from datetime import datetime
from os import makedirs, path
from shutil import copyfileobj, rmtree
from traceback import format_exc
from uuid import uuid4
from PIL import Image

from classes.poster_client import PosterClient

from modules.api_client import authorize, move_pic, random_pic, http_session
from modules.database import col_sent, col_submitted
from modules.logger import logWrite
from modules.utils import configGet, locale


async def send_content(app: PosterClient) -> None:

    try:

        try:
            token = await authorize()
        except ValueError:
            await app.send_message(app.owner, locale("api_creds_invalid", "message", locale=configGet("locale")))
            return

        try:
            pic = await random_pic()
        except KeyError:
            logWrite(locale("post_empty", "console", locale=configGet("locale")))
            if configGet("error", "reports"):
                await app.send_message(app.owner, locale("api_queue_empty", "message", locale=configGet("locale")))
            return
        except ValueError:
            if configGet("error", "reports"):
                await app.send_message(app.owner, locale("api_queue_error", "message", locale=configGet("locale")))
            return
        
        response = await http_session.get(f'{configGet("address", "posting", "api")}/photos/{pic[0]}', headers={"Authorization": f"Bearer {token}"}, stream=True)

        if response.status != 200:
            logWrite(locale("post_invalid_pic", "console", locale=configGet("locale")).format(response.status, str(response.json())))
            if configGet("error", "reports"):
                await app.send_message(app.owner, locale("post_invalid_pic", "message", locale=configGet("locale")).format(response.status, response.json()))

        tmp_dir = str(uuid4())

        makedirs(path.join(configGet("tmp", "locations"), tmp_dir), exist_ok=True)

        tmp_path = path.join(tmp_dir, pic[1])

        with open(path.join(configGet("tmp", "locations"), tmp_path), 'wb') as out_file:
            out_file.write(await response.read())

        logWrite(f'Candidate {pic[1]} ({pic[0]}) is {path.getsize(path.join(configGet("tmp", "locations"), tmp_path))} bytes big', debug=True)

        if path.getsize(path.join(configGet("tmp", "locations"), tmp_path)) > 5242880:
            image = Image.open(path.join(configGet("tmp", "locations"), tmp_path))
            width, height = image.size
            image = image.resize((int(width/2), int(height/2)), Image.ANTIALIAS)
            if tmp_path.lower().endswith(".jpeg") or tmp_path.lower().endswith(".jpg"):
                image.save(path.join(configGet("tmp", "locations"), tmp_path), "JPEG", optimize=True, quality=50)
            elif tmp_path.lower().endswith(".png"):
                image.save(path.join(configGet("tmp", "locations"), tmp_path), "PNG", optimize=True, compress_level=8)
            image.close()
        
        if path.getsize(path.join(configGet("tmp", "locations"), tmp_path)) > 5242880:
            rmtree(path.join(configGet("tmp", "locations"), tmp_dir), ignore_errors=True)
            raise BytesWarning

        del response

        submitted = col_submitted.find_one({"temp.file": pic[1]})

        if submitted is not None and submitted["caption"] is not None:
            caption = submitted["caption"].strip()
        else:
            caption = ""

        if submitted is not None and configGet("enabled", "posting", "submitted_caption") and (
            (submitted["user"] not in app.admins) or (configGet("ignore_admins", "posting", "submitted_caption") is False)
        ):
            caption = f"{caption}\n\n{configGet('text', 'posting', 'submitted_caption')}\n"
        else:
            caption = f"{caption}\n\n"

        if configGet("enabled", "caption"):
            if configGet("link", "caption") != None:
                caption = f"{caption}[{configGet('text', 'caption')}]({configGet('link', 'caption')})"
            else:
                caption = f"{caption}{configGet('text', 'caption')}"
        else:
            caption = caption

        try:
            sent = await app.send_photo(configGet("channel", "posting"), path.join(configGet("tmp", "locations"), tmp_path), caption=caption, disable_notification=configGet("silent", "posting"))
        except Exception as exp:
            logWrite(f"Could not send image {pic[1]} ({pic[0]}) due to {exp}")
            if configGet("error", "reports"):
                await app.send_message(app.owner, locale("post_exception", "message", locale=configGet("locale")).format(exp, format_exc()))
            # rmtree(path.join(configGet("tmp", "locations"), tmp_dir), ignore_errors=True)
            return

        col_sent.insert_one(
            {
                "date": datetime.now(),
                "image": pic[0],
                "filename": pic[1],
                "channel": configGet("channel", "posting"),
                "caption": None if (submitted is None or submitted["caption"] is None) else submitted["caption"].strip()
            }
        )

        await move_pic(pic[0])

        rmtree(path.join(configGet("tmp", "locations"), tmp_dir), ignore_errors=True)

        logWrite(locale("post_sent", "console", locale=configGet("locale")).format(pic[0], str(configGet("channel", "posting")), caption.replace("\n", "%n"), str(configGet("silent", "posting"))))

    except Exception as exp:
        logWrite(locale("post_exception", "console", locale=configGet("locale")).format(str(exp), format_exc()))
        if configGet("error", "reports"):
            await app.send_message(app.owner, locale("post_exception", "message", locale=configGet("locale")).format(exp, format_exc()))
        try:
            rmtree(path.join(configGet("tmp", "locations"), tmp_dir), ignore_errors=True)
        except:
            pass