#!/bin/bash

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

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

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================

if [[ -n "$rpc_secret" ]]
then
	echo "$rpc_secret" | grep -E ^[0-9a-f]{64}$ || ynh_die --message="rpc_secret have to be a 32-byte hex-encoded random string. See https://garagehq.deuxfleurs.fr/documentation/reference-manual/configuration/ for more information"
else
	rpc_secret=$(ynh_string_random 32| od -A n -t x -w64 | sed 's/ //g')
fi
if [ -n "$bootstrap_peers" ] 
then
	echo "$bootstrap_peers" | grep -E '[0-9a-f]{64}@((\b25[0-5]|\b2[0-4][0-9]|\b[01]?[0-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}|([a-zA-Z0-9][a-zA-Z0-9-]{0,61}[a-zA-Z0-9]\.)+[a-zA-Z]{2,}):[0-9]{1,4}' || ynh_die --message="friend server id must have id with the following form : 1799bccfd7411eddcf9ebd316bc1f5287ad12a68094e1c6ac6abde7e6feae1ec@192.168.1.1:1234 or  1799bccfd7411eddcf9ebd316bc1f5287ad12a68094e1c6ac6abde7e6feae1ec@example.tld:1234"
fi

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=1

ynh_app_setting_set --app=$app --key=rpc_secret --value=$rpc_secret
ynh_app_setting_set --app=$app --key=bootstrap_peers --value=$bootstrap_peers

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=1

ynh_setup_source --dest_dir="$install_dir"
mv $install_dir/main $install_dir/garage

chmod 750 $install_dir
chmod +x $install_dir/garage
chown -R $app:$app "$install_dir"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=1

# Create a dedicated NGINX config
if [[ "${PACKAGE_CHECK_EXEC:-}" -eq 1 ]]
then
    cat << EOF > ../conf/nginx.conf
location / {
    return 200 'This is a dummy page for garage, only displayed during tests on Yunohost CI';
}
EOF
fi

ynh_add_nginx_config

#=================================================
# ADD A CONFIGURATION
#=================================================
ynh_script_progression --message="Adding a configuration file..." --weight=1

ynh_add_config --template="mount_disk.sh" --destination="$install_dir/mount_disk.sh"
ynh_add_config --template="umount_disk.sh" --destination="$install_dir/umount_disk.sh"
ynh_add_config --template="garage.toml" --destination="$install_dir/garage.toml"
chmod +x "$install_dir/mount_disk.sh" "$install_dir/umount_disk.sh"

chmod 600 "$install_dir/garage.toml"
chown $app:$app "$install_dir/garage.toml"

#=================================================
# CREATE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Creating a data directory..." --weight=5

if system_is_inside_container
then
    ynh_print_warn --message="This may take time regarding disk size..."
	
    # to be sure to not exceed size limit, i use a virtual disk with a fix size to have a max limit size.
	qemu-img create -f qcow2 $data_dir/garage_data.qcow2 "$weight"G
	$install_dir/mount_disk.sh true
	$install_dir/umount_disk.sh
fi

#=================================================
# ADD REGEN-CONF HOOK
#=================================================
ynh_script_progression --message="Adding regen-conf hook..." --weight=1

ynh_add_config --template="regenconf_nginx_garage" --destination="/usr/share/yunohost/hooks/conf_regen/98-nginx_$app"
yunohost tools regen-conf nginx

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=1

# Create a dedicated systemd config
ynh_add_systemd_config

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

yunohost service add $app --description="s3 storage" --log="/var/log/$app/$app.log" --needs_exposed_ports $port

#=================================================
# 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" --log_path="systemd" --line_match="Started Garage: Data Store."



#=================================================
# CONFIGURE GARAGE
#=================================================
ynh_script_progression --message="Configuring garage..." --weight=1

i=0
# sometimes server need some time to start
while [ -z "$($garage node id -q 2>/dev/null | cut -d '@' -f1)" ]; do
    i=$(( i + 1 ))
    [ $i -le 30 ] || { $garage node id || true; ynh_die --message="unable to get node id"; }
    sleep 1
done

secret_node_id=$($garage node id -q 2>/dev/null | cut -d '@' -f1)
ynh_app_setting_set --app=$app --key=secret_node_id --value=$secret_node_id


# define node
$garage layout assign $secret_node_id -z $domain -c ${weight}GB -t $domain
# if there is enough node, apply layout
garage_layout_apply

if [ -n "$bootstrap_peers" ] 
then
	garage_connect "$bootstrap_peers"
fi

self_bootstrap_peers="$($garage node id --quiet)"
ynh_app_setting_set --app=$app --key=self_bootstrap_peers --value=$self_bootstrap_peers
garage_layout="$($garage layout show)"
ynh_app_setting_set --app=$app --key=garage_layout --value="$garage_layout"

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

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