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+19
LICENSE-MIT.txt
···11+MIT License
22+33+Permission is hereby granted, free of charge, to any person obtaining a copy
44+of this software and associated documentation files (the "Software"), to deal
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+7
LICENSE.txt
···11+Dual MIT/Apache-2.0 License
22+33+Copyright (c) 2025 gbl08ma and Contributors
44+55+Except as otherwise noted in individual files, this software is licensed under the MIT license (<http://opensource.org/licenses/MIT>), or the Apache License, Version 2.0 (<http://www.apache.org/licenses/LICENSE-2.0>).
66+77+Downstream projects and end users may chose either license individually, or both together, at their discretion. The motivation for this dual-licensing is the additional software patent assurance provided by Apache 2.0.
+38
README.md
···11+# pdslabeler
22+33+This is a Bluesky labeler that labels accounts hosted on (most) Personal Data Servers (PDS) not operated by Bluesky PBC (and thus, "Independent").
44+55+If you just want to use it, [subscribe to it](https://bsky.app/profile/pds.labeler.tny.im/). This instance of the labeler is developed and operated by [gbl08ma](https://bsky.app/profile/gbl08ma.com/); its account is hosted on the PDS that I operate (very on-brand).
66+77+Please bear with me as I'm not neither a TypeScript nor ATProto major. This was put together over three evenings. Potential future employers, this is definitely not the best code nor the best architecture I can muster, but if my alleged professional experience is any indication, this is already better than most of the code at your company anyway (for one, despite having no tests and no CI/CD, someone actually tested it manually, there was a deployment plan, and there was a test environment - the luxury!).
88+99+## Developing
1010+1111+To install dependencies:
1212+1313+```bash
1414+bun install
1515+```
1616+1717+To run:
1818+1919+```bash
2020+bun run index.ts
2121+```
2222+2323+This project was created using `bun init` in bun v1.2.22. [Bun](https://bun.com) alleges to be a fast all-in-one JavaScript runtime. It's so fast it won't run unless your CPU supports AVX2 or (if you use the baseline binary) SSE4.2. The contributors to this project are not affiliated with Bun, in case you couldn't tell.
2424+2525+## Deploying
2626+2727+To actually deploy the labeler you'll need an account that's set up for it, and a hostname where the labeler server can be reached.
2828+2929+Read https://skyware.js.org/guides/labeler/introduction/getting-started/ to get an idea of what is necessary.
3030+3131+## License
3232+3333+This project is dual-licensed under MIT and Apache 2.0 terms:
3434+3535+- MIT license (LICENSE-MIT.txt or http://opensource.org/licenses/MIT)
3636+- Apache License, Version 2.0, (LICENSE-APACHE.txt or http://www.apache.org/licenses/LICENSE-2.0)
3737+3838+Downstream projects and end users may choose either license individually, or both together, at their discretion. The motivation for this dual-licensing is the additional software patent assurance provided by Apache 2.0.
+93
activeLabelsStorage.ts
···11+import { LabelerServer } from "@skyware/labeler";
22+33+export class ActiveLabelsStorage {
44+ private db: typeof LabelerServer.prototype.db;
55+66+ /**
77+ * Promise that resolves when database initialization is complete.
88+ * This should be awaited before any database operations.
99+ */
1010+ private readonly dbInitLock?: Promise<void>;
1111+1212+ constructor(db: typeof this.db) {
1313+ this.db = db;
1414+1515+ this.dbInitLock = this.initializeDatabase();
1616+ }
1717+1818+ async initializeDatabase() {
1919+ await this.db.execute(`
2020+ CREATE TABLE IF NOT EXISTS active_labels (
2121+ uri TEXT NOT NULL,
2222+ val TEXT NOT NULL,
2323+ PRIMARY KEY (uri, val)
2424+ );
2525+ `);
2626+ }
2727+2828+ async computeLabelsDiff(uri: string, desiredOutcome: string[]): Promise<{
2929+ labelsToAdd: string[],
3030+ labelsToNegate: string[],
3131+ }> {
3232+ await this.dbInitLock;
3333+3434+ const diff: {
3535+ labelsToAdd: string[],
3636+ labelsToNegate: string[],
3737+ } = {
3838+ labelsToAdd: [],
3939+ labelsToNegate: [],
4040+ };
4141+4242+ const desiredOutcomeSet = new Set(desiredOutcome);
4343+4444+ const result = await this.db.execute({
4545+ sql: `
4646+ SELECT uri, val FROM active_labels
4747+ WHERE uri = ?
4848+ `,
4949+ args: [uri],
5050+ });
5151+5252+ const activeLabels = result.rows.map((row) => row.val as string);
5353+ const activeLabelSet = new Set(activeLabels);
5454+5555+ for (const label of activeLabels) {
5656+ if (!desiredOutcomeSet.has(label)) {
5757+ diff.labelsToNegate.push(label);
5858+ }
5959+ }
6060+6161+ for (const label of desiredOutcome) {
6262+ if (!activeLabelSet.has(label)) {
6363+ diff.labelsToAdd.push(label);
6464+ }
6565+ }
6666+6767+ return diff;
6868+ }
6969+7070+ async registerLabelActivation(uri: string, val: string) {
7171+ const result = await this.db.execute({
7272+ sql: `
7373+ INSERT INTO active_labels (uri, val)
7474+ VALUES (?, ?)
7575+ `,
7676+ args: [uri, val],
7777+ });
7878+7979+ if (!result.rowsAffected) throw new Error("Failed to register label activation");
8080+ }
8181+8282+ async registerLabelDeactivation(uri: string, val: string) {
8383+ const result = await this.db.execute({
8484+ sql: `
8585+ DELETE FROM active_labels
8686+ WHERE uri = ? AND val = ?
8787+ `,
8888+ args: [uri, val],
8989+ });
9090+9191+ if (!result.rowsAffected) throw new Error("Failed to register label deactivation");
9292+ }
9393+}