#!/usr/bin/env bash

group=${args[group]:?}
file=${args[--file]:-}
clean=${args[--clean]:-}

_install_entry() {
	type="$1"
	source="$2"
	target="$3"
	hook="$4"
	pipe="$5"
	completions="$6"

	install_args=()

	if [[ -n "$hook" ]]; then
		install_args+=("--hook=$hook")
	fi
	if [[ -n "$clean" ]]; then
		install_args+=("--clean")
	fi

	install_args+=("$type")

	if [[ -n "$pipe" ]]; then
		install_args+=("--pipe=$pipe")
	fi
	if [[ -n "$completions" ]]; then
		install_args+=("--completions=$completions")
	fi

	if [[ $source = \$* ]]
	then
    source=$(eval "echo $source")
	fi
	install_args+=("$source")

	install_args+=("$(eval "echo $target")")

	"$0" "${install_args[@]}"
}

_handle_entry() {
	unset AUTOINSTALL_ITEM_TYPE \
		AUTOINSTALL_ITEM_SOURCE \
		AUTOINSTALL_ITEM_TARGET \
		AUTOINSTALL_ITEM_HOOK \
		AUTOINSTALL_ITEM_PIPE \
		AUTOINSTALL_ITEM_COMPLETIONS \
		AUTOINSTALL_ITEM_GROUPS

	eval "$1"

	# check if we have the required vars
	if [[ -z "${AUTOINSTALL_ITEM_TYPE:-}" \
		|| -z "${AUTOINSTALL_ITEM_SOURCE:-}" \
		|| -z "${AUTOINSTALL_ITEM_TARGET:-}" \
		|| -z "${AUTOINSTALL_ITEM_GROUPS:-}" ]]
	then
		return
	fi

	if [[ "$group" != "all" ]]
	then
		# check if group is in groups
		if [[ ! "${AUTOINSTALL_ITEM_GROUPS}" =~ (^|,)$group(,|$) ]]
		then
			return
		fi
	fi

	_install_entry "$AUTOINSTALL_ITEM_TYPE" "$AUTOINSTALL_ITEM_SOURCE" \
		"$AUTOINSTALL_ITEM_TARGET" "${AUTOINSTALL_ITEM_HOOK:-}" "${AUTOINSTALL_ITEM_PIPE:-}" "${AUTOINSTALL_ITEM_COMPLETIONS:-}"

}

file_lines=$(wc -l < "$file")
line=0
while [[ $line -lt $file_lines ]]; do
	entry=$(tail -n +$line "$file" | awk '/^$/{exit} {print} ')
	entry_len=$(echo "$entry" | wc -l)
	line=$((line + entry_len))

	if [[ $entry_len -le 1 ]]; then
		continue
	fi

	_handle_entry "$entry" || true # ignore errors
done