Synchronisation du contenu avec lemmy
This commit is contained in:
741
tools/sync_lemmy_comments.js
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741
tools/sync_lemmy_comments.js
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@@ -0,0 +1,741 @@
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#!/usr/bin/env node
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const crypto = require("node:crypto");
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const fs = require("node:fs");
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const path = require("node:path");
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const sharp = require("sharp");
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const { LemmyHttp } = require("lemmy-js-client");
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const { collectBundles } = require("./lib/content");
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const { loadToolsConfig } = require("./lib/config");
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const { parseFrontmatterDate } = require("./lib/datetime");
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const { readFrontmatterFile, writeFrontmatterFile } = require("./lib/frontmatter");
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const CONTENT_ROOT = path.join(__dirname, "..", "content");
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const FRONTMATTER_COMMENT_FIELD = "comments_url";
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const FRONTMATTER_COVER_FIELD = "cover";
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const MAX_COMMUNITY_NAME_LENGTH = 20;
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const MIN_COMMUNITY_NAME_LENGTH = 3;
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const MAX_THUMBNAIL_WIDTH = 320;
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const MAX_THUMBNAIL_HEIGHT = 240;
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const THUMBNAIL_QUALITY = 82;
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const THUMBNAIL_CACHE_DIR = path.join(__dirname, "cache", "lemmy_thumbnails");
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const THUMBNAIL_FORMAT = "png";
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main().then(
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() => {
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process.exit(0);
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},
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(error) => {
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console.error(`❌ Synchronisation Lemmy interrompue : ${error.message}`);
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process.exit(1);
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}
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);
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/**
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* Point d'entrée principal : charge la configuration, collecte les articles et orchestre la synchronisation.
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*/
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async function main() {
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const toolsConfig = await loadToolsConfig(path.join(__dirname, "config", "config.json"));
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const lemmyConfig = normalizeLemmyConfig(toolsConfig.lemmy);
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const client = await createLemmyClient(lemmyConfig);
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const bundles = await collectBundles(CONTENT_ROOT);
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const articles = selectArticles(bundles);
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if (articles.length === 0) {
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console.log("Aucun article à synchroniser.");
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return;
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}
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for (const article of articles) {
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await synchroniseArticle(article, lemmyConfig, client);
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}
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}
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/**
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* Valide et normalise la configuration Lemmy issue des fichiers et variables d'environnement.
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* @param {object} rawConfig Configuration telle que chargée par loadToolsConfig.
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* @returns {object} Configuration prête à l'emploi pour Lemmy.
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*/
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function normalizeLemmyConfig(rawConfig) {
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if (!rawConfig || typeof rawConfig !== "object") {
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throw new Error("La configuration Lemmy est manquante (tools/config/config.json).");
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}
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const instanceUrl = normalizeUrl(rawConfig.instanceUrl);
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if (!instanceUrl) {
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throw new Error("lemmy.instanceUrl doit être renseigné dans tools/config/config.json ou via l'environnement.");
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}
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const siteUrl = normalizeUrl(rawConfig.siteUrl);
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if (!siteUrl) {
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throw new Error("lemmy.siteUrl doit être défini pour construire les URLs des articles.");
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}
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const auth = rawConfig.auth || {};
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const hasJwt = typeof auth.jwt === "string" && auth.jwt.trim().length > 0;
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const hasCredentials =
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typeof auth.username === "string" &&
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auth.username.trim().length > 0 &&
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typeof auth.password === "string" &&
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auth.password.length > 0;
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if (!hasJwt && !hasCredentials) {
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throw new Error("lemmy.auth.jwt ou lemmy.auth.username + lemmy.auth.password doivent être fournis.");
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}
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const prefixOverrides = buildOverrides(rawConfig.community?.prefixOverrides || {});
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const descriptionTemplate =
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typeof rawConfig.community?.descriptionTemplate === "string" &&
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rawConfig.community.descriptionTemplate.trim().length > 0
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? rawConfig.community.descriptionTemplate.trim()
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: "Espace dédié aux échanges autour de {{path}}.";
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return {
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instanceUrl,
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siteUrl,
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auth: {
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jwt: hasJwt ? auth.jwt.trim() : null,
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username: hasCredentials ? auth.username.trim() : null,
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password: hasCredentials ? auth.password : null,
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},
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community: {
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visibility: rawConfig.community?.visibility || "Public",
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nsfw: rawConfig.community?.nsfw === true,
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descriptionTemplate,
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prefixOverrides,
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},
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};
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}
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/**
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* Crée un client Lemmy authentifié via JWT ou couple utilisateur/mot de passe.
