#!/bin/bash

function checkProjectName(){
	# check, if volume does not exist yet
	name=$1
	# should not be empty
	[ -n "$read_project_name" ] || die "Empty project name is not allowed"
	if [ -d /data/$dir_prefix-$name ] 
	then
		die "Target volume for project '$name' exists - please try again!"
	fi
}

function generateSSHKey(){
	# generates ssh key with $1 path and $2 description
	local keyfile=$1/identity
	local description=$2
	echo "Creating SSH deployment key.."
	ssh-keygen -f $keyfile -t ed25519 -C "$description" -N ""
	echo 
	echo "Public key is:"
	echo "-----------------------------------------------------"
	cat $keyfile.pub
	echo "-----------------------------------------------------"
	echo -n "Please make sure that key is set up at your git hosting and press enter.."
	read
}


function reuseSSHKey(){
	# pastes ssh key to file $1 with vim
	local keyfile=$1
	local scratch=$(mktemp)
	echo "# Please paste private ssh key here and save this file" > $scratch
	vim $scratch
	sed -e 's/#.*$//' $scratch > $keyfile
	rm $scratch
	echo "Checking key..."
	chmod 0700 $keyfile
	ssh-keygen -y -f $keyfile -P ""	|| true # will fail in the end, so script will continue and clean up the mess
}


root=/data/$dir_prefix-$read_project_name
# start generating config
mkdir -p $root/config
createConfigFile $root/config/cloner.cfg

# use ssh config?
echo -n "Would you like to use SSH auth? ([C]reate new key/[U]se existing key/[N]o) [C/u/n]: "
read read_ssh
[ -n "$read_ssh" ] || read_ssh=C
[[ "$read_ssh" =~ ^[CcUuNn]$ ]] || die "Invalid SSH key option, script is exiting now.."

# ssh resolutions? 
# create dir if needed
[[ "$read_ssh" =~ ^[nN]$ ]] || mkdir -p $root/config/auth/ssh

# generate new key
if [[ "$read_ssh" =~ ^[Cc]$ ]] 
then
	# create key
	generateSSHKey $root/config/auth/ssh "cloner-deploy-key-$read_project_name"
fi

# use existing key
if [[ "$read_ssh" =~ ^[Uu]$ ]] 
then
	# load key
	reuseSSHKey $root/config/auth/ssh/identity
fi


echo "First run - initialization of repos..."
if ! env BASE=$root run-checker
then 
	echo -n "First run failed - remove directory? [Y/n]"
	read read_cleanup
	[ -n "$read_cleanup" ] || read_cleanup=Y
	if [[ "$read_cleanup" =~ ^[Yy]$ ]] 
	then		
		rm -Rf $root
	fi
else
	createDetectorConfig $root/config/detector.cfg
	echo "Setup has finished!"
	touch $root/.enabled
fi