from PyQt5 import QtGui as QG, QtCore as QC

NES_PALETTE = [
    "#7C7C7C",  # 00
    "#0000FC",  # 01
    "#0000BC",  # 02
    "#4428BC",  # 03
    "#940084",  # 04
    "#A80020",  # 05
    "#A81000",  # 06
    "#881400",  # 07
    "#503000",  # 08
    "#007800",  # 09
    "#006800",  # 0A
    "#005800",  # 0B
    "#004058",  # 0C
    "#000000",  # 0D
    "#000000",  # 0E
    "#000000",  # 0F

    "#BCBCBC",  # 10
    "#0078F8",  # 11
    "#0058F8",  # 12
    "#6844FC",  # 13
    "#D800CC",  # 14
    "#E40058",  # 15
    "#F83800",  # 16
    "#E45C10",  # 17
    "#AC7C00",  # 18
    "#00B800",  # 19
    "#00A800",  # 1A
    "#00A844",  # 1B
    "#008888",  # 1C
    "#000000",  # 1D
    "#000000",  # 1E
    "#000000",  # 1F

    "#F8F8F8",  # 20
    "#3CBCFC",  # 21
    "#6888FC",  # 22
    "#9878F8",  # 23
    "#F878F8",  # 24
    "#F85898",  # 25
    "#F87858",  # 26
    "#FCA044",  # 27
    "#F8B800",  # 28
    "#B8F818",  # 29
    "#58D854",  # 2A
    "#58F898",  # 2B
    "#00E8D8",  # 2C
    "#787878",  # 2D
    "#000000",  # 2E
    "#000000",  # 2F

    "#FCFCFC",  # 30
    "#A4E4FC",  # 31
    "#B8B8F8",  # 32
    "#D8B8F8",  # 33
    "#F8B8F8",  # 34
    "#F8A4C0",  # 35
    "#F0D0B0",  # 36
    "#FCE0A8",  # 37
    "#F8D878",  # 38
    "#D8F878",  # 39
    "#B8F8B8",  # 3A
    "#B8F8D8",  # 3B
    "#00FCFC",  # 3C
    "#F8D8F8",  # 3D
    "#000000",  # 3E
    "#000000",  # 3F
]

QT_NES_PALETTE = [QG.QColor(color).rgb() for color in NES_PALETTE]

TILE_PALETTES = {
    "Primary":  [0x20, 0x16, 0x19, 0x01],
    "Megaman": [0x20, 0x0f, 0x21, 0x01],
    "Mario": [0x20, 0x16, 0x36, 0x07],
    "Luigi": [0x0f, 0x30, 0x37, 0x19],
    "Link": [0x20, 0x29, 0x37, 0x28],
    "Simon": [0x0f, 0x28, 0x37, 0x07],
    "White Mage": [0x0f, 0x16, 0x30, 0x37],
    "Black Mage": [0x0f, 0x28, 0x08, 0x01],
}


def is_dark(qt_colour):
    r, g, b = qt_colour.red(), qt_colour.green(), qt_colour.blue()
    luminance = (0.2126*r + 0.7152*g + 0.0722*b)/256

    return luminance < 0.5


def widget_icon_path(widget):
    return "darkside" if is_dark(widget.palette().color(QG.QPalette.Background)) else "lightside"


def palette_to_qt(palette):
    return [
        QG.QColor(0, 0, 0, 0).rgba() if color_idx is None
        else QG.QColor(NES_PALETTE[color_idx]).rgb()
        for color_idx in palette
    ]


def palette_to_pixmap(palette):
    pixmap = QG.QPixmap(QC.QSize(80, 20))
    painter = QG.QPainter(pixmap)
    palette = [QG.QColor(NES_PALETTE[colour_idx]) for colour_idx in palette]
    for idx, colour in enumerate(palette):
        painter.setPen(colour)
        brush = QG.QBrush()
        brush.setColor(colour)
        brush.setStyle(QC.Qt.SolidPattern)
        painter.setBrush(brush)
        painter.drawRect(idx*20, 0, idx*20 + 19, 19)
    return pixmap