import io
from typing import cast, List

from telegram import ReplyKeyboardRemove
from telegram.constants import ChatAction
from telegram.ext import CallbackContext

from command import *
from dbstore.peewee_store import get_poi_by_fsq_id
from foursquare.poi import OSM_ENDPOINT
from foursquare.poi import query_poi
from config import BOT_SCOPE
from dbstore.peewee_store import User, db, TOOT_VISIBILITY_PRIVATE, TOOT_VISIBILITY_PUBLIC, TOOT_VISIBILITY_UNLISTED
import uuid
from mastodon import Mastodon


def generate_uuid():
    return str(uuid.uuid4())


def get_mastodon_client(user_id: int):
    with db.connection_context():
        user = User.get(User.telegram_user_id == user_id)
        if user.home_instance and user.access_key:
            return Mastodon(access_token=user.access_key, api_base_url=user.home_instance)


def generate_toot_text(poi_name, poi_locality, poi_region, poi_lat, poi_lon):
    osm_url = OSM_ENDPOINT.format(poi_lat, poi_lon)

    location = ""
    if poi_locality:
        location = poi_locality
    if poi_region:
        location += ", " + poi_region
    if location:
        return f"I'm at {poi_name} in {location}, {osm_url}"
    else:
        return f"I'm at {poi_name}, {osm_url}"


async def get_img_file_bytes(telegram_media_file):
    img = io.BytesIO()
    await telegram_media_file.download_to_memory(img)
    img.seek(0)

    return img.read()


async def process_media_group(context: CallbackContext):
    context.job.data = cast(List[MsgDict], context.job.data)

    mastodon_client = get_mastodon_client(context.user_data["user_id"])
    media_id = []
    chat_id = context.job.data[0].get("chat_id")
    for media_dict in context.job.data:
        if len(media_id) >= 4:
            await context.bot.send_message(chat_id=chat_id, text=PROMPT_MAX_PHOTO_REACHED, reply_markup=MAIN_MENU)
            return

        file = await context.bot.get_file(media_dict.get("media_id"))
        img = await get_img_file_bytes(file)
        media = mastodon_client.media_post(img, description=media_dict.get("caption"), mime_type="image/jpeg")
        media_id.append(media["id"])

        mastodon_client.status_update(id=media_dict.get("status_id"),
                                      status=media_dict.get("content"),
                                      media_ids=media_id)

    await context.bot.send_message(chat_id=chat_id, text=PROMPT_DONE, reply_markup=MAIN_MENU)


async def callback_generate_fedi_login_url(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    home_instance = update.effective_message.text
    client_id, client_secret = Mastodon.create_app(
        "Checkin.bot",
        scopes=BOT_SCOPE,
        redirect_uris="{}{}".format(BOT_DOMAIN, FEDI_LOGIN_CALLBACK_URL),
        api_base_url=home_instance,
    )

    m = Mastodon(client_id=client_id, client_secret=client_secret, api_base_url=home_instance)

    user_id = update.effective_user.id
    state = generate_uuid()

    db.connect()
    u = User.get_or_none(telegram_user_id=user_id)
    if u is None:
        u = User.create(telegram_user_id=user_id, access_key="", home_instance=home_instance,
                        client_id=client_id, client_secret=client_secret, state=state)
        u.save()
    db.close()

    oauth_url = m.auth_request_url(redirect_uris="{}{}".format(BOT_DOMAIN, FEDI_LOGIN_CALLBACK_URL),
                                                 scopes=BOT_SCOPE,
                                                 state=state)

    await update.message.reply_text(PROMPT_FEDI_LOGIN,
                                    reply_markup=InlineKeyboardMarkup([[InlineKeyboardButton("Login", url=oauth_url)]]),
                                    parse_mode=ParseMode.MARKDOWN)

    return FEDI_LOGIN


async def callback_location_sharing(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    if update.message.venue is not None:
        context.user_data["fsq_id"] = update.message.venue.foursquare_id
        context.user_data["title"] = update.message.venue.title
        context.user_data["latitude"] = update.message.venue.location.latitude
        context.user_data["longitude"] = update.message.venue.location.longitude

