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+# LAV-SMS Installation and Deployment Guide for Linux Web Server
+
+This guide covers the complete process of installing and deploying the LAV-SMS application on a Linux web server.
+
+## Prerequisites
+
+- A Linux server (Ubuntu/Debian recommended)
+- Root or sudo access
+- Domain name pointed to your server (optional but recommended)
+
+## Step 1: Server Setup
+
+### Update System
+```bash
+sudo apt update
+sudo apt upgrade -y
+```
+
+### Install Required Packages
+```bash
+sudo apt install -y curl git unzip nginx software-properties-common
+```
+
+### Install PHP and Required Extensions
+```bash
+# Add PHP repository
+sudo add-apt-repository ppa:ondrej/php -y
+sudo apt update
+
+# Install PHP 8.1 and extensions
+sudo apt install -y php8.1 php8.1-cli php8.1-fpm php8.1-common php8.1-mysql php8.1-zip php8.1-gd php8.1-mbstring php8.1-curl php8.1-xml php8.1-bcmath php8.1-intl
+```
+
+### Install Composer
+```bash
+curl -sS https://getcomposer.org/installer | sudo php -- --install-dir=/usr/local/bin --filename=composer
+```
+
+### Install MySQL
+```bash
+sudo apt install -y mysql-server
+
+# Secure MySQL installation
+sudo mysql_secure_installation
+```
+
+### Install Node.js and NPM
+```bash
+curl -fsSL https://deb.nodesource.com/setup_16.x | sudo -E bash -
+sudo apt install -y nodejs
+```
+
+## Step 2: Database Setup
+
+### Create Database and User
+```bash
+sudo mysql -u root -p
+```
+
+Inside the MySQL prompt:
+```sql
+CREATE DATABASE lav_sms;
+CREATE USER 'lav_sms_user'@'localhost' IDENTIFIED BY 'your_strong_password';
+GRANT ALL PRIVILEGES ON lav_sms.* TO 'lav_sms_user'@'localhost';
+FLUSH PRIVILEGES;
+EXIT;
+```
+
+## Step 3: Application Deployment
+
+### Clone the Repository
+```bash
+cd /var/www
+sudo git clone https://github.com/4jean/lav_sms.git
+sudo chown -R www-data:www-data lav_sms
+cd lav_sms
+```
+
+### Install Dependencies
+```bash
+sudo -u www-data composer install --no-dev --optimize-autoloader
+sudo -u www-data npm install
+```
+
+### Configure Environment
+```bash
+sudo -u www-data cp .env.example .env
+sudo -u www-data php artisan key:generate
+```
+
+Edit the `.env` file:
+```bash
+sudo nano .env
+```
+
+Update the following variables:
+```
+APP_ENV=production
+APP_DEBUG=false
+APP_URL=https://your-domain.com
+
+DB_DATABASE=lav_sms
+DB_USERNAME=lav_sms_user
+DB_PASSWORD=your_strong_password
+
+# Add any SMS API credentials or other configuration here
+```
+
+### Build Assets
+```bash
+sudo -u www-data npm run build
+```
+
+### Run Migrations
+```bash
+sudo -u www-data php artisan migrate --seed
+```
+
+### Set Directory Permissions
+```bash
+sudo chown -R www-data:www-data /var/www/lav_sms
+sudo find /var/www/lav_sms -type f -exec chmod 644 {} \;
+sudo find /var/www/lav_sms -type d -exec chmod 755 {} \;
+sudo chmod -R 775 /var/www/lav_sms/storage
+sudo chmod -R 775 /var/www/lav_sms/bootstrap/cache
+```
+
+## Step 4: Web Server Configuration
+
+### Configure Nginx
+Create a new Nginx site configuration:
+```bash
+sudo nano /etc/nginx/sites-available/lav_sms
+```
+
+Add the following content:
+```nginx
+server {
+    listen 80;
+    server_name your-domain.com www.your-domain.com;
+    root /var/www/lav_sms/public;
+
+    add_header X-Frame-Options "SAMEORIGIN";
+    add_header X-Content-Type-Options "nosniff";
+
+    index index.php;
+
+    charset utf-8;
+
+    location / {
+        try_files $uri $uri/ /index.php?$query_string;
+    }
+
+    location = /favicon.ico { access_log off; log_not_found off; }
+    location = /robots.txt  { access_log off; log_not_found off; }
+
+    error_page 404 /index.php;
+
+    location ~ \.php$ {
+        fastcgi_pass unix:/var/run/php/php8.1-fpm.sock;
+        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
+        include fastcgi_params;
+    }
+
+    location ~ /\.(?!well-known).* {
+        deny all;
+    }
+}
+```
+
+Enable the site and restart Nginx:
+```bash
+sudo ln -s /etc/nginx/sites-available/lav_sms /etc/nginx/sites-enabled/
+sudo nginx -t
+sudo systemctl restart nginx
+```
+
+## Step 5: SSL Configuration (Recommended)
+
+### Install Certbot
+```bash
+sudo apt install -y certbot python3-certbot-nginx
+```
+
+### Obtain SSL Certificate
+```bash
+sudo certbot --nginx -d your-domain.com -d www.your-domain.com
+```
+
+Follow the prompts to complete the SSL setup.
