ZotMeal

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About

ZotMeal is a cross-platform React Native Expo application. A summary of the libraries we use are listed below.

Technology

Frontend

• Expo - Universal framework for React Native.
• Tamagui - Universal UI component library for React Native.

Backend

• Drizzle - ORM for Postgres.
• AWS - RDS and Lambda.
• Serverless Framework - Framework for cloud resources such as AWS Lambda.
• tRPC - Typesafe RPCs.

Backend ERD Diagram

Getting Started

Pre-requisites

1. Install Node.js. This allows you to run JavaScript on your computer (outside of a browser). This is best done with a version manager that allows you to easily switch between Node.js versions based on the requirements of different projects. Try using any of the following.

   • nvm - Node-Version-Manager.
   • fnm - Fast-Node-Manager.
   • nvm-windows

   If none of those work for any reason, you can defer to your Operating System's package manager or the downloads from the official website. We will be using the latest LTS version, 20.10.0, lts/iron.

2. Install pnpm. This is our package manager of choice for this project. It's responsible for installing, uninstalling, and keeping track of the app's dependencies. npm install --global pnpm

3. Make sure to have docker installed, which can be installed from the official website. It will allow you to

   • run the local postgres database required for backend functions.
   • run backend tests that rely on Testcontainers.

Developing

1. Clone the ZotMeal repository or your fork. git clone https://github.com/icssc/ZotMeal.git

2. Change your node version to the one specified in the .nvmrc nvm use or fnm use. In particular, we will be using Node v20.

3. Navigate to the root directory and install the dependencies. cd ZotMeal && pnpm install

4. To start a local Postgres container database run the docker compose up in the root directory. This will automatically set up and run a test database using docker.

5. Create a new file called .env based on the example given in .env.development

6. Run pnpm db:push to push the schema to the docker database.

7. Start local development by running pnpm dev in /apps/expo and pnpm dev in /apps/server (or turbo dev in the root directory). The tRPC procedures are available on http://localhost:3000/<router.procedure>?input={field: value}

   # example
   http://localhost:3000/events.get

8. View the local website at http://localhost:8081 and/or with the Expo Go mobile app. As you make changes to the Expo application, those changes will be automatically reflected on the local website as well as the mobile app.

Troubleshooting

Sometimes, you may run into errors when trying to run some of the commands listed above. Here are some things that can help fix this:

Reinstall packages

• Run rm -force node_modules and pnpm install to reinstall all packages in the project

Ensure Node is correct version

• Node v20 (latest of that version)
• Check by running node -v

Clear expo cache

• Run npx expo start -c to clear the expo cache. This usually helps when pnpm dev gives an expo related error

Testing

Run turbo test at the root of the project.

Database

Run the following commands to pull data into your local database.

cd apps/server

# For daily test
pnpm test:daily

# For weekly test
pnpm test:weekly

Adding Workspaces

To add a new package run turbo gen workspace and follow the prompts