        poi = get_poi_by_fsq_id(context.user_data.get("fsq_id"))
        content = generate_toot_text(poi["name"], poi["locality"], poi["region"], poi["latitude"], poi["longitude"])
        status = get_mastodon_client(update.effective_user.id).status_post(content, visibility=TOOT_VISIBILITY_PRIVATE, media_ids=[])

        context.user_data[KEY_TOOT_STATUS_ID] = status["id"]
        context.user_data[KEY_TOOT_STATUS_CONTENT] = content

        await update.message.reply_text(text=f"Selected place: {poi['name']}, \nPosted to Mastodon: {status['url']}",
                                        parse_mode=ParseMode.MARKDOWN)

        msg = await update.message.reply_text(PROMPT_ADD_COMMENT, reply_markup=INLINE_SKIP_MENU)
        context.user_data[PROMPT_ADD_COMMENT] = msg.message_id

        return ADD_COMMENT
    else:
        context.user_data["latitude"] = update.message.location.latitude
        context.user_data["longitude"] = update.message.location.longitude

        await update.message.reply_text("Searching...", reply_markup=ReplyKeyboardRemove())
        msg = await update.message.reply_text(PROMPT_LOCATION_KEYWORD, reply_markup=INLINE_SKIP_MENU)

        context.user_data[PROMPT_LOCATION_KEYWORD] = msg.message_id
        return LOCATION_SEARCH_KEYWORD


async def _process_location_search(keyword, lat, lon) -> list:
    keyboard = []
    poi_result = []

    if keyword:
        poi_result = query_poi(keyword, lat, lon)

    if len(poi_result) == 0:
        poi_result = query_poi("", lat, lon)

    for poi in poi_result:
        keyboard.append([
            InlineKeyboardButton(poi["name"], callback_data=poi["fsq_id"]),
        ])
    return keyboard


async def callback_location_keyword_search(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    await context.bot.delete_message(update.effective_chat.id, context.user_data.get(PROMPT_LOCATION_KEYWORD))
    key = update.effective_message.text

    keyboard = await _process_location_search(key, context.user_data.get("latitude"), context.user_data.get("longitude"))

    if len(keyboard) == 0:
        msg = await update.message.reply_text(PROMPT_WAIT_LOCATION_CONFIRMATION_NO_NEARBY_POI)
    else:
        msg = await update.message.reply_text(PROMPT_WAIT_LOCATION_CONFIRMATION,
                                              reply_markup=InlineKeyboardMarkup(keyboard))

    context.user_data[PROMPT_WAIT_LOCATION_CONFIRMATION] = msg.message_id
    return LOCATION_CONFIRMATION


async def callback_skip_location_keyword_search(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    query = update.callback_query
    await query.answer()
    await query.message.delete()

    keyboard = await _process_location_search("", context.user_data.get("latitude"), context.user_data.get("longitude"))
    await query.message.reply_text(PROMPT_WAIT_LOCATION_CONFIRMATION, reply_markup=InlineKeyboardMarkup(keyboard))

    return LOCATION_CONFIRMATION


async def _process_location_selection(context: ContextTypes.DEFAULT_TYPE) -> int:
    poi_name = context.user_data.get("poi_name")
    if context.user_data.get("fsq_id") is not None:
        poi = get_poi_by_fsq_id(context.user_data.get("fsq_id"))
        content = generate_toot_text(poi["name"], poi["locality"], poi["region"], poi["latitude"], poi["longitude"])
    else:
        content = generate_toot_text(poi_name, "", "", context.user_data.get("latitude"), context.user_data.get("longitude"))

    status = get_mastodon_client(context.user_data["user_id"]).status_post(content, visibility=TOOT_VISIBILITY_PRIVATE, media_ids=[])

    context.user_data[KEY_TOOT_STATUS_ID] = status["id"]
    context.user_data[KEY_TOOT_STATUS_CONTENT] = content

    await context.bot.send_message(chat_id=context.user_data.get("chat_id"),
                                   text=f"Selected place: {poi_name}, \nPosted to Mastodon: {status['url']}",
                                   parse_mode=ParseMode.MARKDOWN)

