From ba680211ca2e71be2dcf3dd7bd9a265f621ab77a Mon Sep 17 00:00:00 2001
From: CGsama <CGsama@outlook.com>
Date: Sat, 1 Jul 2023 23:58:36 -0400
Subject: [PATCH] Embedded all attachment, renotes and discussion history into
 rss feed content & improve title, and not generate feed for locked account

---
 packages/backend/src/server/web/feed.ts  | 111 ++++++++++++++++++-----
 packages/backend/src/server/web/index.ts |  28 ++++--
 2 files changed, 106 insertions(+), 33 deletions(-)

diff --git a/packages/backend/src/server/web/feed.ts b/packages/backend/src/server/web/feed.ts
index 9cbeb28ae1..1d24345024 100644
--- a/packages/backend/src/server/web/feed.ts
+++ b/packages/backend/src/server/web/feed.ts
@@ -4,34 +4,40 @@ import config from "@/config/index.js";
 import type { User } from "@/models/entities/user.js";
 import { Notes, DriveFiles, UserProfiles, Users } from "@/models/index.js";
 
-export default async function (user: User) {
+export default async function (user: User, threadDepth = 5, history = 20, noteintitle = false, renotes = true, replies = true) {
 	const author = {
 		link: `${config.url}/@${user.username}`,
-		name: user.name || user.username,
+		email: `${user.username}@${config.host}`,
+		name: user.name || user.username
 	};
 
 	const profile = await UserProfiles.findOneByOrFail({ userId: user.id });
 
+	const searchCriteria = {
+		userId: user.id,
+		visibility: In(['public', 'home']),
+	};
+
+	if (!renotes) {
+		searchCriteria.renoteId = IsNull();
+	}
+
+	if (!replies) {
+		searchCriteria.replyId = IsNull();
+	}
+
 	const notes = await Notes.find({
-		where: {
-			userId: user.id,
-			renoteId: IsNull(),
-			visibility: In(["public", "home"]),
-		},
+		where: searchCriteria,
 		order: { createdAt: -1 },
-		take: 20,
+		take: history,
 	});
 
 	const feed = new Feed({
 		id: author.link,
 		title: `${author.name} (@${user.username}@${config.host})`,
 		updated: notes[0].createdAt,
-		generator: "Calckey",
-		description: `${user.notesCount} Notes, ${
-			profile.ffVisibility === "public" ? user.followingCount : "?"
-		} Following, ${
-			profile.ffVisibility === "public" ? user.followersCount : "?"
-		} Followers${profile.description ? ` · ${profile.description}` : ""}`,
+		generator: 'Calckey',
+		description: `${user.notesCount} Notes, ${profile.ffVisibility === 'public' ? user.followingCount : '?'} Following, ${profile.ffVisibility === 'public' ? user.followersCount : '?'} Followers${profile.description ? ` · ${profile.description}` : ''}`,
 		link: author.link,
 		image: await Users.getAvatarUrl(user),
 		feedLinks: {
@@ -43,23 +49,78 @@ export default async function (user: User) {
 	});
 
 	for (const note of notes) {
-		const files =
-			note.fileIds.length > 0
-				? await DriveFiles.findBy({
-						id: In(note.fileIds),
-				  })
-				: [];
-		const file = files.find((file) => file.type.startsWith("image/"));
+		let contentStr = await noteToString(note, true);
+		let next = note.renoteId ? note.renoteId : note.replyId;
+		let depth = threadDepth;
+		while (depth > 0 && next) {
+			const finding = await findById(next);
+			contentStr += finding.text;
+			next = finding.next;
+			depth -= 1;
+		}
+
+		let title = `${author.name} `;
+		if (note.renoteId) {
+			title += 'renotes';
+		} else if (note.replyId) {
+			title += 'replies';
+		} else {
+			title += 'says';
+		}
+		if (noteintitle) {
+			const content = note.cw ?? note.text;
+			if (content) {
+				title += `: ${content}`;
+			} else {
+				title += 'something';
+			}
+		}
 
 		feed.addItem({
-			title: `New note by ${author.name}`,
+			title: title.replace(/[\x00-\x08\x0b\x0c\x0e-\x1f\x7f]/g, '').substring(0,100),
 			link: `${config.url}/notes/${note.id}`,
 			date: note.createdAt,
-			description: note.cw || undefined,
-			content: note.text || undefined,
-			image: file ? DriveFiles.getPublicUrl(file) || undefined : undefined,
+			description: note.cw ? note.cw.replace(/[\x00-\x08\x0b\x0c\x0e-\x1f\x7f]/g, '') : undefined,
+			content: contentStr.replace(/[\x00-\x08\x0b\x0c\x0e-\x1f\x7f]/g, '')
 		});
 	}
 
