#!/bin/bash

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

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

server_name=$(ynh_app_setting_get --app=$app --key=server_name)
synapse_db_name="matrix_$synapse_instance"

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

upgrade_type=$(ynh_check_app_version_changed)

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

#=================================================
# 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="$install_dir/src"
fi

chmod 750 "$install_dir"
chmod -R 750 "$install_dir"
chown -R $app:$app "$install_dir"

#=================================================
# 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="$install_dir/config.yaml"
# as_token hs_token are autogenerated, save them before regenerating the config
as_token=$(grep "as_token:" "$install_dir/config.yaml" | sed -r "s/ *as_token: *//")
hs_token=$(grep "hs_token:" "$install_dir/config.yaml" | sed -r "s/ *hs_token: *//")
is_encryption_enabled="$encryption"

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

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

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

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

python3 -m venv $install_dir
export HOME=$install_dir
$install_dir/bin/pip3 install --upgrade pip setuptools wheel
$install_dir/bin/pip3 install --upgrade $install_dir/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

$install_dir/bin/python3 -m mautrix_telegram -g -c $install_dir/config.yaml -r "/etc/matrix-$synapse_instance/app-service/$app.yaml"
/opt/yunohost/matrix-$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 "$install_dir"
ynh_store_file_checksum --file="/etc/matrix-$synapse_instance/app-service/$app.yaml"
ynh_store_file_checksum --file="$install_dir/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