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moeka-project/apps/server/src/app.ts
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TypeScript

import type Redis from 'ioredis'
import type { Env } from './libs/env'
import type { OtelInstance } from './libs/otel'
import type { BillingMqService } from './services/billing/billing-mq'
import type { BillingService } from './services/billing/billing-service'
import type { CharacterService } from './services/characters'
import type { ChatService } from './services/chats'
import type { ConfigKVService } from './services/config-kv'
import type { FluxService } from './services/flux'
import type { FluxAuditService } from './services/flux-audit'
import type { ProviderService } from './services/providers'
import type { StripeService } from './services/stripe'
import type { HonoEnv } from './types/hono'
import process from 'node:process'
import { initLogger, LoggerFormat, LoggerLevel, useLogger } from '@guiiai/logg'
import { serve } from '@hono/node-server'
import { createNodeWebSocket } from '@hono/node-ws'
import { Hono } from 'hono'
import { bodyLimit } from 'hono/body-limit'
import { cors } from 'hono/cors'
import { logger as honoLogger } from 'hono/logger'
import { createLoggLogger, injeca, lifecycle } from 'injeca'
import { createAuth } from './libs/auth'
import { createDrizzle, migrateDatabase } from './libs/db'
import { parsedEnv } from './libs/env'
import { initializeExternalDependency } from './libs/external-dependency'
import { initOtel } from './libs/otel'
import { createRedis } from './libs/redis'
import { sessionMiddleware } from './middlewares/auth'
import { otelMiddleware } from './middlewares/otel'
import { rateLimiter } from './middlewares/rate-limit'
import { createCharacterRoutes } from './routes/characters'
import { createChatWsHandlers } from './routes/chat-ws'
import { createChatRoutes } from './routes/chats'
import { createFluxRoutes } from './routes/flux'
import { createProviderRoutes } from './routes/providers'
import { createStripeRoutes } from './routes/stripe'
import { createV1CompletionsRoutes } from './routes/v1completions'
import { createBillingMqService } from './services/billing/billing-mq'
import { createBillingService } from './services/billing/billing-service'
import { createCharacterService } from './services/characters'
import { createChatService } from './services/chats'
import { createConfigKVService } from './services/config-kv'
import { createFluxService } from './services/flux'
import { createFluxAuditService } from './services/flux-audit'
import { createProviderService } from './services/providers'
import { createRequestLogService } from './services/request-log'
import { createStripeService } from './services/stripe'
import { ApiError, createInternalError, createUnauthorizedError } from './utils/error'
import { getTrustedOrigin } from './utils/origin'
interface AppDeps {
auth: ReturnType<typeof createAuth>
characterService: CharacterService
chatService: ChatService
providerService: ProviderService
fluxService: FluxService
fluxAuditService: FluxAuditService
stripeService: StripeService
billingService: BillingService
billingMqService: BillingMqService
configKV: ConfigKVService
redis: Redis
env: Env
otel: OtelInstance | null
}
function buildApp(deps: AppDeps) {
const logger = useLogger('app').useGlobalConfig()
const app = new Hono<HonoEnv>()
.use(
'/api/*',
cors({
origin: origin => getTrustedOrigin(origin),
credentials: true,
}),
)
.use(honoLogger())
if (deps.otel) {
app.use('*', otelMiddleware(deps.otel.http))
}
// WebSocket setup — must be registered BEFORE bodyLimit middleware
const { injectWebSocket, upgradeWebSocket } = createNodeWebSocket({ app })
const chatWsSetup = createChatWsHandlers(deps.chatService, deps.redis, deps.otel?.engagement ?? null)
app.get('/ws/chat', upgradeWebSocket(async (c) => {
const token = c.req.query('token')
if (!token) {
throw createUnauthorizedError('Missing token')
}
const session = await deps.auth.api.getSession({
headers: new Headers({ Authorization: `Bearer ${token}` }),
})
if (!session?.user) {
throw createUnauthorizedError('Invalid token')
}
return chatWsSetup(session.user.id)
}))
const builtApp = app
.use('*', sessionMiddleware(deps.auth))
.use('*', bodyLimit({ maxSize: 1024 * 1024 }))
.onError((err, c) => {
if (err instanceof ApiError) {
logger.withError(err).warn('API error occurred')
return c.json({
error: err.errorCode,
message: err.message,
details: err.details,
}, err.statusCode)
}
logger.withError(err).error('Unhandled error')
const internalError = createInternalError()
return c.json({
error: internalError.errorCode,
message: internalError.message,
}, internalError.statusCode)
})
/**
* Health check route.
