import fs from "fs";
import path from "path";
import { fileURLToPath } from "url";

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const ROOT = path.join(__dirname, "../src/assets/fonts/irancell/fonts-editor");
const OUT_JSON = path.join(ROOT, "fonts.json");
const OUT_CSS = path.join(ROOT, "fonts.css");

const WEIGHT_LABELS = {
  100: "Thin",
  200: "Extra Light",
  300: "Light",
  400: "Regular",
  500: "Medium",
  600: "Semi Bold",
  700: "Bold",
  800: "Extra Bold",
  900: "Black",
};

/** @type {Array<{ id: string; label: string; cssFamily: string; category: "persian" | "english"; faces: Array<{ weight: number; src: string; format?: string }> }>} */
const FONT_FAMILIES = [
  {
    id: "irancell",
    label: "ایرانسل",
    cssFamily: "editor-irancell",
    category: "persian",
    defaultWeight: "300",
    faces: [
      { weight: 200, src: "../irancell-extralight.ttf" },
      { weight: 300, src: "../irancell-light.ttf" },
      { weight: 600, src: "../irancell-bold.ttf" },
      { weight: 700, src: "../irancell-bold.ttf" },
    ],
  },
  {
    id: "peyda",
    label: "پیدا",
    cssFamily: "editor-peyda",
    category: "persian",
    faces: [
      { weight: 100, src: "Persian Font/peyda/woff2/PeydaWeb-Thin.woff2", format: "woff2" },
      { weight: 200, src: "Persian Font/peyda/woff2/peydaWeb-extralight.woff2", format: "woff2" },
      { weight: 300, src: "Persian Font/peyda/woff2/peydaWeb-light.woff2", format: "woff2" },
      { weight: 400, src: "Persian Font/peyda/woff2/PeydaWeb-Regular.woff2", format: "woff2" },
      { weight: 500, src: "Persian Font/peyda/woff2/PeydaWeb-Medium.woff2", format: "woff2" },
      { weight: 600, src: "Persian Font/peyda/woff2/PeydaWeb-SemiBold.woff2", format: "woff2" },
      { weight: 700, src: "Persian Font/peyda/woff2/PeydaWeb-Bold.woff2", format: "woff2" },
      { weight: 800, src: "Persian Font/peyda/woff2/PeydaWeb-ExtraBold.woff2", format: "woff2" },
      { weight: 900, src: "Persian Font/peyda/woff2/PeydaWeb-Black.woff2", format: "woff2" },
    ],
  },
  {
    id: "iransans-fanum",
    label: "ایران‌سنس (اعداد فارسی)",
    cssFamily: "editor-iransans-fanum",
    category: "persian",
    faces: [
      { weight: 200, src: "Persian Font/IRANSansWeb(FaNum)_UltraLight.ttf" },
      { weight: 300, src: "Persian Font/IRANSansWeb(FaNum)_Light.ttf" },
      { weight: 400, src: "Persian Font/IRANSansWeb(FaNum).ttf" },
      { weight: 500, src: "Persian Font/IRANSansWeb(FaNum)_Medium.ttf" },
      { weight: 700, src: "Persian Font/IRANSansWeb(FaNum)_Bold.ttf" },
    ],
  },
  {
    id: "sahel",
    label: "ساحل",
    cssFamily: "editor-sahel",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/Sahel-VF.ttf" }],
  },
  {
    id: "yekan",
    label: "یکان",
    cssFamily: "editor-yekan",
    category: "persian",
    faces: [
      { weight: 400, src: "Persian Font/Yekan.ttf" },
      { weight: 700, src: "Persian Font/BYekan.ttf" },
    ],
  },
  {
    id: "btehran",
    label: "تهران",
    cssFamily: "editor-btehran",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/BTehran.ttf" }],
  },
  {
    id: "byagut",
    label: "یاقوت",
    cssFamily: "editor-byagut",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/BYagut.ttf" }],
  },
  {
    id: "byas",
    label: "یاس",
    cssFamily: "editor-byas",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/BYas.ttf" }],
  },
  {
    id: "bzar",
    label: "زر",
    cssFamily: "editor-bzar",
    category: "persian",
    faces: [{ weight: 700, src: "Persian Font/BZarBd.ttf" }],
  },
  {
    id: "bkoodak",
    label: "کودک",
    cssFamily: "editor-bkoodak",
    category: "persian",
    faces: [{ weight: 700, src: "Persian Font/BKoodakBold.ttf" }],
  },
  {
    id: "bbaran",
    label: "باران",
    cssFamily: "editor-bbaran",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/BBaran.ttf" }],
  },
  {
    id: "broya",
    label: "رویا",
    cssFamily: "editor-broya",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/BRoya.ttf" }],
  },
  {
    id: "bmahsa",
    label: "مهسا",
    cssFamily: "editor-bmahsa",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/BMahsa.ttf" }],
  },
  {
    id: "bmorvarid",
    label: "مروارید",
    cssFamily: "editor-bmorvarid",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/BMorvarid.ttf" }],
  },
  {
    id: "bbc-nassim",
    label: "نسیم",
    cssFamily: "editor-bbc-nassim",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/BBCNassim.ttf" }],
  },
  {
    id: "far-titr",
    label: "تیتر",
    cssFamily: "editor-far-titr",
    category: "persian",
    faces: [{ weight: 400, src: "Persian Font/Far_TitrDF.ttf" }],
  },
  {
    id: "roboto",
    label: "Roboto",
    cssFamily: "editor-roboto",
    category: "english",
