#!/usr/bin/env python3
import hashlib
import io
import sqlite3
import time
from datetime import datetime
from os import environ, makedirs, path
from typing import Callable, Union

import requests
import wx

from Items import Item

HEIGHT = int(1440 / 2)
BTN_HEIGHT = 40
SIZE = wx.Size(68,100)
MYPATH = path.dirname(path.abspath(__file__))
SCREEN_WIDTH = int(720 / 2)
BASEPATH = path.join(str(environ.get("HOME")), '.config/cast')
DB_FILE_NAME = 'cast.db'
SUB_TABLE = 'subscriptions'
VIDEO_TABLE = 'videos'


def add_video(video_id: str,
              channel_id: str,
              provider_id: str,
              description: str,
              link: str,
              published: Union[datetime, time.struct_time],
              bitmap: wx.Bitmap,
              title: str,
              watchtime: int,
              basepath: str = BASEPATH,
              filename: str = DB_FILE_NAME) -> None:
    try:
        timestamp = published.timestamp()  #type: ignore
    except AttributeError:
        timestamp = time.mktime(published)  #type: ignore
    if not video_id:
        video_id = hash_string(link)
    thumbpath = path.join(basepath, 'thumbnails')
    thumbnail = path.join(thumbpath, video_id)
    fullpath = path.join(basepath, filename)
    if not path.isdir(thumbpath):
        makedirs(thumbpath)
    if not path.isfile(thumbnail):
        bitmap.SaveFile(thumbnail, wx.BITMAP_TYPE_PNG)
    con = sqlite3.connect(fullpath)
    cur = con.cursor()
    create_query: str = '''CREATE TABLE IF NOT EXISTS {}
    (video_id TEXT PRIMARY KEY, channel_id TEXT, provider_id TEXT,
    title TEXT, link TEXT, description TEXT, thumbnail TEXT,
    published DATETIME, watchtime NUMBER)'''.format(VIDEO_TABLE)
    cur.execute(create_query)
    con.commit()

    upsert_query: str = '''INSERT INTO {} (video_id, channel_id, provider_id, title, link, description, thumbnail, published, watchtime)
    VALUES(?,?,?,?,?,?,?,?,?) ON CONFLICT(video_id) DO NOTHING'''.format(
        VIDEO_TABLE)

    cur.execute(upsert_query, [
        video_id, channel_id, provider_id, title, link, description, thumbnail,
        int(timestamp), watchtime
    ])

    con.commit()


def get_default_logo(providerid: str = 'default') -> wx.Bitmap:
    if providerid == 'SVT':
        return wx.Bitmap('{}/assets/SVT.png'.format(MYPATH))
    else:
        return wx.Bitmap('{}/assets/Default.png'.format(MYPATH))


def get_latest(provider_id: str,
               basepath: str = BASEPATH,
               filename: str = DB_FILE_NAME) -> list[Item]:
    videos = list()
    fullpath = path.join(basepath, filename)
    try:
        con = sqlite3.connect(fullpath)
        cur = con.cursor()
        select_query = '''SELECT * FROM {} WHERE provider_id = ? ORDER BY published DESC LIMIT 50'''.format(
            VIDEO_TABLE)
        cur.execute(select_query, [provider_id])
        for result in cur.fetchall():
            description = result[5]
            link = result[4]
            provider_id = result[2]
            published = datetime.fromtimestamp(int(result[7]))
            thumbnail = wx.Bitmap(result[6])
            title = result[3]
            watchtime = result[8]

            videos.append(
                Item(description,
                     link,
                     provider_id,
                     published,
                     thumbnail,
                     title,
                     watchtime=watchtime))  # Make an item from db
    except sqlite3.OperationalError:
        pass
    return videos


def get_latest_video_timestamp(channel_id: str,
                               basepath: str = BASEPATH,
                               filename: str = DB_FILE_NAME) -> datetime:
    fullpath = path.join(basepath, filename)
    try:
        con = sqlite3.connect(fullpath)
        cur = con.cursor()
        select_query = '''SELECT max(published) FROM {} WHERE channel_id = ?'''.format(
            VIDEO_TABLE)
        cur.execute(select_query, [channel_id])
        timestamp = cur.fetchone()[0]
    except sqlite3.OperationalError:
        timestamp = 0
        pass
    return datetime.fromtimestamp(timestamp)


def get_subscriptions(basepath: str = BASEPATH,
                      filename: str = DB_FILE_NAME) -> list[tuple[str, str]]:
    subscriptions = list()
    fullpath = path.join(basepath, filename)
    try:
        con = sqlite3.connect(fullpath)
        cur = con.cursor()
        select_query = '''SELECT * FROM {}'''.format(SUB_TABLE)
        cur.execute(select_query)
        for result in cur.fetchall():
            subscriptions.append(result)
    except sqlite3.OperationalError:
        pass
    return subscriptions


def get_videos(channel_id: str,
               basepath: str = BASEPATH,
               filename: str = DB_FILE_NAME) -> list[Item]:
    videos = list()
    fullpath = path.join(basepath, filename)
    try:
        con = sqlite3.connect(fullpath)
        cur = con.cursor()
        select_query = '''SELECT * FROM {} WHERE channel_id = ? ORDER BY published DESC'''.format(
            VIDEO_TABLE)
        cur.execute(select_query, [channel_id])
        for result in cur.fetchall():
            description = result[5]
            link = result[4]
            provider_id = result[2]
            published = datetime.fromtimestamp(int(result[7]))
            thumbnail = wx.Bitmap(result[6])
            title = result[3]
            watchtime = result[8]

