#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --time --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
# language=$(ynh_app_setting_get --app=$app --key=language)

server_name=$(ynh_app_setting_get --app=$app --key=server_name)
port=$(ynh_app_setting_get --app=$app --key=port)
botname=$(ynh_app_setting_get --app=$app --key=botname)
synapse_instance=$(ynh_app_setting_get --app=$app --key=synapse_instance)
app_service_registration_path=$(ynh_app_setting_get --app=$app --key=app_service_registration_path)
# bot_is_synapse_admin=$(ynh_app_setting_get --app=$app --key=bot_is_synapse_admin)
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)
mautrix_config_path="$final_path/config.yaml"
mautrix_version=$(ynh_app_setting_get --app=$app --key=mautrix_version)

ynh_print_OFF
mautrix_bridge_db_pwd=$(ynh_app_setting_get --app=$app --key=mautrix_bridge_db_pwd)
ynh_print_ON

#=================================================
# SET CONSTANTS
#=================================================

log_filename="/var/log/$app/$app.log"
synapse_db_name="matrix_$synapse_instance"
# botname_synapse_db_user="@$botname:$server_name"
mautrix_bridge_user=$app
mautrix_bridge_db_name=$app
mautrix_bridge_db_user=$app
upstream_version=$(ynh_app_upstream_version)

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

### This helper will compare the version of the currently installed app and the version of the upstream package.
### $upgrade_type can have 2 different values
### - UPGRADE_APP if the upstream app version has changed
### - UPGRADE_PACKAGE if only the YunoHost package has changed
### ynh_check_app_version_changed will stop the upgrade if the app is up to date.
### UPGRADE_APP should be used to upgrade the core app only if there's an upgrade to do.
upgrade_type=$(ynh_check_app_version_changed)

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

#
# N.B. : the followings setting migrations snippets are provided as *EXAMPLES*
# of what you may want to do in some cases (e.g. a setting was not defined on
# some legacy installs and you therefore want to initiaze stuff during upgrade)
#

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

# 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

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --time --weight=1

# 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..." --time --weight=1

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

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --time --weight=1

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

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --time --weight=1

ynh_install_app_dependencies $pkg_dependencies

ynh_install_extra_app_dependencies --repo="https://updates.signald.org unstable main" --package="$extra_dependencies" --key="https://updates.signald.org/apt-signing-key.asc"

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --time --weight=1

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$mautrix_bridge_user

#=================================================
# SPECIFIC UPGRADE
#=================================================
# ...
#=================================================

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

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# SET MAUTRIX-BRIDGE CONFIG
#=================================================
ynh_script_progression --message="Configuring Mautrix-Bridge..." --weight=2

mautrix_config_path="$final_path/config.yaml"

### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.
ynh_backup_if_checksum_is_different --file="$app_service_registration_path/$app.yaml"
ynh_backup_if_checksum_is_different --file="$mautrix_config_path"

verify_server_ssl_certificates="true"
matrix_server_supports_asmux="false"
# https://docs.python.org/3.6/library/logging.html#logging-levels
log_level="INFO"

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

# Recalculate and store the checksum of the file for the next upgrade.
ynh_store_file_checksum --file="$app_service_registration_path/$app.yaml"
ynh_store_file_checksum --file="$mautrix_config_path"

#=================================================
# UPGRADE MAUTRIX-BRIDGE PYTHON MODULE
#=================================================

mkdir -p /var/log/$app
# Configure Mautrix-Bridge
python3 -m venv $final_path
#$final_path/bin/pip3 install --upgrade setuptools wheel
$final_path/bin/pip3 install --upgrade $final_path/src/mautrix-signal.tar.gz[metrics,formattednumbers,qrlink,stickers]
# -r optional-requirements.txt

#=================================================
# REGISTER SYNAPSE APP-SERVICE
#=================================================
$final_path/bin/python3 -m mautrix_signal -g -c $mautrix_config_path -r $app_service_registration_path/$app.yaml

/opt/yunohost/matrix-$synapse_instance/update_synapse_for_appservice.sh \
    || ynh_die "Synapse can't restart with the appservice configuration"
# Handled by synapse: synapse_ynh adds all registration files added in $app_service_registration_path to the app_service_config_files list

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions on app files
chown -R root: $final_path
chown $mautrix_bridge_user:root -R $final_path

# Fix possible permission issues with a previous signald version, esp. with stickers
chmod -R g+rwX /var/lib/signald/{avatars,attachments,stickers}

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

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --logfile "$log_filename"
chown $mautrix_bridge_user:root -R /var/log/$app
# 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..." --time --weight=1

yunohost service add $app --description="$app daemon for bridging Signal and Matrix messages" --log="$log_filename"

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

# ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
ynh_systemd_action --service_name=$app --action="start"
# # Wait until the synapse user is created
# sleep 30
# #    # (Note that, by default, non-admins might not have your homeserver's permission to create communities.)
# #    if [ "$bot_is_synapse_admin" = true ]
# #    then
#     ynh_psql_execute_as_root --database=$synapse_db_name --sql="UPDATE users SET admin = 1 WHERE name = ""$botname"";"
# #    #yunohost app action run $synapse_instance set_admin_user -a username=$botname
# #    fi
# ynh_systemd_action --service_name=$app --action="restart"

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

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