[{"_1":2,"_3":-5,"_4":-5},"loaderData",{"_5":6,"_7":8,"_9":10,"_11":12},"actionData","errors","root",{"_228":-5,"_231":232,"_233":234},"routes/shell",{"_40":41,"_227":-5,"_228":-5,"_229":230},"routes/repo",{"_33":-7,"_34":35,"_36":37,"_38":39,"_40":41,"_42":31,"_43":31,"_44":31,"_45":31,"_46":31,"_47":31,"_48":49,"_50":49,"_51":31,"_52":-7,"_53":-7,"_54":55,"_56":57,"_58":59,"_60":-5,"_61":62,"_63":64,"_65":66,"_67":68},"routes/repo.blob",{"_13":14,"_15":16,"_17":18,"_19":20,"_21":14,"_22":23,"_24":-5,"_25":26,"_27":28,"_28":29,"_30":31,"_32":14},"ref","ed20faf0f5b044e68b4cfb431897bd4f73ac494f","path","apps/server/src/experiments/connections.ts","oid","44ef37d507232a54ee8a13536e91c8a4525f4b97","size",5371,"commit","mounts",[],"source","plain",{"_13":14,"_15":16},"kind","text","import { randomBytes } from \"node:crypto\";\nimport type { Source } from \"@chopin/experiment\";\nimport { fail, fingerprint } from \"./service\";\n\nexport type PairingInput = Omit & { label: string };\nexport type Connection = {\n\tid: string;\n\tdocumentId: string;\n\towner: string;\n\tlogin: string;\n\tsessionId: string;\n\tlabel: string;\n\tsource: Source;\n\texpiresAt: number;\n};\ntype Pending = {\n\tid: string;\n\tinput: PairingInput;\n\tproof: string;\n\texpiresAt: number;\n\tconnection?: Connection;\n\ttoken?: string;\n};\nexport type Grant = { connectionId: string; run?: { id: string; generation: number } };\n\nexport class Connections {\n\t#pending = new Map();\n\t#connections = new Map();\n\t#tokens = new Map();\n\t#runTokens = new Map();\n\t#waiters = new Map void>>();\n\t#locks = new Map>();\n\tconstructor(private now = () => Date.now()) {}\n\tcreate(input: PairingInput) {\n\t\tthis.sweep();\n\t\tif (this.#pending.size >= 100) fail(\"pairing-capacity\");\n\t\tlet secret = randomBytes(32).toString(\"base64url\");\n\t\tlet id = crypto.randomUUID();\n\t\tthis.#pending.set(id, {\n\t\t\tid,\n\t\t\tinput,\n\t\t\tproof: fingerprint(secret),\n\t\t\texpiresAt: this.now() + 300_000,\n\t\t});\n\t\treturn { id, secret };\n\t}\n\tpending(id: string) {\n\t\tlet value = this.#pending.get(id);\n\t\tif (!value || value.expiresAt <= this.now()) fail(\"pairing-expired\");\n\t\treturn value;\n\t}\n\tapprove(\n\t\tid: string,\n\t\towner: { id: string; login: string; sessionId: string },\n\t\tdocumentId: string,\n\t\trepositoryId: string,\n\t) {\n\t\tlet value = this.pending(id);\n\t\tif (value.connection) {\n\t\t\tif (value.connection.owner !== owner.id || value.connection.documentId !== documentId) {\n\t\t\t\tfail(\"already-paired\");\n\t\t\t}\n\t\t\treturn value.connection;\n\t\t}\n\t\tif (this.list(documentId).filter(item => item.owner === owner.id).length >= 8) {\n\t\t\tfail(\"connection-limit\");\n\t\t}\n\t\tlet { label, ...source } = value.input;\n\t\tlet connection: Connection = {\n\t\t\tid: crypto.randomUUID(),\n\t\t\tdocumentId,\n\t\t\towner: owner.id,\n\t\t\tlogin: owner.login,\n\t\t\tsessionId: owner.sessionId,\n\t\t\tlabel,\n\t\t\tsource: { ...source, repositoryId },\n\t\t\texpiresAt: this.now() + 90_000,\n\t\t};\n\t\tvalue.connection = connection;\n\t\tvalue.token = randomBytes(32).toString(\"base64url\");\n\t\tthis.