#!/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="RhinoReminds";

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

###
# Custom Settings
###

# Put any custom settings here.
build_output_folder="./dist";

deploy_ssh_user="ci";
deploy_ssh_host="starbeamrainbowlabs.com";
deploy_ssh_port="2403";
deploy_target_dir="RhinoReminds";

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

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

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

if [[ "$#" -lt 1 ]]; then
	echo -e "${FBLE}${project_name}${RS} build script";
	echo -e "    by Starbeamrainbowlabs";
	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 "    ${CACTION}build${RS}   - Restore nuget packages & compile project";
	echo -e "    ${CACTION}ci${RS}      - Perform CI tasks";
	echo -e "    ${CACTION}package${RS} - Pack latest build for package managers";
	echo -e "    ${CACTION}archive${RS} - Construct binary archives";
	echo -e "";
	
	exit 1;
fi

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

task_setup() {
	task_begin "Checking environment";
	
	check_command git true;
	check_command mono true;
	check_command msbuild true;
	check_command nuget true;
	check_command mktemp true;
	
	task_end 0;
}

task_build() {
	task_begin "Restoring nuget packages";
	nuget restore;
	task_end $?;
	
	task_begin "Building";
	debug_logfile="$(mktemp --suffix ".rhinoreminds.debug.log")";
	release_logfile="$(mktemp --suffix ".rhinoreminds.release.log")";
	(
		execute msbuild /consoleloggerparameters:ForceConsoleColor >"${debug_logfile}" 2>&1
		release_exit_code=$!;
	) &
	(
		execute msbuild /consoleloggerparameters:ForceConsoleColor /p:Configuration=Release >"${release_logfile}" 2>&1
		debug_exit_code=$!;
	) &
	
	wait
	
	# FUTURE: Grab the 
	stage_begin "Debug compilation output";
	cat "${debug_logfile}";
	stage_end "${release_exit_code}";
	
	stage_begin "Release compilation output";
	cat "${release_logfile}";
	stage_end "${debug_exit_code}";
	
	echo "";
	
	rm "${debug_logfile}" "${release_logfile}";
	
	
	task_end $?;
}

task_archive() {
	task_begin "Deleting extra files";
	execute find RhinoReminds/bin -iname "*.xml" -delete;
	task_end $?;
	
	task_begin "Setting permissions";
	find RhinoReminds/bin -type f -print0 | xargs -0 -P4 chmod -c -x;
	find RhinoReminds/bin -type f -iname "*.exe" -print0 | xargs -0 -P4 chmod -c +x;
	task_end $?;
	
	task_begin "Creating Archives";
	execute cp -ral RhinoReminds/bin/Debug RhinoReminds-Debug;
	execute cp -ral RhinoReminds/bin/Release RhinoReminds-Release;
	execute cp -al README.md RhinoReminds-Debug/README.md;
	execute cp -al README.md RhinoReminds-Release/README.md;
	
	execute tar -caf RhinoReminds-Debug.tar.gz RhinoReminds-Debug;
	execute tar -caf RhinoReminds-Release.tar.gz RhinoReminds-Release;
	
	execute rm -r RhinoReminds-{Debug,Release};
	task_end $?;
	
	if [ "${ARCHIVE}" != "" ]; then
		task_begin "CI environment detected - moving archives to specified CI archive directory";
		
		execute mv RhinoReminds-{Debug,Release}.tar.gz "${ARCHIVE}";
		
		task_end $?;
	fi
}

task_package() {
	task_begin "Preparing for packaging";
	check_command fpm true;
	
	package_dir="$(mktemp -d --suffix "-rhinoreminds-ci-fpm-package")";
	
	echo "Error: Not implemented yet :-/";
	exit 1;
	
	task_end $?;
}

task_deploy() {
	stage_begin "Deploying to ${deploy_ssh_host}....";
	if [ "${SSH_KEY_PATH}" == "" ]; then
		stage_end 1 "Error: Can't find the SSH key as the environment variable SSH_KEY_PATH isn't set.";
	fi
	
	task_begin "Preparing upload";
	
	subtask_begin "Creating temporary directory";
	temp_dir="$(mktemp -d --suffix "-rhinoreminds-upload")";
	subtask_end $? "Error: Failed to create temporary directory";
	
	subtask_begin "Unpacking release files";
	execute tar -xf "${ARCHIVE}/RhinoReminds-Release.tar.gz" -C "${temp_dir}";
	subtask_end $? "Failed to unpack release files";
	
	# Define the directory whose contents we want to upload
	source_upload_dir="${temp_dir}/RhinoReminds-Release";
	
	task_end $?;
	
	task_begin "Uploading release";
	# TODO: If we experience issues, we need to somehow figure out how to recursively delete the contents of the directory before uploading. We may have to install lftp and use that instead
	sftp -i "${SSH_KEY_PATH}" -P "${deploy_ssh_port}" -o PasswordAuthentication=no "${deploy_ssh_user}@${deploy_ssh_host}" << SFTPCOMMANDS
rm ${deploy_target_dir}/*
put -r ${source_upload_dir}/* ${deploy_target_dir}
bye
SFTPCOMMANDS
	task_end $? "Failed to upload release";
	
	task_begin "Cleaning up";
	execute rm -r "${temp_dir}";
	task_end $?;
	
	stage_end $? "Failed to deploy to ${deploy_ssh_host}.";
}

task_ci() {
	tasks_run setup;
	
	task_begin "Environment Information";
	execute uname -a;
	execute git --version;
	execute mono --version;
	execute nuget help | head -n1;
	task_end 0;
	
	# FUTURE: We'll (eventually) want to call the package task here too
	tasks_run build archive;
	
	if [[ "$(git rev-parse --abbrev-ref HEAD)" == "master" ]]; then
		tasks_run deploy;
	else
		echo "Not deploying, as this build wasn't on the master branch.";
	fi
}


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

tasks_run $@;