#!/bin/bash

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

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

ynh_app_setting_set --key=php_upload_max_filesize --value=100M

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

if [ "$server_name" == "Same than the domain" ]; then
    server_name="$domain"
    ynh_app_setting_set --key=server_name --value="$server_name"
fi

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

ynh_script_progression "Storing installation settings..."

ensure_vars_set

if [ "$is_free_registration" -eq 0 ]
then
    enable_registration=false
    password_enabled=false
else
    enable_registration=true
    password_enabled=true
fi

ynh_app_setting_set --key=password_enabled --value="$password_enabled"
ynh_app_setting_set --key=enable_registration --value="$enable_registration"

#=================================================
# Check datadir empty
#=================================================

if [ -n "$(ls -A "$data_dir")" ]; then
    old_data_dir_path="${data_dir}_$(date '+%Y%m%d.%H%M%S')"
    ynh_print_warn "Data directory was not empty. Data was moved to $old_data_dir_path"
    mkdir -p "$old_data_dir_path"
    mv -t "$old_data_dir_path" "$data_dir"/*
fi

#=================================================
# CREATE A DH FILE
#=================================================
ynh_script_progression "Creating a dh file..."

# WARNING : theses command are used in INSTALL, UPGRADE, RESTORE
# For any update do it in all files

# Make dh cert for synapse if it doesn't exist
if [ ! -e /etc/ssl/private/dh2048.pem ]
then
    ynh_hide_warnings openssl dhparam -out /etc/ssl/private/dh2048.pem -outform PEM -dsaparam 2048
    chown root:ssl-cert /etc/ssl/private/dh2048.pem
    chmod 640 /etc/ssl/private/dh2048.pem
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression 'Configuring system groups'

adduser "$app" ssl-cert
adduser turnserver ssl-cert

#=================================================
# FIX DB CONFIG
#=================================================
ynh_script_progression "Fixing database type..."

ynh_psql_db_shell \
    <<< "update pg_database set datcollate='C', datctype='C' where datname='$db_name';"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression "Setting up source files..."

# Create empty dir for synapse

# WARNING : theses command are used in INSTALL, UPGRADE
# For any update do it in all files
mkdir -p /var/log/matrix-"$app"
mkdir -p /etc/matrix-"$app"/conf.d
mkdir -p /etc/matrix-"$app"/app-service
touch /etc/matrix-"$app"/conf.d/app_service.yaml

# Install synapse in virtualenv
install_sources

#=================================================
# CREATE SMALL CAS SERVER
#=================================================
# WARNING : theses command are used in INSTALL, UPGRADE
# For any update do it in all files

cp ../sources/cas_server.php "$install_dir"/
#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chmod u=rwX,g=rX,o= -R "$install_dir"
#REMOVEME? Assuming the install dir is setup using ynh_setup_source, the proper chmod/chowns are now already applied and it shouldn't be necessary to tweak perms | chown "$app:$app" -R "$install_dir"
#=================================================
# CREATE SYNAPSE CONFIG
#=================================================

ynh_script_progression "Creating Synapse config..."

# Generate config
"$code_dir"/bin/python -m synapse.app.homeserver --keys-directory /etc/matrix-"$app"/ --generate-config --server-name "$server_name" --report-stats=no -c homeserver.yml

# Get random values from config
registration_shared_secret="$(grep -E "^registration_shared_secret:" homeserver.yml | cut -d'"' -f2)"
form_secret="$(grep -E "^form_secret:" homeserver.yml | cut -d'"' -f2)"
macaroon_secret_key="$(grep -E "^macaroon_secret_key:" homeserver.yml | cut -d'"' -f2)"

# store in yunohost settings
ynh_app_setting_set --key=registration_shared_secret --value="$registration_shared_secret"
ynh_app_setting_set --key=form_secret --value="$form_secret"
ynh_app_setting_set --key=macaroon_secret_key --value="$macaroon_secret_key"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression "Configuring $app's systemd service..."

# Create systemd service for synapse and turnserver
ynh_config_add_systemd  --template=synapse.service

cp ../conf/default_coturn /etc/matrix-"$app"/coturn_env
ynh_config_add_systemd --service="$app"-coturn --template=synapse-coturn.service

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression "Configuring NGINX web server..."

# Create a dedicated php-fpm config
ynh_script_progression "Configuring application..."

ynh_config_add_phpfpm

configure_nginx

#=================================================
# SET SYNAPSE CONFIG
#=================================================
ynh_script_progression "Configuring Synapse..."

ynh_config_add --jinja --template="homeserver.yaml" --destination="/etc/matrix-$app/homeserver.yaml"
ynh_config_add --template="log.yaml" --destination="/etc/matrix-$app/log.yaml"

#=================================================
# SET COTURN CONFIG
#=================================================
ynh_script_progression "Configuring Coturn..."

configure_coturn

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression "Configuring log rotation..."

ynh_config_add_logrotate "/var/log/matrix-$app"

#=================================================
# ADD SCRIPT FOR COTURN CRON AND APP SERVICE
#=================================================

# WARNING : theses command are used in INSTALL, UPGRADE
# For any update do it in all files

ynh_config_add --template="../sources/Coturn_config_rotate.sh" --destination="$code_dir/Coturn_config_rotate.sh"
ynh_config_add --template="../sources/update_synapse_for_appservice.sh" --destination="$code_dir/update_synapse_for_appservice.sh"
ynh_config_add --template=../sources/set_admin_user.sh --destination="$code_dir"/set_admin_user.sh

#=================================================
# SETUP PERMISSIONS
#=================================================

ynh_script_progression "Configuring permissions..."

if yunohost --output-as plain domain list | grep -q "^$server_name$"; then
    ynh_""permission_create --permission=server_client_infos --url="$server_name"/.well-known/matrix \
                          --label="Server info for clients. (well-known)" --show_tile=false --allowed=visitors \
                          --auth_header=false --protected=true
else
    ynh_print_warn "Note yunohost won't be able to manage the required config for $server_name. So please add the needed DNS config as described on the documentation"
fi

#=================================================
# UPDATE HOOKS
#=================================================

# WARNING : theses command are used in INSTALL, UPGRADE
# For any update do it in all files
ynh_replace --match=__APP__ --replace="$app" --file=../hooks/post_cert_update
ynh_replace --match=__DOMAIN__  --replace="$domain"  --file=../hooks/post_cert_update

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

ynh_script_progression "Protecting directories..."
set_permissions data

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

yunohost service add "$app" --log "/var/log/matrix-$app/homeserver.log" --needs_exposed_ports "$port_synapse_tls" --description 'Main matrix server service.'
yunohost service add "$app"-coturn --needs_exposed_ports "$port_turnserver_tls" --description 'Turn server for matrix server. Used for audio and video call.'

#=================================================
# RELOAD SERVICES
#=================================================
ynh_script_progression "Restarting Synapse services..."

ynh_systemctl --service="$app"-coturn.service --action=restart
ynh_systemctl --service="$app".service --action=restart --wait_until="Synapse now listening on TCP port $port_synapse_tls" --log_path="/var/log/matrix-$app/homeserver.log" --timeout=300

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression "Configuring Fail2Ban..."

ynh_config_add_fail2ban

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

ynh_script_progression "Installation of $app completed"