#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# LOAD SETTINGS
#=================================================

app=$YNH_APP_INSTANCE_NAME

# Retrieve app settings
domain=$(ynh_app_setting_get "$app" domain)
path_url=$(ynh_app_setting_get "$app" path)
port=$(ynh_app_setting_get "$app" port)
ssoenabled=$(ynh_app_setting_get "$app" ssoenabled)
public_site=$(ynh_app_setting_get "$app" public_site)
timezone=$(cat /etc/timezone)
final_path=$(ynh_app_setting_get "$app" final_path)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================

# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
	final_path="/var/www/$app"
	ynh_app_setting_set "$app" final_path "$final_path"
fi

#=================================================
# ACTIVE TRAP
#=================================================

# TODO: activate backup
# Backup the current version of the app
# ynh_backup_before_upgrade
# ynh_clean_setup () {
	# restore it if the upgrade fails
	# ynh_restore_upgradebackup
# }
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# CHECK THE PATH
#=================================================

# Normalize the URL path syntax
path_url=$(ynh_normalize_url_path $path_url)


#=================================================
# STANDARD UPGRADE STEPS
#=================================================

#=================================================
# UPGRADE DEPENDENCIES
#=================================================

# Since Movim 0.13, zmq is required
ynh_install_app_dependencies php5-zmq

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

# Init git repository as needed
if [ ! -d "${final_path}/.git" ]; then
    tmp_path=/tmp/movim-git
    sudo rm -rf "$tmp_path"

    # Download Movim source code
    (git clone "$GIT_REPO" "$tmp_path" \
       && cd "$tmp_path" && git checkout "$HEAD_COMMIT") \
      || ynh_die "Unable to download Movim source code."
    sudo cp "${final_path}/config/db.inc.php" "${tmp_path}/config/db.inc.php"

    # Replace current source code
    sudo rm -rf "$final_path"
    sudo mv "$tmp_path" "$final_path"
    sudo chown -R movim:www-data "$final_path"

    # Install composer for PHP dependencies
    curl -sS https://getcomposer.org/installer \
        | exec_cmd php -- --install-dir="$final_path"
fi

# Update Movim source code
(exec_cmd git fetch origin \
   && exec_cmd git reset --hard "$HEAD_COMMIT") \
  || ynh_die "Unable to download Movim source code."
## TODO: consider installation in a subpath
exec_cmd sed -i "s@'/ws/'@'${path_url%/}/ws/'@g" \
    "${final_path}/app/assets/js/movim_websocket.js"

#=================================================
# CREATE DEDICATED USER
#=================================================

# Create movim user if not exists and set permissions
ynh_system_user_exists movim \
  || sudo useradd -d /var/www/movim -s /bin/sh movim

#=================================================
# SET PERMISSIONS
#=================================================

sudo chown -R movim:www-data "$final_path"
sudo find "${final_path}/" -type f -print0 | sudo xargs -0 chmod 0644
sudo find "${final_path}/" -type d -print0 | sudo xargs -0 chmod 0755
sudo chmod 400 "${final_path}/config/db.inc.php"

#=================================================
# install PHP dependencies
#=================================================

# Update PHP dependencies using composer
(exec_cmd php composer.phar config --global discard-changes true \
 && exec_cmd php composer.phar install --no-interaction) \
  || ynh_die "Unable to update Movim dependencies."

#=================================================
# Upgrade Movim Databas
#=================================================

# Upgrade Movim database as needed
exec_cmd php mud.php db --set

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================

# Reset SSO parameters
ynh_app_setting_delete "$app" protected_uris
ynh_app_setting_delete "$app" skipped_uris
sudo yunohost app clearaccess movim

# Replace old public_site variable (if exists) by ssoenabled
if [ ! -z "$public_site" ]; then
    [[ $public_site = "Yes" ]] \
      && ssoenabled="No" \
      || ssoenabled="Yes"
    ynh_app_setting_delete "$app" public_site
    ynh_app_setting_set "$app" ssoenabled "$ssoenabled"
fi

#=================================================
# SETUP SSOWAT
#=================================================

# SSOwat configuration
if [[ "$ssoenabled" = "No" ]]; then
    ynh_app_setting_set "$app" skipped_uris "/"
    exec_cmd php mud.php config --xmppwhitelist=$domain
    sudo yunohost app ssowatconf
else
    ynh_app_setting_set "$app" unprotected_uris "/"
    apply_sso_patch
fi


#=================================================
# SETUP SYSTEMD
#=================================================

# Update init scripts
sudo sed -i "s@YHURL@${domain}${path_url}@g" ../conf/movim.{service,init}
sudo sed -i "s@YHDIR@${final_path}@g" ../conf/movim.{service,init}
sudo sed -i "s@YHPORT@${port}@g" ../conf/movim.{service,init}
if [ -d /run/systemd/system ]; then
    sudo rm -f /lib/systemd/system/movim.service
    sudo cp ../conf/movim.service /etc/systemd/system/
    sudo systemctl daemon-reload
else
    sudo /etc/init.d/movim stop
    sudo cp ../conf/movim.init /etc/init.d/movim
    sudo chmod 755 /etc/init.d/movim
    sudo update-rc.d movim defaults
    sudo /etc/init.d/movim start
fi

#=================================================
# PHP-FPM CONFIGURATION
#=================================================

# Update php-fpm configuration
sed -i "s@YHTZ@$timezone@g" ../conf/php-fpm.conf
sudo cp ../conf/php-fpm.conf /etc/php5/fpm/pool.d/movim.conf

#=================================================
# NGINX CONFIGURATION
#=================================================

# Nginx configuration
sed -i "s@PATHTOCHANGE@$path_url@g" ../conf/nginx.conf
sed -i "s@ALIASTOCHANGE@$final_path/@g" ../conf/nginx.conf
sed -i "s@YHPORT@$port@g" ../conf/nginx.conf
sed -i "s@//ws/@/ws/@g" ../conf/nginx.conf # Avoid duplicate /
sudo cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/movim.conf

#=================================================
# RELOAD SERVICES
#=================================================

# Reload services
sudo service movim restart
sudo service php5-fpm restart
sudo service nginx reload