Migrate KYC backend from Django to Express + Apollo Server + Prisma

Replace Python/Django/Graphene with TypeScript/Express/Apollo Server.
Same 3 endpoints (public/user/m2m), same JWT auth via Logto.
Prisma replaces Django ORM. MongoDB, Temporal and SurrealDB integrations preserved.

src/auth.ts

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+import { createRemoteJWKSet, jwtVerify, type JWTPayload } from 'jose'
+import { GraphQLError } from 'graphql'
+import type { Request } from 'express'
+
+const LOGTO_JWKS_URL = process.env.LOGTO_JWKS_URL || 'https://auth.optovia.ru/oidc/jwks'
+const LOGTO_ISSUER = process.env.LOGTO_ISSUER || 'https://auth.optovia.ru/oidc'
+
+const jwks = createRemoteJWKSet(new URL(LOGTO_JWKS_URL))
+
+export interface AuthContext {
+  userId?: string
+  scopes: string[]
+  isM2M?: boolean
+}
+
+function getBearerToken(req: Request): string | null {
+  const auth = req.headers.authorization || ''
+  if (!auth.startsWith('Bearer ')) return null
+  const token = auth.slice(7)
+  if (!token || token === 'undefined') return null
+  return token
+}
+
+export async function publicContext(req: Request): Promise<AuthContext> {
+  // Optional auth - try to extract userId if token present
+  const token = getBearerToken(req)
+  if (!token) return { scopes: [] }
+  try {
+    const { payload } = await jwtVerify(token, jwks, { issuer: LOGTO_ISSUER })
+    return { userId: payload.sub, scopes: [] }
+  } catch {
+    return { scopes: [] }
+  }
+}
+
+export async function userContext(req: Request): Promise<AuthContext> {
+  const token = getBearerToken(req)
+  if (!token) {
+    throw new GraphQLError('Unauthorized', { extensions: { code: 'UNAUTHENTICATED' } })
+  }
+  const { payload } = await jwtVerify(token, jwks, { issuer: LOGTO_ISSUER })
+  return { userId: payload.sub, scopes: [] }
+}
+
+export async function m2mContext(): Promise<AuthContext> {
+  return { scopes: [], isM2M: true }
+}

src/db.ts

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+import { PrismaClient } from '@prisma/client'
+
+export const prisma = new PrismaClient()

src/index.ts

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+import express from 'express'
+import cors from 'cors'
+import { ApolloServer } from '@apollo/server'
+import { expressMiddleware } from '@apollo/server/express4'
+import * as Sentry from '@sentry/node'
+import { publicTypeDefs, publicResolvers } from './schemas/public.js'
+import { userTypeDefs, userResolvers } from './schemas/user.js'
+import { m2mTypeDefs, m2mResolvers } from './schemas/m2m.js'
+import { publicContext, userContext, m2mContext, type AuthContext } from './auth.js'
+
+const PORT = parseInt(process.env.PORT || '8000', 10)
+const SENTRY_DSN = process.env.SENTRY_DSN || ''
+
+if (SENTRY_DSN) {
+  Sentry.init({
+    dsn: SENTRY_DSN,
+    tracesSampleRate: 0.01,
+    release: process.env.RELEASE_VERSION || '1.0.0',
+    environment: process.env.ENVIRONMENT || 'production',
+  })
+}
+
+const app = express()
+
+app.use(cors({ origin: ['https://optovia.ru'], credentials: true }))
+
+const publicServer = new ApolloServer<AuthContext>({
+  typeDefs: publicTypeDefs,
+  resolvers: publicResolvers,
+  introspection: true,
+})
+
+const userServer = new ApolloServer<AuthContext>({
+  typeDefs: userTypeDefs,
+  resolvers: userResolvers,
+  introspection: true,
+})
+
+const m2mServer = new ApolloServer<AuthContext>({
+  typeDefs: m2mTypeDefs,
+  resolvers: m2mResolvers,
+  introspection: true,
+})
+
+await Promise.all([publicServer.start(), userServer.start(), m2mServer.start()])
+
+app.use(
+  '/graphql/public',
+  express.json(),
+  expressMiddleware(publicServer, {
+    context: async ({ req }) => publicContext(req as unknown as import('express').Request),
+  }) as unknown as express.RequestHandler,
+)
+
+app.use(
+  '/graphql/user',
+  express.json(),
+  expressMiddleware(userServer, {
+    context: async ({ req }) => userContext(req as unknown as import('express').Request),
+  }) as unknown as express.RequestHandler,
+)
+
+app.use(
+  '/graphql/m2m',
+  express.json(),
+  expressMiddleware(m2mServer, {
+    context: async () => m2mContext(),
+  }) as unknown as express.RequestHandler,
+)
+
+app.get('/health', (_, res) => {
+  res.json({ status: 'ok' })
+})
+
+app.listen(PORT, '0.0.0.0', () => {
+  console.log(`KYC server ready on port ${PORT}`)
+  console.log(`  /graphql/public  - public (optional auth)`)
+  console.log(`  /graphql/user    - id token auth`)
+  console.log(`  /graphql/m2m     - internal services (no auth)`)
+})

