#!/usr/bin/env python3

import time
import enum
import math
import collections
import blup.frame
import blup.output
import random


class InvalidMoveError(Exception):
    pass

class Point(collections.namedtuple('Point', ['x', 'y'])):
    __slots__ = ()

    def __add__(self, other):
        return Point(self.x + other.x, self.y + other.y)

    def floored(self):
        return Point(math.floor(self.x), math.floor(self.y))

Block = collections.namedtuple('Block', ['pos', 'color'])


class Tetrimino():
    def __init__(self, shape, playground, pos):
        self.shape = shape 
        self.playground = playground
        self.pos = pos

    @property
    def width(self):
        x = list(map(lambda s: s.pos.x, self.shape))
        return max(x) - min(x)

    @property
    def height(self):
        y = list(map(lambda s: s.pos.y, self.shape))
        return max(y) - min(y)

    @property
    def blocks(self):
        ret = { Block((self.pos + b.pos).floored(), b.color) for b in 
                self.shape }
        return ret

    def __calc_points(self, pos=None, shape=None):
        if pos is None:
            pos = self.pos
        if shape is None:
            shape = self.shape
        return { (pos + b.pos).floored() for b in shape }

    @property
    def points(self):
        return self.__calc_points()

    def __check_collision(self, newpoints):
        if not self.playground.contains_points(newpoints):
            raise InvalidMoveError('out of playground bounds')
        print(self.playground.block_points)
        print(self.playground.blocks)
        print('new', newpoints)
        if not self.playground.block_points.isdisjoint(newpoints):
            raise InvalidMoveError('new position already occupied')
        other_mino_points = self.playground.mino_points - self.points
        if not other_mino_points.isdisjoint(newpoints):
            raise InvalidMoveError('other Tetrimino at new position')

    def rotate(self, ccw=False):
        if ccw:
            transform = lambda s: Block(Point(s.pos.y, -s.pos.x), s.color)
        else:
            transform = lambda s: Block(Point(-s.pos.y, s.pos.x), s.color)
        newshape = set(map(transform, self.shape))
        newpoints = self.__calc_points(shape=newshape)
        self.__check_collision(newpoints)
        self.shape = newshape

    def move(self, m):
        newpos = self.pos + m
        newpoints = self.__calc_points(pos=newpos)
        self.__check_collision(newpoints)
        self.pos = newpos




        

class TetriL(Tetrimino):
    def __init__(self, playground, pos):
        color = (255,165,0)
        points = [(-1, 1), (-1, 0), (0, 0), (1, 0)]
        shape = { Block(Point(x, y), color) for (x, y) in points }
        Tetrimino.__init__(self, shape, playground, pos)


class TetriJ(Tetrimino):
    def __init__(self, playground, pos):
        color = (0,0,255)
        points = [(-1, 0), (0, 0), (1, 0), (1, 1)]
        shape = { Block(Point(x, y), color) for (x, y) in points }
        Tetrimino.__init__(self, shape, playground, pos)


class TetriI(Tetrimino):
    def __init__(self, playground, pos):
        color = (0,255,255)
        points = {(1.5, -0.5), (0.5, -0.5), (-0.5, -0.5), (-1.5, -0.5)}
        shape = { Block(Point(x, y), color) for (x, y) in points }
        Tetrimino.__init__(self, shape, playground, pos)


class TetriO(Tetrimino):
    def __init__(self, playground, pos):
        color = (255,255,0)
        points = {(-0.5, -0.5), (-0.5, 0.5), (0.5, -0.5), (0.5, 0.5)}
        shape = { Block(Point(x, y), color) for (x, y) in points }
        Tetrimino.__init__(self, shape, playground, pos)


class TetriS(Tetrimino):
    def __init__(self, playground, pos):
        color = (128,255,0)
        points = {(-1, 0), (0, 0), (0, -1), (1, -1)}
        shape = { Block(Point(x, y), color) for (x, y) in points }
        Tetrimino.__init__(self, shape, playground, pos)


class TetriZ(Tetrimino):
    def __init__(self, playground, pos):
        color = (255,0,0)
        points = {(-1, 0), (0, 0), (0, 1), (1, 1)}
        shape = { Block(Point(x, y), color) for (x, y) in points }
        Tetrimino.__init__(self, shape, playground, pos)


class TetriT(Tetrimino):
    def __init__(self, playground, pos):
        color = (128,0,128)
        points = {(-1, 0), (0, 0), (1, 0), (0, 1)}
        shape = { Block(Point(x, y), color) for (x, y) in points }
        Tetrimino.__init__(self, shape, playground, pos)


class Playground():
    def __init__(self, width=10, height=22):
        self.width = width
        self.height = height
        self.blocks = set()
        self.minos = set()