*/
.on('GET', '/health', c => c.json({ status: 'ok' }))
/**
* Auth routes are handled by the auth instance directly,
* Powered by better-auth.
* Rate limited by IP: 20 requests per minute.
*/
.use('/api/auth/*', rateLimiter({
max: 20,
windowSec: 60,
keyGenerator: c => c.req.header('x-forwarded-for') ?? c.req.header('x-real-ip') ?? 'unknown',
}))
.on(['POST', 'GET'], '/api/auth/*', c => deps.auth.handler(c.req.raw))
/**
* Character routes are handled by the character service.
*/
.route('/api/characters', createCharacterRoutes(deps.characterService))
/**
* Provider routes are handled by the provider service.
*/
.route('/api/providers', createProviderRoutes(deps.providerService))
/**
* Chat routes are handled by the chat service.
*/
.route('/api/chats', createChatRoutes(deps.chatService))
/**
* V1 routes for official provider.
*/
.route('/api/v1', createV1CompletionsRoutes(deps.fluxService, deps.billingService, deps.configKV, deps.billingMqService, deps.otel?.llm))
/**
* Flux routes.
*/
.route('/api/flux', createFluxRoutes(deps.fluxService, deps.fluxAuditService))
/**
* Stripe routes.
*/
.route('/api/stripe', createStripeRoutes(deps.fluxService, deps.stripeService, deps.billingService, deps.configKV, deps.env, deps.otel?.revenue))
return { app: builtApp, injectWebSocket }
}
export type AppType = ReturnType<typeof buildApp>['app']
export async function createApp() {
initLogger(LoggerLevel.Debug, LoggerFormat.Pretty)
injeca.setLogger(createLoggLogger(useLogger('injeca').useGlobalConfig()))
const logger = useLogger('app').useGlobalConfig()
const otel = injeca.provide('libs:otel', {
dependsOn: { env: parsedEnv, lifecycle },
build: ({ dependsOn }) => {
const o = initOtel(dependsOn.env)
if (!o)
return null
dependsOn.lifecycle.appHooks.onStop(() => o.shutdown())
return o
},
})
const db = injeca.provide('datastore:db', {
dependsOn: { env: parsedEnv, lifecycle },
build: async ({ dependsOn }) => {
const { db: dbInstance, pool } = await initializeExternalDependency(
'Database',
logger,
async (attempt) => {
const connection = createDrizzle(dependsOn.env.DATABASE_URL)
try {
await connection.db.execute('SELECT 1')
logger.log(`Connected to database on attempt ${attempt}`)
await migrateDatabase(connection.db)
logger.log(`Applied schema on attempt ${attempt}`)
return connection
}
catch (error) {
await connection.pool.end()
throw error
}
},
)
dependsOn.lifecycle.appHooks.onStop(() => pool.end())
return dbInstance
},
})
const redis = injeca.provide('datastore:redis', {
dependsOn: { env: parsedEnv, lifecycle },
build: async ({ dependsOn }) => {
const redisInstance = await initializeExternalDependency(
'Redis',
logger,
async (attempt) => {
const instance = createRedis(dependsOn.env.REDIS_URL)
try {
await instance.connect()
logger.log(`Connected to Redis on attempt ${attempt}`)
return instance
}
catch (error) {
instance.disconnect()
throw error
}
},
)
dependsOn.lifecycle.appHooks.onStop(async () => {
await redisInstance.quit()
})
return redisInstance
},
})
const configKV = injeca.provide('datastore:configKV', {
dependsOn: { redis },
build: ({ dependsOn }) => createConfigKVService(dependsOn.redis),
})
const billingMqService = injeca.provide('services:billingMq', {
dependsOn: { redis, env: parsedEnv },