    msg = await context.bot.send_message(chat_id=context.user_data.get("chat_id"),
                                         text=PROMPT_ADD_COMMENT,
                                         reply_markup=INLINE_SKIP_MENU)

    context.user_data[PROMPT_ADD_COMMENT] = msg.message_id

    return ADD_COMMENT


async def callback_location_confirmation(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    query = update.callback_query
    await query.answer()
    context.user_data["fsq_id"] = query.data
    context.user_data["user_id"] = update.effective_user.id
    await query.delete_message()

    context.user_data["chat_id"] = update.effective_chat.id

    return await _process_location_selection(context)


async def callback_manual_location(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    context.user_data["poi_name"] = update.effective_message.text
    context.user_data["chat_id"] = update.effective_chat.id
    context.user_data["user_id"] = update.effective_user.id

    return await _process_location_selection(context)


async def _process_comment(context: ContextTypes.DEFAULT_TYPE) -> int:
    msg = await context.bot.send_message(chat_id=context.user_data.get("chat_id"),
                                         text=PROMPT_ADD_MEDIA,
                                         reply_markup=INLINE_SKIP_MENU)
    context.user_data[PROMPT_ADD_MEDIA] = msg.message_id
    return ADD_MEDIA


async def callback_add_comment(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    context.user_data["chat_id"] = update.effective_chat.id
    await context.bot.delete_message(update.effective_chat.id, context.user_data.get(PROMPT_ADD_COMMENT))

    comment = update.effective_message.text
    get_mastodon_client(update.effective_user.id).status_update(id=context.user_data.get(KEY_TOOT_STATUS_ID),
                                  status=f"{comment} " + context.user_data.get(KEY_TOOT_STATUS_CONTENT))
    context.user_data[KEY_TOOT_STATUS_CONTENT] = f"{comment} " + context.user_data.get(KEY_TOOT_STATUS_CONTENT)

    return await _process_comment(context)


async def callback_skip_comment(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    context.user_data["chat_id"] = update.effective_chat.id
    await context.bot.delete_message(update.effective_chat.id, context.user_data.get(PROMPT_ADD_COMMENT))

    return await _process_comment(context)


async def callback_add_media(update: Update, context: CallbackContext):
    await update.message.reply_chat_action(ChatAction.TYPING)

    try:
        await context.bot.delete_message(chat_id=update.message.chat_id,
                                         message_id=context.user_data.get(PROMPT_ADD_MEDIA))
    except BadRequest as e:
        if "not found" in str(e.message):
            pass

    mastodon_client = get_mastodon_client(update.effective_user.id)
    status_id = context.user_data.get(KEY_TOOT_STATUS_ID)
    status_content = context.user_data.get(KEY_TOOT_STATUS_CONTENT)

    message = update.effective_message
    context.user_data["media"] = []
    if message.media_group_id:
        media_id = message.photo[-1].file_id if message.photo else message.effective_attachment.file_id
        group_media = {
            "media_id": media_id,
            "caption": message.caption_html,
            "status_id": status_id,
            "content": status_content,
            "chat_id": message.chat_id,
        }
        jobs = context.job_queue.get_jobs_by_name(str(message.media_group_id))
        if jobs:
            jobs[0].data.append(group_media)
        else:
            context.job_queue.run_once(callback=process_media_group,
                                       when=MEDIA_GROUP_TIMEOUT,
                                       data=[group_media],
                                       name=str(message.media_group_id))
    else:
        file = await update.message.effective_attachment[-1].get_file()
        img = await get_img_file_bytes(file)
        media = mastodon_client.media_post(img,
                                           description=message.caption_html,
                                           mime_type="image/jpeg")
        mastodon_client.status_update(status=status_content, id=status_id, media_ids=media["id"])

        await update.message.reply_text(text=PROMPT_DONE, reply_markup=MAIN_MENU)


async def callback_skip_media(update: Update, context: ContextTypes.DEFAULT_TYPE) -> int:
    query = update.callback_query
    await query.answer()

    await query.delete_message()
    await query.message.reply_text(text=PROMPT_DONE, reply_markup=MAIN_MENU)

    return ConversationHandler.END