"""This is only a temporary solution. Complete Photos API client is yet to be developed."""

try:
    from ujson import dumps
except ModuleNotFoundError:
    from json import dumps

import asyncio
from base64 import b64decode, b64encode
from ujson import dumps
from os import makedirs, path, sep
from random import choice
from typing import Tuple, Union
from aiohttp import ClientSession

from classes.exceptions import SubmissionUploadError

from modules.logger import logWrite
from modules.utils import configGet


http_session = ClientSession(json_serialize=dumps, )


async def authorize() -> str:
    makedirs(configGet("cache", "locations"), exist_ok=True)
    if path.exists(configGet("cache", "locations")+sep+"api_access") is True:
        with open(configGet("cache", "locations")+sep+"api_access", "rb") as file:
            token = b64decode(file.read()).decode("utf-8")
        if (await http_session.get(configGet("address", "posting", "api")+"/users/me/", headers={"Authorization": f"Bearer {token}"})).status == 200:
            return token
    payload = {
        "grant_type": "password",
        "scope": "me albums.list albums.read albums.write photos.list photos.read photos.write videos.list videos.read videos.write",
        "username": configGet("username", "posting", "api"),
        "password": configGet("password", "posting", "api")
    }
    response = await http_session.post(configGet("address", "posting", "api")+"/token", data=payload)
    if response.status != 200:
        logWrite(f'Incorrect API credentials! Could not login into "{configGet("address", "posting", "api")}" using login "{configGet("username", "posting", "api")}": HTTP {response.status}')
        raise ValueError
    with open(configGet("cache", "locations")+sep+"api_access", "wb") as file:
        file.write(b64encode((await response.json())["access_token"].encode("utf-8")))
    return (await response.json())["access_token"]

async def random_pic(token: Union[str, None] = None) -> Tuple[str, str]:
    """Returns random image id and filename from the queue.

    ### Returns:
        * `Tuple[str, str]`: First value is an ID and the filename in the filesystem to be indexed.
    """    
    token = await authorize() if token is None else token
    logWrite(f'{configGet("address", "posting", "api")}/albums/{configGet("album", "posting", "api")}/photos?q=&page_size={configGet("page_size", "posting")}&caption=queue')
    resp = await http_session.get(f'{configGet("address", "posting", "api")}/albums/{configGet("album", "posting", "api")}/photos?q=&page_size={configGet("page_size", "posting")}&caption=queue', headers={"Authorization": f"Bearer {token}"})
    print(await resp.json(), flush=True)
    if resp.status != 200:
        logWrite(f'Could not get photos from album {configGet("album", "posting", "api")}: HTTP {resp.status}')
        logWrite(f'Could not get photos from "{configGet("address", "posting", "api")}/albums/{configGet("album", "posting", "api")}/photos?q=&page_size={configGet("page_size", "posting")}&caption=queue" using token "{token}": HTTP {resp.status}', debug=True)
        raise ValueError
    if len((await resp.json())["results"]) == 0:
        raise KeyError
    pic = choice((await resp.json())["results"])
    return pic["id"], pic["filename"]

async def upload_pic(filepath: str, allow_duplicates: bool = False, token: Union[str, None] = None) -> Tuple[bool, list]:
    token = await authorize() if token is None else token
    try:
        pic_name = path.basename(filepath)
        files = {'file': (pic_name, open(filepath, 'rb'), 'image/jpeg')}
        response = await http_session.post(f'{configGet("address", "posting", "api")}/albums/{configGet("album", "posting", "api")}/photos', params={"caption": "queue", "compress": False, "ignore_duplicates": allow_duplicates}, headers={"Authorization": f"Bearer {token}"}, files=files)
        if response.status != 200 and response.status != 409:
            logWrite(f"Could not upload '{filepath}' to API: HTTP {response.status} with message '{response.content}'")
            raise SubmissionUploadError(str(filepath), response.status, response.content)
        duplicates = []
        if "duplicates" in (await response.json()):
            for index, duplicate in enumerate((await response.json())["duplicates"]):
                if (await response.json())["access_token"] is None:
                    duplicates.append(f'`{duplicate["id"]}`:\n{configGet("address_external", "posting", "api")}/photos/{duplicate["id"]}')
                else:
                    duplicates.append(f'`{duplicate["id"]}`:\n{configGet("address_external", "posting", "api")}/token/photo/{(await response.json())["access_token"]}?id={index}')
        return True, duplicates
    except:
        return False, []
    
async def find_pic(name: str, caption: Union[str, None] = None, token: Union[str, None] = None) -> Union[dict, None]:
    token = await authorize() if token is None else token
    try:
        response = await http_session.get(f'{configGet("address", "posting", "api")}/albums/{configGet("album", "posting", "api")}/photos', params={"q": name, "caption": caption}, headers={"Authorization": f"Bearer {token}"})
        # logWrite(response.json())
        if response.status != 200:
            return None
        if len((await response.json())["results"]) == 0:
            return None
        return (await response.json())["results"]
    except Exception as exp:
        logWrite(f"Could not find image with name '{name}' and caption '{caption}' due to: {exp}")
        return None

async def move_pic(id: str, token: Union[str, None] = None) -> bool:
    token = await authorize() if token is None else token
    try:
        await http_session.patch(f'{configGet("address", "posting", "api")}/photos/{id}?caption=sent', headers={"Authorization": f"Bearer {token}"})
        return True
    except:
        return False

if __name__ == "__main__":
    print(asyncio.run(authorize()))