build: ({ dependsOn }) => createBillingMqService(dependsOn.redis, {
stream: dependsOn.env.BILLING_EVENTS_STREAM,
}),
})
const auth = injeca.provide('services:auth', {
dependsOn: { db, env: parsedEnv, otel },
build: ({ dependsOn }) => createAuth(dependsOn.db, dependsOn.env, dependsOn.otel?.auth),
})
const characterService = injeca.provide('services:characters', {
dependsOn: { db, otel },
build: ({ dependsOn }) => createCharacterService(dependsOn.db, dependsOn.otel?.engagement),
})
const providerService = injeca.provide('services:providers', {
dependsOn: { db },
build: ({ dependsOn }) => createProviderService(dependsOn.db),
})
const chatService = injeca.provide('services:chats', {
dependsOn: { db, otel },
build: ({ dependsOn }) => createChatService(dependsOn.db, dependsOn.otel?.engagement),
})
const stripeService = injeca.provide('services:stripe', {
dependsOn: { db },
build: ({ dependsOn }) => createStripeService(dependsOn.db),
})
const fluxAuditService = injeca.provide('services:fluxAudit', {
dependsOn: { db },
build: ({ dependsOn }) => createFluxAuditService(dependsOn.db),
})
const fluxService = injeca.provide('services:flux', {
dependsOn: { db, redis, configKV },
build: ({ dependsOn }) => createFluxService(dependsOn.db, dependsOn.redis, dependsOn.configKV),
})
const requestLogService = injeca.provide('services:requestLog', {
dependsOn: { db },
build: ({ dependsOn }) => createRequestLogService(dependsOn.db),
})
const billingService = injeca.provide('services:billing', {
dependsOn: { db, redis, billingMqService, configKV, otel },
build: ({ dependsOn }) => createBillingService(dependsOn.db, dependsOn.redis, dependsOn.billingMqService, dependsOn.configKV, dependsOn.otel?.revenue),
})
await injeca.start()
const resolved = await injeca.resolve({
db,
auth,
characterService,
chatService,
providerService,
fluxService,
fluxAuditService,
requestLogService,
stripeService,
billingService,
billingMqService,
configKV,
redis,
env: parsedEnv,
otel,
})
const { app, injectWebSocket } = buildApp({
auth: resolved.auth,
characterService: resolved.characterService,
chatService: resolved.chatService,
providerService: resolved.providerService,
fluxService: resolved.fluxService,
fluxAuditService: resolved.fluxAuditService,
stripeService: resolved.stripeService,
billingService: resolved.billingService,
billingMqService: resolved.billingMqService,
configKV: resolved.configKV,
redis: resolved.redis,
env: resolved.env,
otel: resolved.otel,
})
logger.withFields({ hostname: resolved.env.HOST, port: resolved.env.PORT }).log('Server started')
return {
app,
injectWebSocket,
port: Number(resolved.env.PORT),
hostname: resolved.env.HOST,
}
}
function handleProcessError(error: unknown, type: string) {
useLogger().withError(error).error(type)
}
export async function runApiServer(): Promise<void> {
const { app: honoApp, injectWebSocket, port, hostname } = await createApp()
const server = serve({ fetch: honoApp.fetch, port, hostname })
injectWebSocket(server)
process.on('uncaughtException', error => handleProcessError(error, 'Uncaught exception'))
process.on('unhandledRejection', error => handleProcessError(error, 'Unhandled rejection'))
await new Promise<void>((resolve, reject) => {
server.once('close', () => resolve())
server.once('error', error => reject(error))
})
}