#!/bin/bash

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

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

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

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
admin=$(ynh_app_setting_get --app=$app --key=admin)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)



=================================================
# CHECK VERSION
#=================================================

### This helper will compare the version of the currently installed app and the version of the upstream package.
### $upgrade_type can have 2 different values
### - UPGRADE_APP if the upstream app version has changed
### - UPGRADE_PACKAGE if only the YunoHost package has changed
### ynh_check_app_version_changed will stop the upgrade if the app is up to date.
### UPGRADE_APP should be used to upgrade the core app only if there's an upgrade to do.
upgrade_type=$(ynh_check_app_version_changed)

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

# If db_name doesn't exist, create it
if [ -z "$db_name" ]; then
	db_name=$(ynh_sanitize_dbid --db_name=$app)
	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
	final_path=/var/www/$app
	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
fi
#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --time --weight=1

# 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
# N.B. : this is for app installations before YunoHost 2.7
# where this value might be something like /foo/ or foo/
# instead of /foo ....
# If nobody installed your app before 2.7, then you may
# safely remove this line
path_url=$(ynh_normalize_url_path --path_url=$path_url)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
# Download, check integrity, uncompress and patch the source from app.src
# Create a temporary directory along with /user/plugin sub directory in it
tmpdir="$(mktemp -d)"
mkdir -p "$tmpdir/user/"

# Backup the app files in the temp dir
cp -a "$final_path/index.php" "$tmpdir"
cp -a "$final_path/.htaccess" "$tmpdir"
cp -a "$final_path/user/config.php" "$tmpdir/user"

# Remove the app directory securely
ynh_secure_remove --file="$final_path"

# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path"

# Copy the app files from tmp to final_path
cp -a "$tmpdir/index.php" "$final_path"
cp -a "$tmpdir/.htaccess" "$final_path"
cp -a "$tmpdir/user/config.php" "$final_path/user"

# The script "add_sso_conf.py" will just add en entry for the path "/admin" in the sso conf.json.persistent file in the cathegory "protected_urls".
cp ../conf/add_sso_conf.py $final_path
cp ../conf/remove_sso_conf.py $final_path
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain"   --target_file="$final_path/add_sso_conf.py"
if [ "$path_url" != "/" ]; then
	ynh_replace_string --match_string="__PATH__"   --replace_string="$path_url" --target_file="$final_path/add_sso_conf.py"
    ynh_replace_string --match_string="__PATH__"   --replace_string="$path_url" --target_file="$final_path/remove_sso_conf.py"
else
	ynh_replace_string --match_string="__PATH__"   --replace_string="" --target_file="$final_path/add_sso_conf.py"
    ynh_replace_string --match_string="__PATH__"   --replace_string="" --target_file="$final_path/remove_sso_conf.py"
fi
ynh_replace_string --match_string="__DOMAIN__" --replace_string="$domain"   --target_file="$final_path/remove_sso_conf.py"

#remove tmp dir
rm -Rf "$tmpdir"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading nginx web server configuration..." --time --weight=1

# Create a dedicated nginx config
if [ "$path_url" != "/" ]; then
	ynh_replace_string --match_string="__PATHTOCHANGE__" --replace_string="$path_url" --target_file="../conf/nginx.conf"
else
	ynh_replace_string --match_string="__PATHTOCHANGE__"  --replace_string=" "         --target_file="../conf/nginx.conf"
fi

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --time --weight=1

ynh_install_app_dependencies $pkg_dependencies

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --time --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading php-fpm configuration..." --time --weight=1

# Create a dedicated php-fpm config
ynh_add_fpm_config

# Verify the checksum and backup the file if it's different
ynh_backup_if_checksum_is_different --file="$final_path/user/config.php"
# Recalculate and store the config file checksum into the app settings
ynh_store_file_checksum --file="$final_path/user/config.php"

# Set right permissions for curl installation
chown -R $app: $final_path

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

ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"

# Restrict access to admin only
yunohost app addaccess --users=$admin $app
yunohost app ssowatconf


#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..." --time --weight=1

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================

ynh_script_progression --message="Upgrade of $app completed" --time --last