+	async function noteToString (note, isTheNote = false) {
+		const author = isTheNote ? null : await Users.findOneBy({ id: note.userId });
+		let outstr = author ? `${author.name}(@${author.username}@${author.host ? author.host : config.host}) ${(note.renoteId ? 'renotes' : (note.replyId ? 'replies' : 'says'))}: <br>` : '';
+		const files = note.fileIds.length > 0 ? await DriveFiles.findBy({
+			id: In(note.fileIds),
+		}) : [];
+		let fileEle = '';
+		for (const file of files) {
+			if (file.type.startsWith('image/')) {
+				fileEle += ` <br><img src="${DriveFiles.getPublicUrl(file)}">`;
+			} else if (file.type.startsWith('audio/')) {
+				fileEle += ` <br><audio controls src="${DriveFiles.getPublicUrl(file)}" type="${file.type}">`;
+			} else if (file.type.startsWith('video/')) {
+				fileEle += ` <br><video controls src="${DriveFiles.getPublicUrl(file)}" type="${file.type}">`;
+			} else {
+				fileEle += ` <br><a href="${DriveFiles.getPublicUrl(file)}" download="${file.name}">${file.name}</a>`;
+			}
+		}
+		outstr += `${note.cw ? note.cw + '<br>' : ''}${note.text || ''}${fileEle}`;
+		if (isTheNote) {
+			outstr += ` <span class="${(note.renoteId ? 'renote_note' : (note.replyId ? 'reply_note' : 'new_note'))} ${(fileEle.indexOf('img src') !== -1 ? 'with_img' : 'without_img')}"></span>`;
+		}
+		return outstr;
+	}
+
+	async function findById (id) {
+		let text = '';
+		let next = null;
+		const findings = await Notes.findOneBy({ id: id, visibility: In(['public', 'home']) });
+		if (findings) {
+			text += `<hr>`;
+			text += await noteToString(findings);
+			next = findings.renoteId ? findings.renoteId : findings.replyId;
+		}
+		return { text, next };
+	}
+
 	return feed;
 }
diff --git a/packages/backend/src/server/web/index.ts b/packages/backend/src/server/web/index.ts
index 55a125fac3..f54d1f495b 100644
--- a/packages/backend/src/server/web/index.ts
+++ b/packages/backend/src/server/web/index.ts
@@ -247,7 +247,7 @@ router.get("/api.json", async (ctx) => {
 	ctx.body = genOpenapiSpec();
 });
 
-const getFeed = async (acct: string) => {
+const getFeed = async (acct: string, threadDepth:string, historyCount:string, noteInTitle:string, noRenotes:string, noReplies:string) => {
 	const meta = await fetchMeta();
 	if (meta.privateMode) {
 		return;
@@ -257,14 +257,26 @@ const getFeed = async (acct: string) => {
 		usernameLower: username.toLowerCase(),
 		host: host ?? IsNull(),
 		isSuspended: false,
+		isLocked:false,
 	});
-
-	return user && (await packFeed(user));
+	if (!user) {
+		return;
+	}
+	let thread = parseInt(threadDepth, 10);
+	if (isNaN(thread) || thread < 0 || thread > 30) {
+		thread = 3;
+	}
+	let history = parseInt(historyCount, 10);
+	//cant be 0 here or it will get all posts
+	if (isNaN(history) || history <= 0 || history > 30) {
+		history = 20;
+	}
+	return user && await packFeed(user, thread, history, !isNaN(noteInTitle), isNaN(noRenotes), isNaN(noReplies));
 };
 
 // As the /@user[.json|.rss|.atom]/sub endpoint is complicated, we will use a regex to switch between them.
 const reUser = new RegExp(
-	"^/@(?<user>[^/]+?)(?:.(?<feed>json|rss|atom))?(?:/(?<sub>[^/]+))?$",
+	"^/@(?<user>[^/]+?)(?:.(?<feed>json|rss|atom)(?:\\?[^/]*)?)?(?:/(?<sub>[^/]+))?$",
 );
 router.get(reUser, async (ctx, next) => {
 	const groups = reUser.exec(ctx.originalUrl)?.groups;
@@ -275,7 +287,7 @@ router.get(reUser, async (ctx, next) => {
 
 	ctx.params = groups;
 
-	console.log(ctx, ctx.params);
+	//console.log(ctx, ctx.params, ctx.query);
 	if (groups.feed) {
 		if (groups.sub) {
 			await next();
@@ -301,7 +313,7 @@ router.get(reUser, async (ctx, next) => {
 
 // Atom
 const atomFeed: Router.Middleware = async (ctx) => {
-	const feed = await getFeed(ctx.params.user);
+	const feed = await getFeed(ctx.params.user, ctx.query.thread, ctx.query.history, ctx.query.noteintitle, ctx.query.norenotes, ctx.query.noreplies);
 
 	if (feed) {
 		ctx.set("Content-Type", "application/atom+xml; charset=utf-8");
@@ -313,7 +325,7 @@ const atomFeed: Router.Middleware = async (ctx) => {
 
 // RSS
 const rssFeed: Router.Middleware = async (ctx) => {
-	const feed = await getFeed(ctx.params.user);
+	const feed = await getFeed(ctx.params.user, ctx.query.thread, ctx.query.history, ctx.query.noteintitle, ctx.query.norenotes, ctx.query.noreplies);
 
 	if (feed) {
 		ctx.set("Content-Type", "application/rss+xml; charset=utf-8");
@@ -325,7 +337,7 @@ const rssFeed: Router.Middleware = async (ctx) => {
 
 // JSON
 const jsonFeed: Router.Middleware = async (ctx) => {
-	const feed = await getFeed(ctx.params.user);
+	const feed = await getFeed(ctx.params.user, ctx.query.thread, ctx.query.history, ctx.query.noteintitle, ctx.query.norenotes, ctx.query.noreplies);
 
 	if (feed) {
 		ctx.set("Content-Type", "application/json; charset=utf-8");