#!/usr/bin/env bash

# Yeah, my CSHENV Install script is written in Bourne shell.  This is because
# CSH isn't a great scripting language, but it is a nice interactive shell.

export HOMEPATH="$(realpath ~)"
export REALPATH=$(realpath ${0})
export INSTALLER_LOCATION_REAL=$(dirname ${REALPATH})
export INSTALLER_LOCATION=$(echo ${INSTALLER_LOCATION_REAL} | sed -e 's,'"${HOMEPATH}"',~,')
export CSHENV_LOCATION_REAL=$(dirname ${INSTALLER_LOCATION_REAL})
export CSHENV_LOCATION=$(echo ${CSHENV_LOCATION_REAL} | sed -e 's,'"${HOMEPATH}"',~,')
export RELATIVE_CSHENV_LOCATION=$(echo ${CSHENV_LOCATION} | sed -e 's,~/,,')

export TMP_BASE=$(realpath ~/.cshenv/installer-backup/)
mkdir -p ${TMP_BASE}
#mkdir -p ${TMP_BASE}
export __TMP=$(mktemp -dp ${TMP_BASE})

backup_config_file()
{
	__file="${1}"
	mkdir -p ${__TMP}/ssh

	echo "Checking for ${__file}"
	if [ -e ${__file} ]
	then
		case ${__file} in
			*ssh/config)
				echo "Backing up ${__file} to ${__TMP}/ssh"
				mv ${__file} ${__TMP}/ssh/$(basename ${__file} | sed -e's/\.//')
			;;
			*)
				echo "Backing up ${__file} to ${__TMP}"
				mv ${__file} ${__TMP}/$(basename ${__file} | sed -e's/\.//')
			;;
		esac
	else
		echo "${__file} does not exist, not backing up anything."
	fi
}

install_shell_file()
{
	__file="${1}"

	backup_config_file ${1}

	echo "Installing ${1}"
	echo "source ${CSHENV_LOCATION}/startup_hooks/$(basename ${1} | sed -e's/\.//') "'!#:1' > ${1}
}

if [ -v CSHENV_DEBUG_INSTALLER ]
then
	echo HOMEPATH: $HOMEPATH
	echo REALPATH: $REALPATH
	echo TMP_BASE: $TMP_BASE
	echo __TMP: $__TMP
	echo INSTALLER_LOCATION_REAL: $INSTALLER_LOCATION_REAL
	echo INSTALLER_LOCATION: $INSTALLER_LOCATION
	echo CSHENV_LOCATION: $CSHENV_LOCATION
	echo RELATIVE_CSHENV_LOCATION: $RELATIVE_CSHENV_LOCATION
	echo $CSHENV_LOCATION
	echo $RELATIVE_CSHENV_LOCATION
	exit
fi

install_shell_file ~/.login

install_shell_file ~/.tcshrc

backup_config_file ~/.vimrc
backup_config_file ~/.vim

echo "Installing vim setup"
pushd ~ >& /dev/null
ln -s `echo ${RELATIVE_CSHENV_LOCATION}`/vim .vim
ln -s .vim/vimrc .vimrc
popd >& /dev/null

backup_config_file ~/.gitconfig

echo "Installing git configuration"

echo "[include]" >> ~/.gitconfig
echo "  path = ${CSHENV_LOCATION}/git/gitconfig" >> ~/.gitconfig
echo "" >> ~/.gitconfig

echo "[user]" >> ~/.gitconfig
echo "  email = adam@recursive.engineer" >> ~/.gitconfig
echo "  name = ADAM David Alan Martin" >> ~/.gitconfig
echo "" >> ~/.gitconfig
echo "  signingKey = \"`hostname` Git\"" >> ~/.gitconfig

echo "" >> ~/.gitconfig
echo "[commit]" >> ~/.gitconfig
echo "  gpgSign = true" >> ~/.gitconfig

backup_config_file ~/.ssh/config

echo "Match all" >> ~/.ssh/config
echo "     Include ${CSHENV_LOCATION}/ssh/prologue" >> ~/.ssh/config

echo "Match all" >> ~/.ssh/config
echo "     Include ${CSHENV_LOCATION}/ssh/epilogue" >> ~/.ssh/config