)

    def put_np_image(self, img_name, np_image):
        file_name = img_name
        img_crop_pil = Image.fromarray(np_image)
        byte_io = BytesIO()
        img_crop_pil.save(byte_io, format="jpeg")
        jpg_buffer = byte_io.getvalue()
        byte_io = BytesIO(jpg_buffer)

        try:
            self.minio_client.put_object(self.bucket_name, img_name, byte_io, len(jpg_buffer))
            return file_name
        except ResponseError:
            raise Exception("minio创建图片失败 文件名:%s" % file_name)

    # 获取照片
    def get_file(self, img_name):
        file_name = img_name
        try:
            d = self.minio_client.get_object(self.bucket_name, file_name)
            return d.data
        except NoSuchKey:
            pass
        except Exception as e:
            print("Get minio pic failed:{}".format(e))
        return bytes()

    def del_image(self, img_name):
        file_name = img_name
        try:
            self.minio_client.remove_object(self.bucket_name, file_name)
        except ResponseError:
            raise Exception("删除minio图片失败 文件名:%s" % file_name)

    def ls_file(self, filename):
        objects = []
        try:
            objects = self.minio_client.list_objects(self.bucket_name, prefix=filename,
                                                     recursive=True)
        except ResponseError:
            raise Exception("列出文件失败")
        finally:
            return objects