import pygame

import project_constants as const

from mine_models.standard_mine import StandardMine
from mine_models.chained_mine import ChainedMine
from mine_models.time_mine import TimeMine


# ================================= #
# === SO THE OLD BLITTING WORKS === #
# ================================= #

tile_asset_options = {
    "MUD": const.ASSET_MUD,
    "GRASS": const.ASSET_GRASS,
    "CONCRETE": const.ASSET_CONCRETE
}

mine_asset_options = {
    "MINE": const.ASSET_MINE,
    "CHAINS": const.ASSET_CHAINS,
    "TIME_MINE": const.ASSET_TIME_MINE,
}


# ====================== #
# === MAIN FUNCTIONS === #
# ====================== #


def blit_graphics(minefield):
    # background grid (fills frame with white, blits grid)
    const.SCREEN.fill((255, 255, 255))
    const.SCREEN.blit(
        const.ASSET_BACKGROUND,
        (
            const.V_SCREEN_PADDING,
            const.V_SCREEN_PADDING
        )
    )

    for row in minefield.matrix:
        for tile in row:

            # calculate tile position on the screen
            tile_screen_coords = calculate_screen_position(tile.position)

            # draw a tile
            const.SCREEN.blit(
                tile_asset_options.get(tile.terrain_type),
                tile_screen_coords
            )

            # darkening every other tile
            if (tile.position[0]+tile.position[1]) % 2 == 0:
                pass    # darken_tile(tile.position)

            # draw a mine on top if there is one
            if tile.mine is not None:
                if isinstance(tile.mine, StandardMine):
                    const.SCREEN.blit(mine_asset_options["MINE"], tile_screen_coords)

                if isinstance(tile.mine, ChainedMine):
                    predecessor = tile.mine.predecessor
                    predecessor_position = predecessor.position if predecessor is not None else None
                    display_chained_mine(tile.position, predecessor_position)

                elif isinstance(tile.mine, TimeMine):
                    display_time_mine(tile.position, "0" + str(tile.mine.timer))

    # sapper
    display_sapper(
        minefield.agent.position,
        minefield.agent.direction
    )

    # update graphics after blitting
    pygame.display.update()


# moved here from minefield
def calculate_screen_position(coords):
    coords = (
        const.V_NUMBER_PADDING + const.V_SCREEN_PADDING + const.V_TILE_SIZE * coords[1],
        const.V_NUMBER_PADDING + const.V_SCREEN_PADDING + const.V_TILE_SIZE * coords[0],
    )

    return coords


def darken_tile(coords):

    shadow = pygame.Surface((const.V_TILE_SIZE, const.V_TILE_SIZE))
    shadow.fill((220, 220, 220))

    const.SCREEN.blit(
        shadow,
        calculate_screen_position(coords),
        special_flags=pygame.BLEND_RGB_MULT
    )


# ============== #
# === SAPPER === #
# ============== #


def display_sapper(coords, direction):
    sapper_screen_coords = calculate_screen_position(coords)

    if direction == const.Direction.UP:
        const.SCREEN.blit(
            const.ASSET_SAPPER,
            sapper_screen_coords
        )
    elif direction == const.Direction.RIGHT:
        const.SCREEN.blit(
            pygame.transform.rotate(const.ASSET_SAPPER, 270),
            sapper_screen_coords
        )
    elif direction == const.Direction.DOWN:
        const.SCREEN.blit(
            pygame.transform.rotate(const.ASSET_SAPPER, 180),
            sapper_screen_coords
        )
    elif direction == const.Direction.LEFT:
        const.SCREEN.blit(
            pygame.transform.rotate(const.ASSET_SAPPER, 90),
            sapper_screen_coords
        )


# ============= #
# === TILES === #
# ============= #


def display_concrete(coords):
    const.SCREEN.blit(
        const.ASSET_CONCRETE,
        calculate_screen_position(coords)
    )


def display_mud(coords):
    const.SCREEN.blit(
        const.ASSET_MUD,
        calculate_screen_position(coords)
    )


def display_grass(coords):
    const.SCREEN.blit(
        const.ASSET_GRASS,
        calculate_screen_position(coords)
    )


