#!/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)
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)
port=$(ynh_app_setting_get --app=$app --key=port)
password=$(ynh_app_setting_get --app=$app --key=password)
admin=$(ynh_app_setting_get --app=$app --key=admin)
email=$(ynh_app_setting_get --app=$app --key=email)
mongo_version=$(ynh_app_setting_get --app=$app --key=mongo_version)

#=================================================
# 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=45

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	ynh_clean_check_starting
	# Restore it if the upgrade fails
	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=1

ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd"

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

# 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

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

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

# If mongo_version doesn't exist, create it
if [ -z "$mongo_version" ]; then
	mongo_version="$(mongod --version | grep -oP 'db version v\K.{0,3}')"
	ynh_app_setting_set --app=$app --key=mongo_version --value=$mongo_version
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=4

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

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=22
	# Remove the app directory securely
	ynh_secure_remove --file="$final_path"
	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path"
fi

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

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=7

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
ynh_exec_warn_less ynh_install_mongo --mongo_version=$mongo_version
ynh_exec_warn_less ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# CONFIGURE MONGOD
#=================================================
ynh_script_progression --message="Configuring mongod..." --weight=1

ynh_replace_string --match_string="#  engine:" --replace_string="  engine: wiredTiger" --target_file="/etc/mongod.conf"
ynh_replace_string --match_string="#replication:" --replace_string="replication:\n  replSetName: rs01" --target_file="/etc/mongod.conf"

ynh_exec_warn_less systemctl enable mongod --quiet
ynh_systemd_action --service_name=mongod --action=restart --log_path=/var/log/mongodb/mongod.log --line_match="Waiting for connections"

if ynh_exec_warn_less ynh_mongo_exec --command="printjson(rs.status())" | grep -q "no replset config has been received"; then
	ynh_exec_warn_less ynh_mongo_exec --command="printjson(rs.initiate())" --eval
fi

#==============================================
# INSTALL ROCKETCHAT
#==============================================
ynh_script_progression --message="Building $app... (this will take some time and resources!)" --weight=29

pushd $final_path/programs/server
	ynh_use_nodejs
	ynh_exec_warn_less ynh_exec_as $app env $ynh_node_load_PATH yarn install --unsafe-perm
popd

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..." --weight=2

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..." --weight=1

# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate --non-append

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add $app --description="Team collaboration communication platform"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=19

ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="SERVER RUNNING"

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