#!/bin/bash

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

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

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

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

# TODO: check if there are some file that need some chown chmod
# TODO: look at whatsapp to compare

#=================================================
# MIGRATION 1 : PYTHON TO GO BRIDGE
#=================================================

# Version 0.5.1 of Mautrix Signal Bridge is written in Go, whereas previous versions
# were written in Python. Also signald data is not needed anymore.

# Remove rustup
export PATH="$PATH:$install_dir/.cargo/bin:$install_dir/.local/bin:/usr/local/sbin"

if [ -e "$install_dir/.rustup" ]; then
    ynh_exec_as "$app" env "PATH=$PATH" rustup self uninstall
fi
# Remove signald executable
ynh_secure_remove --file="$signald_exe"

# Remove signald data
ynh_secure_remove --file="$signald_data"
# Remove signald system user
ynh_system_user_delete --username=$signald_user


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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=2

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

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

#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..." --weight=2
echo "botusers=$botusers"
if [[ -z "$botusers" ]] || [ "$botusers" == "admin" ]; then
    if_botusers="# "
else
    if_botusers=""
fi

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

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

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

$install_dir/mautrix-signal -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"

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"

#=================================================
# REAPPLY SYSTEM CONFIGURATIONS
#=================================================
ynh_script_progression --message="Upgrading system configurations related to $app..." --weight=1

# Create a dedicated systemd config
ynh_add_systemd_config
yunohost service add "$app" --description="$app daemon for bridging Signal and Matrix messages" --log="/var/log/$app/$app.log"

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

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