import { readFileSync, mkdirSync, writeFileSync } from "fs";
import { fileURLToPath } from "url";
import { dirname, join } from "path";
import satori from "satori";
import { Resvg } from "@resvg/resvg-js";

const __dirname = dirname(fileURLToPath(import.meta.url));
const outDir = join(__dirname, "../public/images/og");
const fontPath = join(__dirname, "fonts/SpecialElite-Regular.ttf");

mkdirSync(outDir, { recursive: true });

const fontData = readFileSync(fontPath);

const W = 1200;
const H = 630;
const NAVY = "#0a0f1e";
const GOLD = "#c9a84c";
const CREAM = "#f6f0e1";
const MUTED = "#7a8aaa";

const sections = [
  { slug: "home",        title: "Dave Gilligan",   strap: "Private AI. Jazz rooms. Civic weather. Pataphysical field notes." },
  { slug: "business",    title: "Business",         strap: "Operator studies for adults tired of consultant vapor." },
  { slug: "education",   title: "Education",        strap: "Degrees as cities, schools as chapters, study as migration." },
  { slug: "writing",     title: "Writing",          strap: "Boris Vian, jazz syntax, and the science of glorious exception." },
  { slug: "jazz-music",  title: "Jazz and Music",   strap: "Listening notes, Kongsberg nights, Caveau memories." },
  { slug: "ai-lab",      title: "AI Lab",           strap: "Forward-looking, grounded, open-source friendly." },
  { slug: "norway",      title: "Norway",           strap: "Field reports from Norwegian civic and family life." },
  { slug: "cv",          title: "CV",               strap: "Professional, legible, confident." },
  { slug: "family",      title: "Family",           strap: "The soft archive, still edited like it matters." },
  { slug: "fun-postings",title: "Fun Postings",     strap: "Useful nonsense, neatly set." },
  { slug: "languages",   title: "Languages",        strap: "Polyglot, sly, welcoming." },
  { slug: "projects",    title: "Projects",         strap: "Builder energy, clean receipts." },
  { slug: "family-lab",  title: "Family Lab",       strap: "Private archive, atlas, memory room." },
];

function buildNode({ title, strap }) {
  return {
    type: "div",
    props: {
      style: {
        display: "flex",
        flexDirection: "column",
        width: W,
        height: H,
        background: NAVY,
        position: "relative",
      },
      children: [
        // top gold rule
        {
          type: "div",
          props: {
            style: {
              position: "absolute",
              top: 0,
              left: 0,
              width: W,
              height: 8,
              background: GOLD,
            },
          },
        },
        // domain label
        {
          type: "div",
          props: {
            style: {
              position: "absolute",
              top: 28,
              left: 64,
              fontFamily: "SpecialElite",
              fontSize: 16,
              color: GOLD,
              letterSpacing: "0.18em",
              textTransform: "uppercase",
            },
            children: "DAVEGILLIGAN.COM",
          },
        },
        // left accent line
        {
          type: "div",
          props: {
            style: {
              position: "absolute",
              top: 64,
              left: 64,
              width: 3,
              height: H - 128,
              background: GOLD,
              opacity: 0.35,
            },
          },
        },
        // section title
        {
          type: "div",
          props: {
            style: {
              position: "absolute",
              top: 200,
              left: 96,
              right: 64,
              fontFamily: "SpecialElite",
              fontSize: title.length > 12 ? 64 : 80,
              color: CREAM,
              lineHeight: 1.1,
            },
            children: title,
          },
        },
        // strap line
        {
          type: "div",
          props: {
            style: {
              position: "absolute",
              top: title.length > 12 ? 330 : 360,
              left: 96,
              right: 64,
              fontFamily: "SpecialElite",
              fontSize: 22,
              color: MUTED,
              lineHeight: 1.5,
            },
            children: strap,
          },
        },
        // bottom label
        {
          type: "div",
          props: {
            style: {
              position: "absolute",
              bottom: 36,
              left: 96,
              fontFamily: "SpecialElite",
              fontSize: 14,
              color: GOLD,
              letterSpacing: "0.12em",
              textTransform: "uppercase",
            },
            children: "Blue Note Logic  ·  Kongsberg",
          },
        },
      ],
    },
  };
}

for (const section of sections) {
  const svg = await satori(buildNode(section), {
    width: W,
    height: H,
    fonts: [
      {
        name: "SpecialElite",
        data: fontData,
        weight: 400,
        style: "normal",
      },
    ],
  });

  const resvg = new Resvg(svg, {
    fitTo: { mode: "width", value: W },
  });
  const png = resvg.render().asPng();
  const outPath = join(outDir, `${section.slug}.png`);
  writeFileSync(outPath, png);
  console.log(`✓  ${section.slug}.png  (${(png.length / 1024).toFixed(0)} KB)`);
}

console.log(`\nAll ${sections.length} OG images written to public/images/og/`);