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

import asyncio
from base64 import b64decode, b64encode
from os import makedirs, path, sep
from random import choice
from traceback import print_exc
from typing import Tuple, Union

import aiofiles
from aiohttp import ClientSession, FormData
from ujson import dumps

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:
        async with aiofiles.open(
            configGet("cache", "locations") + sep + "api_access", "rb"
        ) as file:
            token = b64decode(await 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 not response.ok:
        logWrite(
            f'Incorrect API credentials! Could not login into "{configGet("address", "posting", "api")}" using login "{configGet("username", "posting", "api")}": HTTP {response.status}'
        )
        raise ValueError
    async with aiofiles.open(
        configGet("cache", "locations") + sep + "api_access", "wb"
    ) as file:
        await 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)
        logWrite(f"Uploading {pic_name} to the API...", debug=True)
        async with aiofiles.open(filepath, "rb") as f:
            file_bytes = await f.read()
        formdata = FormData()
        formdata.add_field(
            "file", file_bytes, filename=pic_name, content_type="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": str(allow_duplicates).lower(),
            },
            headers={"Authorization": f"Bearer {token}"},
            data=formdata,
        )
        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 Exception as exp:
        print_exc()
        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()))