    faces: [
      { weight: 100, src: "English Font/Roboto-Thin-webfont.ttf" },
      { weight: 300, src: "English Font/Roboto-Light-webfont.ttf" },
      { weight: 400, src: "English Font/Roboto-Regular-webfont.ttf" },
      { weight: 500, src: "English Font/Roboto-Medium-webfont.ttf" },
      { weight: 700, src: "English Font/Roboto-Bold-webfont.ttf" },
      { weight: 900, src: "English Font/Roboto-Black-webfont.ttf" },
    ],
  },
  {
    id: "roboto-condensed",
    label: "Roboto Condensed",
    cssFamily: "editor-roboto-condensed",
    category: "english",
    faces: [
      { weight: 400, src: "English Font/Roboto-Condensed-webfont.ttf" },
      { weight: 700, src: "English Font/Roboto-BoldCondensed-webfont.ttf" },
    ],
  },
  {
    id: "vollkorn",
    label: "Vollkorn",
    cssFamily: "editor-vollkorn",
    category: "english",
    faces: [
      { weight: 400, src: "English Font/Vollkorn-Regular.ttf" },
      { weight: 500, src: "English Font/Vollkorn-Medium.ttf" },
      { weight: 600, src: "English Font/Vollkorn-Semibold.ttf" },
      { weight: 700, src: "English Font/Vollkorn-Bold.ttf" },
    ],
  },
  {
    id: "caviar-dreams",
    label: "Caviar Dreams",
    cssFamily: "editor-caviar-dreams",
    category: "english",
    faces: [
      { weight: 400, src: "English Font/CaviarDreams.ttf" },
      { weight: 700, src: "English Font/CaviarDreams_Bold.ttf" },
    ],
  },
  {
    id: "raleway",
    label: "Raleway",
    cssFamily: "editor-raleway",
    category: "english",
    faces: [
      { weight: 200, src: "English Font/raleway-extralight-webfont.ttf" },
      { weight: 400, src: "English Font/raleway-regular-webfont.ttf" },
      { weight: 500, src: "English Font/raleway-medium-webfont.ttf" },
      { weight: 600, src: "English Font/raleway-semibold-webfont.ttf" },
      { weight: 700, src: "English Font/raleway-bold-webfont.ttf" },
      { weight: 800, src: "English Font/raleway-extrabold-webfont.ttf" },
    ],
  },
  {
    id: "proxima-nova",
    label: "Proxima Nova",
    cssFamily: "editor-proxima-nova",
    category: "english",
    faces: [
      { weight: 300, src: "English Font/proximanova-light-webfont.ttf" },
      { weight: 400, src: "English Font/proximanova-reg-webfont.ttf" },
      { weight: 600, src: "English Font/proximanova-semibold-webfont.ttf" },
      { weight: 700, src: "English Font/proximanova-bold-webfont.ttf" },
      { weight: 800, src: "English Font/proximanova-extrabold-webfont.ttf" },
      { weight: 900, src: "English Font/proximanova-black-webfont.ttf" },
    ],
  },
  {
    id: "proxima-nova-condensed",
    label: "Proxima Nova Condensed",
    cssFamily: "editor-proxima-nova-condensed",
    category: "english",
    faces: [
      { weight: 300, src: "English Font/proximanovacond-light-webfont.ttf" },
      { weight: 600, src: "English Font/proximanovacond-semiboldit-webfont.ttf" },
    ],
  },
  {
    id: "din-pro",
    label: "DIN Pro",
    cssFamily: "editor-din-pro",
    category: "english",
    faces: [
      { weight: 400, src: "English Font/dinpro-regular.ttf" },
      { weight: 500, src: "English Font/dinpro-medium.ttf" },
      { weight: 700, src: "English Font/dinpro-bold.ttf" },
      { weight: 900, src: "English Font/dinpro-black.ttf" },
    ],
  },
  {
    id: "din-alternate",
    label: "DIN Alternate",
    cssFamily: "editor-din-alternate",
    category: "english",
    faces: [
      { weight: 300, src: "English Font/din-lightalternate.ttf" },
      { weight: 400, src: "English Font/din-regularalternate.ttf" },
      { weight: 500, src: "English Font/din-mediumalternate.ttf" },
      { weight: 700, src: "English Font/din-boldalternate.ttf" },
      { weight: 900, src: "English Font/din-blackalternate.ttf" },
    ],
  },
  {
    id: "abril-fatface",
    label: "Abril Fatface",
    cssFamily: "editor-abril-fatface",
    category: "english",
    faces: [{ weight: 400, src: "English Font/AbrilFatface-Regular.otf", format: "opentype" }],
  },
  {
    id: "anton",
    label: "Anton",
    cssFamily: "editor-anton",
    category: "english",
    faces: [{ weight: 400, src: "English Font/Anton.ttf" }],
  },
  {
    id: "bebas-neue",
    label: "Bebas Neue",
    cssFamily: "editor-bebas-neue",
    category: "english",
    faces: [{ weight: 400, src: "English Font/Bebas Neue.ttf" }],
  },
  {
    id: "kepler-std",
    label: "Kepler Std",
    cssFamily: "editor-kepler-std",
    category: "english",
    faces: [{ weight: 400, src: "English Font/kepler-std.ttf" }],
  },
  {
    id: "playfair-display",
    label: "Playfair Display",
    cssFamily: "editor-playfair-display",
    category: "english",
    faces: [{ weight: 900, src: "English Font/playfairdisplay-black-webfont.ttf" }],
  },
];

