import type { Draw } from '../src/view';
export function paint(ctx: CanvasRenderingContext2D, commands: Draw[]): void {
  for (const d of commands) {
    ctx.save(); ctx.globalAlpha = d.alpha ?? 1;
    ctx.fillStyle = d.fill || 'transparent'; ctx.strokeStyle = d.stroke || 'transparent';
    ctx.lineWidth = d.width || 1; ctx.lineCap = 'round'; ctx.lineJoin = 'round';
    ctx.beginPath();
    if (d.type === 'circle') ctx.arc(d.x, d.y, Math.max(0, d.r), 0, Math.PI * 2);
    else if (d.type === 'ellipse') ctx.ellipse(d.x, d.y, d.rx, d.ry, 0, 0, Math.PI * 2);
    else if (d.type === 'path') {
      if (d.dash) ctx.setLineDash(d.dash);
      d.points.forEach((p, i) => i ? ctx.lineTo(p.x, p.y) : ctx.moveTo(p.x, p.y));
      if (d.close) ctx.closePath();
    } else {
      ctx.font = `${d.weight || 600} ${d.size}px "Avenir Next", "Nunito", "PingFang SC", sans-serif`;
      ctx.textAlign = d.align || 'center'; ctx.textBaseline = 'middle';
      if (d.stroke) ctx.strokeText(d.text, d.x, d.y);
      ctx.fillText(d.text, d.x, d.y); ctx.restore(); continue;
    }
    if (d.fill) ctx.fill(); if (d.stroke) ctx.stroke(); ctx.restore();
  }
}