| 1 | "use server"; |
| 2 | |
| 3 | import { createPresentationGraph } from "@/ai/agents/presentation/createAgent"; |
| 4 | import { ensureCheckpointerSetup } from "@/ai/lib/postgres"; |
| 5 | import { auth } from "@/server/auth"; |
| 6 | import { toHydratedUiMessages } from "@/server/ai/chatMessages"; |
| 7 | import { type UIMessage } from "ai"; |
| 8 | import { type BaseMessage } from "@langchain/core/messages"; |
| 9 | |
| 10 | interface PresentationGraphState { |
| 11 | values: { |
| 12 | messages?: BaseMessage[]; |
| 13 | activeMessages?: BaseMessage[]; |
| 14 | }; |
| 15 | tasks?: Array<{ |
| 16 | interrupts?: unknown[]; |
| 17 | state?: unknown; |
| 18 | }>; |
| 19 | } |
| 20 | |
| 21 | export async function getPresentationMessages( |
| 22 | presentationId: string, |
| 23 | ): Promise<UIMessage[]> { |
| 24 | const session = await auth(); |
| 25 | |
| 26 | if (!session?.user) { |
| 27 | throw new Error("Unauthorized"); |
| 28 | } |
| 29 | |
| 30 | await ensureCheckpointerSetup(); |
| 31 | |
| 32 | const graph = createPresentationGraph(); |
| 33 | let state: PresentationGraphState | null = null; |
| 34 | |
| 35 | try { |
| 36 | state = (await graph.getState( |
| 37 | { |
| 38 | configurable: { |
| 39 | thread_id: presentationId, |
| 40 | }, |
| 41 | }, |
| 42 | { subgraphs: true }, |
| 43 | )) as PresentationGraphState; |
| 44 | } catch { |
| 45 | state = null; |
| 46 | } |
| 47 | |
| 48 | if (!state) { |
| 49 | return []; |
| 50 | } |
| 51 | |
| 52 | const stateValues = state.values; |
| 53 | |
| 54 | let allMessages = [ |
| 55 | ...(stateValues.messages ?? []), |
| 56 | ...(stateValues.activeMessages ?? []), |
| 57 | ].filter( |
| 58 | (message) => message.type !== "system" && message.type !== "developer", |
| 59 | ); |
| 60 | |
| 61 | if (state.tasks && state.tasks.length > 0) { |
| 62 | const taskWithInterrupt = state.tasks.find( |
| 63 | (task) => task.interrupts && task.interrupts.length > 0, |
| 64 | ); |
| 65 | |
| 66 | if (taskWithInterrupt) { |
| 67 | const nestedState = ( |
| 68 | taskWithInterrupt.state as { |
| 69 | tasks?: Array<{ |
| 70 | state?: { |
| 71 | values?: { |
| 72 | messages?: BaseMessage[]; |
| 73 | activeMessages?: BaseMessage[]; |
| 74 | }; |
| 75 | }; |
| 76 | }>; |
| 77 | } |
| 78 | ).tasks?.[0]?.state?.values; |
| 79 | |
| 80 | if (nestedState) { |
| 81 | allMessages = [ |
| 82 | ...(nestedState.messages ?? []), |
| 83 | ...(nestedState.activeMessages ?? []), |
| 84 | ].filter( |
| 85 | (message) => message.type !== "system" && message.type !== "developer", |
| 86 | ); |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | return toHydratedUiMessages(allMessages); |
| 92 | } |
| 93 |