#!/usr/bin/env node
/**
 * Generates the print-ready VECTOR artwork served by the App Shop:
 * run with `node scripts/make-print-art.mjs` (output is committed, so this is
 * only needed when the artwork changes).
 *   public/images/print/skatespots-sticker.svg   (55 × 86 mm)
 *   public/images/print/skatespots-poster.svg    (A3, 297 × 420 mm)
 *
 * Self-contained: brand fonts (Outfit variable + Barlow Condensed) and the logo
 * are embedded as data URIs, and the QR is real vector from `qrcode`. That means
 * it prints crisp at any size and needs no network.
 */
import { readFileSync, writeFileSync, mkdirSync } from 'node:fs';
import { join, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';
import { createRequire } from 'node:module';

const ROOT = join(dirname(fileURLToPath(import.meta.url)), '..');
const require = createRequire(join(ROOT, 'package.json'));
const QRCode = require('qrcode');

const OUT = join(ROOT, 'public/images/print');
mkdirSync(OUT, { recursive: true });

const ORANGE = '#f08c2a';
const WHITE = '#ffffff';
const BG = '#0a0a0a';
const QR_URL = 'https://skate-spots.org';

// ── assets ───────────────────────────────────────────────────────────────────
const b64 = (p) => readFileSync(p).toString('base64');
const outfit = b64(join(ROOT, 'node_modules/@fontsource-variable/outfit/files/outfit-latin-wght-normal.woff2'));
const barlow = b64(join(ROOT, 'node_modules/@fontsource/barlow-condensed/files/barlow-condensed-latin-600-normal.woff2'));
const logoPng = b64(join(ROOT, 'public/images/icon-1024.png'));

const FONTS = `
  <style>
    @font-face { font-family:'Outfit'; font-weight:100 900; font-style:normal; font-display:block;
      src:url(data:font/woff2;base64,${outfit}) format('woff2'); }
    @font-face { font-family:'Barlow Condensed'; font-weight:600; font-style:normal; font-display:block;
      src:url(data:font/woff2;base64,${barlow}) format('woff2'); }
    .h { font-family:'Outfit', system-ui, sans-serif; font-weight:900; }
    .c { font-family:'Barlow Condensed', system-ui, sans-serif; font-weight:600; letter-spacing:0.18em; }
  </style>`;

/** Real QR module path (no background) + its viewBox size. */
async function qrPath() {
  const svg = await QRCode.toString(QR_URL, {
    type: 'svg',
    margin: 0,
    errorCorrectionLevel: 'H',
    color: { dark: '#000000', light: '#ffffff' },
  });
  const m = svg.match(/<path[^>]*d="([^"]+)"[^>]*\/?>/g) || [];
  // The first path is the solid background; the rest are the modules.
  const modulePath = (svg.match(/<path stroke="#000000" d="([^"]+)"/) || [])[1];
  const vb = (svg.match(/viewBox="0 0 ([0-9.]+) ([0-9.]+)"/) || [])[1] || '31';
  return { d: modulePath, size: Number(vb), all: m.length };
}

/** White QR card: panel + modules + centred logo. Units are the caller's. */
function qrCard({ x, y, size, qr, radius, logoFrac = 0.26 }) {
  const pad = size * 0.055; // quiet-ish inset
  const inner = size - pad * 2;
  const s = inner / qr.size;
  const logoS = size * logoFrac;
  const logoX = x + size / 2 - logoS / 2;
  const logoY = y + size / 2 - logoS / 2;
  const discR = logoS * 0.62;
  return `
  <rect x="${x}" y="${y}" width="${size}" height="${size}" rx="${radius}" fill="${WHITE}"/>
  <g transform="translate(${x + pad} ${y + pad}) scale(${s})">
    <path fill="none" stroke="#000000" stroke-width="1" d="${qr.d}"/>
  </g>
  <circle cx="${x + size / 2}" cy="${y + size / 2}" r="${discR}" fill="${WHITE}"/>
  <image x="${logoX}" y="${logoY}" width="${logoS}" height="${logoS}"
         href="data:image/png;base64,${logoPng}" preserveAspectRatio="xMidYMid meet"/>`;
}

/** Block-shadowed headline: orange offset copy behind a white one. */
function headline({ text, cx, y, size, width, offset, stroke = 0, letterSpacing = '0.01em' }) {
  const common = `text-anchor="middle" x="${cx}" y="${y}" font-size="${size}" letter-spacing="${letterSpacing}"` +
    (width ? ` textLength="${width}" lengthAdjust="spacingAndGlyphs"` : '');
  return `
  <text class="h" ${common} fill="${ORANGE}" transform="translate(${offset} ${offset})">${text}</text>
  <text class="h" ${common} fill="${WHITE}" ${stroke ? `stroke="${ORANGE}" stroke-width="${stroke}" paint-order="stroke"` : ''}>${text}</text>`;
}