src/schemas/m2m.ts

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+import { prisma } from '../db.js'
+
+export const m2mTypeDefs = `#graphql
+  type CreateKycProfileResult {
+    success: Boolean!
+    profileUuid: String
+    message: String
+  }
+
+  type Query {
+    health: String!
+  }
+
+  type Mutation {
+    createKycProfile(kycApplicationId: String!): CreateKycProfileResult
+    createKycMonitoring(kycApplicationId: String!): CreateKycProfileResult
+  }
+`
+
+async function createProfile(_: unknown, args: { kycApplicationId: string }) {
+  try {
+    const app = await prisma.kYCApplication.findUnique({
+      where: { uuid: args.kycApplicationId },
+    })
+
+    if (!app) {
+      return { success: false, profileUuid: '', message: `KYCApplication not found: ${args.kycApplicationId}` }
+    }
+
+    // Check if profile already exists
+    const existing = await prisma.kYCProfile.findFirst({
+      where: { userId: app.userId, teamName: app.teamName },
+    })
+
+    if (existing) {
+      return { success: true, profileUuid: existing.uuid, message: 'Profile already exists' }
+    }
+
+    const profile = await prisma.kYCProfile.create({
+      data: {
+        userId: app.userId,
+        teamName: app.teamName,
+        countryCode: app.countryCode,
+        workflowStatus: 'active',
+        score: app.score,
+        contactPerson: app.contactPerson,
+        contactEmail: app.contactEmail,
+        contactPhone: app.contactPhone,
+        contentTypeId: app.contentTypeId,
+        objectId: app.objectId,
+        approvedBy: app.approvedBy,
+        approvedAt: app.approvedAt,
+      },
+    })
+
+    return { success: true, profileUuid: profile.uuid, message: 'Profile created' }
+  } catch (e) {
+    return { success: false, profileUuid: '', message: String(e) }
+  }
+}
+
+export const m2mResolvers = {
+  Query: {
+    health: () => 'ok',
+  },
+  Mutation: {
+    createKycProfile: createProfile,
+    createKycMonitoring: createProfile,
+  },
+}

