aragrp/lib/home-images.ts

import fs from "fs";
import path from "path";

export type LocalImage = {
  src: string;
  width: number;
  height: number;
};

function readJpegSize(buffer: Buffer): { width: number; height: number } {
  let i = 2;
  while (i < buffer.length) {
    if (buffer[i] !== 0xff) break;
    const marker = buffer[i + 1];
    if (marker === 0xc0 || marker === 0xc1 || marker === 0xc2) {
      return {
        height: buffer.readUInt16BE(i + 5),
        width: buffer.readUInt16BE(i + 7),
      };
    }
    i += 2 + buffer.readUInt16BE(i + 2);
  }
  throw new Error("Could not read JPEG dimensions");
}

function localImage(publicPath: string, publicUrl?: string): LocalImage {
  const filePath = path.join(process.cwd(), "public", publicPath.replace(/^\//, ""));
  const buffer = fs.readFileSync(filePath);
  const { width, height } = readJpegSize(buffer);

  return {
    src: publicUrl ?? publicPath,
    width,
    height,
  };
}

function sectionImage(filename: string): LocalImage {
  return localImage(
    `/assets/main-pic/4section/${filename}`,
    `/assets/main-pic/4section/${encodeURIComponent(filename)}`,
  );
}

export type FeatureImageKey = "item-1" | "item-2" | "item-3" | "item-4";

export type FeatureImageSet = Record<
  FeatureImageKey,
  {
    image: LocalImage;
    imageDark: LocalImage;
    alt: string;
  }
>;

export function getHomeImages() {
  return {
    hero: {
      backgroundDark: localImage("/assets/main-pic/1dark.jpg"),
      main: localImage("/assets/main-pic/1.jpg"),
      mainDark: localImage("/assets/main-pic/1dark.jpg"),
    },
    features: {
      "item-1": {
        image: sectionImage("Systems Integration.jpg"),
        imageDark: sectionImage("Systems Integration-dark.jpg"),
        alt: "یکپارچه‌سازی سیستم‌ها",
      },
      "item-2": {
        image: sectionImage("Powerful Management panels.jpg"),
        imageDark: sectionImage("Powerful Management panels-dark.jpg"),
        alt: "پنل‌های مدیریتی قدرتمند",
      },
      "item-3": {
        image: sectionImage("Interaction with Social Networks.jpg"),
        imageDark: sectionImage("Interaction with Social Networks_dark.jpg"),
        alt: "تعامل با شبکه‌های اجتماعی",
      },
      "item-4": {
        image: sectionImage("Process Automation.jpg"),
        imageDark: sectionImage("Process Automation-dark.jpg"),
        alt: "اتوماسیون فرآیندها",
      },
    } satisfies FeatureImageSet,
    ecosystem: {
      light: localImage("/assets/main-pic/intelligent-workflow-control-center.jpg"),
      dark: localImage("/assets/main-pic/intelligent-workflow-control-center-dark.jpg"),
    },
  };
}