/** Pixel grids for 8-bit-style sprites. Each cell is a CSS color, or '' for transparent. */
export type PixelGrid = string[][];

function grid(rows: string[], palette: Record<string, string>): PixelGrid {
  return rows.map((row) => [...row].map((ch) => palette[ch] ?? ''));
}

const CHARACTER_PALETTE = {
  O: '#1b1611',
  H: '#4a2f1c',
  S: '#f0c090',
  s: '#d9a873',
  B: '#3f6fb0',
  b: '#2f5488',
  P: '#2c2c3e',
  p: '#20202e',
  F: '#2a1f14',
};

export const CHARACTER_SPRITE: PixelGrid = grid(
  [
    '....OOOOOOOO....',
    '..OHHHHHHHHHHO..',
    '.OHHHHHHHHHHHHO.',
    'OHHHHHHHHHHHHHHO',
    'OHHSSSSSSSSSSHHO',
    'OSSSSOSSSSOSSSSO',
    'OSSSSSSssSSSSSSO',
    '.OSSSSSSSSSSSSO.',
    '......OSSO......',
    '...OBBBBBBBBO...',
    '..OBBBBBBBBBBO..',
    '.OSBBBBBBBBBBSO.',
    '.OSBBbBBBBbBBSO.',
    '.OSBBbBBBBbBBSO.',
    '..OBBbBBBBbBBO..',
    '..OPPpPPPPpPPO..',
    '..OPPpPPPPpPPO..',
    '..OPPpO..OpPPO..',
    '..OPPpO..OpPPO..',
    '..OPPpO..OpPPO..',
    '..OFFFO..OFFFO..',
    '.OFFFFO..OFFFFO.',
  ],
  CHARACTER_PALETTE,
);

const TREE_PALETTE = {
  O: '#14290f',
  G: '#2e7d32',
  g: '#1b5e20',
  H: '#66bb6a',
  T: '#6b4226',
  t: '#4e2f1a',
  n: '#8a5a34',
};

export const TREE_SPRITE: PixelGrid = grid(
  [
    '......OggO......',
    '....OGGggGGO....',
    '..OGGGGggGGGGO..',
    '.OGgGGGHHGGGgGO.',
    'OGgGGGGHHGGGGgGO',
    'OGGgGGGggGGGgGGO',
    'OGgGGGgGGgGGGgGO',
    'OGGgGGGGGGGGgGGO',
    'OGgGGGGggGGGGgGO',
    '.OGgGGGggGGGgGO.',
    '..OGgGGggGGgGO..',
    '...OGgGggGgGO...',
    '....OGgGGgGO....',
    '......OggO......',
    '......OTTO......',
    '......TTTT......',
    '......TttT......',
    '......tnnt......',
    '......TTTT......',
    '......TOOT......',
  ],
  TREE_PALETTE,
);

const BUSH_PALETTE = {
  O: '#1b3312',
  G: '#5a9c3e',
  g: '#3f7a2a',
  H: '#a3d977',
};

// Same canopy shape as the tree's foliage (minus its trunk), just recolored and rendered
// smaller — a bush is basically a squat tree.
export const BUSH_SPRITE: PixelGrid = grid(
  [
    '......OggO......',
    '....OGGggGGO....',
    '..OGGGGggGGGGO..',
    '.OGgGGGHHGGGgGO.',
    'OGgGGGGHHGGGGgGO',
    'OGGgGGGggGGGgGGO',
    'OGgGGGgGGgGGGgGO',
    'OGGgGGGGGGGGgGGO',
    'OGgGGGGggGGGGgGO',
    '.OGgGGGggGGGgGO.',
    '..OGgGGggGGgGO..',
    '...OGgGggGgGO...',
    '....OGgGGgGO....',
    '......OggO......',
  ],
  BUSH_PALETTE,
);

const LOG_PALETTE = {
  O: '#2a1a0d',
  B: '#7a4a2b',
  C: '#a9703f',
  // Lighter sunlit top and darker shaded underside give the log roundness instead of a flat
  // plank look; scattered flecks break up the grain into rough bark texture; the knot (a
  // branch scar) and the cut end's growth rings both read as a real piece of wood.
  H: '#c9915a',
  S: '#5c3820',
  F: '#3d2818',
  K: '#241505',
  R: '#8a5a34',
  D: '#150c04',
  W: '#e8c99a',
};

export const LOG_SPRITE: PixelGrid = grid(
  [
    '.OOOOOOOOOOOOOOOOOO.',
    'OHHHHHHHHHHHHHHHOOHO',
    'OHHFHHHHHHHHHHHOCCOO',
    'OCCCCKKKCCCCCCOCWWOO',
    'OBFBKRRRKFBBBBOWCWCO',
    'OCCCKRDRKCCCCCOWWCCO',
    'OBBBKRRRKBBBBBOWDCCO',
    'OCCCCKKKCCCCCCOWCWCO',
    'OBBFBBBBBBFBBBOCWWOO',
    'OSSSSSFSSSSSSSSOCCOO',
    'OSSSSSSSSSSSSSSSOOSO',
    '.OOOOOOOOOOOOOOOOOO.',
  ],
  LOG_PALETTE,
);

const TWIG_PALETTE = {
  O: '#241708',
  T: '#8a5a34',
  L: '#5a9c3e',
};