src/schemas/public.ts

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+import { prisma } from '../db.js'
+import { getCompanyDocuments, aggregateCompanyData } from '../services/mongodb.js'
+import type { AuthContext } from '../auth.js'
+
+export const publicTypeDefs = `#graphql
+  type CompanyTeaser {
+    companyType: String
+    registrationYear: Int
+    isActive: Boolean
+    sourcesCount: Int
+  }
+
+  type CompanyFull {
+    inn: String
+    ogrn: String
+    name: String
+    companyType: String
+    registrationYear: Int
+    isActive: Boolean
+    address: String
+    director: String
+    capital: String
+    activities: [String]
+    sources: [String]
+    lastUpdated: String
+  }
+
+  type Query {
+    kycProfileTeaser(profileUuid: String!): CompanyTeaser
+    kycProfileFull(profileUuid: String!): CompanyFull
+    health: String!
+  }
+`
+
+async function getInnByProfileUuid(profileUuid: string): Promise<string | null> {
+  const profile = await prisma.kYCProfile.findUnique({ where: { uuid: profileUuid } })
+  if (!profile || !profile.objectId) return null
+
+  const details = await prisma.kYCDetailsRussia.findUnique({ where: { id: profile.objectId } })
+  return details?.inn ?? null
+}
+
+export const publicResolvers = {
+  Query: {
+    health: () => 'ok',
+
+    kycProfileTeaser: async (_: unknown, args: { profileUuid: string }) => {
+      const inn = await getInnByProfileUuid(args.profileUuid)
+      if (!inn) return null
+
+      const docs = await getCompanyDocuments(inn)
+      if (docs.length === 0) return null
+
+      const summary = aggregateCompanyData(docs as Record<string, unknown>[])
+      return {
+        companyType: summary.companyType,
+        registrationYear: summary.registrationYear,
+        isActive: summary.isActive,
+        sourcesCount: summary.sources.length,
+      }
+    },
+
+    kycProfileFull: async (_: unknown, args: { profileUuid: string }, ctx: AuthContext) => {
+      if (!ctx.userId) return null
+
+      const inn = await getInnByProfileUuid(args.profileUuid)
+      if (!inn) return null
+
+      const docs = await getCompanyDocuments(inn)
+      if (docs.length === 0) return null
+
+      const summary = aggregateCompanyData(docs as Record<string, unknown>[])
+      return {
+        inn: summary.inn,
+        ogrn: summary.ogrn,
+        name: summary.name,
+        companyType: summary.companyType,
+        registrationYear: summary.registrationYear,
+        isActive: summary.isActive,
+        address: summary.address,
+        director: summary.director,
+        capital: summary.capital,
+        activities: summary.activities,
+        sources: summary.sources,
+        lastUpdated: summary.lastUpdated,
+      }
+    },
+  },
+}

