#!/bin/bash
set -e # Exit on error

# Retrieve arguments
domain=$(sudo yunohost app setting mattermost domain)
is_public=$(sudo yunohost app setting mattermost is_public)

# Cleanup and restart if exit with an error
function cleanup_and_restart
{
    set +e
    rm "mattermost.tar.gz"
    sudo supervisorctl start mattermost
    exit 1
}
trap cleanup_and_restart ERR

# Stop server
sudo supervisorctl stop mattermost

# Download code
root_path=$(pwd)/..
final_path=/var/www/mattermost
config_file=$final_path/config/config.json
backup_config_file=/tmp/config.json

version=$(cat $root_path/VERSION)
wget -q "https://github.com/mattermost/platform/releases/download/${version}/mattermost.tar.gz"

# Backup configuration file
sudo cp -f $config_file $backup_config_file

# Copy new code
sudo rm -rf $final_path
sudo mkdir -p $final_path
sudo tar -xvz --file "mattermost.tar.gz" --directory $final_path --strip-components 1
rm -f "mattermost.tar.gz"

# Restore configuration file
sudo cp -f $backup_config_file $config_file

# Restore file permissions
sudo chown -R www-data: $final_path

# Start server
sudo supervisorctl start mattermost