build

#!/usr/bin/env bash
# Make sure the current directory is the location of this script to simplify matters
cd "$(dirname $(readlink -f $0))";
################
### Settings ###
################

# The name of this project
project_name="Freeside Webhooks";

# The path to the lantern build engine git submodule
lantern_path="./lantern-build-engine";

###
# Custom Settings
###

# Put any custom settings here.
latest_release_json_url="https://api.github.com/repos/adnanh/webhook/releases/latest";

webhook_platform="linux";
webhook_arch="amd64";

###############################################################################

# Check out the lantern git submodule if needed
if [ ! -f "${lantern_path}/lantern.sh" ]; then git submodule update --init "${lantern_path}"; fi

source "${lantern_path}/lantern.sh";

if [[ "$#" -lt 1 ]]; then
	echo -e "${FBLE}${project_name}${RS} build script";
	echo -e "    by Freeside";
	echo -e "${LC}Powered by the lantern build engine, v${version}${RS}";
	echo -e "";
	echo -e "${CSECTION}Usage${RS}";
	echo -e "    ./build ${CTOKEN}{action}${RS} ${CTOKEN}{action}${RS} ${CTOKEN}{action}${RS} ...";
	echo -e "";
	echo -e "${CSECTION}Available actions${RS}";
	echo -e "    ${CACTION}setup${RS}            - Perform initial setup";
	echo -e "    ${CACTION}update${RS}           - Update webhook to the latest version";
	echo -e "";
	
	exit 1;
fi

###############################################################################

function task_setup {
	task_begin "Checking environment";
	
	check_command git true;
	check_command curl true;
	check_command jq true;
	check_command rsyslogd true;
	
	task_end $?;
	
	task_begin "Initialising submodules";
	git submodule update --init;
	task_end $?;
	
	task_begin "Checking environment file";
	[ -f ".webhook-environment" ];
	task_end $? "Error: Failed to find webhook environment file. Copy '.webhook-environment-example' to '.webhook-environment' and replace the specified values.";
	
	task_begin "Installing rsyslog configuration";
	execute sudo cp "./webhook-rsyslog.conf" "/etc/rsyslog.d/webhook.conf";
	exit_code="$?";
	execute sudo systemctl restart rsyslog.service;
	task_end "${exit_code}" "Error: Failed to install rsyslog configuration file";
	
	task_begin "Installing systemd service";
	execute sudo cp "./webhook.service" "/etc/systemd/system/";
	exit_code="$?";
	execute sudo systemctl daemon-reload;
	execute sudo systemctl enable webhook.service;
	task_end "${exit_code}";
	
	tasks_run update;
}

function task_update {
	stage_begin "Downloading latest version of webhook";
	
	task_begin "Creating temporary directory";
	temp_dir="$(mktemp -d --suffix "-webhook-temp")";
	task_end $? "Error: Failed to create temporary directory";
	
	task_begin "Finding assets list";
	assets_url="$(curl -sS "${latest_release_json_url}" | jq --raw-output ".assets_url")";
	task_end $? "Error: Failed to find assets list";
	
	task_begin "Finding platform-specific download url";
	download_url="$(curl -sS "${assets_url}" | jq --raw-output ".[] | select(.name | contains(\"${webhook_platform}-${webhook_arch}\")) | .browser_download_url")";
	task_end $? "Error: Failed to find download url";
	
	task_begin "Downloading webhook archive";
	execute curl -LsS -o "${temp_dir}/webhook.tar.gz" "${download_url}";
	task_end $? "Error: Failed to download webhook archive";
	
	task_begin "Extracting downloaded archive";
	execute tar -xzf "${temp_dir}/webhook.tar.gz" -C "${temp_dir}";
	execute rm "${temp_dir}/webhook.tar.gz";
	task_end $? "Error: Failed to extract downloaded archive";
	
	task_begin "Finding and moving webhook binary";
	webhook_filepath="$(find "${temp_dir}" -type f -name "webhook" | head -n1)";
	execute mv "${webhook_filepath}" "$(pwd)";
	exit_code="$?";
	execute rm -r "${temp_dir}";
	task_end "${exit_code}" "Error: Failed to find and move webhook binary";
	
	task_begin "Setting permissions";
	chmod 0555 "./webhook";
	task_end $?;
	
	stage_end $?;
	
	task_begin "Restarting webhook";
	
	execute sudo systemctl restart webhook.service;
	
	task_end $?;
}

###############################################################################

tasks_run $@;