src/schemas/user.ts

@@ -0,0 +1,181 @@
+import { GraphQLError } from 'graphql'
+import { prisma } from '../db.js'
+import { startKycWorkflow } from '../services/temporal.js'
+import type { AuthContext } from '../auth.js'
+
+export const userTypeDefs = `#graphql
+  type KYCApplication {
+    id: Int!
+    uuid: String!
+    userId: String!
+    teamName: String
+    countryCode: String
+    workflowStatus: String!
+    score: Int!
+    contactPerson: String
+    contactEmail: String
+    contactPhone: String
+    countryData: String
+    createdAt: String!
+    updatedAt: String!
+  }
+
+  input KYCApplicationRussiaInput {
+    companyName: String!
+    companyFullName: String!
+    inn: String!
+    kpp: String
+    ogrn: String
+    address: String!
+    bankName: String!
+    bik: String!
+    correspondentAccount: String
+    contactPerson: String!
+    contactEmail: String!
+    contactPhone: String!
+  }
+
+  type CreateKYCApplicationResult {
+    kycApplication: KYCApplication
+    success: Boolean!
+  }
+
+  type Query {
+    kycApplications: [KYCApplication]
+    kycApplication(uuid: String!): KYCApplication
+    kycRequests: [KYCApplication]
+    kycRequest(uuid: String!): KYCApplication
+  }
+
+  type Mutation {
+    createKycApplicationRussia(input: KYCApplicationRussiaInput!): CreateKYCApplicationResult
+    createKycRequestRussia(input: KYCApplicationRussiaInput!): CreateKYCApplicationResult
+  }
+`
+
+async function getApplications(ctx: AuthContext) {
+  if (!ctx.userId) return []
+  return prisma.kYCApplication.findMany({ where: { userId: ctx.userId } })
+}
+
+async function getApplication(ctx: AuthContext, uuid: string) {
+  if (!ctx.userId) return null
+  return prisma.kYCApplication.findFirst({ where: { uuid, userId: ctx.userId } })
+}
+
+async function getCountryData(app: { objectId: number | null }) {
+  if (!app.objectId) return null
+  const details = await prisma.kYCDetailsRussia.findUnique({ where: { id: app.objectId } })
+  if (!details) return null
+  return JSON.stringify({
+    company_name: details.companyName,
+    company_full_name: details.companyFullName,
+    inn: details.inn,
+    kpp: details.kpp,
+    ogrn: details.ogrn,
+    address: details.address,
+    bank_name: details.bankName,
+    bik: details.bik,
+    correspondent_account: details.correspondentAccount,
+  })
+}
+
+interface RussiaInput {
+  companyName: string
+  companyFullName: string
+  inn: string
+  kpp?: string
+  ogrn?: string
+  address: string
+  bankName: string
+  bik: string
+  correspondentAccount?: string
+  contactPerson: string
+  contactEmail: string
+  contactPhone: string
+}
+
+async function createApplicationRussia(_: unknown, args: { input: RussiaInput }, ctx: AuthContext) {
+  if (!ctx.userId) throw new GraphQLError('Not authenticated')
+
+  const details = await prisma.kYCDetailsRussia.create({
+    data: {
+      companyName: args.input.companyName,
+      companyFullName: args.input.companyFullName,
+      inn: args.input.inn,
+      kpp: args.input.kpp || '',
+      ogrn: args.input.ogrn || '',
+      address: args.input.address,
+      bankName: args.input.bankName,
+      bik: args.input.bik,
+      correspondentAccount: args.input.correspondentAccount || '',
+    },
+  })
+
+  // Django ContentType ID for kyc_details_russia - need to look this up
+  // For compatibility, we store the objectId but skip content_type_id
+  const app = await prisma.kYCApplication.create({
+    data: {
+      userId: ctx.userId,
+      teamName: args.input.companyName,
+      countryCode: 'RU',
+      contactPerson: args.input.contactPerson,
+      contactEmail: args.input.contactEmail,
+      contactPhone: args.input.contactPhone,
+      objectId: details.id,
+    },
+  })
+
+  // Start Temporal workflow
+  try {
+    await startKycWorkflow({
+      kyc_request_id: app.uuid,
+      team_name: app.teamName || args.input.companyName,
+      owner_id: ctx.userId,
+      owner_email: args.input.contactEmail,
+      country_code: 'RU',
+      country_data: {
+        company_name: details.companyName,
+        company_full_name: details.companyFullName,
+        inn: details.inn,
+        kpp: details.kpp,
+        ogrn: details.ogrn,
+        address: details.address,
+        bank_name: details.bankName,
+        bik: details.bik,
+        correspondent_account: details.correspondentAccount,
+      },
+    })
+    await prisma.kYCApplication.update({
+      where: { id: app.id },
+      data: { workflowStatus: 'active' },
+    })
+  } catch (e) {
+    console.error('Failed to start KYC workflow:', e)
+    await prisma.kYCApplication.update({
+      where: { id: app.id },
+      data: { workflowStatus: 'error' },
+    })
+  }
+
+  const updated = await prisma.kYCApplication.findUnique({ where: { id: app.id } })
+  return { kycApplication: updated, success: true }
+}
+
+export const userResolvers = {
+  Query: {
+    kycApplications: (_: unknown, __: unknown, ctx: AuthContext) => getApplications(ctx),
+    kycApplication: (_: unknown, args: { uuid: string }, ctx: AuthContext) => getApplication(ctx, args.uuid),
+    kycRequests: (_: unknown, __: unknown, ctx: AuthContext) => getApplications(ctx),
+    kycRequest: (_: unknown, args: { uuid: string }, ctx: AuthContext) => getApplication(ctx, args.uuid),
+  },
+  Mutation: {
+    createKycApplicationRussia: createApplicationRussia,
+    createKycRequestRussia: createApplicationRussia,
+  },
+  KYCApplication: {
+    countryData: async (parent: { objectId: number | null }) => getCountryData(parent),
+    createdAt: (parent: { createdAt: Date }) => parent.createdAt.toISOString(),
+    updatedAt: (parent: { updatedAt: Date }) => parent.updatedAt.toISOString(),
+  },
+}

