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For mobile development, there are two servers, the prod server, and the test server. Make sure to switch the server URL to the proper value in  {{devdev-mobile/lib/helper/API.dart}} .

There are two parts to this onboarding process: front-end and back-end. For the front-end part, it takes around 2 hours to complete. The goal is to locally build and run the iOS app on the simulator/Xcode and test the App on your phone using Testflight. For the backend part, it takes around 2-3 hours and the goal is to build the container and try to access both the prod and test servers.

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1. Install Xcode from App Store
2. Install Flutter
   1. Use the response from ``flutter doctor`` flutter doctor  to guide you through any other necessary installations (e.g., Android Studio, Chrome, CocoaPods, etc.)
   2. We currently do not support the Android version of the App but it’s necessary to have Android Studio installed for Flutter to function properly. 
   3. If you encounter the "Bad CPU type in executable" error with ``flutter doctor`` flutter doctor , maybe this would help
   4. If you have trouble installing Cocoapods with ruby, try installing with ```brew brew install cocoapods```cocoapods 
3. Pull the frontend-mobile repo from https://github.com/DIAPER-Project
4. For local testing and development, use the test server by switching the server URL to ``https://mobile-test.diaper.cf:5001/api`` in ``devdev-mobile/lib/helper/API.dart``dart .
   1. Note: the server URL may get updates in the future, please refer to the infra team/documentation for the new server url.
5. Once ``flutter doctor`` flutter doctor  yields no error, proceed with the following steps in https://flutter.dev/docs/get-started/editor to build and run the app
   1. Navigate to the ``devdev-mobile`` mobile  directory.
   2. Simulation (two ways)
      1. You need to first open the iOS simulator by running ``open open -a Simulator`` Simulator  in the terminal and then run`` run flutter run``run .
      2. In VSCode, in the bottom toolbar, click "No Device," choose "iPhone 13" from the top drop-down menu, then run `` flutter run`` run  in the terminal.
   3. If you get a BUILD FAILED error of "No file or variants found for asset: assets/mobile_secrets.json", you need to create such a JSON file. The contents of this JSON file can be found in the DIAPER Confidential box (ask Liz for access) under "mobile secrets".

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For the TestFlight build, use the prod server by switching the server URL to ``https://mobile-prod.diaper.cf:5001/api`` in ``devdev-mobile/lib/helper/API.dart``dart . Note: the server URL may get updates in the future, please refer to the infra team/documentation for the new server URL.

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1. • When building the App, set the Runner to be any iOS device.
   • Make sure to update the ``Build`` Build  number to be the proper version when submitting
   • During ``ReRe-sign Runner`` Runner  step when distributing App, if you encounter ``Missing Missing private key`` key  error in the below screenshot, refer to Distribution certificate / private key not installed - Stack Overflow. 
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