+
+## Step 6: Final Configuration
+
+### Configure Scheduler
+Add Laravel scheduler to crontab:
+```bash
+sudo -u www-data crontab -e
+```
+
+Add the following line:
+```
+* * * * * cd /var/www/lav_sms && php artisan schedule:run >> /dev/null 2>&1
+```
+
+### Set Up Queue Worker (if needed)
+Create a systemd service file:
+```bash
+sudo nano /etc/systemd/system/laravel-worker.service
+```
+
+Add the following content:
+```
+[Unit]
+Description=Laravel Queue Worker
+After=network.target
+
+[Service]
+User=www-data
+Group=www-data
+WorkingDirectory=/var/www/lav_sms
+ExecStart=/usr/bin/php /var/www/lav_sms/artisan queue:work --sleep=3 --tries=3
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
+```
+
+Enable and start the service:
+```bash
+sudo systemctl enable laravel-worker
+sudo systemctl start laravel-worker
+```
+
+## Step 7: Application Maintenance
+
+### Update Application
+To update the application in the future:
+```bash
+cd /var/www/lav_sms
+sudo -u www-data git pull
+sudo -u www-data composer install --no-dev --optimize-autoloader
+sudo -u www-data npm install
+sudo -u www-data npm run build
+sudo -u www-data php artisan migrate
+sudo -u www-data php artisan cache:clear
+sudo -u www-data php artisan config:clear
+sudo -u www-data php artisan view:clear
+```
+
+### Backup Database
+Set up a regular backup schedule:
+```bash
+sudo nano /etc/cron.daily/backup-lav-sms-db
+```
+
+Add:
+```bash
+#!/bin/bash
+BACKUP_DIR="/var/backups/lav_sms"
+mkdir -p $BACKUP_DIR
+TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
+mysqldump -u lav_sms_user -p'your_strong_password' lav_sms > $BACKUP_DIR/lav_sms_$TIMESTAMP.sql
+find $BACKUP_DIR -type f -name "*.sql" -mtime +7 -delete
+```
+
+Make the script executable:
+```bash
+sudo chmod +x /etc/cron.daily/backup-lav-sms-db
+```
+
+## Troubleshooting
+
+### Check Logs
+Application logs:
+```bash
+sudo tail -f /var/www/lav_sms/storage/logs/laravel.log
+```
+
+Nginx logs:
+```bash
+sudo tail -f /var/log/nginx/error.log
+```
+
+PHP-FPM logs:
+```bash
+sudo tail -f /var/log/php8.1-fpm.log
+```
+
+### Common Issues
+1. **Permission errors**: Ensure proper ownership and permissions for storage and bootstrap/cache directories
+2. **Database connection issues**: Verify credentials in .env file
+3. **500 errors**: Check Laravel and Nginx logs for specifics
+4. **Blank page**: Enable APP_DEBUG=true temporarily to see errors