#!/bin/bash

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

# Load common variables and helpers
source ./experimental_helper.sh

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

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=30

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup_migration() {
	yunohost app remove $app
	app=garradin ynh_restore_upgradebackup
}

ynh_clean_setup () {
	# Restore it if the upgrade fails
	if [[ $migration_process -eq 1 ]]; then
		ynh_clean_setup_migration
	else
		ynh_restore_upgradebackup
	fi
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# If secret_key doesn't exist, create it
if [[ -z "$secret_key" ]]; then
	secret_key=$(ynh_string_random --length=50)
	ynh_app_setting_set --app=$app --key=secret_key --value=$secret_key
fi

#=================================================
# MIGRATION FROM Garradin
#=================================================

[[ $YNH_APP_ID == "garradin" ]] \
	&& [[ "$(cat "$install_dir/VERSION")" != 1.2.4 ]] \
	&& ynh_die --message "It looks like that you have an old Garradin installed. You need to first upgrade your Garradin instance (id: $garradin_migrate_id) and after to migrate to Paheko."

ynh_handle_app_migration --migration_id=garradin --migration_list=garradin_migrations

if [[ $migration_process -eq 1 ]]; then
	install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)
	ynh_permission_update --permission="main" --add="all_users"
	ynh_permission_update --permission="main" --add="visitors"
fi

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=5

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$install_dir" --keep="association.sqlite squelettes/ data/ skel-dist/ config.local.user.php"
fi

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

#=================================================
# PHP-FPM CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=2

# Create a dedicated PHP-FPM config
ynh_add_fpm_config

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..." --weight=5

if ynh_compare_current_package_version --comparison lt --version 1.1.15~ynh1; then
	ynh_add_config --template="config.local.user.php" --destination="$install_dir/config.local.user.php"
fi

ynh_add_config --template="config.local.php" --destination="$install_dir/config.local.php"
ynh_add_config --template="config.local.yunohost.php" --destination="$install_dir/config.local.yunohost.php"
# NOTE: Don't overwrite config.local.user.php

# Permissions on files and directories
chmod -R o-rwx "$install_dir"
chown -R $app:www-data "$install_dir"
find "$install_dir" -type d -exec chmod 550 {} +
find "$install_dir" -type f -exec chmod 440 {} +
find "$install_dir/data" -type d -exec chmod 770 {} +
find "$install_dir/data" -type f -exec chmod 660 {} +
chmod 440 "$install_dir/config.local.php"
chmod 440 "$install_dir/config.local.yunohost.php"
chmod 660 "$install_dir/config.local.user.php"

#=================================================
# FINALISE UPGRADE
#=================================================
ynh_script_progression --message="Finalise upgrade" --weight=1

ynh_local_curl "/admin/index.php"
sleep 5
ynh_local_curl "/index.php"

#=================================================
# FINISH MIGRATION PROCESS
#=================================================

if [[ $migration_process -eq 1 ]]; then
	echo "Garradin has been successfully migrated to Paheko! \
	A last scheduled operation will run in a couple of minutes to finish the \
	migration in YunoHost side. Do not proceed any application operation while \
	you don't see Garradin as installed." >&2

	# Execute a post migration script after the end of this upgrade.
	# Mainly for some cleaning
	script_post_migration=garradin_post_migration.sh
	ynh_replace_string --match_string __OLD_APP__ --replace_string "$old_app" --target_file ../conf/$script_post_migration
	ynh_replace_string --match_string __NEW_APP__ --replace_string "$app" --target_file ../conf/$script_post_migration
	cp ../conf/$script_post_migration /tmp
	chmod +x /tmp/$script_post_migration
	(cd /tmp; echo "/tmp/$script_post_migration > /tmp/$script_post_migration.log 2>&1" | at now + 2 minutes)
fi

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

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