File size: 4,099 Bytes
aec3094 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 | import type { CreateCredentialDto } from '@n8n/api-types';
import {
AiChatRequestDto,
AiApplySuggestionRequestDto,
AiAskRequestDto,
AiFreeCreditsRequestDto,
AiBuilderChatRequestDto,
} from '@n8n/api-types';
import { Body, Post, RestController } from '@n8n/decorators';
import type { AiAssistantSDK } from '@n8n_io/ai-assistant-sdk';
import { Response } from 'express';
import { OPEN_AI_API_CREDENTIAL_TYPE } from 'n8n-workflow';
import { strict as assert } from 'node:assert';
import { WritableStream } from 'node:stream/web';
import { FREE_AI_CREDITS_CREDENTIAL_NAME } from '@/constants';
import { CredentialsService } from '@/credentials/credentials.service';
import { InternalServerError } from '@/errors/response-errors/internal-server.error';
import { AuthenticatedRequest } from '@/requests';
import { WorkflowBuilderService } from '@/services/ai-workflow-builder.service';
import { AiService } from '@/services/ai.service';
import { UserService } from '@/services/user.service';
export type FlushableResponse = Response & { flush: () => void };
@RestController('/ai')
export class AiController {
constructor(
private readonly aiService: AiService,
private readonly workflowBuilderService: WorkflowBuilderService,
private readonly credentialsService: CredentialsService,
private readonly userService: UserService,
) {}
@Post('/build', { rateLimit: { limit: 100 } })
async build(
req: AuthenticatedRequest,
res: FlushableResponse,
@Body payload: AiBuilderChatRequestDto,
) {
try {
const aiResponse = this.workflowBuilderService.chat(
{
question: payload.payload.question ?? '',
},
req.user,
);
res.header('Content-type', 'application/json-lines').flush();
// Handle the stream
for await (const chunk of aiResponse) {
res.flush();
res.write(JSON.stringify(chunk) + '⧉⇋⇋➽⌑⧉§§\n');
}
res.end();
} catch (e) {
assert(e instanceof Error);
throw new InternalServerError(e.message, e);
}
}
@Post('/chat', { rateLimit: { limit: 100 } })
async chat(req: AuthenticatedRequest, res: FlushableResponse, @Body payload: AiChatRequestDto) {
try {
const aiResponse = await this.aiService.chat(payload, req.user);
if (aiResponse.body) {
res.header('Content-type', 'application/json-lines').flush();
await aiResponse.body.pipeTo(
new WritableStream({
write(chunk) {
res.write(chunk);
res.flush();
},
}),
);
res.end();
}
} catch (e) {
assert(e instanceof Error);
throw new InternalServerError(e.message, e);
}
}
@Post('/chat/apply-suggestion')
async applySuggestion(
req: AuthenticatedRequest,
_: Response,
@Body payload: AiApplySuggestionRequestDto,
): Promise<AiAssistantSDK.ApplySuggestionResponse> {
try {
return await this.aiService.applySuggestion(payload, req.user);
} catch (e) {
assert(e instanceof Error);
throw new InternalServerError(e.message, e);
}
}
@Post('/ask-ai')
async askAi(
req: AuthenticatedRequest,
_: Response,
@Body payload: AiAskRequestDto,
): Promise<AiAssistantSDK.AskAiResponsePayload> {
try {
return await this.aiService.askAi(payload, req.user);
} catch (e) {
assert(e instanceof Error);
throw new InternalServerError(e.message, e);
}
}
@Post('/free-credits')
async aiCredits(req: AuthenticatedRequest, _: Response, @Body payload: AiFreeCreditsRequestDto) {
try {
const aiCredits = await this.aiService.createFreeAiCredits(req.user);
const credentialProperties: CreateCredentialDto = {
name: FREE_AI_CREDITS_CREDENTIAL_NAME,
type: OPEN_AI_API_CREDENTIAL_TYPE,
data: {
apiKey: aiCredits.apiKey,
url: aiCredits.url,
},
projectId: payload?.projectId,
};
const newCredential = await this.credentialsService.createManagedCredential(
credentialProperties,
req.user,
);
await this.userService.updateSettings(req.user.id, {
userClaimedAiCredits: true,
});
return newCredential;
} catch (e) {
assert(e instanceof Error);
throw new InternalServerError(e.message, e);
}
}
}
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