Fix iOS Podfile generation for receipt OCR

app.json

@@ -10,7 +10,7 @@
     "ios": {
       "supportsTablet": true,
       "bundleIdentifier": "com.beenvoice.app",
-      "buildNumber": "12",
+      "buildNumber": "13",
       "icon": "./assets/beenvoice.icon",
       "infoPlist": {
         "ITSAppUsesNonExemptEncryption": false,
@@ -94,7 +94,7 @@
         }
       ],
       [
-        "expo-mlkit-ocr",
+        "./plugins/withExpoMlkitOcrEnv.js",
         {
           "iosEngine": "auto"
         }

plugins/withExpoMlkitOcrEnv.js

@@ -0,0 +1,104 @@
+// @ts-check
+const { createRunOncePlugin, withDangerousMod } = require("@expo/config-plugins");
+const fs = require("fs");
+const path = require("path");
+
+const pkg = require("expo-mlkit-ocr/package.json");
+
+const DISABLE_LINE = "ENV['EXPO_MLKIT_OCR_DISABLE_MLKIT'] = '1'";
+const MARKER = "expo-mlkit-ocr: iOS Simulator MLKit handling";
+
+function resolveIosEngine(props = {}) {
+  const raw = props.iosEngine ?? "auto";
+  return raw === "auto" || raw === "mlkit" || raw === "vision" ? raw : "auto";
+}
+
+function stripMarkedBlock(podfile) {
+  const lines = podfile.split(/\r?\n/);
+  const next = [];
+
+  for (let i = 0; i < lines.length; i += 1) {
+    const line = lines[i];
+    if (!line.includes(MARKER)) {
+      next.push(line);
+      continue;
+    }
+
+    const markerIndent = (line.match(/^\s*/) ?? [""])[0].length;
+    while (i + 1 < lines.length) {
+      i += 1;
+      const candidate = lines[i];
+      const candidateIndent = (candidate.match(/^\s*/) ?? [""])[0].length;
+      if (candidate.trim() === "end" && candidateIndent <= markerIndent) {
+        break;
+      }
+    }
+  }
+
+  return next.join("\n");
+}
+
+function stripOrphanedMlkitArchPatch(podfile) {
+  return podfile
+    .replace(
+      /\n\s*end\s*\n\s*\n\s*installer\.aggregate_targets\.each do \|aggregate_target\|[\s\S]*?aggregate_target\.user_project\.save\s*\n\s*end\s*\n/g,
+      "\n",
+    )
+    .replace(
+      /\n\s*if ENV\['EXPO_MLKIT_OCR_DISABLE_MLKIT'\] == '1'\s*\n\s*installer\.pods_project\.targets\.each do \|target\|[\s\S]*?\n\s*end\s*\n/g,
+      "\n",
+    );
+}
+
+function insertDisableLine(podfile) {
+  const lines = podfile
+    .split(/\r?\n/)
+    .filter((line) => line.trim() !== DISABLE_LINE);
+
+  let insertAt = 0;
+  while (insertAt < lines.length && lines[insertAt].trim().startsWith("#")) {
+    insertAt += 1;
+  }
+
+  lines.splice(insertAt, 0, DISABLE_LINE);
+  return lines.join("\n");
+}
+
+/** @type {import('@expo/config-plugins').ConfigPlugin<{ iosEngine?: "auto" | "mlkit" | "vision", disableMlkitOnSimulator?: boolean }>} */
+function withExpoMlkitOcrEnv(config, props = {}) {
+  return withDangerousMod(config, [
+    "ios",
+    async (config) => {
+      const podfilePath = path.join(config.modRequest.platformProjectRoot, "Podfile");
+      if (!fs.existsSync(podfilePath)) {
+        return config;
+      }
+
+      const iosEngine = resolveIosEngine(props);
+      const shouldDisableMlkit =
+        iosEngine !== "mlkit" || props.disableMlkitOnSimulator === true;
+
+      let podfile = fs.readFileSync(podfilePath, "utf8");
+      podfile = stripMarkedBlock(podfile);
+      podfile = stripOrphanedMlkitArchPatch(podfile);
+
+      if (shouldDisableMlkit) {
+        podfile = insertDisableLine(podfile);
+      } else {
+        podfile = podfile
+          .split(/\r?\n/)
+          .filter((line) => line.trim() !== DISABLE_LINE)
+          .join("\n");
+      }
+
+      fs.writeFileSync(podfilePath, podfile.endsWith("\n") ? podfile : `${podfile}\n`);
+      return config;
+    },
+  ]);
+}
+
+module.exports = createRunOncePlugin(
+  withExpoMlkitOcrEnv,
+  "beenvoice-expo-mlkit-ocr-env",
+  pkg.version,
+);