#connections.set(connection.id, connection);\n\t\tthis.#tokens.set(fingerprint(value.token), { connectionId: connection.id });\n\t\treturn connection;\n\t}\n\tclaim(id: string, secret: string) {\n\t\tlet value = this.pending(id);\n\t\tif (value.proof !== fingerprint(secret)) fail(\"pairing-forbidden\");\n\t\treturn value.token ? { token: value.token, connection: value.connection } : { waiting: true };\n\t}\n\tlookup(token: string) {\n\t\tlet grant = this.#tokens.get(fingerprint(token));\n\t\tlet connection = grant && this.get(grant.connectionId);\n\t\tif (!grant || !connection) fail(\"connection-unavailable\");\n\t\treturn { grant, connection };\n\t}\n\tget(id: string) {\n\t\tlet value = this.#connections.get(id);\n\t\treturn value && value.expiresAt > this.now() ? value : undefined;\n\t}\n\ttouch(connection: Connection) {\n\t\tconnection.expiresAt = this.now() + 90_000;\n\t}\n\tlist(documentId: string) {\n\t\treturn [...this.#connections.values()].filter(value =>\n\t\t\tvalue.documentId === documentId && value.expiresAt > this.now()\n\t\t);\n\t}\n\trunToken(connectionId: string, id: string, generation: number) {\n\t\tlet key = `${connectionId}:${id}:${generation}`;\n\t\tlet existing = this.#runTokens.get(key);\n\t\tif (existing) return existing;\n\t\tlet token = randomBytes(32).toString(\"base64url\");\n\t\tthis.#runTokens.set(key, token);\n\t\tthis.#tokens.set(fingerprint(token), { connectionId, run: { id, generation } });\n\t\treturn token;\n\t}\n\trevoke(id: string) {\n\t\tlet connection = this.#connections.get(id);\n\t\tthis.#connections.delete(id);\n\t\tfor (let key of this.#runTokens.keys()) {\n\t\t\tif (key.startsWith(`${id}:`)) this.#runTokens.delete(key);\n\t\t}\n\t\tfor (let [key, grant] of this.#tokens) if (grant.connectionId === id) this.#tokens.delete(key);\n\t\tif (connection) this.wake(connection.documentId);\n\t}\n\trevokeSession(sessionId: string) {\n\t\tfor (let connection of this.#connections.values()) {\n\t\t\tif (connection.sessionId === sessionId) this.revoke(connection.id);\n\t\t}\n\t}\n\tsweep() {\n\t\tfor (let [id, pending] of this.#pending) {\n\t\t\tif (pending.expiresAt <= this.now()) this.#pending.delete(id);\n\t\t}\n\t\tfor (let [id, connection] of this.#connections) {\n\t\t\tif (connection.expiresAt <= this.now()) this.revoke(id);\n\t\t}\n\t}\n\twake(documentId: string) {\n\t\tfor (let resolve of this.#waiters.get(documentId) ?? []) resolve();\n\t}\n\twait(documentId: string, signal: AbortSignal) {\n\t\treturn new Promise(resolve => {\n\t\t\tlet set = this.#waiters.get(documentId) ?? new Set();\n\t\t\tthis.#waiters.set(documentId, set);\n\t\t\tlet finish = () => {\n\t\t\t\tclearTimeout(timer);\n\t\t\t\tset.delete(finish);\n\t\t\t\tif (!set.size) this.#waiters.delete(documentId);\n\t\t\t\tsignal.removeEventListener(\"abort\", finish);\n\t\t\t\tresolve();\n\t\t\t};\n\t\t\tlet timer = setTimeout(finish, 20_000);\n\t\t\tset.add(finish);\n\t\t\tsignal.addEventListener(\"abort\", finish, { once: true });\n\t\t\tif (signal.aborted) finish();\n\t\t});\n\t}\n\tasync locked(id: string, action: () => Promise): Promise {\n\t\tlet next = (this.#locks.get(id) ?? 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