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* @param {object} lemmyConfig Configuration normalisée.
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* @returns {Promise<LemmyHttp>} Client prêt pour les appels API.
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*/
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async function createLemmyClient(lemmyConfig) {
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const client = new LemmyHttp(lemmyConfig.instanceUrl);
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if (lemmyConfig.auth.jwt) {
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client.setHeaders({ Authorization: `Bearer ${lemmyConfig.auth.jwt}` });
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return client;
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}
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const loginResponse = await client.login({
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username_or_email: lemmyConfig.auth.username,
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password: lemmyConfig.auth.password,
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});
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client.setHeaders({ Authorization: `Bearer ${loginResponse.jwt}` });
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return client;
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}
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/**
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* Prépare la liste des articles à synchroniser : frontmatter présent, date valide, comments_url absent.
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* Le tri est effectué par date croissante, puis par chemin en cas d'égalité.
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* @param {Array<object>} bundles Bundles collectés sous content/.
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* @returns {Array<object>} Articles prêts pour la synchronisation.
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*/
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function selectArticles(bundles) {
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const articles = [];
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for (const bundle of bundles) {
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const frontmatter = readFrontmatterFile(bundle.indexPath);
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if (!frontmatter) {
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console.warn(`⚠️ ${bundle.relativePath} : frontmatter introuvable, article ignoré.`);
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continue;
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}
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const existingComments =
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typeof frontmatter.data?.[FRONTMATTER_COMMENT_FIELD] === "string"
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? frontmatter.data[FRONTMATTER_COMMENT_FIELD].trim()
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: "";
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if (existingComments) {
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continue;
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}
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const publication = parseFrontmatterDate(frontmatter.data?.date);
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if (!publication) {
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console.warn(`⚠️ ${bundle.relativePath} : date absente ou invalide, article ignoré.`);
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continue;
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}
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const title = typeof frontmatter.data?.title === "string" ? frontmatter.data.title.trim() : "";
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if (!title) {
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console.warn(`⚠️ ${bundle.relativePath} : titre manquant, article ignoré.`);
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continue;
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}
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articles.push({
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bundle,
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frontmatter,
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publication,
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title,
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});
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}
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articles.sort((a, b) => {
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const diff = a.publication.toMillis() - b.publication.toMillis();
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if (diff !== 0) {
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return diff;
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}
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return a.bundle.relativePath.localeCompare(b.bundle.relativePath);
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});
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return articles;
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}
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/**
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* Synchronise un article unique : communauté, miniature, post Lemmy et mise à jour du frontmatter.
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* @param {object} article Article préparé par selectArticles.
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* @param {object} lemmyConfig Configuration Lemmy.
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* @param {LemmyHttp} client Client Lemmy.
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*/
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async function synchroniseArticle(article, lemmyConfig, client) {
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const communityDescriptor = buildCommunityDescriptor(article.bundle.parts, lemmyConfig.community);
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const community = await ensureCommunity(client, communityDescriptor, lemmyConfig.community);
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const coverPath = resolveCoverPath(article.bundle, article.frontmatter.data);
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let thumbnailUrl = null;
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let thumbnailCachePath = null;
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if (coverPath) {
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const coverRelative = path.relative(process.cwd(), coverPath);
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console.log(`Préparation de ${article.bundle.relativePath} (couverture : ${coverRelative})`);
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const thumbnail = await buildThumbnailAsset(coverPath, article.bundle);
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thumbnailCachePath = thumbnail.cachePath;
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console.log(`Miniature générée : ${thumbnail.cachePath}`);
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thumbnailUrl = await uploadThumbnail(client, thumbnail.buffer, {
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cachePath: thumbnail.cachePath,
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bundlePath: article.bundle.relativePath,
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});
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} else {
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console.warn(
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`⚠️ ${article.bundle.relativePath} : aucune couverture exploitable, création du post sans miniature.`
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);
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}
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const articleUrl = buildArticleUrl(lemmyConfig.siteUrl, article.bundle.parts);
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const post = await ensurePost(client, community, {
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title: article.title,
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articleUrl,
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thumbnailUrl,
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});
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const commentsUrl = buildCommentsUrl(lemmyConfig.instanceUrl, post.id);
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article.frontmatter.data[FRONTMATTER_COMMENT_FIELD] = commentsUrl;
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writeFrontmatterFile(article.bundle.indexPath, article.frontmatter.data, article.frontmatter.body);
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cleanupThumbnail(thumbnailCachePath);
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console.log(`✅ ${article.bundle.relativePath} → ${community.name}`);
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}
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/**
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* Construit l'URL publique d'un article à partir de son chemin Hugo.