src/services/mongodb.ts

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+import { MongoClient } from 'mongodb'
+
+const MONGODB_URI = process.env.MONGODB_URI || ''
+const MONGODB_DB = process.env.MONGODB_DB || 'kyc'
+
+export async function getCompanyDocuments(inn: string) {
+  if (!MONGODB_URI) return []
+  const client = new MongoClient(MONGODB_URI)
+  try {
+    await client.connect()
+    const db = client.db(MONGODB_DB)
+    return await db.collection('company_documents').find({ inn }).toArray()
+  } finally {
+    await client.close()
+  }
+}
+
+interface CompanySummary {
+  inn?: string
+  ogrn?: string
+  name?: string
+  companyType?: string
+  registrationYear?: number
+  isActive: boolean
+  address?: string
+  director?: string
+  capital?: string
+  activities: string[]
+  sources: string[]
+  lastUpdated?: string
+}
+
+export function aggregateCompanyData(documents: Record<string, unknown>[]): CompanySummary {
+  const summary: CompanySummary = {
+    isActive: true,
+    activities: [],
+    sources: [],
+  }
+
+  for (const doc of documents) {
+    const source = (doc.source as string) || 'unknown'
+    summary.sources.push(source)
+
+    const data = (doc.data as Record<string, unknown>) || {}
+
+    if (!summary.inn) summary.inn = doc.inn as string
+    if (!summary.ogrn && data.ogrn) summary.ogrn = data.ogrn as string
+    if (!summary.name && data.name) summary.name = data.name as string
+
+    if (!summary.companyType && summary.name) {
+      const name = summary.name.toUpperCase()
+      if (name.includes('ООО') || name.includes('ОБЩЕСТВО С ОГРАНИЧЕННОЙ')) summary.companyType = 'ООО'
+      else if (name.includes('ПАО')) summary.companyType = 'ПАО'
+      else if (name.includes('АО') || name.includes('АКЦИОНЕРНОЕ ОБЩЕСТВО')) summary.companyType = 'АО'
+      else if (name.includes('ИП') || name.includes('ИНДИВИДУАЛЬНЫЙ ПРЕДПРИНИМАТЕЛЬ')) summary.companyType = 'ИП'
+    }
+
+    const collectedAt = doc.collected_at as string | undefined
+    if (collectedAt && (!summary.lastUpdated || collectedAt > summary.lastUpdated)) {
+      summary.lastUpdated = collectedAt
+    }
+  }
+
+  return summary
+}

src/services/surrealdb.ts

@@ -0,0 +1,47 @@
+const SURREALDB_URL = process.env.SURREALDB_URL || ''
+const SURREALDB_NS = process.env.SURREALDB_NS || 'optovia'
+const SURREALDB_DB = process.env.SURREALDB_DB || 'events'
+const SURREALDB_USER = process.env.SURREALDB_USER || ''
+const SURREALDB_PASS = process.env.SURREALDB_PASS || ''
+
+export async function logKycEvent(
+  kycId: string,
+  userId: string,
+  event: string,
+  description: string,
+): Promise<boolean> {
+  if (!SURREALDB_URL) return false
+
+  const payload = {
+    kyc_id: kycId,
+    user_id: userId,
+    event,
+    description,
+    created_at: new Date().toISOString(),
+  }
+
+  const query = `CREATE kyc_event CONTENT ${JSON.stringify(payload)};`
+  const headers: Record<string, string> = {
+    'Content-Type': 'text/plain',
+    Accept: 'application/json',
+    NS: SURREALDB_NS,
+    DB: SURREALDB_DB,
+  }
+
+  if (SURREALDB_USER && SURREALDB_PASS) {
+    headers.Authorization = `Basic ${Buffer.from(`${SURREALDB_USER}:${SURREALDB_PASS}`).toString('base64')}`
+  }
+
+  try {
+    const res = await fetch(`${SURREALDB_URL.replace(/\/$/, '')}/sql`, {
+      method: 'POST',
+      headers,
+      body: query,
+      signal: AbortSignal.timeout(10000),
+    })
+    return res.ok
+  } catch (e) {
+    console.error('Failed to log KYC event:', e)
+    return false
+  }
+}

src/services/temporal.ts

@@ -0,0 +1,28 @@
+import { Client, Connection } from '@temporalio/client'
+
+const TEMPORAL_HOST = process.env.TEMPORAL_HOST || 'temporal:7233'
+const TEMPORAL_NAMESPACE = process.env.TEMPORAL_NAMESPACE || 'default'
+const TEMPORAL_TASK_QUEUE = process.env.TEMPORAL_TASK_QUEUE || 'kyc-task-queue'
+
+interface KycWorkflowData {
+  kyc_request_id: string
+  team_name: string
+  owner_id: string
+  owner_email: string
+  country_code: string
+  country_data: Record<string, string>
+}
+
+export async function startKycWorkflow(data: KycWorkflowData): Promise<string> {
+  const connection = await Connection.connect({ address: TEMPORAL_HOST })
+  const client = new Client({ connection, namespace: TEMPORAL_NAMESPACE })
+
+  const handle = await client.workflow.start('kyc_application', {
+    args: [data],
+    taskQueue: TEMPORAL_TASK_QUEUE,
+    workflowId: data.kyc_request_id,
+  })
+
+  console.log(`KYC workflow started: ${handle.workflowId}`)
+  return handle.workflowId
+}