#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --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_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
email=$(ynh_app_setting_get --app=$app --key=email)
admin=$(ynh_app_setting_get --app=$app --key=admin)
phpversion=$(ynh_app_setting_get --app=$app --key=phpversion)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=3

# 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)..." --weight=2

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

# 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 $final_path/.htconfig.php ]; then
	ynh_secure_remove "$final_path/.htconfig.php"
fi

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

# If admin_mail setting doesn't exist, create it
if [ -z $email ]; then
	email=$(ynh_user_get_info --username=$admin --key=mail)
	ynh_app_setting_set --app=$app --key=email --value=$email
fi

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

	ynh_app_setting_delete --app=$app --key=is_public
fi

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

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

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then

# Check if the repo can be updated with git
  if [ `cd $final_path && git rev-parse --is-inside-work-tree` ]; 
  then
    # Update through Git
	pushd "$final_path"
      git fetch
      git checkout stable
      git pull
      git reset --hard $version_commit
	popd
	pushd "$final_path/addon"
      git fetch
      git checkout stable
      git pull
      git reset --hard $addons_version_commit
	popd
# If Git is not present upgrade through manual method 
else

  # Create a temporary directory and backup smarty3 folder
	tmpdir="$(mktemp -d)"
	ynh_script_progression --message="Upgrading source files..." --weight=3
	cp -a "$final_path/view/smarty3" "$tmpdir/smarty3"

    # Remove the app directory securely
    ynh_secure_remove "$final_path"

    # 1 - Clone stable repo 
    git clone --quiet https://github.com/friendica/friendica.git -b stable "$final_path"
    # Reset branch to the level of update we needed
    pushd "$final_path"
    	git reset --hard $version_commit
    popd

    # 2 - Clone addons repo 
    git clone --quiet https://github.com/friendica/friendica-addons.git -b stable "$final_path/addon" 
    # Reset addons branch to the level of update we needed
    pushd "$final_path/addon"
    	git reset --hard $addons_version_commit
    popd
    
    # Restore the smarty3 folder
    cp -a "$tmpdir/smarty3" "$final_path/view/smarty3"
    ynh_secure_remove "$tmpdir"
  fi
fi

# Copy config file for correct place
ynh_add_config --template="../conf/local-sample.config.php" --destination="$final_path/config/local.config.php"

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

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

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=4

# Create a dedicated PHP-FPM config
ynh_add_fpm_config --package="$extra_php_dependencies"

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

ynh_add_config --template="../conf/cron" --destination="/etc/cron.d/$app"
chown root: "/etc/cron.d/$app"
chmod 644 "/etc/cron.d/$app"

# Run Composer
pushd "$final_path"
  ynh_exec_as "$app" php$phpversion bin/composer.phar install --no-dev --quiet
 	ynh_exec_as "$app" bin/console dbstructure update
	#ynh_exec_as "$app" bin/console config system addon ldapauth
popd

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

ynh_systemd_action --service_name=nginx --action=reload

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

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