feat(typegen): add swift template (#779)

* feat(typegen): add swift template

* test: add test case for table with identity other than id

* update test snapshots

* test: add public access control test case for swift generator

* feat: generate materializedviews, views and composite types for swift

* refactor swift typegen

package.json

@@ -24,6 +24,7 @@
     "docs:export": "PG_META_EXPORT_DOCS=true node --loader ts-node/esm src/server/server.ts > openapi.json",
     "gen:types:typescript": "PG_META_GENERATE_TYPES=typescript node --loader ts-node/esm src/server/server.ts",
     "gen:types:go": "PG_META_GENERATE_TYPES=go node --loader ts-node/esm src/server/server.ts",
+    "gen:types:swift": "PG_META_GENERATE_TYPES=swift node --loader ts-node/esm src/server/server.ts",
     "start": "node dist/server/server.js",
     "dev": "trap 'npm run db:clean' INT && run-s db:clean db:run && nodemon --exec node --loader ts-node/esm src/server/server.ts | pino-pretty --colorize",
     "test": "run-s db:clean db:run test:run db:clean",

src/server/constants.ts

@@ -1,6 +1,7 @@
 import crypto from 'crypto'
 import { PoolConfig } from 'pg'
 import { getSecret } from '../lib/secrets.js'
+import { AccessControl } from './templates/swift.js'
 
 export const PG_META_HOST = process.env.PG_META_HOST || '0.0.0.0'
 export const PG_META_PORT = Number(process.env.PG_META_PORT || 1337)
@@ -40,7 +41,8 @@ export const GENERATE_TYPES_INCLUDED_SCHEMAS = GENERATE_TYPES
   : []
 export const GENERATE_TYPES_DETECT_ONE_TO_ONE_RELATIONSHIPS =
   process.env.PG_META_GENERATE_TYPES_DETECT_ONE_TO_ONE_RELATIONSHIPS === 'true'
-
+export const GENERATE_TYPES_SWIFT_ACCESS_CONTROL =
+  (process.env.PG_META_GENERATE_TYPES_SWIFT_ACCESS_CONTROL as AccessControl) || 'internal'
 export const DEFAULT_POOL_CONFIG: PoolConfig = {
   max: 1,
   connectionTimeoutMillis: PG_CONN_TIMEOUT_SECS * 1000,

src/server/routes/generators/swift.ts

@@ -0,0 +1,40 @@
+import type { FastifyInstance } from 'fastify'
+import { PostgresMeta } from '../../../lib/index.js'
+import { DEFAULT_POOL_CONFIG } from '../../constants.js'
+import { extractRequestForLogging } from '../../utils.js'
+import { apply as applySwiftTemplate, AccessControl } from '../../templates/swift.js'
+import { getGeneratorMetadata } from '../../../lib/generators.js'
+
+export default async (fastify: FastifyInstance) => {
+  fastify.get<{
+    Headers: { pg: string }
+    Querystring: {
+      excluded_schemas?: string
+      included_schemas?: string
+      access_control?: AccessControl
+    }
+  }>('/', async (request, reply) => {
+    const connectionString = request.headers.pg
+    const excludedSchemas =
+      request.query.excluded_schemas?.split(',').map((schema) => schema.trim()) ?? []
+    const includedSchemas =
+      request.query.included_schemas?.split(',').map((schema) => schema.trim()) ?? []
+    const accessControl = request.query.access_control ?? 'internal'
+
+    const pgMeta: PostgresMeta = new PostgresMeta({ ...DEFAULT_POOL_CONFIG, connectionString })
+    const { data: generatorMeta, error: generatorMetaError } = await getGeneratorMetadata(pgMeta, {
+      includedSchemas,
+      excludedSchemas,
+    })
+    if (generatorMetaError) {
+      request.log.error({ error: generatorMetaError, request: extractRequestForLogging(request) })
+      reply.code(500)
+      return { error: generatorMetaError.message }
+    }
+
+    return applySwiftTemplate({
+      ...generatorMeta,
+      accessControl,
+    })
+  })
+}

src/server/routes/index.ts

@@ -20,6 +20,7 @@ import TypesRoute from './types.js'
 import ViewsRoute from './views.js'
 import TypeScriptTypeGenRoute from './generators/typescript.js'
 import GoTypeGenRoute from './generators/go.js'
+import SwiftTypeGenRoute from './generators/swift.js'
 import { PG_CONNECTION, CRYPTO_KEY } from '../constants.js'
 
 export default async (fastify: FastifyInstance) => {
@@ -65,4 +66,5 @@ export default async (fastify: FastifyInstance) => {
   fastify.register(ViewsRoute, { prefix: '/views' })
   fastify.register(TypeScriptTypeGenRoute, { prefix: '/generators/typescript' })
   fastify.register(GoTypeGenRoute, { prefix: '/generators/go' })
+  fastify.register(SwiftTypeGenRoute, { prefix: '/generators/swift' })
 }

src/server/server.ts

@@ -9,12 +9,14 @@ import {
   GENERATE_TYPES,
   GENERATE_TYPES_DETECT_ONE_TO_ONE_RELATIONSHIPS,
   GENERATE_TYPES_INCLUDED_SCHEMAS,
+  GENERATE_TYPES_SWIFT_ACCESS_CONTROL,
   PG_CONNECTION,
   PG_META_HOST,
   PG_META_PORT,
 } from './constants.js'
 import { apply as applyTypescriptTemplate } from './templates/typescript.js'
 import { apply as applyGoTemplate } from './templates/go.js'
+import { apply as applySwiftTemplate } from './templates/swift.js'
 import { getGeneratorMetadata } from '../lib/generators.js'
 
 const logger = pino({
@@ -52,6 +54,11 @@ async function getTypeOutput(): Promise<string | null> {
         detectOneToOneRelationships: GENERATE_TYPES_DETECT_ONE_TO_ONE_RELATIONSHIPS,
       })
       break
+    case 'swift':
+      output = await applySwiftTemplate({
+        ...generatorMetadata,
+        accessControl: GENERATE_TYPES_SWIFT_ACCESS_CONTROL,
+      })
     case 'go':
       output = applyGoTemplate(generatorMetadata)
       break