Add SMTP Email Service for LDAP User Notifications

.env

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+# This .env file is supposed to be used during production
+# Make sure to REPLACE the placeholders with your real values
+
+# Use internal LDAP server by default
+# When you want to use an external LDAP server, change the URL to the external server:
+# LDAP_URL=ldap://external-ldap-server:389
+LDAP_URL=ldap://ldap:389
+
+# The root distinguished name (DN) for your LDAP directory
+LDAP_BASE_DN=dc=applica,dc=com
+
+# Admin password for LDAP server
+LDAP_ADMIN_PASSWORD=admin
+
+# The distinguished name (DN) of the group which holds users that
+# are "leaders" of one or more fields. Used for mail notifications
+# whenever a new application for a field gets added
+LDAP_LEADER_DN=cn=fieldleader,ou=group,$LDAP_BASE_DN
+
+# The secret used to sign the JWT payload
+JWT_SECRET=verysecret

README.md

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+# `Applica` 👥
+
+A full-stack platform for managing user applications, designed for university clubs.
+
+## Development
+
+1. Start the required Docker containers with the `dev` profile:
+
+   ```bash
+   sudo docker-compose --profile dev up -d
+   ```
+
+2. Run the frontend or backend:
+
+- **Frontend** (`localhost:3000`):
+
+  ```bash
+  cd frontend
+  bun install
+  bun run dev
+  ```
+
+- **Backend** (`localhost:8080/api`):
+
+  ```bash
+  cd backend
+  bun install
+  bun run dev
+  ```
+
+## Production
+
+1. Start the production containers with the `prod` profile:
+
+   ```bash
+   sudo docker-compose --profile prod up -d
+   ```
+
+2. Make sure to configure your `.env` file with your LDAP URL.
+
+This will launch the frontend, backend, and a PostgreSQL database.

backend/.dockerignore

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+node_modules
+
+Dockerfile*
+.dockerignore
+.gitignore
+README.md
+.prettierrc.json
+eslint.config.mjs
+.env.development

backend/.env.development

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+# This .env is ONLY supposed to be used during development
+# Together with the `dev` docker profile: `docker-compose --profile dev`
+
+DATABASE_URL=postgres://postgres:password@localhost:5432/applica_db
+LDAP_URL=ldap://localhost:389
+LDAP_BASE_DN=dc=applica,dc=com
+LDAP_ADMIN_PASSWORD=admin
+LDAP_LEADER_DN=cn=fieldleader,ou=group,$LDAP_BASE_DN
+JWT_SECRET=verysecret
+SMTP_HOST=smtp.example.com
+SMTP_PORT=587
+SMTP_USER=your-email@example.com
+SMTP_PASS=your-email-password
+SMTP_FROM_NAME=Applica Admin
+SMTP_FROM_EMAIL=your-email@example.com

backend/.gitignore

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+# Based on https://raw.githubusercontent.com/github/gitignore/main/Node.gitignore
+
+# Logs
+
+logs
+_.log
+npm-debug.log_
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+.pnpm-debug.log*
+
+# Caches
+
+.cache
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# Runtime data
+
+pids
+_.pid
+_.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+
+lib-cov
+
+# Coverage directory used by tools like istanbul
+
+coverage
+*.lcov
+
+# nyc test coverage
+
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+
+bower_components
+
+# node-waf configuration
+
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+
+build/Release
+
+# Dependency directories
+
+node_modules/
+jspm_packages/
+
+# Snowpack dependency directory (https://snowpack.dev/)
+
+web_modules/
+
+# TypeScript cache
+
+*.tsbuildinfo
+
+# Optional npm cache directory
+
+.npm
+
+# Optional eslint cache
+
+.eslintcache
+
+# Optional stylelint cache
+
+.stylelintcache
+
+# Microbundle cache
+
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+
+.node_repl_history
+
+# Output of 'npm pack'
+
+*.tgz
+
+# Yarn Integrity file
+
+.yarn-integrity
+
+# dotenv environment variable files
+
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# parcel-bundler cache (https://parceljs.org/)
+
+.parcel-cache
+
+# Next.js build output
+
+.next
+out
+
+# Nuxt.js build / generate output
+
+.nuxt
+dist
+
+# Gatsby files
+
+# Comment in the public line in if your project uses Gatsby and not Next.js
+
+# https://nextjs.org/blog/next-9-1#public-directory-support
+
+# public
+
+# vuepress build output
+
+.vuepress/dist
+
+# vuepress v2.x temp and cache directory
+
+.temp
+
+# Docusaurus cache and generated files
+
+.docusaurus
+
+# Serverless directories
+
+.serverless/
+
+# FuseBox cache
+
+.fusebox/
+
+# DynamoDB Local files
+
+.dynamodb/
+
+# TernJS port file
+
+.tern-port
+
+# Stores VSCode versions used for testing VSCode extensions
+
+.vscode-test
+
+# yarn v2
+
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*
+
+# IntelliJ based IDEs
+.idea
+
+# Finder (MacOS) folder config
+.DS_Store

backend/.prettierrc.json

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+{
+  "trailingComma": "es5",
+  "tabWidth": 2,
+  "semi": false,
+  "singleQuote": true,
+  "printWidth": 80
+}

backend/Dockerfile

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+# Base image
+FROM oven/bun:1 AS base
+WORKDIR /usr/src/app
+ENV NODE_ENV=production
+
+# Stage 1
+FROM base AS install
+# Install dependencies
+COPY bun.lockb package.json ./
+RUN bun install --frozen-lockfile --production
+
+# Stage 2
+FROM base AS release
+# Copy artifacts
+WORKDIR /app
+COPY --from=install /usr/src/app/node_modules node_modules
+COPY . .
+# Run app with bun
+USER bun
+EXPOSE 8080/tcp
+ENTRYPOINT ["bun", "run", "src/index.ts"]

backend/README.md

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+To install dependencies:
+```sh
+bun install
+```
+
+To run:
+```sh
+bun run dev
+```
+
+open http://localhost:8080

backend/drizzle.config.ts

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+import { defineConfig } from 'drizzle-kit'
+
+export default defineConfig({
+  dialect: 'postgresql',
+  schema: './src/db/schema.ts',
+  out: './src/db/migrations',
+  dbCredentials: {
+    url: process.env['DATABASE_URL'] as string,
+  },
+})

backend/eslint.config.mjs

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+import globals from 'globals'
+import pluginJs from '@eslint/js'
+import tseslint from 'typescript-eslint'
+
+export default [
+  { files: ['**/*.{js,mjs,cjs,ts}'] },
+  {
+    languageOptions: { globals: globals.browser },
+    rules: {
+      '@typescript-eslint/explicit-function-return-type': 'error',
+      '@typescript-eslint/consistent-type-definitions': ['error', 'type'],
+    },
+  },
+  pluginJs.configs.recommended,
+  ...tseslint.configs.recommended,
+]