tuyenio
106 lines
4.0 KiB
JavaScript
106 lines
4.0 KiB
JavaScript
// Nén ảnh panorama + modal, backup bản gốc, sinh ảnh mờ (LQIP).
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// Chạy: node scripts/optimize-images.mjs (chạy lại nhiều lần an toàn — luôn nén từ backup gốc)
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import sharp from "sharp";
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import { promises as fs } from "node:fs";
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import path from "node:path";
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const ROOT = process.cwd();
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const PANO_DIR = path.join(ROOT, "public/images/chua-thai-lac");
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const MODAL_DIR = path.join(ROOT, "public/modal");
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const BACKUP_DIR = path.join(ROOT, "image-originals");
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const LQIP_OUT = path.join(ROOT, "src/app/tours/chua-thai-lac.lqip.ts");
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const PANO_WIDTH = 4096;
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const PANO_WEBP_QUALITY = 72;
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const PANO_QUALITY = 80;
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const LQIP_WIDTH = 32;
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const MODAL_FILES = ["modal-1.png", "modal-2.png"];
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const fmt = (b) => (b / 1024 / 1024).toFixed(2) + "MB";
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const ensureDir = (d) => fs.mkdir(d, { recursive: true });
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const exists = (p) => fs.access(p).then(() => true).catch(() => false);
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// Đảm bảo ảnh gốc đã được backup; luôn ĐỌC từ backup để không nén chồng.
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async function sourceFrom(destPath, backupSubdir) {
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const name = path.basename(destPath);
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const backupPath = path.join(BACKUP_DIR, backupSubdir, name);
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await ensureDir(path.dirname(backupPath));
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if (!(await exists(backupPath))) {
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await fs.copyFile(destPath, backupPath);
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}
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return backupPath;
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}
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async function optimizePanoramas() {
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const files = (await fs.readdir(PANO_DIR)).filter((f) => /\.jpe?g$/i.test(f)).sort();
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const lqip = {};
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for (const f of files) {
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const dest = path.join(PANO_DIR, f);
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const src = await sourceFrom(dest, "chua-thai-lac");
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const before = (await fs.stat(dest)).size;
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// JPEG (giữ cho next/image ở trang landing) — cũng hạ về 4096
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const jpgBuf = await sharp(src)
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.rotate()
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.resize({ width: PANO_WIDTH, withoutEnlargement: true })
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.jpeg({ quality: PANO_QUALITY, mozjpeg: true, progressive: true })
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.toBuffer();
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await fs.writeFile(dest, jpgBuf);
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// WebP (tour viewer nạp bản này) — cùng tên, đuôi .webp
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const webpName = f.replace(/\.jpe?g$/i, ".webp");
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const webpDest = path.join(PANO_DIR, webpName);
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const webpBuf = await sharp(src)
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.rotate()
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.resize({ width: PANO_WIDTH, withoutEnlargement: true })
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.webp({ quality: PANO_WEBP_QUALITY, effort: 6 })
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.toBuffer();
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await fs.writeFile(webpDest, webpBuf);
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// LQIP khóa theo path .webp (đúng path tour yêu cầu)
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const lqipBuf = await sharp(src).rotate().resize({ width: LQIP_WIDTH }).jpeg({ quality: 40 }).toBuffer();
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lqip["/images/chua-thai-lac/" + webpName] = "data:image/jpeg;base64," + lqipBuf.toString("base64");
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console.log(
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`${f}: ${fmt(before)} -> jpg ${fmt(jpgBuf.length)} | webp ${fmt(webpBuf.length)}`,
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);
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}
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return lqip;
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}
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async function optimizeModals() {
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for (const f of MODAL_FILES) {
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const dest = path.join(MODAL_DIR, f);
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if (!(await exists(dest))) continue;
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const src = await sourceFrom(dest, "modal");
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const before = (await fs.stat(dest)).size;
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const buf = await sharp(src).png({ compressionLevel: 9, palette: true, quality: 90, dither: 1 }).toBuffer();
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await fs.writeFile(dest, buf);
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console.log(`${f}: ${fmt(before)} -> ${fmt(buf.length)}`);
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}
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}
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async function writeLqip(lqip) {
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const entries = Object.entries(lqip)
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.map(([k, v]) => ` ${JSON.stringify(k)}: ${JSON.stringify(v)},`)
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.join("\n");
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const content =
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"// TỰ ĐỘNG SINH bởi scripts/optimize-images.mjs — KHÔNG sửa tay.\n" +
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"// Ảnh mờ tạm (blur-up/LQIP) base64 cho mỗi panorama, khoá theo đường dẫn ảnh.\n" +
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"export const lqip: Record<string, string> = {\n" +
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entries +
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"\n};\n";
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await fs.writeFile(LQIP_OUT, content);
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console.log("Wrote " + path.relative(ROOT, LQIP_OUT) + " (" + Object.keys(lqip).length + " entries)");
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}
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try {
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const lqip = await optimizePanoramas();
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await optimizeModals();
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await writeLqip(lqip);
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console.log("Done.");
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} catch (err) {
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console.error("optimize-images failed:", err);
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process.exit(1);
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}
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