# LingDocs Dictionary Monorepo

[![Netlify Status](https://api.netlify.com/api/v1/badges/65b633a2-f123-4fcd-91bc-5e6acda43256/deploy-status)](https://app.netlify.com/sites/lingdocs-dictionary/deploys)
![Website CI](https://github.com/lingdocs/lingdocs-main/actions/workflows/website-ci.yml/badge.svg)
![Functions CI](https://github.com/lingdocs/lingdocs-main/actions/workflows/functions-ci.yml/badge.svg)
![Account Deploy](https://github.com/lingdocs/lingdocs-main/actions/workflows/deploy-account.yml/badge.svg)
![Functions Deploy](https://github.com/lingdocs/lingdocs-main/actions/workflows/deploy-functions.yml/badge.svg)

## Contents

This monorepo contains:
 - `/dictionary-client` the frontend of the dictionary, a React SPA
 - `/account` a backend authentication server
 - `/functions` backend Firebase functions for use with the dictionary

### Dictionary Client

SPA Dictionary Frontend

Use [Yarn](https://yarnpkg.com/).

```sh
cd website
yarn install
```

#### Development

```sh
yarn start
```

### Account

Backend authentication server build on express / passport

#### Development

Use [npm](https://www.npmjs.com/).

```sh
cd account
npm install
```

### Functions

Backend Firebase functions

Use [npm](https://www.npmjs.com/).

```sh
cd functions
npm install
```

#### Development

```sh
npm run serve
```

## Architecture

![LingDocs Pashto Dictioanry App Architecture](./architecture.svg)

### Source Layer

#### GitHub Git Repo

The monorepo contains both a `website` folder for the frontend PWA and a `functions` folder for the backend functions. Both parts are written in TypeScript and are tied together using the types found in the `@lingdocs/pashto-inflector` package used by both as well as the types found in `./website/src/lib/backend-types.ts`

##### `./website` frontend

The front-end website code in `./website` is made with `create-react-app` and written in typescript with `jest` testing. It is a SPA and PWA.

The deployment is done automatically by netlify upon pushing to the `master` branch.

##### `./functions` backend

The backend code found in `./functions` and is written in TypeScript.

It is compiled and deployed automatically by the repo's GitHub Actions to Firebase Cloud Functions upon pushing to the `master` branch.

#### Google Sheets Dictionary Source

The content of the dictionary is based on a Google Sheets documents containing rows with the information for each dictionary entry. This can be edited by an editor directly, or through the website frontend with editor priveledges.

A cloud function in the backend compiles the dictionary into binary form (protobuf) then uploads it into a Google Cloud Storage bucket. The deployment is triggered from the website by an editor.

### Backend Layer

#### Firebase Functions

Serverless functions are used in conjungtion with Firebase Authentication to:
- check if a user has elevated priveledges
- receive edits or suggestions for the dictionary
- compile and publish the dictionary
- create and clean up elevated users in the CouchDB database

#### Account Server

Deployed through a self-hosted actions runner.

The runner is launched by this line in a crontab

```
@reboot ./actions-runner/run.sh
```

Process managed by pm2 using this `ecosystem.config.js`

```
module.exports = {
  apps : [{
    name   : "account",
    cwd : "./actions-runner/_work/lingdocs-main/lingdocs-main/account",
    script: "npm",
    args: "start",
    env: {
        NODE_ENVIRONMENT: "************",
        LINGDOCS_EMAIL_HOST: "**************",
        LINGDOCS_EMAIL_USER: "**************",
        LINGDOCS_EMAIL_PASS: "*****************",
        LINGDOCS_COUCHDB: "****************",
        LINGDOCS_ACCOUNT_COOKIE_SECRET: "******************",
        LINGDOCS_ACCOUNT_GOOGLE_CLIENT_SECRET: "******************",
        LINGDOCS_ACCOUNT_TWITTER_CLIENT_SECRET: "******************",
        LINGDOCS_ACCOUNT_GITHUB_CLIENT_SECRET: "******************",
        LINGDOCS_ACCOUNT_RECAPTCHA_SECRET: "6LcVjAUcAAAAAPWUK-******************",
    }
  }]
}
```

```sh
pm2 start ecosystem.config.js
pm2 save
```

#### CouchDB

When a user upgrades their account level to `student` or `editor`:

1. A doc in the `_users` db is created with their Firebase Authentication info, account level, and a password they can use for syncing their personal wordlistdb
2. A user database is created (by the firebase functions - *not* by the couchdb_peruser) which they use to sync their personal wordlist.  

There is also a `review-tasks` database which is used to store all the review tasks for editors and syncs with the review tasks in the app for the editor(s). 

#### Google Cloud Storage

Contains:

- `dict` - the dictionary content in protobuf format
- `dict-info` - information about the version of the currently available dictionary in protobuf format

The website fetches `dict-info` and `dict` as needed to check for the latest dictionary version and download it into memory/`lokijs`

### Frontend Layer

#### PWA

The frontend is a static-site PWA/SPA built with `create-react-app` (React/TypeScript) and deployed to Netlify.