function encodeUrlSegment(segment) {
  return segment
    .split("/")
    .map((part) => encodeURIComponent(part))
    .join("/");
}

function buildCss(families) {
  const blocks = families.flatMap((family) =>
    family.faces.map((face) => {
      const formatSuffix = face.format ? ` format("${face.format}")` : "";
      const url = encodeUrlSegment(face.src);
      return `@font-face {
  font-family: "${family.cssFamily}";
  font-style: normal;
  font-weight: ${face.weight};
  src: url("${url}")${formatSuffix};
}`;
    }),
  );

  return `/* Auto-generated by scripts/generate-editor-fonts.mjs — do not edit manually */\n\n${blocks.join("\n\n")}\n`;
}

function buildJson(families) {
  const fonts = families.map((family) => {
    const srcToFace = new Map();
    for (const face of family.faces) {
      const existing = srcToFace.get(face.src);
      if (!existing || face.weight > existing.weight) {
        srcToFace.set(face.src, face);
      }
    }

    const uniqueWeightFaces = [...srcToFace.values()].sort(
      (a, b) => a.weight - b.weight,
    );

    const uniqueWeights = uniqueWeightFaces.map((f) => f.weight);

    return {
      id: family.id,
      label: family.label,
      cssFamily: family.cssFamily,
      category: family.category,
      defaultWeight: family.defaultWeight
        ? String(family.defaultWeight)
        : uniqueWeights.includes(400)
          ? "400"
          : String(uniqueWeights[0]),
      weights: uniqueWeightFaces.map((face) => ({
        value: String(face.weight),
        label: WEIGHT_LABELS[face.weight] || String(face.weight),
      })),
    };
  });

  return {
    version: 1,
    fonts,
  };
}

function verifySources(families) {
  const missing = [];
  for (const family of families) {
    for (const face of family.faces) {
      const resolved = face.src.startsWith("../")
        ? path.join(ROOT, face.src)
        : path.join(ROOT, face.src);
      if (!fs.existsSync(resolved)) {
        missing.push(resolved);
      }
    }
  }
  if (missing.length) {
    console.error("Missing font files:\n" + missing.map((m) => `  - ${m}`).join("\n"));
    process.exit(1);
  }
}

verifySources(FONT_FAMILIES);

const json = buildJson(FONT_FAMILIES);
const css = buildCss(FONT_FAMILIES);

fs.writeFileSync(OUT_JSON, JSON.stringify(json, null, 2) + "\n");
fs.writeFileSync(OUT_CSS, css);

console.log(`Wrote ${OUT_JSON}`);
console.log(`Wrote ${OUT_CSS}`);
console.log(`Fonts: ${json.fonts.length}`);