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* @param {string} siteUrl Domaine du site.
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* @param {string[]} parts Segments du chemin du bundle.
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* @returns {string} URL finale.
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*/
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function buildArticleUrl(siteUrl, parts) {
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const relative = parts.join("/");
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return `${siteUrl}/${relative}`;
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}
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/**
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* Transforme les segments de chemin en nom et titre de communauté Lemmy.
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* @param {string[]} parts Segments du chemin du bundle.
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* @param {object} communityConfig Configuration de la section community.
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* @returns {{ name: string, title: string, description: string }}
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*/
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function buildCommunityDescriptor(parts, communityConfig) {
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const intermediate = stripDateSegments(parts.slice(0, -1));
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if (intermediate.length === 0) {
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throw new Error(`Impossible de déduire une communauté depuis ${parts.join("/")}.`);
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}
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const normalized = intermediate.map((segment) => applyOverride(segment, communityConfig.prefixOverrides));
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const sanitized = normalized.map((segment) => sanitizeSegment(segment)).filter(Boolean);
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if (sanitized.length === 0) {
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throw new Error(`Les segments ${intermediate.join("/")} sont invalides pour une communauté.`);
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}
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const name = enforceCommunityLength(sanitized);
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if (name.length < MIN_COMMUNITY_NAME_LENGTH) {
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throw new Error(`Nom de communauté trop court pour ${parts.join("/")}.`);
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}
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const title = normalized.map((segment) => capitalizeLabel(segment)).join(" / ");
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const labelPath = normalized.join("/");
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const description = buildCommunityDescription(communityConfig.descriptionTemplate, labelPath);
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return { name, title, description };
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}
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/**
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* Supprime les segments correspondant à un pattern année/mois/jour consécutif.
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* @param {string[]} segments Segments intermédiaires du chemin.
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* @returns {string[]} Segments épurés des dates.
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*/
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function stripDateSegments(segments) {
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const filtered = [];
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let index = 0;
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while (index < segments.length) {
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if (
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isYearSegment(segments[index]) &&
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isMonthSegment(segments[index + 1]) &&
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isDaySegment(segments[index + 2])
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) {
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index += 3;
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continue;
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}
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filtered.push(segments[index]);
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index += 1;
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}
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return filtered;
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}
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/**
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* Indique si un segment représente une année sur 4 chiffres.
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* @param {string|undefined} value Segment à tester.
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* @returns {boolean} true si le segment est une année.
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*/
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function isYearSegment(value) {
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if (typeof value !== "string") {
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return false;
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}
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return /^\d{4}$/.test(value);
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}
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/**
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* Indique si un segment représente un mois numérique valide.
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* @param {string|undefined} value Segment à tester.
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* @returns {boolean} true si le segment est un mois.
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*/
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function isMonthSegment(value) {
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if (typeof value !== "string") {
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return false;
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}
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if (!/^\d{1,2}$/.test(value)) {
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return false;
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}
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const numeric = Number.parseInt(value, 10);
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return numeric >= 1 && numeric <= 12;
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}
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/**
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* Indique si un segment représente un jour numérique valide.
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* @param {string|undefined} value Segment à tester.
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* @returns {boolean} true si le segment est un jour.
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*/
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function isDaySegment(value) {
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if (typeof value !== "string") {
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return false;
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}
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if (!/^\d{1,2}$/.test(value)) {
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return false;
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}
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const numeric = Number.parseInt(value, 10);
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return numeric >= 1 && numeric <= 31;
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}
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/**
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* Applique une table de remplacements sur un segment en respectant la casse initiale.
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* @param {string} segment Segment brut.
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* @param {Record<string, string>} overrides Table de substitutions.
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* @returns {string} Segment éventuellement remplacé.
