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import os
import tempfile
from typing import Any
from dataclasses import dataclass
import httpx
from yarl import URL
from PIL import Image
import io
from .utils import get_api
from .credential import Credential
@dataclass
class Picture:
"""
(@dataclasses.dataclass)
图片类，包含图片链接、尺寸以及下载操作。
Args:
height (int) : 高度
imageType (str) : 格式，例如: png
size (Any) : 尺寸
url (str) : 图片链接
width (int) : 宽度
content (bytes): 图片内容
可以不实例化，用 `from_url`, `from_content` 或 `from_file` 加载图片。
"""
height: int = -1
imageType: str = ""
size: Any = ""
url: str = ""
width: int = -1
content: bytes = b""
def __repr__(self) -> str:
# no content...
return f"Picture(height='{self.height}', width='{self.width}', imageType='{self.imageType}', size={self.size}, url='{self.url}')"
def __set_picture_meta_from_bytes(self, imgtype: str) -> None:
tmp_dir = tempfile.gettempdir()
img_path = os.path.join(tmp_dir, "test." + imgtype)
with open(img_path, "wb+") as file:
file.write(self.content)
img = Image.open(img_path)
self.size = int(round(os.path.getsize(img_path) / 1024, 0))
self.height = img.height
self.width = img.width
self.imageType = imgtype
@staticmethod
async def async_load_url(url: str) -> "Picture":
"""
加载网络图片。(async 方法)
Args:
url (str): 图片链接
Returns:
Picture: 加载后的图片对象
"""
if URL(url).scheme == "":
url = "https:" + url
obj = Picture()
session = httpx.AsyncClient()
resp = await session.get(
url,
headers={"User-Agent": "Mozilla/5.0"},
)
obj.content = resp.read()
obj.url = url
obj.__set_picture_meta_from_bytes(url.split("/")[-1].split(".")[1])
return obj
@staticmethod
def from_url(url: str) -> "Picture":
"""
加载网络图片。
Args:
url (str): 图片链接
Returns:
Picture: 加载后的图片对象
"""
if URL(url).scheme == "":
url = "https:" + url
obj = Picture()
session = httpx.Client()
resp = session.get(
url,
headers={"User-Agent": "Mozilla/5.0"},
)
obj.content = resp.read()
obj.url = url
obj.__set_picture_meta_from_bytes(url.split("/")[-1].split(".")[1])
return obj
@staticmethod
def from_file(path: str) -> "Picture":
"""
加载本地图片。
Args:
path (str): 图片地址
Returns:
Picture: 加载后的图片对象
"""
obj = Picture()
with open(path, "rb") as file:
obj.content = file.read()
obj.url = "file://" + path
obj.__set_picture_meta_from_bytes(os.path.basename(path).split(".")[1])
return obj
@staticmethod
def from_content(content: bytes, format: str) -> "Picture":
"""
加载字节数据
Args:
content (str): 图片内容
format (str): 图片后缀名，如 `webp`, `jpg`, `ico`
Returns:
Picture: 加载后的图片对象
"""
obj = Picture()
obj.content = content
obj.url = "bytes://" + content.decode("utf-8", errors="ignore")
obj.__set_picture_meta_from_bytes(format)
return obj
def _write_to_temp_file(self):
tmp_dir = tempfile.gettempdir()
img_path = os.path.join(tmp_dir, "test." + self.imageType)
open(img_path, "wb").write(self.content)
return img_path
async def upload_file(self, credential: Credential, data: dict = None) -> "Picture":
"""
上传图片至 B 站。
Args:
credential (Credential): 凭据类。
Returns:
Picture: `self`
"""
from ..dynamic import upload_image
res = await upload_image(self, credential, data)
self.height = res["image_height"]
self.width = res["image_width"]
self.url = res["image_url"]
self.content = self.from_url(self.url).content
return self
def upload_file_sync(self, credential: Credential) -> "Picture":
"""
上传图片至 B 站。(同步函数)
Args:
credential (Credential): 凭据类。
Returns:
Picture: `self`
"""
from ..dynamic import upload_image_sync
res = upload_image_sync(self, credential)
self.url = res["image_url"]
self.height = res["image_height"]
self.width = res["image_width"]
self.content = self.from_url(self.url).content
return self
def download_sync(self, path: str) -> "Picture":
"""
下载图片至本地。(同步函数)
Args:
path (str): 下载地址。
Returns:
Picture: `self`
"""
tmp_dir = tempfile.gettempdir()
img_path = os.path.join(tmp_dir, "test." + self.imageType)
open(img_path, "wb").write(self.content)
img = Image.open(img_path)
img.save(path, save_all=(True if self.imageType in ["webp", "gif"] else False))
self.url = "file://" + path
return self
def convert_format(self, new_format: str) -> "Picture":
"""
将图片转换为另一种格式。
Args:
new_format (str): 新的格式。例：`png`, `ico`, `webp`.
Returns:
Picture: `self`
"""
tmp_dir = tempfile.gettempdir()
img_path = os.path.join(tmp_dir, "test." + self.imageType)
open(img_path, "wb").write(self.content)
img = Image.open(img_path)
new_img_path = os.path.join(tmp_dir, "test." + new_format)
img.save(new_img_path)
with open(new_img_path, "rb") as file:
self.content = file.read()
self.__set_picture_meta_from_bytes(new_format)
return self
async def download(self, path: str) -> "Picture":
"""
下载图片至本地。
Args:
path (str): 下载地址。
Returns:
Picture: `self`
"""
tmp_dir = tempfile.gettempdir()
img_path = os.path.join(tmp_dir, "test." + self.imageType)
open(img_path, "wb").write(self.content)
img = Image.open(img_path)
img.save(path, save_all=(True if self.imageType in ["webp", "gif"] else False))
self.url = "file://" + path
return self
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