            videos.append(
                Item(description,
                     link,
                     provider_id,
                     published,
                     thumbnail,
                     title,
                     watchtime=watchtime))  # Make an item from db
    except sqlite3.OperationalError:
        pass
    return videos


def hash_string(string: str) -> str:
    hash_object = hashlib.sha256(string.encode('utf-8'))
    return hash_object.hexdigest()


def make_sized_button(parent_pnl: wx.Panel, bitmap_or_str: Union[wx.Bitmap,
                                                                 str],
                      text: str, callback: Callable) -> wx.BoxSizer:
    btn_sizer = wx.StaticBoxSizer(wx.HORIZONTAL,parent_pnl)
    if type(bitmap_or_str) == type(str):
        if bitmap_or_str.startswith('http'):  # type: ignore
            bitmap = make_bitmap_from_url(bitmap_or_str)  # type: ignore
        else:
            bitmap = wx.Bitmap(bitmap_or_str, wx.BITMAP_TYPE_ANY)
    else:
        bitmap = bitmap_or_str
    btn_style = wx.BORDER_NONE | wx.BU_AUTODRAW | wx.BU_EXACTFIT | wx.BU_NOTEXT
    btn_logo = wx.BitmapButton(parent_pnl,
                               wx.ID_ANY,
                               bitmap,
                               style=btn_style,
                               size=wx.Size(100,68))
    btn_logo.SetToolTip(text)
    btn_sizer.Add(btn_logo, 0, wx.EXPAND, 1)

    btn_text = wx.Button(parent_pnl,
                         wx.ID_ANY,
                         text,
                         style=wx.BORDER_NONE | wx.BU_AUTODRAW,
                         size=wx.Size(SCREEN_WIDTH - 100,
                                      SIZE.GetHeight()))
    btn_text.SetToolTip(text)
    btn_sizer.Add(btn_text, 0, wx.EXPAND, 1)
    parent_pnl.Bind(wx.EVT_BUTTON, callback, btn_logo)
    parent_pnl.Bind(wx.EVT_BUTTON, callback, btn_text)

    return btn_sizer


def make_bitmap_from_url(logo_url: str, size: wx.Size = SIZE) -> wx.Bitmap:
    res = requests.get(logo_url)
    content = res.content
    content_bytes = io.BytesIO(content)
    image = wx.Image(content_bytes, type=wx.BITMAP_TYPE_ANY, index=-1)
    scale_factor = image.GetWidth() / size.GetWidth()
    size.SetWidth(int(image.GetWidth() / scale_factor))
    height = image.GetHeight()
    size.SetHeight(int(height / scale_factor))
    image.Rescale(size.GetWidth(), size.GetHeight())
    return wx.Bitmap(image)


def make_bitmap_from_file(path, size: wx.Size = SIZE) -> wx.Bitmap:
    image = wx.Image(path, type=wx.BITMAP_TYPE_ANY, index=-1)
    scale_factor = image.GetWidth() / size.GetWidth()
    size.SetWidth(int(image.GetWidth() / scale_factor))
    height = image.GetHeight()
    size.SetHeight(int(height / scale_factor))
    image.Rescale(size.GetWidth(), size.GetHeight())
    return wx.Bitmap(image)


def resolve_svt_channel(svt_id: str) -> dict:

    channels = {
        "ch-barnkanalen": {
            "name":
            "Barnkanalen",
            "thumbnail":
            make_bitmap_from_file('{}/assets/Barnkanalen.png'.format(MYPATH))
        },
        "ch-svt1": {
            "name": "SVT 1",
            "thumbnail":
            make_bitmap_from_file('{}/assets/SVT1.png'.format(MYPATH))
        },
        "ch-svt2": {
            "name": "SVT 2",
            "thumbnail":
            make_bitmap_from_file('{}/assets/SVT2.png'.format(MYPATH))
        },
        "ch-svt24": {
            "name":
            "SVT 24",
            "thumbnail":
            make_bitmap_from_file('{}/assets/SVT24.png'.format(MYPATH))
        },
        "ch-kunskapskanalen": {
            "name":
            "Kunskapskanalen",
            "thumbnail":
            make_bitmap_from_file(
                '{}/assets/Kunskapskanalen.png'.format(MYPATH))
        },
        "feed": {
            "name": "Senaste program",
            "thumbnail":
            make_bitmap_from_file('{}/assets/SVT.png'.format(MYPATH))
        },
    }

    return channels[svt_id]


def video_exists(video_id: str,
                 channel_id: str,
                 basepath: str = BASEPATH,
                 filename: str = DB_FILE_NAME) -> bool:
    fullpath = path.join(basepath, filename)
    try:
        con = sqlite3.connect(fullpath)
        cur = con.cursor()
        select_query = '''SELECT * FROM {} WHERE channel_id = ? AND video_id = ?'''.format(
            VIDEO_TABLE)
        cur.execute(select_query, [channel_id, video_id])

        return bool(len(cur.fetchall()))
    except sqlite3.OperationalError:
        return False