prep for release

app.config.js

@@ -0,0 +1,37 @@
+const packageJson = require('./package.json');
+const release = require('./release.json');
+
+const DISTRIBUTIONS = new Set(['development', 'github', 'google-play']);
+const BLOCKED_ANDROID_PERMISSIONS = [
+  'android.permission.READ_EXTERNAL_STORAGE',
+  'android.permission.RECORD_AUDIO',
+  'android.permission.SYSTEM_ALERT_WINDOW',
+  'android.permission.WRITE_EXTERNAL_STORAGE',
+];
+
+module.exports = ({ config }) => {
+  const distribution = (process.env.ASTRA_DISTRIBUTION ?? 'development').trim();
+  if (!DISTRIBUTIONS.has(distribution)) {
+    throw new Error(
+      `ASTRA_DISTRIBUTION must be one of ${Array.from(DISTRIBUTIONS).join(', ')}; received ${JSON.stringify(distribution)}.`
+    );
+  }
+
+  if (!Number.isInteger(release.androidVersionCode) || release.androidVersionCode <= 0) {
+    throw new Error('release.json androidVersionCode must be a positive integer.');
+  }
+
+  return {
+    ...config,
+    version: packageJson.version,
+    android: {
+      ...config.android,
+      versionCode: release.androidVersionCode,
+      blockedPermissions: BLOCKED_ANDROID_PERMISSIONS,
+    },
+    extra: {
+      ...config.extra,
+      distribution,
+    },
+  };
+};