const fs = require('fs');
const path = require('path');
const { createCanvas } = require('@napi-rs/canvas');

const SIZE = 600;
const outDir = __dirname;

function roundedRect(ctx, x, y, w, h, r) {
  ctx.beginPath();
  ctx.moveTo(x + r, y);
  ctx.arcTo(x + w, y, x + w, y + h, r);
  ctx.arcTo(x + w, y + h, x, y + h, r);
  ctx.arcTo(x, y + h, x, y, r);
  ctx.arcTo(x, y, x + w, y, r);
  ctx.closePath();
}

function drawSteam(ctx, x, y, color) {
  ctx.strokeStyle = color;
  ctx.lineWidth = 10;
  ctx.lineCap = 'round';
  ctx.beginPath();
  ctx.moveTo(x, y + 36);
  ctx.bezierCurveTo(x - 14, y + 10, x + 20, y, x + 6, y - 30);
  ctx.stroke();
}

function drawRice(ctx, cx, cy, colorA, colorB) {
  // Rice mound
  const grad = ctx.createLinearGradient(cx - 100, cy - 30, cx + 100, cy + 20);
  grad.addColorStop(0, colorA);
  grad.addColorStop(1, colorB);
  ctx.fillStyle = grad;
  ctx.beginPath();
  ctx.ellipse(cx, cy, 128, 56, 0, 0, Math.PI * 2);
  ctx.fill();

  // Rice grains highlights (subtle)
  ctx.fillStyle = 'rgba(255,255,255,0.55)';
  for (let i = 0; i < 14; i++) {
    const x = cx - 95 + i * 14;
    const y = cy - 6 + ((i % 2) * 6 - 3);
    ctx.beginPath();
    ctx.ellipse(x, y, 4, 2.6, -0.3, 0, Math.PI * 2);
    ctx.fill();
  }
}

function drawLogo(theme) {
  const canvas = createCanvas(SIZE, SIZE);
  const ctx = canvas.getContext('2d');

  // Background gradient
  const bg = ctx.createLinearGradient(0, 0, SIZE, SIZE);
  bg.addColorStop(0, theme.bgFrom);
  bg.addColorStop(1, theme.bgTo);
  ctx.fillStyle = bg;
  ctx.fillRect(0, 0, SIZE, SIZE);

  // Main card
  ctx.save();
  ctx.shadowColor = theme.shadow;
  ctx.shadowBlur = 28;
  ctx.shadowOffsetY = 10;
  roundedRect(ctx, 74, 74, 452, 452, 122);
  ctx.fillStyle = theme.card;
  ctx.fill();
  ctx.restore();

  // Bowl body
  const bowlGrad = ctx.createLinearGradient(180, 280, 420, 430);
  bowlGrad.addColorStop(0, theme.bowlTop);
  bowlGrad.addColorStop(1, theme.bowlBottom);

  ctx.fillStyle = bowlGrad;
  roundedRect(ctx, 168, 302, 264, 144, 64);
  ctx.fill();

  // Bowl lip outer
  ctx.fillStyle = theme.lipOuter;
  ctx.beginPath();
  ctx.ellipse(300, 300, 154, 44, 0, 0, Math.PI * 2);
  ctx.fill();

  // Bowl lip inner
  ctx.fillStyle = theme.lipInner;
  ctx.beginPath();
  ctx.ellipse(300, 304, 104, 26, 0, 0, Math.PI * 2);
  ctx.fill();

  // Rice
  drawRice(ctx, 300, 278, theme.riceA, theme.riceB);

  // Chopsticks (to imply meal)
  ctx.strokeStyle = theme.chop;
  ctx.lineWidth = 12;
  ctx.lineCap = 'round';
  ctx.beginPath();
  ctx.moveTo(380, 178);
  ctx.lineTo(492, 290);
  ctx.stroke();
  ctx.beginPath();
  ctx.moveTo(416, 158);
  ctx.lineTo(528, 270);
  ctx.stroke();

  // Steam
  drawSteam(ctx, 240, 196, theme.steam);
  drawSteam(ctx, 300, 172, theme.steam);
  drawSteam(ctx, 360, 196, theme.steam);

  const output = path.join(outDir, theme.filename);
  fs.writeFileSync(output, canvas.toBuffer('image/png'));
  return output;
}

const light = drawLogo({
  filename: 'lunch-pick-logo-light-600-v3.png',
  bgFrom: '#F6FAFF',
  bgTo: '#EAF3FF',
  card: 'rgba(255,255,255,0.96)',
  shadow: 'rgba(16,78,147,0.18)',
  bowlTop: '#31B4F4',
  bowlBottom: '#0A85E8',
  lipOuter: '#DDE9F8',
  lipInner: '#8EA6C5',
  riceA: '#FFFFFF',
  riceB: '#EFF6FF',
  chop: '#1E4F8A',
  steam: '#5EA8EE',
});

const dark = drawLogo({
  filename: 'lunch-pick-logo-dark-600-v3.png',
  bgFrom: '#07142A',
  bgTo: '#0E2243',
  card: 'rgba(17,39,72,0.96)',
  shadow: 'rgba(0,0,0,0.46)',
  bowlTop: '#66CBFF',
  bowlBottom: '#1A9EF4',
  lipOuter: '#DDE6F2',
  lipInner: '#8CA2BC',
  riceA: '#FFFFFF',
  riceB: '#F2F7FF',
  chop: '#E4F0FF',
  steam: '#B8DCFF',
});

console.log(light);
console.log(dark);