# -*- coding: utf-8 -*-
# vim:fileencoding=utf-8 ai ts=4 sts=4 et sw=4

from product import DoomsdayVirus, MachineGun, TeslaGun


class Result(object):
    """Results of a mission"""

    def __init__(self, outcome, money, reputation, msg):
        self.outcome = outcome
        self.money = money
        self.reputation = reputation
        self.message = msg
        self.applied = False

    def apply(self, state):
        if not self.applied:
            state.money += self.money
            state.reputation += self.reputation
            self.applied = True
        else:
            raise RuntimeError('attempted to apply result twice')


class Mission(object):
    """Base class for the mission objects.
       Missions have a name, short description (for list displays) and
       long description (which may contain clues about approaches)"""

    NAME = "Generic Mission"
    SHORT_DESCRIPTION = None
    LONG_DESCRIPTION = None
    available = True

    def attempt(self, equipment, state):
        """Attempt the mission with the given equipment list.

          Returns a result object with the results of the mission."""
        return Result(False, 0, 0, "You can't succceed at this mission")


class RansomChina(Mission):

    NAME = "Hold China to ransom"
    SHORT_DESCRIPTION = "Surely a path to riches and fame"
    LONG_DESCRIPTION = "Holding China to ransom. The rewards for" \
          " successfully threatening the largest country in the world" \
          " are great, but the risks are significant. Without " \
          "some serious firepower, the chances of success are small."

    def __init__(self):
        # Track prior approaches to this mission
        self._prior_attempts = []

    def attempt(self, equipment, state):
        failures = []
        reputation = 0
        for item in equipment:
            if isinstance(item, DoomsdayVirus) and \
                    item not in self._prior_attempts:
                self._prior_attempts.add(item)
                return Result(True, 1000000, 1, "Trembling at the threat of"
                    " your doomsday virus, the chinese government pays the"
                    " ransom")
            elif isinstance(item, DoomsdayVirus):
                reputation = -1
                failures.append("'Hah, we've developed an antidote to your"
                        " virus, doctor'. You cannot threaten us with that"
                        " again'")
            else:
                failures.append("You fail to inspire fear with your %s"
                        % item.name)
        return Result(False, 0, reputation, "\n".join(failures))


class RobBank(Mission):

    NAME = "Rob the local bank"
    SHORT_DESCRIPTION = "A trivial challenge, but easy money"
    LONG_DESCRIPTION = "The security guards and local police are of minor" \
          " concern. Walk in, clean out the vault, walk out. Couldn't be" \
          " simpler."

    def attempt(self, equipment, state):
        failures = []
        for item in equipment:
            if isinstance(item, DoomsdayVirus):
                if state.reputation < 10:
                    failures.append("The clerk doesn't realise the threat of"
                            " the vial you hold, and, although watching him"
                            " die in agony would be statisfying, you decide"
                            " it's not worth wasting this on something so"
                            " trivial")
                else:
                    return Result(True, 1000, 0, "Holding up a bank with only"
                        " a small vial of clear liquid. Now that is power.")
            elif isinstance(item, MachineGun) or isinstance(item, TeslaGun):
                return Result(True, 1000, 0, "The threat of your weapons is"
                    " enough to inspire an impressive level of cooperation")
            else:
                failures.append("You fail to inspire fear with your %s"
                        % item.name)
        return Result(False, 0, 0, "\n".join(failures))


class DestroyMountRushmore(Mission):

    NAME = "Destroy Mount Rushmore"
    SHORT_DESCRIPTION = "Monuments to other people? Intolerable"
    LONG_DESCRIPTION = "While potentially expensive, destroying" \
            " major monument is a good way to secure your reputation."

    def attempt(self, equipment, state):
        if not self.available:
            raise RuntimeError('Cannot attempt an unavailable mission')
        self.available = False
        return Result(True, 0, 100,
            "Mount Rushmore is remarkably easy to destroy.")