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*/
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function applyOverride(segment, overrides) {
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const lookup = segment.toLowerCase();
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if (overrides[lookup]) {
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return overrides[lookup];
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}
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return segment;
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}
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/**
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* Nettoie un segment pour l'utiliser dans un nom de communauté Lemmy.
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* @param {string} segment Valeur brute.
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* @returns {string} Segment assaini.
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*/
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function sanitizeSegment(segment) {
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return segment
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.normalize("NFKD")
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.replace(/[\u0300-\u036f]/g, "")
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.toLowerCase()
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.replace(/[^a-z0-9]+/g, "_")
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.replace(/_{2,}/g, "_")
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.replace(/^_|_$/g, "");
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}
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/**
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* Garantit que le nom de communauté respecte la longueur imposée par Lemmy.
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* @param {string[]} segments Segments déjà assainis.
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* @returns {string} Nom final.
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*/
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function enforceCommunityLength(segments) {
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const reduced = segments.map((segment) => segment.slice(0, MAX_COMMUNITY_NAME_LENGTH));
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let current = reduced.join("_");
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if (current.length <= MAX_COMMUNITY_NAME_LENGTH) {
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return current;
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}
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const working = [...reduced];
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let cursor = working.length - 1;
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while (current.length > MAX_COMMUNITY_NAME_LENGTH && cursor >= 0) {
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if (working[cursor].length > 1) {
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working[cursor] = working[cursor].slice(0, -1);
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current = working.join("_");
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continue;
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}
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cursor -= 1;
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}
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if (current.length <= MAX_COMMUNITY_NAME_LENGTH) {
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return current;
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}
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const compactSource = segments.join("_");
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const compact = compactSource.replace(/_/g, "").slice(0, Math.max(1, MAX_COMMUNITY_NAME_LENGTH - 5));
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const hash = crypto.createHash("sha1").update(compactSource).digest("hex");
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const suffixLength = Math.max(2, MAX_COMMUNITY_NAME_LENGTH - compact.length - 1);
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const suffix = hash.slice(0, suffixLength);
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return `${compact}_${suffix}`;
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}
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/**
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* Construit un titre lisible pour la communauté.
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* @param {string} value Segment brut.
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* @returns {string} Version capitalisée.
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*/
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function capitalizeLabel(value) {
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const spaced = value.replace(/[-_]+/g, " ").replace(/\s+/g, " ").trim();
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if (!spaced) {
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return value;
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}
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return spaced.charAt(0).toUpperCase() + spaced.slice(1);
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}
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/**
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* Crée une description de communauté à partir du template configuré.
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* @param {string} template Modèle issu de la configuration.
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* @param {string} labelPath Chemin textuel des segments.
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* @returns {string} Description finale.
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*/
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function buildCommunityDescription(template, labelPath) {
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if (template.includes("{{path}}")) {
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return template.replace("{{path}}", labelPath);
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}
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return `${template} (${labelPath})`;
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}
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/**
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* Génère une miniature et la sauvegarde sur disque pour inspection si besoin.
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* @param {string} coverPath Chemin absolu de l'image source.
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* @param {object} bundle Bundle concerné.
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* @returns {Promise<{ buffer: Buffer, cachePath: string }>} Miniature prête à l'emploi.
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*/
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async function buildThumbnailAsset(coverPath, bundle) {
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const buffer = await createThumbnail(coverPath, THUMBNAIL_FORMAT);
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const cachePath = writeThumbnailToCache(buffer, bundle, coverPath, THUMBNAIL_FORMAT);
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return { buffer, cachePath };
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}
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/**
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* Recherche une communauté par nom, et la crée si nécessaire.
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* @param {LemmyHttp} client Client Lemmy.
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* @param {object} descriptor Nom, titre et description attendus.
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* @param {object} communityConfig Paramètres nsfw/visibilité.
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* @returns {Promise<{ id: number, name: string }>} Communauté finalisée.
