# shellcheck shell=bash

_memory_file="${XDG_CONFIG_HOME:-$HOME/.config}/profile/memory.tsv"
_memory_question_color='\033[38;5;11m'
_memory_names=()
_memory_questions=()
_memory_answers=()
declare -A _memory_seen=()
_memory_invalid=0
_memory_line_number=0

if [[ -r "$_memory_file" ]]; then
	while IFS=$'\t' read -r _memory_name _memory_question _memory_answer _memory_extra; do
		((_memory_line_number++))

		if [[ -z "$_memory_name$_memory_question$_memory_answer$_memory_extra" ]]; then
			continue
		fi

		if [[ -z "$_memory_name" || -z "$_memory_question" || -z "$_memory_answer" || -n "$_memory_extra" ]]; then
			printf 'Invalid memory question on line %d.\n' "$_memory_line_number" >&2
			_memory_invalid=1
			continue
		fi

		if [[ -n ${_memory_seen[$_memory_name]:-} ]]; then
			printf 'Duplicate memory question for %s on line %d.\n' "$_memory_name" "$_memory_line_number" >&2
			_memory_invalid=1
			continue
		fi

		_memory_seen[$_memory_name]=1
		_memory_names+=("$_memory_name")
		_memory_questions+=("$_memory_question")
		_memory_answers+=("$_memory_answer")
	done < "$_memory_file"
else
	printf 'Memory question file is unavailable: %s\n' "$_memory_file" >&2
	_memory_invalid=1
fi

if [[ $_memory_invalid -eq 0 && ${#_memory_names[@]} -gt 0 ]]; then
	_memory_day=$(date -d "$(date +%F) 00:00" +%s)
	_memory_index=$(( (_memory_day / 86400) % ${#_memory_names[@]} ))
	_MEMORY_ANSWER=${_memory_answers[$_memory_index]}

	answerpls() {
		printf '%s\n' "$_MEMORY_ANSWER"
	}

	printf '%b%s%b (answerpls)\n\n' \
		"$_memory_question_color" "${_memory_questions[$_memory_index]}" "$_NC"
fi

unset _memory_file _memory_question_color _memory_names _memory_questions _memory_answers
unset _memory_seen _memory_invalid _memory_line_number _memory_name _memory_question
unset _memory_answer _memory_extra _memory_day _memory_index