#!/bin/zsh
DEPENDENCIES+=()
REQUIRED_ENV+=()

use system/config

CHECK_ENVIRONMENT
#####################################################################

SETUP_SYMLINKS() {
	while read SYMLINK
	do
		SETUP_SYMLINK $(echo $SYMLINK | awk '{print $1;}') $(echo $SYMLINK | awk '{print $2}')
	done < <(echo $SYMLINKS | sed -n '/^[^#]/p')
}

SETUP_SYMLINK() {
	[ ! $2 ] && FAIL 1 'must provide SOURCE_CONFIG and TARGET_CONFIG'

	local SOURCE_CONFIG="$1"
	local TARGET_CONFIG="$HOME/.config/$2"

	[ ! -f "$SOURCE_CONFIG" ] && [ ! -d "$SOURCE_CONFIG" ] && [ -f "$TARGET_CONFIG" ] && {
		INFO 'SOURCE_CONFIG is not tracked; copying from TARGET_CONFIG'
		mkdir -p "$(dirname "$SOURCE_CONFIG")"
		cp "$TARGET_CONFIG" "$SOURCE_CONFIG"
	}
	[ ! -f "$SOURCE_CONFIG" ] && [ ! -d "$SOURCE_CONFIG" ] && {
		WARNING "no such file or directory '$SOURCE_CONFIG'"
		return 0
	}

	[ ! -d $(dirname "$TARGET_CONFIG") ] && mkdir -p $(dirname "$TARGET_CONFIG")

	[[ $SAFE_SYMLINKS -eq 1 ]] \
		&& mv "$TARGET_CONFIG" "$TARGET_CONFIG.bak" >/dev/null 2>&1

	rm "$TARGET_CONFIG" >/dev/null 2>&1

	ln -s "$SOURCE_CONFIG" "$TARGET_CONFIG" \
		&& SUCCESS "successfully linked '$(basename $(dirname $TARGET_CONFIG))/$(basename $TARGET_CONFIG)'" \
		|| FAIL 3 "failed to create link '$TARGET_CONFIG'" \
		;
}

#####################################################################
SETUP_SYMLINKS $@