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||||
*/
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||||
async function ensureCommunity(client, descriptor, communityConfig) {
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const existing = await searchCommunity(client, descriptor.name);
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||||
if (existing) {
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||||
return { id: existing.community.id, name: existing.community.name };
|
||||
}
|
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const response = await client.createCommunity({
|
||||
name: descriptor.name,
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||||
title: descriptor.title,
|
||||
description: descriptor.description,
|
||||
nsfw: communityConfig.nsfw,
|
||||
visibility: communityConfig.visibility,
|
||||
});
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||||
return {
|
||||
id: response.community_view.community.id,
|
||||
name: response.community_view.community.name,
|
||||
};
|
||||
}
|
||||
|
||||
/**
|
||||
* Recherche une communauté précise via l'API de recherche.
|
||||
* @param {LemmyHttp} client Client Lemmy.
|
||||
* @param {string} name Nom recherché.
|
||||
* @returns {Promise<object|null>} Vue de communauté ou null.
|
||||
*/
|
||||
async function searchCommunity(client, name) {
|
||||
const response = await client.search({ q: name, type_: "Communities", limit: 50 });
|
||||
if (!response.communities || response.communities.length === 0) {
|
||||
return null;
|
||||
}
|
||||
return response.communities.find((communityView) => communityView.community.name === name) || null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Construit la miniature à partir de l'image de couverture.
|
||||
* @param {string} absolutePath Chemin absolu vers l'image source.
|
||||
* @param {string} format Format de sortie (jpeg|png).
|
||||
* @returns {Promise<Buffer>} Données JPEG redimensionnées.
|
||||
*/
|
||||
async function createThumbnail(absolutePath, format = "jpeg") {
|
||||
const base = sharp(absolutePath).resize({
|
||||
width: MAX_THUMBNAIL_WIDTH,
|
||||
height: MAX_THUMBNAIL_HEIGHT,
|
||||
fit: "inside",
|
||||
withoutEnlargement: true,
|
||||
});
|
||||
|
||||
if (format === "png") {
|
||||
return base
|
||||
.png({
|
||||
compressionLevel: 9,
|
||||
palette: true,
|
||||
effort: 5,
|
||||
})
|
||||
.toBuffer();
|
||||
}
|
||||
|
||||
return base.jpeg({ quality: THUMBNAIL_QUALITY, mozjpeg: true }).toBuffer();
|
||||
}
|
||||
|
||||
/**
|
||||
* Téléverse une miniature vers Lemmy et retourne l'URL publique.
|
||||
* @param {LemmyHttp} client Client Lemmy.
|
||||
* @param {Buffer} thumbnailBuffer Données de l'image.
|
||||
* @param {object} info Informations de contexte pour les erreurs.
|
||||
* @returns {Promise<string>} URL de la miniature hébergée par Lemmy.
|
||||
*/
|
||||
async function uploadThumbnail(client, thumbnailBuffer, info) {
|
||||
const label = info?.bundlePath ? ` pour ${info.bundlePath}` : "";
|
||||
const location = info?.cachePath ? ` (miniature : ${info.cachePath})` : "";
|
||||
|
||||
const upload = await client.uploadImage({ image: thumbnailBuffer }).catch((error) => {
|
||||
const reason = typeof error?.message === "string" && error.message.trim() ? error.message : "erreur inconnue";
|
||||
throw new Error(`Téléversement Lemmy échoué${label}${location} : ${reason}`);
|
||||
});
|
||||
|
||||
if (!upload) {
|
||||
throw new Error(`Miniature rejetée${label}${location} : réponse vide`);
|
||||
}
|
||||
if (upload.error) {
|
||||
throw new Error(`Miniature rejetée${label}${location} : ${upload.error}`);
|
||||
}
|
||||
if (upload.msg !== "ok" || !upload.url) {
|
||||
const details = JSON.stringify(upload);
|
||||
throw new Error(`Miniature rejetée${label}${location} : réponse inattendue ${details}`);
|
||||
}
|
||||
return upload.url;
|
||||
}
|
||||
|
||||
/**
|
||||
* Crée ou met à jour un post Lemmy correspondant à l'article.
|
||||
* @param {LemmyHttp} client Client Lemmy.
|
||||
* @param {{ id: number, name: string }} community Communauté cible.
|
||||
* @param {{ title: string, articleUrl: string, thumbnailUrl: string|null }} payload Données du post.
|
||||
* @returns {Promise<{ id: number }>} Post final.
