###
# Copyright (c) 2019, Pedro de Oliveira
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
#   * Redistributions in binary form must reproduce the above copyright notice,
#     this list of conditions, and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#   * Neither the name of the author of this software nor the name of
#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.

###

from supybot import utils, plugins, ircutils, callbacks
from supybot.commands import *
try:
    from supybot.i18n import PluginInternationalization
    _ = PluginInternationalization('LastFM')
except ImportError:
    # Placeholder that allows to run the plugin on a bot
    # without the i18n module
    _ = lambda x: x
import supybot.utils.minisix as minisix
import os
import sqlite3
import pylast

class SqliteLastFMDB(object):
    def __init__(self, filename):
        self.dbs = ircutils.IrcDict()
        self.filename = filename

    def close(self):
        for db in self.dbs.values():
            db.close()

    def _getDb(self, channel):
        filename = plugins.makeChannelFilename(self.filename, channel)
        if filename in self.dbs:
            return self.dbs[filename]
        if os.path.exists(filename):
            db = sqlite3.connect(filename, check_same_thread=False)
            if minisix.PY2:
                db.text_factory = str
            self.dbs[filename] = db
            return db
        db = sqlite3.connect(filename, check_same_thread=False)
        if minisix.PY2:
            db.text_factory = str
        self.dbs[filename] = db
        cursor = db.cursor()
        cursor.execute("""CREATE TABLE lastfm (
                          id INTEGER PRIMARY KEY,
                          nick TEXT,
                          user TEXT
                          )""")
        db.commit()
        return db

    def get_user(self, channel, nick):
        db = self._getDb(channel)
        cursor = db.cursor()
        cursor.execute("""SELECT user FROM lastfm
                          WHERE nick=?""", (nick,))
        result = cursor.fetchone()
        if result:
            return result[0]
        else:
            return None

    def set_user(self, channel, nick, user):
        db = self._getDb(channel)
        cursor = db.cursor()
        cursor.execute("""DELETE FROM lastfm
                          WHERE nick=?""", (nick,))
        cursor.execute("""INSERT INTO lastfm VALUES (NULL, ?, ?)""",
                       (nick, user,))
        db.commit()

LastFMDB = plugins.DB('LastFM',
                     {'sqlite3': SqliteLastFMDB})

class LastFM(callbacks.Plugin):
    """Last.fm client"""

    def __init__(self, irc):
        self.__parent = super(LastFM, self)
        self.__parent.__init__(irc)
        self.db = LastFMDB()
    
    def die(self):
        self.__parent.die()
        self.db.close()

    def setuser(self, irc, msg, args, channel, user):
        """[<channel>] <last.fm user>

        Assigns the last.fm user to the current nick.
        """
        self.db.set_user(channel, msg.nick.lower(), user)
        irc.reply("Last.fm user set as {} for {}".format(user, msg.nick), prefixNick=False)
    setuser = wrap(setuser, ['channel', 'anything'])

    def nowplaying(self, irc, msg, args, channel, user):
        """[<channel>] [<last.fm user>]

        Show the currently playing song.
        """
        key = self.registryValue('apiKey')
        secret = self.registryValue('apiSecret')

        if not key:
            irc.error("Last.fm API key not set")
            return
        if not secret:
            irc.error("Last.fm API secret not set")
            return

        if user:
            username = user
        else:
            username = self.db.get_user(channel, msg.nick.lower())

        network = pylast.LastFMNetwork(api_key=key, api_secret=secret)
        userinfo = network.get_user(username)
        irc.reply(userinfo.get_now_playing(), prefixNick=False)
    nowplaying = wrap(nowplaying, ['channel', optional('anything')])

Class = LastFM


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