Hi there!

This account is a demo of Fedify on Val Town.

If you follow this account, it will follow you back.

Thanks to Fedify & Val Town, it only consists of a single TypeScript file (about 170 lines).

Interested? See the source code.

\n `.trim();\n return new Note({\n id: ctx.getObjectUri(Note, values),\n attribution: ctx.getActorUri(values.identifier),\n to: PUBLIC_COLLECTION,\n contents: [content, new LanguageString(content, \"en\")],\n sensitive: false,\n published: Temporal.Instant.from(\"2024-10-03T01:00:00+09:00\"),\n });\n});\n\nfederation\n .setInboxListeners(\"/users/{identifier}/inbox\", \"/inbox\")\n .on(Follow, async (ctx, follow) => {\n const following = ctx.parseUri(follow.objectId);\n if (following?.type !== \"actor\" || following.identifier !== \"demo\") return;\n const follower = await follow.getActor();\n if (follower == null) return;\n await ctx.sendActivity(\n following,\n follower,\n new Accept({\n id: new URL(`#accept/${follower.id.href}`, follow.objectId),\n actor: follow.objectId,\n to: follower.id,\n object: follow,\n })\n );\n await ctx.sendActivity(\n following,\n follower,\n new Follow({\n id: new URL(`#follow/${follower.id.href}`, follow.objectId),\n actor: follow.objectId,\n to: follower.id,\n object: follower.id,\n }),\n );\n });\n\nexport default async function (req: Request): Promise {\n const url = new URL(req.url);\n if (url.pathname === \"/\") {\n return new Response(\n `Follow @demo@${url.host} on your Mastodon/Akkoma/Misskey/etc.`,\n { headers: { \"Content-Type\": \"text/plain; charset=utf-8\" } }\n );\n }\n return federation.fetch(req, { contextData: undefined });\n}","createdAt",["D",1730563751163],"version",35,"currentUserHasLiked","likeCount","forkCount","referenceCount","dependencyCount",1,"commentCount","prCount","mergedPr",{"_130":131,"_132":133},"handle","minhee","profileImageUrl","https://img.clerk.com/eyJ0eXBlIjoicHJveHkiLCJzcmMiOiJodHRwczovL2F2YXRhcnMuZ2l0aHVidXNlcmNvbnRlbnQuY29tL3UvMTI0MzE/dj00IiwicyI6ImJtK1NFYnFjQTlmMnVVVDEzREpWZW9sMzBuZTdIZVlzTHZyeGt2OFk2THMifQ","forkedVal","interval","slug","minhee/FedifyOnValTown","description","Fedify on Val Town This is a single file implementation of ActivityPub using Fedify on Val Town . If you follow @demo@minhee-fedifyonvaltown.web.val.run on your fediverse account,\nit will follow you back. Thanks to Fedify & Val Town, it only consists of a single TypeScript file with\nabout 170 lines. 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{\n Application,\n createFederation,\n Endpoints,\n exportJwk,\n generateCryptoKeyPair,\n Image,\n importJwk,\n LanguageString,\n MemoryKvStore,\n Note,\n PropertyValue,\n PUBLIC_COLLECTION,\n} from \"jsr:@fedify/fedify@1.2.2\";\nimport { configure, getConsoleSink } from \"jsr:@logtape/logtape@0.7.1\";\nimport { AsyncLocalStorage } from \"node:async_hooks\";\nimport { sqlite } from \"https://esm.town/v/std/sqlite\";\n\nawait configure({\n contextLocalStorage: new AsyncLocalStorage(),\n sinks: {\n console: getConsoleSink(),\n },\n loggers: [\n { category: [\"logtape\", \"meta\"], sinks: [], level: \"warning\" },\n { category: [\"fedify\"], sinks: [\"console\"], level: \"info\" },\n ],\n});\n\nawait sqlite.execute(`\n CREATE TABLE IF NOT EXISTS key_pairs (\n identifier TEXT NOT NULL PRIMARY KEY,\n private_key TEXT NOT NULL,\n public_key TEXT NOT NULL,\n created DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP\n );\n`);\n\nconst federation = createFederation({\n kv: new MemoryKvStore(),\n});\n\nfederation\n .setActorDispatcher(\"/users/{identifier}\", async (ctx, identifier) => {\n if (identifier !== \"demo\") return null;\n const keyPairs = await ctx.getActorKeyPairs(identifier);\n return new Application({\n id: ctx.getActorUri(identifier),\n name: \"Fedify on Val Town\",\n summary: \"This is a demo of Fedify on Val Town\",\n preferredUsername: identifier,\n publicKeys: keyPairs.map(pair => pair.cryptographicKey),\n assertionMethods: keyPairs.map(pair => pair.multikey),\n url: new URL(\"/\", ctx.url),\n icon: new Image({\n mediaType: \"image/png\",\n url: new URL(\"https://fedify.dev/logo.png\"),\n }),\n attachments: [\n new PropertyValue({\n name: \"Val (code)\",\n value: \"https://www.val.town/v/minhee/FedifyOnValTown\",\n }),\n ],\n inbox: ctx.getInboxUri(identifier),\n endpoints: new Endpoints({\n sharedInbox: ctx.getInboxUri(),\n }),\n featured: ctx.getFeaturedUri(identifier),\n });\n })\n .setKeyPairsDispatcher(async (ctx, identifier) => {\n const keyPairs = await sqlite.execute({\n sql: \"SELECT * FROM key_pairs WHERE identifier = :identifier\",\n args: { identifier },\n });\n if (keyPairs.rows.length > 0) {\n const [_, privateKey, publicKey] = keyPairs.rows[0];\n return [\n {\n privateKey: await importJwk(JSON.parse(privateKey), \"private\"),\n publicKey: await importJwk(JSON.parse(publicKey), \"public\"),\n },\n ];\n }\n const { privateKey, publicKey } =\n await generateCryptoKeyPair(\"RSASSA-PKCS1-v1_5\");\n await sqlite.execute({\n sql: `\n INSERT INTO key_pairs\n (identifier, private_key, public_key)\n VALUES\n (:identifier, :privateKey, :publicKey)\n `,\n args: {\n identifier,\n privateKey: JSON.stringify(await exportJwk(privateKey)),\n publicKey: JSON.stringify(await exportJwk(publicKey)),\n },\n });\n return [{ privateKey, publicKey }];\n });\n\nfederation.setFeaturedDispatcher(\"/users/{identifier}/featured\", async (ctx, identifier) => {\n return {\n items: [\n await ctx.getObject(Note, { identifier }),\n ],\n }\n});\n\nfederation.setObjectDispatcher(Note, \"/users/{identifier}/note\", (ctx, values) => {\n if (values.identifier !== \"demo\") return null;\n const content = `\n

Hi there!

This account is a demo of Fedify on Val Town.

If you follow this account, it will follow back.

Thanks to Fedify & Val Town, it only consists of a single TypeScript file.

FedifyOnValTown

Version 32