|
||||
*/
|
||||
async function ensurePost(client, community, payload) {
|
||||
const existing = await searchPostByUrl(client, community, payload.articleUrl);
|
||||
if (existing) {
|
||||
if (shouldUpdatePost(existing, payload.title, payload.thumbnailUrl, payload.articleUrl)) {
|
||||
const edited = await client.editPost({
|
||||
post_id: existing.post.id,
|
||||
name: payload.title,
|
||||
url: payload.articleUrl,
|
||||
custom_thumbnail: payload.thumbnailUrl || undefined,
|
||||
});
|
||||
return { id: edited.post_view.post.id };
|
||||
}
|
||||
return { id: existing.post.id };
|
||||
}
|
||||
|
||||
const response = await client.createPost({
|
||||
name: payload.title,
|
||||
community_id: community.id,
|
||||
url: payload.articleUrl,
|
||||
custom_thumbnail: payload.thumbnailUrl || undefined,
|
||||
});
|
||||
return { id: response.post_view.post.id };
|
||||
}
|
||||
|
||||
/**
|
||||
* Vérifie la nécessité d'une mise à jour du post existant.
|
||||
* @param {object} postView Post obtenu par recherche.
|
||||
* @param {string} expectedTitle Titre attendu.
|
||||
* @param {string|null} thumbnailUrl URL attendue pour la miniature.
|
||||
* @param {string} articleUrl URL de l'article.
|
||||
* @returns {boolean} true si une édition est requise.
|
||||
*/
|
||||
function shouldUpdatePost(postView, expectedTitle, thumbnailUrl, articleUrl) {
|
||||
const currentTitle = typeof postView.post.name === "string" ? postView.post.name : "";
|
||||
const currentUrl = typeof postView.post.url === "string" ? postView.post.url : "";
|
||||
const currentThumbnail =
|
||||
typeof postView.post.thumbnail_url === "string" ? postView.post.thumbnail_url : null;
|
||||
|
||||
if (currentTitle !== expectedTitle) {
|
||||
return true;
|
||||
}
|
||||
if (currentUrl !== articleUrl) {
|
||||
return true;
|
||||
}
|
||||
if (thumbnailUrl && currentThumbnail !== thumbnailUrl) {
|
||||
return true;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* Cherche un post existant pointant vers l'URL de l'article dans la communauté donnée.
|
||||
* @param {LemmyHttp} client Client Lemmy.
|
||||
* @param {{ id: number, name: string }} community Communauté cible.
|
||||
* @param {string} articleUrl URL Hugo recherchée.
|
||||
* @returns {Promise<object|null>} PostView correspondant ou null.
|
||||
*/
|
||||
async function searchPostByUrl(client, community, articleUrl) {
|
||||
const response = await client.search({
|
||||
q: articleUrl,
|
||||
type_: "Url",
|
||||
community_name: community.name,
|
||||
limit: 50,
|
||||
});
|
||||
if (!response.posts || response.posts.length === 0) {
|
||||
return null;
|
||||
}
|
||||
return response.posts.find(
|
||||
(postView) =>
|
||||
typeof postView.post.url === "string" &&
|
||||
postView.post.url.trim() === articleUrl &&
|
||||
postView.post.community_id === community.id
|
||||
) || null;
|
||||
}
|
||||
|
||||
/**
|
||||
* Construit l'URL publique des commentaires Lemmy.
|
||||
* @param {string} instanceUrl Domaine de l'instance Lemmy.
|
||||
* @param {number} postId Identifiant du post.
|
||||
* @returns {string} URL des commentaires.
|
||||
*/
|
||||
function buildCommentsUrl(instanceUrl, postId) {
|
||||
return `${instanceUrl}/post/${postId}`;
|
||||
}
|
||||
|
||||
/**
|
||||
* Détermine le chemin absolu vers l'image de couverture déclarée.
|
||||
* @param {object} bundle Bundle en cours de traitement.
|
||||
* @param {object} frontmatterData Données du frontmatter.
|
||||
* @returns {string|null} Chemin absolu ou null si inexistant.
|
||||
*/
|
||||
function resolveCoverPath(bundle, frontmatterData) {
|
||||
const cover =
|
||||
typeof frontmatterData?.[FRONTMATTER_COVER_FIELD] === "string"
|
||||
? frontmatterData[FRONTMATTER_COVER_FIELD].trim()
|
||||
: "";
|
||||
if (!cover) {
|
||||
return null;
|
||||
}
|
||||
const normalized = cover.replace(/^\.?\//, "").replace(/\/{2,}/g, "/");
|
||||
if (!normalized) {
|
||||
return null;
|
||||
}
|
||||
const absolute = path.join(bundle.dir, normalized);
|
||||
if (!fs.existsSync(absolute)) {
|
||||
console.warn(`⚠️ ${bundle.relativePath} : couverture ${normalized} introuvable.`);
|
||||
return null;
|
||||
}
|
||||
const stats = fs.statSync(absolute);
|
||||
if (!stats.isFile()) {
|
||||
console.warn(`⚠️ ${bundle.relativePath} : ${normalized} n'est pas un fichier image.`);
|
||||
return null;
|
||||
}
|
||||
return absolute;
|
||||
}
|
||||
|
||||
/**
|
||||
* Nettoie les URLs en supprimant les slashs terminaux et espaces superflus.