/** Sawtooth ribbon of alternating triangles. dir: 'down' means apex points down. */
function ribbon({ y, width, height, dir, count = 13 }) {
  const w = width / count;
  let out = '';
  for (let i = 0; i < count; i++) {
    const x = i * w;
    const fill = i % 2 === 0 ? ORANGE : WHITE;
    const pts =
      dir === 'down'
        ? `${x},${y} ${x + w / 2},${y + height} ${x + w},${y}`
        : `${x},${y + height} ${x + w / 2},${y} ${x + w},${y + height}`;
    out += `<polygon points="${pts}" fill="${fill}"/>`;
  }
  return out;
}

const dashed = ({ y, x1, x2, color = '#3a3a3a', w = 4 }) =>
  `<line x1="${x1}" y1="${y}" x2="${x2}" y2="${y}" stroke="${color}" stroke-width="${w}" stroke-dasharray="18 14"/>`;

// ── sticker (portrait, 55 × 86 mm at 0.1 mm units) ───────────────────────────
async function sticker() {
  const qr = await qrPath();
  const W = 550, H = 860;
  const qrSize = 400;
  return `<svg xmlns="http://www.w3.org/2000/svg" width="55mm" height="86mm" viewBox="0 0 ${W} ${H}">
  ${FONTS}
  <rect width="${W}" height="${H}" rx="34" fill="#000000"/>
  ${headline({ text: 'DO YOU EVEN SKATE', cx: W / 2, y: 150, size: 92, width: 470, offset: 5, stroke: 2 })}
  ${headline({ text: 'BRO?', cx: W / 2, y: 330, size: 190, width: 330, offset: 8, stroke: 3 })}
  ${qrCard({ x: (W - qrSize) / 2, y: 420, size: qrSize, qr, radius: 44 })}
</svg>\n`;
}

// ── poster (A3 portrait, 0.1 mm units → 2970 × 4200) ─────────────────────────
async function poster() {
  const qr = await qrPath();
  const W = 2970, H = 4200;
  const qrSize = 1500;
  const cx = W / 2;
  return `<svg xmlns="http://www.w3.org/2000/svg" width="297mm" height="420mm" viewBox="0 0 ${W} ${H}">
  ${FONTS}
  <rect width="${W}" height="${H}" fill="${BG}"/>

  <!-- sawtooth ribbons -->
  ${ribbon({ y: 0, width: W, height: 74, dir: 'down', count: 13 })}
  ${ribbon({ y: H - 74, width: W, height: 74, dir: 'up', count: 13 })}

  <!-- header -->
  <rect x="120" y="150" width="30" height="30" fill="${ORANGE}"/>
  <rect x="${W - 150}" y="150" width="30" height="30" fill="${ORANGE}"/>
  <text class="c" x="${cx}" y="188" fill="${WHITE}" text-anchor="middle" font-size="72" textLength="860" lengthAdjust="spacingAndGlyphs">SKATESPOTS.APP</text>
  ${dashed({ y: 250, x1: 130, x2: W - 130 })}

  <!-- headline -->
  ${headline({ text: 'DO YOU EVEN SKATE', cx, y: 620, size: 300, width: 2350, offset: 12, stroke: 4 })}
  ${headline({ text: 'BRO?', cx, y: 1000, size: 520, width: 1150, offset: 18, stroke: 6 })}
  <text class="c" x="${cx}" y="1140" fill="${ORANGE}" text-anchor="middle" font-size="104" textLength="1750" lengthAdjust="spacingAndGlyphs">FIND SPOTS. SESH TOGETHER. NO CAP.</text>
  ${dashed({ y: 1240, x1: 130, x2: W - 130 })}

  <!-- qr -->
  ${qrCard({ x: cx - qrSize / 2, y: 1370, size: qrSize, qr, radius: 70 })}
  ${dashed({ y: 3260, x1: 130, x2: W - 130 })}

  <!-- footer -->
  <text class="c" x="${cx}" y="3480" fill="${WHITE}" text-anchor="middle" font-size="130" textLength="1950" lengthAdjust="spacingAndGlyphs">SCAN. DOWNLOAD. GET OUT THERE.</text>
  <line x1="130" y1="3600" x2="${W - 130}" y2="3600" stroke="${ORANGE}" stroke-width="5"/>
  <text class="c" x="${cx}" y="3700" fill="#8a8a8a" text-anchor="middle" font-size="80" letter-spacing="0.04em" textLength="1250" lengthAdjust="spacingAndGlyphs">zapstore.dev/apps/org.skatespots.app</text>
</svg>\n`;
}

const s = await sticker();
const p = await poster();
writeFileSync(join(OUT, 'skatespots-sticker.svg'), s);
writeFileSync(join(OUT, 'skatespots-poster.svg'), p);
console.log('sticker:', s.length, 'bytes');
console.log('poster :', p.length, 'bytes');
console.log('→', OUT);