    @property
    def block_points(self):
        return set([ b.pos for b in self.blocks ])

    @property
    def mino_points(self):
        return set.union(set(), *[ m.points for m in self.minos ])

    def contains_points(self, points):
        for p in points:
            if p.x >= self.width or p.y >= self.height or p.x < 0 or p.y < 0:
                return False
        return True

    def paint(self, frame, xpos, ypos):
        for x in range(frame.dimension.width):
            for y in range(frame.dimension.height):
                frame.setPixel(x, y, (0, 0, 0))
        for b in set.union(self.blocks, *[ m.blocks for m in self.minos ]):
            frame.setPixel(xpos + int(b.pos.x), ypos + int(b.pos.y), b.color)

        
class TtrsGame():
    def __init__(self, playground):
        self.playground = playground
        self.running = False
        self.next_move = 0
        self.rotate = False
        self.drop = False
        self.tick_callbacks = []

    def add_tick_callback(self, cb):
        self.tick_callbacks.append(cb)

    def run(self):
        self.running = True
        spawnpos = Point(self.playground.width // 2, 0)
        mino = None
        TICK_TIME = 0.1
        FALL_INTERVAL = 5
        MOVE_INTERVAL = 1
        ticks = 0
        lastfall = 0
        lastmove = 0
        while self.running:
            for cb in self.tick_callbacks:
                cb()
            #time.sleep(TICK_TIME)
            ticks += 1

            x = input()
            if x == 'a':
                self.next_move = -1
            elif x == 'd':
                self.next_move = 1
            elif x == 'w':
                self.rotate = True
            elif x == 's':
                self.drop = True
            else:
                self.drop = False
                self.rotate = False
                self.next_move = 0


            if mino is None:
                newminocls = random.choice(Tetrimino.__subclasses__())
                mino = newminocls(self.playground, spawnpos)
                self.playground.minos = {mino}

                for y in range(self.playground.height):
                    row = { Point(x, y) for x in range(self.playground.width) }
                    if row.issubset(self.playground.block_points):
                        for b in list(self.playground.blocks):
                            if b.pos.y == y:
                                self.playground.blocks.remove(b)
                            elif b.pos.y < y:
                                self.playground.blocks.remove(b)
                                newb = Block(b.pos + Point(0, 1), b.color)
                                self.playground.blocks.add(newb)



            if ticks - lastfall >= FALL_INTERVAL or self.drop:
                lastfall = ticks
                try:
                    mino.move(Point(0, 1))
                except InvalidMoveError:
                    self.playground.blocks.update(mino.blocks)
                    mino = None
                    self.playground.minos = set()
                    continue

            if ticks - lastmove >= MOVE_INTERVAL and self.next_move != 0:
                lastmove = ticks
                try:
                    mino.move(Point(self.next_move, 0))
                except InvalidMoveError:
                    pass
                self.next_move = 0

            if self.rotate:
                self.rotate = False
                try:
                    mino.rotate()
                except InvalidMoveError:
                    pass
                
                




        



if __name__ == '__main__':
    w = 22
    h = 16

    dim = blup.frame.FrameDimension(w, h, 256, 3)
    frame = blup.frame.Frame(dim)
    out = blup.output.getOutput('e3blp')

    pg = Playground(10, 16)
    pg.paint(frame, 0, 0)
    out.sendFrame(frame)
    time.sleep(0.5)

    def repaint():
        pg.paint(frame, 0, 0)
        out.sendFrame(frame)

    game = TtrsGame(pg)
    game.add_tick_callback(repaint)
    game.run()

    #t = TetriL(pg, Point(2, 2))
    #pg.minos.add(t)
    #pg.paint(frame, 0, 0)
    #out.sendFrame(frame)
    #time.sleep(0.5)

    #for i in range(10):
    #    t.rotate(ccw=(i>=5))
    #    pg.paint(frame, 0, 0)
    #    out.sendFrame(frame)
    #    time.sleep(0.1)