# ============= #
# === MINES === #
# ============= #


def display_mine(coords):
    const.SCREEN.blit(
        const.ASSET_MINE,
        calculate_screen_position(coords)
    )


def display_chained_mine(coords, parent_coords=None):
    def display_number(which_coord, number):

        number_asset = const.ASSET_NUMBER_CHAINS_0
        if number == 1:
            number_asset = const.ASSET_NUMBER_CHAINS_1
        elif number == 3:
            number_asset = const.ASSET_NUMBER_CHAINS_3
        elif number == 4:
            number_asset = const.ASSET_NUMBER_CHAINS_4
        elif number == 5:
            number_asset = const.ASSET_NUMBER_CHAINS_5
        elif number == 6:
            number_asset = const.ASSET_NUMBER_CHAINS_6
        elif number == 7:
            number_asset = const.ASSET_NUMBER_CHAINS_7
        elif number == 8:
            number_asset = const.ASSET_NUMBER_CHAINS_8
        elif number == 9:
            number_asset = const.ASSET_NUMBER_CHAINS_9
        elif number == 10:
            number_asset = const.ASSET_NUMBER_CHAINS_10
        elif number == 11:
            number_asset = const.ASSET_NUMBER_CHAINS_11
        elif number == 12:
            number_asset = const.ASSET_NUMBER_CHAINS_12
        elif number == 13:
            number_asset = const.ASSET_NUMBER_CHAINS_13
        elif number == 14:
            number_asset = const.ASSET_NUMBER_CHAINS_14
        elif number == 15:
            number_asset = const.ASSET_NUMBER_CHAINS_15

        mine_coords = calculate_screen_position(coords)
        number_coords = mine_coords
        if which_coord == const.Coords.X:
            number_coords = (mine_coords[0] + 20, mine_coords[1] + 24)
        elif which_coord == const.Coords.Y:
            number_coords = (mine_coords[0] + 34, mine_coords[1] + 24)

        const.SCREEN.blit(
            number_asset,
            number_coords
        )

    display_mine(coords)

    if parent_coords is not None:
        const.SCREEN.blit(
            const.ASSET_CHAINS,
            calculate_screen_position(coords)
        )

        display_number(const.Coords.X, parent_coords[0])
        display_number(const.Coords.Y, parent_coords[1])


def display_time_mine(coords, time):

    def display_number(which_digit, number):

        number_asset = const.ASSET_NUMBER_TIME_0
        if number == 1:
            number_asset = const.ASSET_NUMBER_TIME_1
        elif number == 2:
            number_asset = const.ASSET_NUMBER_TIME_2
        elif number == 3:
            number_asset = const.ASSET_NUMBER_TIME_3
        elif number == 4:
            number_asset = const.ASSET_NUMBER_TIME_4
        elif number == 5:
            number_asset = const.ASSET_NUMBER_TIME_5
        elif number == 6:
            number_asset = const.ASSET_NUMBER_TIME_6
        elif number == 7:
            number_asset = const.ASSET_NUMBER_TIME_7
        elif number == 8:
            number_asset = const.ASSET_NUMBER_TIME_8
        elif number == 9:
            number_asset = const.ASSET_NUMBER_TIME_9

        mine_coords = calculate_screen_position(coords)
        number_coords = mine_coords
        if which_digit == const.Digit.ONES:
            number_coords = (mine_coords[0] + 44, mine_coords[1] + 22)
        elif which_digit == const.Digit.TENS:
            number_coords = (mine_coords[0] + 36, mine_coords[1] + 22)

        const.SCREEN.blit(
            number_asset,
            number_coords
        )

    const.SCREEN.blit(
        const.ASSET_TIME_MINE,
        calculate_screen_position(coords)
    )

    display_number(const.Digit.ONES, int(str(time)[-1]))
    display_number(const.Digit.TENS, int(str(time)[-2]))