# -*- encoding: utf-8 -*-
##
## Copyright (C) 2011 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published
## by the Free Software Foundation; version 3 only.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
##

from copy import copy

from pytouhou.game.sprite import Sprite
from pytouhou.vm.anmrunner import ANMRunner


class Glyph(object):
    def __init__(self, sprite, pos):
        self.sprite = sprite
        self.removed = False

        self.x, self.y = pos


class Widget(object):
    def __init__(self, pos, back_wrapper=None):
        self.sprite = None
        self.removed = False
        self.changed = True

        # Set up the backround sprite
        self.back_wrapper = back_wrapper
        if back_wrapper:
            self.sprite = Sprite()
            self.anmrunner = ANMRunner(back_wrapper, 22, self.sprite)
            self.anmrunner.run_frame()

        self.x, self.y = pos

    def update(self):
        if self.changed:
            if self.anmrunner and not self.anmrunner.run_frame():
                self.anmrunner = None
            self.changed = False



class GlyphCollection(Widget):
    def __init__(self, pos, anm_wrapper, back_wrapper=None, ref_script=0, xspacing=14):
        Widget.__init__(self, pos, back_wrapper)

        self.ref_sprite = Sprite()
        self.anm_wrapper = anm_wrapper
        self.glyphes = []
        self.xspacing = xspacing

        # Set up ref sprite
        anm_runner = ANMRunner(anm_wrapper, ref_script, self.ref_sprite)
        anm_runner.run_frame()
        self.ref_sprite.corner_relative_placement = True #TODO: perhaps not right


    def objects(self):
        return self.glyphes


    def set_length(self, length):
        current_length = len(self.glyphes)
        if length > current_length:
            self.glyphes.extend(Glyph(copy(self.ref_sprite),
                                      (self.x + self.xspacing * i, self.y))
                                        for i in range(current_length, length))
        elif length < current_length:
            self.glyphes[:] = self.glyphes[:length]


    def set_sprites(self, sprite_indexes):
        self.set_length(len(sprite_indexes))
        for glyph, idx in zip(self.glyphes, sprite_indexes):
            glyph.sprite.anm, glyph.sprite.texcoords = self.anm_wrapper.get_sprite(idx)
            glyph.sprite.changed = True



class Text(GlyphCollection):
    def __init__(self, pos, ascii_wrapper, back_wrapper=None, text=''):
        GlyphCollection.__init__(self, pos, ascii_wrapper, back_wrapper)
        self.text = ''

        self.set_text(text)


    def set_text(self, text):
        if text == self.text:
            return

        self.set_sprites([ord(c) - 21 for c in text])
        self.text = text
        self.changed = True



class Counter(GlyphCollection):
    def __init__(self, pos, anm_wrapper, back_wrapper=None, script=0, xspacing=16, value=0):
        GlyphCollection.__init__(self, pos,
                                 anm_wrapper, back_wrapper=back_wrapper,
                                 ref_script=script, xspacing=xspacing)

        self.value = value
        self.set_value(value)


    def set_value(self, value):
        if value < 0:
            value = 0
        if value == self.value:
            return

        self.set_length(value)
        self.value = value
        self.changed = True