#!/bin/bash

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

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

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	true
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

synapsenumber=$YNH_APP_ARG_SYNAPSENUMBER
botname=$YNH_APP_ARG_BOTNAME
bot_synapse_adm=true
encryption=${YNH_APP_ARG_ENCRYPTION}
listadmin=$YNH_APP_ARG_BOTADMIN
listuser=$YNH_APP_ARG_BOTUSERS

app=$YNH_APP_INSTANCE_NAME

# ToDo check (in manifest?) if the selected synapse instance is not already connected to a mautrix_bridge bridge
if [ $synapsenumber -eq "1" ]
then
	synapse_instance="synapse"
else
	synapse_instance="synapse__$synapsenumber"
fi
server_name=$(ynh_app_setting_get --app $synapse_instance --key server_name)
domain=$(ynh_app_setting_get --app $synapse_instance --key domain)
mautrix_version=$(ynh_app_upstream_version)
bot_synapse_db_user="@$botname:$server_name"
synapse_db_name="matrix_$synapse_instance"
signald_user="signald" # This is actually chosen by the signald dependency

if [ "$listuser" == "local" ]
then
	listuser=$server_name
fi

#=================================================
# SET STANDARD SETTINGS FROM DEFAULT CONFIG
#=================================================

appserviceid=$botname
displayname="Signal bridge bot"
avatar="mxc://maunium.net/wPJgTQbZOtpBFmDNkiNEMDUp"
ephemeral_events="false"
enable_metrics="false"
listen_port=8000
registration_enabled="true"
enable_disappearing_messages_in_groups="false"
username_template="sg_{userid}"
contact_list_names="disallow"
federate_rooms="false"
encryption_default="false"
print_level="INFO"
enable_relaybot="true"
listrelay="*"

ynh_app_setting_set --app=$app --key=appserviceid --value=$appserviceid
ynh_app_setting_set --app=$app --key=displayname --value=$displayname
ynh_app_setting_set --app=$app --key=avatar --value=$avatar
ynh_app_setting_set --app=$app --key=ephemeral_events --value=$ephemeral_events
ynh_app_setting_set --app=$app --key=enable_metrics --value=$enable_metrics
ynh_app_setting_set --app=$app --key=listen_port --value=$listen_port
ynh_app_setting_set --app=$app --key=registration_enabled --value=$registration_enabled
ynh_app_setting_set --app=$app --key=enable_disappearing_messages_in_groups --value=$enable_disappearing_messages_in_groups
ynh_app_setting_set --app=$app --key=username_template --value=$username_template
ynh_app_setting_set --app=$app --key=contact_list_names --value=$contact_list_names
ynh_app_setting_set --app=$app --key=federate_rooms --value=$federate_rooms
ynh_app_setting_set --app=$app --key=encryption_default --value=$encryption_default
ynh_app_setting_set --app=$app --key=print_level --value=$print_level
ynh_app_setting_set --app=$app --key=enable_relaybot --value=$enable_relaybot
ynh_app_setting_set --app=$app --key=listrelay --value=$listrelay

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

final_path=/opt/yunohost/$app
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=7

ynh_app_setting_set --app=$app --key=botname --value=$botname
ynh_app_setting_set --app=$app --key=bot_synapse_adm --value=$bot_synapse_adm
ynh_app_setting_set --app=$app --key=encryption --value=$encryption
ynh_app_setting_set --app=$app --key=listuser --value=$listuser
ynh_app_setting_set --app=$app --key=listadmin --value=$listadmin
ynh_app_setting_set --app=$app --key=synapse_instance --value=$synapse_instance
ynh_app_setting_set --app=$app --key=server_name --value=$server_name
ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=mautrix_version --value=$mautrix_version

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=1

# Find a free port for communication between your local synapse instance (home server) and its app service mautrix_bridge.
port=$(ynh_find_port --port=8449)
ynh_app_setting_set --app=$app --key=port --value=$port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=10

ynh_exec_warn_less 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"
sleep 3

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=1

# Create a system user
# Add the user to the signald group. The signald group was created when the signald
# package was installed from the extra repository
# resolved by https://gitlab.com/signald/signald/-/commit/278240f3f1cc40a3b444c958b68ca3d6908e98a8
ynh_system_user_create --username=$app --home_dir="$final_path" --groups="$signald_user"

#=================================================
# CREATE A POSTGRESQL DATABASE
#=================================================
ynh_script_progression --message="Creating a PostgreSQL database..." --weight=3

db_name=$(ynh_sanitize_dbid --db_name=$app)
db_user=$db_name
ynh_app_setting_set --app=$app --key=db_name --value=$db_name
ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=3

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

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

#=================================================
# SPECIFIC SETUP
#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=2

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"

#=================================================
# INSTALL MAUTRIX-BRIDGE PYTHON MODULE
#=================================================
ynh_script_progression --message="Installing Mautrix-Bridge Python Module..." --weight=6

mkdir -p /var/log/$app
# Configure Mautrix-Bridge
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-signal.tar.gz[metrics,e2be,formattednumbers,qrlink,stickers]

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

$final_path/bin/python3 -m mautrix_signal -g -c $final_path/config.yaml -r /etc/matrix-$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 "$final_path"
ynh_store_file_checksum --file="/etc/matrix-$synapse_instance/app-service/$app.yaml"
ynh_store_file_checksum --file="$final_path/config.yaml"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=3

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=3

# Use logrotate to manage application logfile(s)
ynh_use_logrotate
chmod -R 600 "/var/log/$app"
chmod 700 "/var/log/$app"
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 Signal and Matrix messages" --log=/var/log/$app/$app.log

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=2

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"

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

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