#!/usr/bin/env python

from re import match

from evennia import CmdSet
from evennia.utils import delay, logger
from evennia.commands.default.muxcommand import MuxCommand

from .command import Command
from utils.word_list import routput

class CmdFly(Command):
    """Cast the 'fly' spell.

    Make sure you set the following properties, for instance:

    @set self/disappear_msg = "The wizard disappears in a puff of smoke."
    @set self/reappear_msg = "A plume of <<white ^ light blue ^ gray ^ >> smoke appears... ;; When the smoke clears, a wizard <<emerges ^ materializes>>."
    @set self/appear_delay = 3

    The last setting is the number of seconds between message segments
    (those are separated by double semicolons).

    """
    key = "^fly"
    locks = "call:all()"

    def func(self):
        self.caller.do_fly(self.args.strip())


class CmdSetWand(CmdSet):
    """
    All wizard spells are tied to a 'wand' that might be flavored.
    """
    key = "Wand"

    def at_cmdset_creation(self):
        super().at_cmdset_creation()
        self.add(CmdFly)


class CmdGM(MuxCommand):
    """
    The gm command allows anything to be emoted into a room.

    """
    key = "gm"
    aliases = ["#"]
    locks = "cmd:perm(gm) or perm(Admin)"

    def func(self):
        send_to = []
        for switch in self.switches:
            o = self.caller.search(switch, global_search=True)
            if o:
                send_to = send_to + [o]

        if not send_to:
            send_to = [self.caller.location]

        for o in send_to:
            if o.is_typeclass('typeclasses.rooms.Room'):
                o.msg_contents(self.args)
            elif o.is_typeclass('typeclasses.characters.Character'):
                o.msg(self.args)

        logger.info(f"switches = {self.switches} lhs={self.lhs} rhs={self.rhs} / args={self.args}")


class CmdGMTrigger(Command):
    """The trigger command kicks off a series of named events.

    Usage:

      trigger trigger-name
      trigger :game trigger-name
      trigger/character trigger-name
      trigger/character:game trigger-name

    Where 'game' defaults to the value previously set:

      @set npc/currentgame = "session1"

    Triggers are typically set on the NPC (which would be in the room
    with the PCs) or the room. Using the command:

      @set npc/triggers:session1 = {"darkness": {"desc": "Make the
      room go black", "timer": 1, "events": [ "The room gets dark",
      "And then pitch-black.", ("You can't help it, but scream!", "You
      hear a scream!")]}}

    The 'set' command, as a complicated data structure, should be set
    in a batchcommand.

    """
    key = "trigger"
    aliases = ["trig"]
    locks = "cmd:perm(gm) or perm(Admin)"

    def parse(self):
        m = match(r" *(/[^: ]+)?(:[^ ]+)? *(.*)", self.args)
        if m:
            self.name = m.group(3)
            if m.group(2):
                self.game = m.group(2)[1:]
            else:
                self.game = None
            if m.group(1):
                self.switches = m.group(1)[1:].split(',')
            else:
                self.switches = []
        else:
            self.caller.msg("Usage trigger/dest:game trigger")
            return False

    def func(self):
        npc = self.caller
        self.send_to = []

        for switch in self.switches:
            o = npc.search(switch)
            if o:
                self.send_to = self.send_to + [o]
            else:
                return

        game = self.game or npc.db.currentgame
        if not game:
            npc.msg("Specify the game, or set a default with |g@set self/currentgame = <game>")
            return

        triggers = dict(npc.attributes.get(key='triggers', category=game))

        if not self.name:
            npc.msg("What event do you want to trigger?")
            for name,details in triggers.items():
                npc.msg(f" - {name} : {details['desc']}")
            return

        trigger = triggers[self.name]
        if trigger:
            npc.msg(f"Triggering: |w{trigger['desc']}")
            self.trigger(trigger['events'],
                         trigger.get('timer', 5),
                         self.send_to)
        else:
            npc.msg(f"Didn't find '{self.name}' to trigger.")

    def trigger(self, events, time_delay, dests=[]):
        """
        Given a list of events, send each events at an interval.
        If an event is a tuple instead of a string, the first
        element goes to 'dests' and the second goes to the room
        (based on the caller's location).
        """
        for idx, event in enumerate(events):
            if isinstance(event, str):
                delay(time_delay * idx,
                      self.caller.location.msg_contents,
                      "\n" + routput(event))
            else:
                char = event[0]
                room = event[1]

                if room:
                    delay(time_delay * idx,
                          self.caller.location.msg_contents,
                          "\n" + routput(room),
                          exclude=dests)
                if char:
                    for dest in dests:
                        delay(time_delay * idx,
                              dest.msg,
                              "\n" + routput(char))