#!/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

appserviceid=$(ynh_app_setting_get --app=$app --key=appserviceid)
botname=$(ynh_app_setting_get --app=$app --key=botname)
encryption=$(ynh_app_setting_get --app=$app --key=encryption)
botadmin=$(ynh_app_setting_get --app=$app --key=botadmin)
botusers=$(ynh_app_setting_get --app=$app --key=botusers)
domain=$(ynh_app_setting_get --app=$app --key=domain)
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=$app --key=psqlpwd)
port=$(ynh_app_setting_get --app=$app --key=port)
synapse_instance=$(ynh_app_setting_get --app=$app --key=synapse_instance)
server_name=$(ynh_app_setting_get --app=$app --key=server_name)
synapse_registration_path=$(ynh_app_setting_get --app=$app --key=synapse_registration_path)
apiid=$(ynh_app_setting_get --app=$app --key=apiid)
apihash=$(ynh_app_setting_get --app=$app --key=apihash)
bottoken=$(ynh_app_setting_get --app=$app --key=bottoken)

#=================================================
# CHECK VERSION
#=================================================
ynh_script_progression --message="Checking version..." --weight=1

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=5

# 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

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

ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"

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

# If appserviceid doesn't exist, create it
if [ -z "$appserviceid" ]
then
  appserviceid=$app
  ynh_app_setting_set --app=$app --key=appserviceid --value=$appserviceid
fi

# If db_name doesn't exist, create it
if [ -z "$db_name" ]
then
  db_name=$(ynh_app_setting_get --app=$app --key=mautrix_bridge_db_name)
  # db_name and db_user share the same value
  db_user=$db_name
  ynh_app_setting_set --app=$app --key=db_name --value=$db_name
fi

# If db_pwd doesn't exist, create it
if [ -z "$db_pwd" ]
then
  db_pwd=$(ynh_app_setting_get --app=$app --key=mautrix_bridge_db_pwd)
  ynh_app_setting_set --app=$app --key=psqlpwd --value=$db_pwd
fi

# If synapse_registration_path doesn't exist, create it
if [ -z "$synapse_registration_path" ]
then
  synapse_registration_path=$(ynh_app_setting_get --app=$app --key=app_service_registration_path)
  ynh_app_setting_set --app=$app --key=synapse_registration_path --value=$synapse_registration_path
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
	ynh_script_progression --message="Upgrading source files..." --weight=1

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path/src"
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=1

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..." --weight=2

# main configuration
ynh_backup_if_checksum_is_different --file="$final_path/config.yaml"
# as_token hs_token are autogenerated, save them before regenerating the config
as_token=$(grep "as_token:" "$final_path/config.yaml" | sed -r "s/ *as_token: *//")
hs_token=$(grep "hs_token:" "$final_path/config.yaml" | sed -r "s/ *hs_token: *//")
# ynh_replace_string --match_string=__AS_TOKEN__ --replace_string="$as_token" --target_file="$final_path/config.yaml"
# ynh_replace_string --match_string=__HS_TOKEN__ --replace_string="$hs_token" --target_file="$final_path/config.yaml"
is_encryption_enabled="$encryption"

if [ $encryption -eq 1 ]; then
  is_encryption_enabled="true"
fi

ynh_add_config --template="../conf/config.yaml" --destination="$final_path/config.yaml"

chmod 400 "$final_path/config.yaml"
chown $app:$app "$final_path/config.yaml"

#=================================================
# UPGRADE MAUTRIX-BRIDGE PYTHON MODULE
#=================================================
ynh_script_progression --message="Upgrading Mautrix-Bridge Python Module..." --weight=2

python3 -m venv $final_path
export HOME=$final_path
$final_path/bin/pip3 install --upgrade pip setuptools wheel
$final_path/bin/pip3 install --upgrade $final_path/src/mautrix-telegram.tar.gz[e2be,speedups,qr_login] # metrics,hq_thumbnails,sqlite,formattednumbers

#=================================================
# REGISTER SYNAPSE APP-SERVICE
#=================================================
ynh_script_progression --message="Registering Synapse app-service" --weight=1

$final_path/bin/python3 -m mautrix_telegram -g -c $final_path/config.yaml -r "$synapse_registration_path/$app.yaml"
/opt/yunohost/matrix-$synapse_instance/update_synapse_for_appservice.sh || ynh_die --message="Synapse can't restart with the appservice configuration"

# Set permissions on app files
chown -R $app:$app "$final_path"
ynh_store_file_checksum --file="$synapse_registration_path/$app.yaml"
ynh_store_file_checksum --file="$final_path/config.yaml"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..." --weight=1

# 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 --logfile "/var/log/$app/$app.log"
chown -R $app:$app /var/log/$app

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

yunohost service add $app --description="$app daemon for bridging Telegram and Matrix messages" --log="/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start"

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

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