#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --time --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
admin_mail=$(ynh_app_setting_get --app=$app --key=email)
admin=$(ynh_app_setting_get --app=$app --key=admin)

#=================================================
# 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
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --time --weight=1

# 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

#=================================================
# 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)

# 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

# Remove files for upgrade compatibilty from previous versions of Friendica 
if [ -f $final_path/.htconfig.php ]; then
	rm "$final_path/.htconfig.php"
fi

if [ -f $final_path/.htconfig.php ]; then
	rm "$final_path/config/local.ini.php"
fi


# If admin_mail setting doesn't exist, create it
if [ -z $admin_mail ]; then	
	admin_mail=$(sudo yunohost user info $admin | grep "mail:" | cut -d' ' -f2)
	ynh_app_setting_set --app=$app --key=email --value=$admin_mail
fi

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --time --weight=1

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

# Copy config file for correct place
cp -f "/var/www/$app/config/local-sample.config.php" "/var/www/$app/config/local.config.php"

# Replace strings in config file
ynh_replace_string --match_string="your.mysqlhost.com" --replace_string="localhost"                 --target_file="$final_path/config/local.config.php"
ynh_replace_string --match_string="mysqlusername"      --replace_string="$db_name"                  --target_file="$final_path/config/local.config.php"
ynh_replace_string --match_string="mysqldatabasename"  --replace_string="$db_name"                  --target_file="$final_path/config/local.config.php"
ynh_replace_string --match_string="mysqlpassword"      --replace_string="$db_pwd"                  --target_file= "$final_path/config/local.config.php"
ynh_replace_string --match_string="'admin_email' => '',"      --replace_string="'admin_email' => '$admin_mail'," --target_file="$final_path/config/local.config.php"
ynh_replace_string --match_string="REGISTER_OPEN"  --replace_string="REGISTER_CLOSED" --target_file="$final_path/config/local.config.php"


#Copy Addons
rm -Rf "$final_path/addon"
ynh_setup_source --dest_dir="$final_path/addon" --source_id="addons"

# 3 - some extra folders
sudo chmod -R 775 $final_path/view/smarty3


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

# 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



#=================================================
# STORE THE CONFIG FILE CHECKSUM
#=================================================

### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.
ynh_backup_if_checksum_is_different --file="$final_path/config/local.config.php"
# Recalculate and store the checksum of the file for the next upgrade.
ynh_store_file_checksum --file="$final_path/config/local.config.php"

# Set up cron job
ynh_replace_string --match_string="__YNH_WWW_PATH__" --replace_string="$final_path" --target_file="../conf/poller-cron"
ynh_replace_string --match_string="__USER__" --replace_string="$app" --target_file="../conf/poller-cron"
ynh_restore_file  --origin_path="../conf/poller-cron" --dest_path="/etc/cron.d/$app"

# Run composer 
(cd $final_path && sudo php bin/composer.phar install)
(cd $final_path && sudo bin/console config system addon ldapauth)

# Set app as owner
chown -R $app: $final_path

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Upgrading SSOwat configuration..." --time --weight=1

# unprotected_uris allows SSO credentials to be passed anyway.
ynh_app_setting_set --app=$app --key=unprotected_uris --value="/"

#=================================================
# 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