# -*- coding: utf-8 -*-
import re

import irc3
from docopt import Dict
from irc3.plugins.command import command
from irc3.utils import IrcString

from . import DatabasePlugin


class Seen(DatabasePlugin):
    @command
    def seen(self, mask: IrcString, target: IrcString, args: Dict):
        """Get last seen date and message for a nick

        %%seen [<nick>]
        """
        nick = args.get('<nick>', mask.nick)

        # Don't be stupid
        if nick == mask.nick:
            return '{}, look in the mirror faggot!'.format(nick)

        # Fetch seen from database
        with self.con.cursor() as cur:
            cur.execute('''
            SELECT
              seen_at, message, channel
            FROM
              seens
            WHERE
              nick = lower(%s)
            ''', [nick])
            seen = cur.fetchone()

        # No result
        if not seen:
            return 'I\'ve never seen {}'.format(nick)

        # Return result
        return '{nick} was last seen {delta} in {channel} saying: {message}'.format(
            nick=nick,
            # TODO: relative string delta?
            delta=seen['seen_at'],
            channel=seen['channel'],
            message=re.sub(r'\x01ACTION (.*)\x01', r'/me \1', seen['message']),
        )

    @irc3.event(r'(?i)^:(?P<mask>\S+) PRIVMSG (?P<target>\S+) :(?P<msg>.*)')
    def save(self, mask: str, target: str, msg: str):
        mask = IrcString(mask)

        with self.con.cursor() as cur:
            cur.execute('''
            INSERT INTO
              seens (nick, host, channel, message)
            VALUES
              (lower(%s), %s, %s, %s)
            ON CONFLICT (nick) DO UPDATE SET
              host = excluded.host,
              channel = excluded.channel,
              seen_at = now(),
              message = excluded.message
            ''', [mask.nick, mask.host, target, msg])
        self.con.commit()