// A forked twig: a zigzagging main stem (it bends partway up, like a real snapped branch) with a
// shorter side-fork breaking off it and a small leaf bud at the tip.
export const TWIG_SPRITE: PixelGrid = grid(
  [
    '..........LL...',
    '..........OTL..',
    '.........OTO...',
    '........OTO....',
    '.......OTO.....',
    '.OT...OTO......',
    '..OT.OTO.......',
    '...OTOTO.......',
    '....OTO........',
    '....OTO........',
    '...OTO.........',
    '..OTO..........',
    '.OTO...........',
    'OTO............',
  ],
  TWIG_PALETTE,
);

const COIN_PALETTE = {
  Y: '#f5c518',
  D: '#c99a0e',
  W: '#fff2b0',
  E: '#a97c08',
};

export const COIN_SPRITE: PixelGrid = grid(
  [
    '.....YYYYYY.....',
    '...YYYYYYYYYY...',
    '..YWWYYYYYYYYY..',
    '.YYWWYYYYYYYYYY.',
    '.YYYYYYYYYYYYYY.',
    'YYYYYDDDDDDYYYYY',
    'YYYYYDYYYYDYYYYY',
    'YYYYYDYYYYDYYYYY',
    'YYYYYDYYYYDYYYYY',
    'YYYYYDYYYYDYYYYY',
    'YYYYYDDDDDDYYYYY',
    '.YYYYYYYYYYYYYY.',
    '.YYYYYYYYYYEEYY.',
    '..YYYYYYYYYEEY..',
    '...YYYYYYYYYY...',
    '.....YYYYYY.....',
  ],
  COIN_PALETTE,
);

const RABBIT_ROWS = [
  '...OFO..OFO...',
  '...OPO..OPO...',
  '...OPO..OPO...',
  '...OPO..OPO...',
  '...OFOOOOFO...',
  '...OFFFFFFO...',
  '..FFFFFFFFFF..',
  '.OFFEFFFFEFFO.',
  'OFFFFFNNFFFFFO',
  'OFFFFFFFFFFFFO',
  'OffffffffffffO',
  '.OffffffffffO.',
  '..ffffffffff..',
  '...OffffffO...',
];

const RABBIT_PALETTE = {
  O: '#2a1f1a',
  F: '#e8e0d0',
  f: '#c9bfa8',
  P: '#f0a8b0',
  E: '#1b1611',
  N: '#d97a86',
};

export const RABBIT_SPRITE: PixelGrid = grid(RABBIT_ROWS, RABBIT_PALETTE);

// Same shape, recolored — rabbits turn red and hunt the character at night (see GameStore).
const RABBIT_NIGHT_PALETTE = {
  O: '#3a0e0e',
  F: '#c94040',
  f: '#8f2222',
  P: '#f0a8b0',
  E: '#0d0505',
  N: '#3a0e0e',
};

export const RABBIT_NIGHT_SPRITE: PixelGrid = grid(RABBIT_ROWS, RABBIT_NIGHT_PALETTE);

const MEAT_PALETTE = {
  O: '#4a1414',
  R: '#c0392b',
  r: '#8e2a20',
  W: '#f0e0d0',
};

export const MEAT_SPRITE: PixelGrid = grid(
  [
    '..............',
    '....OOOOO.....',
    '..ORRRRRRRO...',
    '.ORRWWRRRRRO..',
    '.RRRRWWRRRRR..',
    'ORRRRRRRRWRRO.',
    'ORRRRRRRRWWRO.',
    'OrrrrrrrrrrrO.',
    '.rrrrrrrrrrr..',
    '.OrrrrrrrrrO..',
    '..OrrrrrrrO...',
    '....OOOOO.....',
  ],
  MEAT_PALETTE,
);

const HEART_PALETTE = {
  O: '#5a0f0f',
  F: '#e0333f',
};

export const HEART_SPRITE: PixelGrid = grid(
  [
    '.OO..OO.',
    'OFFOOFFO',
    'OFFFFFFO',
    '.OFFFFO.',
    '..OFFO..',
    '...OO...',
  ],
  HEART_PALETTE,
);