# Copyright 2020 Canonical, Ltd.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


COLORS = [
    # black
    ("bg", (0x11, 0x11, 0x11)),
    # dark red
    ("danger", (0xFF, 0x00, 0x00)),
    # dark green
    ("good", (0x0E, 0x84, 0x20)),
    # brown
    ("orange", (0xE9, 0x54, 0x20)),
    # dark blue
    ("neutral", (0x00, 0x7A, 0xA6)),
    # dark magenta
    ("brand", (0x33, 0x33, 0x33)),
    # dark cyan
    ("gray", (0x80, 0x80, 0x80)),
    # light gray
    ("fg", (0xFF, 0xFF, 0xFF)),
]

PALETTE_COLOR = [
    ("frame_header_fringe", "orange", "bg"),
    ("frame_header", "fg", "orange"),
    ("body", "fg", "bg"),
    ("done_button", "fg", "bg"),
    ("danger_button", "fg", "bg"),
    ("other_button", "fg", "bg"),
    ("done_button focus", "fg", "good"),
    ("danger_button focus", "fg", "danger"),
    ("other_button focus", "fg", "gray"),
    ("menu_button", "fg", "bg"),
    ("menu_button focus", "fg", "gray"),
    ("frame_button", "fg", "orange"),
    ("frame_button focus", "orange", "fg"),
    ("info_primary", "fg", "bg"),
    ("info_minor", "gray", "bg"),
    ("info_minor header", "gray", "orange"),
    ("info_error", "danger", "bg"),
    ("string_input", "bg", "fg"),
    ("string_input focus", "fg", "gray"),
    ("progress_incomplete", "fg", "gray"),
    ("progress_complete", "fg", "neutral"),
    ("scrollbar", "brand", "bg"),
    ("scrollbar focus", "gray", "bg"),
    ("verified", "good", "bg"),
    ("verified focus", "good", "gray"),
    ("verified invisible", "bg", "bg"),
    ("verified inv focus", "gray", "gray"),
    ("starred", "orange", "bg"),
    ("starred focus", "orange", "gray"),
    ("user_code", "fg", "good"),
]

PALETTE_MONO = [
    ("frame_header_fringe", "white", "black"),
    ("frame_header", "black", "white"),
    ("body", "white", "black"),
    ("done_button", "white", "black"),
    ("danger_button", "white", "black"),
    ("other_button", "white", "black"),
    ("done_button focus", "black", "white"),
    ("danger_button focus", "black", "white"),
    ("other_button focus", "black", "white"),
    ("menu_button", "white", "black"),
    ("menu_button focus", "black", "white"),
    ("frame_button", "black", "white"),
    ("frame_button focus", "white", "black"),
    ("info_primary", "white", "black"),
    ("info_minor", "white", "black"),
    ("info_minor header", "black", "white"),
    ("info_error", "white", "black"),
    ("string_input", "white", "black"),
    ("string_input focus", "black", "white"),
    ("progress_incomplete", "white", "black"),
    ("progress_complete", "black", "white"),
    ("scrollbar_fg", "white", "black"),
    ("scrollbar_bg", "white", "black"),
    ("verified", "white", "black"),
    ("verified focus", "black", "white"),
    ("verified invisible", "white", "black"),
    ("verified inv focus", "black", "white"),
    ("starred", "white", "black"),
    ("starred focus", "black", "white"),
    ("user_code", "white", "black"),
]

urwid_8_names = (
    "black",
    "dark red",
    "dark green",
    "brown",
    "dark blue",
    "dark magenta",
    "dark cyan",
    "light gray",
)


def _urwidize_palette(colors, styles):
    """Return a palette to be passed to MainLoop.

    colors is a list of exactly 8 tuples (name, (r, g, b))

    styles is a list of tuples (stylename, fg_color, bg_color) where
    fg_color and bg_color are defined in 'colors'
    """
    # The part that makes this "fun" is that urwid insists on referring
    # to the basic colors by their "standard" names but we overwrite
    # these colors to mean different things.  So we convert styles into
    # an urwid palette by mapping the names in colors to the standard
    # name.
    if len(colors) != 8:
        raise Exception("make_palette must be passed a list of exactly 8 colors")
    urwid_name = dict(zip([c[0] for c in colors], urwid_8_names))

    urwid_palette = []
    for name, fg, bg in styles:
        urwid_fg, urwid_bg = urwid_name[fg], urwid_name[bg]
        urwid_palette.append((name, urwid_fg, urwid_bg))

    return urwid_palette


PALETTE_COLOR = _urwidize_palette(COLORS, PALETTE_COLOR)