# UNIT3D Update

_Whether you're upgrading from UNIT3D v8.3.3 to v9.0.1 or updating your PHP environment from 8.3 to 8.4, this tutorial offers a detailed guide to the entire process._

> [!IMPORTANT]   
> backup.

## 1. Create a Backup

UNIT3D provides built-in backup tools through PHP Artisan.

## 2. Table of Contents

- [Prerequisites](#3-prerequisites)
- [Update Procedures](#4-update-procedures)
  - [4.1 Enter Maintenance Mode & Prepare Meilisearch](#41-enter-maintenance-mode--prepare-meilisearch)
  - [4.2 Update PHP to 8.4](#42-update-php-to-84)
  - [4.3 Update UNIT3D](#43-update-unit3d)
  - [4.4 Database Migration Fix](#44-database-migration-fix)
- [Post-Update Procedures](#5-post-update-procedures)
- [Troubleshooting](#6-troubleshooting)

---

## 3. Prerequisites

- Complete backup in `~/tempBackup`
- Sudo privileges
- Current versions:
  - UNIT3D: **v8.3.3**
  - PHP: **8.3**
- Required tools:
  ```text
  curl, apt, nginx, mysql/mariadb, nano/micro
  ```

---

## 4. Update Procedures

### 4.1 Enter Maintenance Mode & Prepare Meilisearch

```bash
cd /var/www/html
php artisan down
```

**Meilisearch Update:**
```bash
sudo apt update
sudo apt upgrade
sudo systemctl stop meilisearch
sudo curl -L https://install.meilisearch.com | sudo sh
sudo mv ./meilisearch /usr/local/bin/
sudo chmod +x /usr/local/bin/meilisearch
sudo rm -rf /var/lib/meilisearch/data
```
Proceed with the following command:

> **Note:**
> This step had to be repeated.

```bash
sudo chmod +x /usr/local/bin/meilisearch
sudo systemctl start meilisearch
```

### 4.2 Update PHP to 8.4

Add PHP Repository & Update Package Lists:

```bash
sudo add-apt-repository ppa:ondrej/php
sudo apt update
```

Backup Current PHP Packages & Install PHP 8.4:

```bash
sudo dpkg -l | grep php | tee ~/tempBackup/packages.txt
sudo apt install php8.4-common php8.4-cli php8.4-fpm php8.4-{redis,bcmath,curl,dev,gd,igbinary,intl,mbstring,mysql,opcache,readline,xml,zip}
```

**NGINX Configuration Update:**
1. Edit Nginx configuration file::

```bash
sudo nano /etc/nginx/sites-available/default
```

2. Update the `fastcgi_pass` directive to use the PHP 8.4 socket

> **Note:**  
> Locate the line  
> ```nginx
> fastcgi_pass unix:/var/run/php/***.sock;
> ```  
> and replace `***` with your site’s identifier.  

For example, to point to the PHP 8.4 FPM socket:

```nginx
fastcgi_pass unix:/var/run/php/php8.4-fpm.sock;
```
Save and exit the editor.

3. Test the Nginx configuration:
```bash
sudo nginx -t
```

4. Restart Nginx and PHP-FPM, and Remove PHP 8.3:

```bash
sudo nginx -t
sudo systemctl restart nginx
sudo systemctl restart php8.4-fpm 
sudo systemctl stop php8.3-fpm
sudo apt purge '^php8.3.*'
php -v
```

### 4.3 Update UNIT3D

```bash
cd /var/www/html
php artisan git:update
```

> [!NOTE]  
> During file conflicts:  
> - Backup conflicts to `~/tempBackup/fileConflicts.txt`
> - Generally recommend accepting all updates
> - After the update, it's a good idea to save any file conflicts for review

### 4.4 Database Migration Fix

During the update, you might encounter an error related to the tickets table

**Resolve NULL values in tickets table:**

1. Log in to MySQL:

```bash
mysql -u your_username -p
```

When prompted, enter your MySQL password. Once logged in, select the appropriate database by running:

```bash
USE your_database_name;
```

1. Fix the Null Values:

 Run the following SQL command to update any null entries in the `staff_read` column to 0:

```sql
UPDATE tickets SET staff_read = 0 WHERE staff_read IS NULL;
```

9. Exit MySQL:

```sql
exit;
```

2. Complete migrations:
```bash
php artisan migrate
```

---

## 5. Post-Update Procedures

**Final System Reset:**
```bash
sudo -u www-data composer install --prefer-dist --no-dev -o
sudo php artisan set:all_cache
bun install && bun run build
sudo systemctl restart php8.4-fpm
sudo supervisorctl reload
```

**Meilisearch Reindexing:**
```bash
sudo php artisan scout:sync-index-settings
sudo php artisan auto:sync_torrents_to_meilisearch --wipe
sudo php artisan auto:sync_people_to_meilisearch
```

**Bring System Online:**
```bash
php artisan up
```

---

## 6. Troubleshooting

**Common Issues:**
- **Migration Errors:** Ensure database user has ALTER privileges
- **PHP Version Mismatch:** Verify `php -v` and NGINX config
- **Meilisearch Failures:** Check `/var/log/meilisearch.log`

**Log Locations:**
```text
/var/www/html/storage/logs/laravel.log
/var/log/nginx/error.log
```