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packages/metamigo-cli/postgraphile.ts

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+import { writeFileSync } from "fs";
+import {
+  getIntrospectionQuery,
+  graphqlSync,
+  lexicographicSortSchema,
+  printSchema,
+} from "graphql";
+import { createPostGraphileSchema } from "postgraphile";
+import { Pool } from "pg";
+import { loadConfig } from "config";
+import { getPostGraphileOptions } from "db";
+
+export const exportGraphqlSchema = async (): Promise<void> => {
+  const config = await loadConfig();
+
+  const rootPgPool = new Pool({
+    connectionString: config.db.connection,
+  });
+  const exportSchema = `../../data/schema.graphql`;
+  const exportJson = `../../frontend/lib/graphql-schema.json`;
+  try {
+    const schema = await createPostGraphileSchema(
+      config.postgraphile.authConnection,
+      "app_public",
+      getPostGraphileOptions()
+    );
+    const sorted = lexicographicSortSchema(schema);
+    const json = graphqlSync(schema, getIntrospectionQuery());
+    writeFileSync(exportSchema, printSchema(sorted));
+    writeFileSync(exportJson, JSON.stringify(json));
+
+    console.log(`GraphQL schema exported to ${exportSchema}`);
+    console.log(`GraphQL schema json exported to ${exportJson}`);
+  } finally {
+    rootPgPool.end();
+  }
+};