#!/usr/bin/env bash

set -eo pipefail

COLOR_WHITE=$(tput setaf 7);
COLOR_MAGENTA=$(tput setaf 5);
FONT_BOLD=$(tput bold);
FONT_NORMAL=$(tput sgr0);

echo
echo -e "$COLOR_WHITE $FONT_BOLD Substrate Node Template Setup $FONT_NORMAL";

name=$1
shift
author=$1
shift

if [[ "$name" == "" || "$name" == "-"* ]]
then
  echo "  Usage: substrate-node-new <NAME> <AUTHOR>"
  echo
  exit 1
fi
if [[ "$author" == "" || "$author" == "-"* ]]
then
  echo "  Usage: substrate-node-new <NAME> <AUTHOR>"
  echo
  exit 1
fi

lname="$(echo $name | tr '[:upper:]' '[:lower:]')"
dirname="${lname// /-}"

bold=$(tput bold)
normal=$(tput sgr0)

if [ -d "$dirname" ]; then
  echo "  Directory '$name' already exists!"
  echo
  exit 1
fi

echo "${bold}  Downloading project...${normal}"
curl http://releases.parity.io/substrate/x86_64-debian:stretch/2.0.0-6653043/substrate/substrate-node-template.tar.gz | tar xz

mv substrate-node-template $dirname

pushd $dirname >/dev/null

echo "${bold}Customizing project...${normal}"
function replace {
	find_this="$1"
	shift
	replace_with="$1"
	shift
	IFS=$'\n'
	TEMP=$(mktemp -d "${TMPDIR:-/tmp}/.XXXXXXXXXXXX")
	rmdir $TEMP
	for item in `find . -type f`
	do
		sed "s/$find_this/$replace_with/g" "$item" > $TEMP
		cat $TEMP > "$item"
	done
	rm -f $TEMP
}
replace "Template Node" "${name}"
replace node-template "${lname//[_ ]/-}"
replace node_template "${lname//[- ]/_}"
replace Anonymous "$author"

echo "${bold}Initializing repository...${normal}"
git init 2>/dev/null >/dev/null
cat >.gitignore <<EOL
# Generated by Cargo
# will have compiled files and executables
**/target/

# These are backup files generated by rustfmt
**/*.rs.bk
EOL
git add * .gitignore 2>/dev/null >/dev/null
git commit -a -m "Initial clone from template node" 2>/dev/null >/dev/null

echo "${bold}Initializing WebAssembly build environment...${normal}"
./scripts/init.sh 2>/dev/null >/dev/null

echo "${bold}Building node...${normal}"
cargo build --release

echo
echo "${bold}Chain client created in ${dirname}${normal}."
echo "To start a dev chain, run:"
echo "$ $dirname/target/release/${lname//[_ ]/-} --dev"
echo "To create a basic Bonds UI for your chain, run:"
echo "$ substrate-ui-new $name"
echo "To push to a newly created GitHub repository, inside ${dirname}, run:"
echo "$ git remote add origin git@github.com:myusername/myprojectname && git push -u origin master"
echo

popd >/dev/null