google-photos-migrate/esm/meta/index-meta-files.js

A tool to fix EXIF data and recover filenames from a Google Photos takeout.

import { readFile } from 'fs/promises';
import { extname } from 'path';
import { editedSuffices } from '../config/langs.js';
import { walkDir } from '../fs/walk-dir.js';
const MAX_BASE_LENGTH = 51;
export async function indexJsonFiles(googleDir) {
    const titleJsonMap = new Map();
    for await (const jsonPath of walkDir(googleDir)) {
        if (!jsonPath.endsWith('.json'))
            continue;
        let title;
        try {
            const data = JSON.parse((await readFile(jsonPath)).toString());
            title = data.title;
        }
        catch (e) { }
        if (typeof title !== 'string')
            continue;
        const potTitles = new Set();
        const ext = extname(title);
        const woExt = title.slice(0, -ext.length);
        const maxWoExt = MAX_BASE_LENGTH - ext.length;
        potTitles.add(woExt.slice(0, maxWoExt) + ext);
        for (const suffix of editedSuffices) {
            potTitles.add((woExt + `-${suffix}`).slice(0, maxWoExt) + ext);
        }
        for (const potTitle of potTitles) {
            const jsonPaths = titleJsonMap.get(potTitle) ?? [];
            jsonPaths.push(jsonPath);
            titleJsonMap.set(potTitle, jsonPaths);
        }
    }
    return titleJsonMap;
}