|
||||
* @param {string|null} url URL brute.
|
||||
* @returns {string|null} URL normalisée ou null.
|
||||
*/
|
||||
function normalizeUrl(url) {
|
||||
if (typeof url !== "string") {
|
||||
return null;
|
||||
}
|
||||
const trimmed = url.trim();
|
||||
if (!trimmed) {
|
||||
return null;
|
||||
}
|
||||
return trimmed.replace(/\/+$/, "");
|
||||
}
|
||||
|
||||
/**
|
||||
* Transforme l'objet de remplacements brut en table normalisée.
|
||||
* @param {Record<string, string>} overrides Remplacements issus de la configuration.
|
||||
* @returns {Record<string, string>} Table prête à l'emploi.
|
||||
*/
|
||||
function buildOverrides(overrides) {
|
||||
const table = {};
|
||||
for (const [key, value] of Object.entries(overrides)) {
|
||||
if (typeof key !== "string" || typeof value !== "string") {
|
||||
continue;
|
||||
}
|
||||
const normalizedKey = key.trim().toLowerCase();
|
||||
const normalizedValue = value.trim();
|
||||
if (normalizedKey && normalizedValue) {
|
||||
table[normalizedKey] = normalizedValue;
|
||||
}
|
||||
}
|
||||
return table;
|
||||
}
|
||||
|
||||
/**
|
||||
* Écrit la miniature générée sur disque dans tools/cache pour inspection.
|
||||
* @param {Buffer} buffer Miniature prête.
|
||||
* @param {object} bundle Bundle concerné.
|
||||
* @param {string} coverPath Chemin de la couverture d'origine.
|
||||
* @param {string} format Format de la miniature (jpeg|png).
|
||||
* @returns {string} Chemin du fichier écrit.
|
||||
*/
|
||||
function writeThumbnailToCache(buffer, bundle, coverPath, format) {
|
||||
const targetPath = computeThumbnailCachePath(bundle, coverPath, format);
|
||||
fs.mkdirSync(path.dirname(targetPath), { recursive: true });
|
||||
fs.writeFileSync(targetPath, buffer);
|
||||
return targetPath;
|
||||
}
|
||||
|
||||
/**
|
||||
* Supprime la miniature mise en cache une fois le post Lemmy créé.
|
||||
* @param {string|null} cachePath Chemin éventuel de la miniature.
|
||||
*/
|
||||
function cleanupThumbnail(cachePath) {
|
||||
if (!cachePath) {
|
||||
return;
|
||||
}
|
||||
if (fs.existsSync(cachePath)) {
|
||||
fs.unlinkSync(cachePath);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Construit un nom de fichier stable et assaini pour la miniature en cache.
|
||||
* @param {object} bundle Bundle concerné.
|
||||
* @param {string} coverPath Chemin de la couverture.
|
||||
* @param {string} format Format de la miniature.
|
||||
* @returns {string} Chemin cible dans tools/cache/lemmy_thumbnails.
|
||||
*/
|
||||
function computeThumbnailCachePath(bundle, coverPath, format = "jpeg") {
|
||||
const base = `${bundle.relativePath}__${path.basename(coverPath)}`;
|
||||
const safeBase = base
|
||||
.replace(/[^a-zA-Z0-9._-]+/g, "_")
|
||||
.replace(/_{2,}/g, "_")
|
||||
.replace(/^_|_$/g, "");
|
||||
const hash = crypto.createHash("sha1").update(base).digest("hex").slice(0, 10);
|
||||
const extension = format === "png" ? "png" : "jpg";
|
||||
const name = `${safeBase || "thumbnail"}_${hash}.${extension}`;
|
||||
return path.join(THUMBNAIL_CACHE_DIR, name);
|
||||
}
|
||||
Reference in New Issue
Block a user