#!/bin/bash

_notes_locations_print()
{
	echo "\t\ttodo.txt:\t$TODOTXTPATH"
	echo "\t\twiki:\t\t$VIMWIKIPATH"
	echo "\t\tvimrc\t\t$MYVIMRC"
	echo "\t\tlog.txt\t\t$LOGTXTPATH"
}

_help()
{
	echo "dev-env.sh usage: $0 [mode]"
	echo "\txn: Extract notes to:"
	_notes_locations_print
	echo "\tsn: Store notes:"
	_notes_locations_print
	echo "\tnotes: Launch note making tmux session."
	exit 1
}

_extract_notes()
{
	if [ ! -e "./archive.tar.gz" ];
	then
		echo "archive.tar.gz does not exist."
		exit 1
	fi
	mkdir tmp
	tar xzf archive.tar.gz -C .
	cp -r ./tmp/wiki $(dirname $VIMWIKIPATH)
	cp ./tmp/todo.txt $TODOTXTPATH
	cp ./tmp/.vimrc $MYVIMRC
	cp ./tmp/log.txt $LOGTXTPATH
	rm -r ./tmp
	echo "Notes successfully extracted from archive."
	exit 0
}

_storage_notes()
{
	mkdir tmp
	cp $TODOTXTPATH ./tmp/
	cp -r $VIMWIKIPATH ./tmp/
	cp $MYVIMRC ./tmp/
	cp $LOGTXTPATH ./tmp/
	tar czf archive.tar.gz ./tmp/
	rm -r tmp
	echo "Notes successfully stored!"
	exit 0
}

_reverse(){ reversed=();local i;for ((i=$#;i>0;i--)); do reversed+=("${!i}");done; }

_graph_notes()
{
	# i want this function to show me a graph of work created to work done
	readarray -t arr < $TODOTXTPATH
	for value in "${arr[@]}"; do
		mapfile -t dates < <(echo $value | grep -Po '(?<!:)[[:digit:]]{4}-[[:digit:]]{2}-[[:digit:]]{2}') &>/dev/null
		declare dates
		declare -A datemap
		declare -A compdatemap
		_reverse "${dates[@]}" && for i in "${reversed[@]}"; do
			## if there are 2 options then do the following
			## if there is one option then do the following
			if [[ -z "${datemap["$i"]}" ]]; then
				datemap[$i]=1
			else 
				datemap[$i]="$((datemap[$i] + 1))"
			fi
			# if one value, add 1 to that index on map
			# if 2 values, add 1 to index of map and
		done
		if [[ ${#reversed[@]} == 2 ]]; then
			echo "$datemap[$i]"
			echo "COMPLETED ITEM"
		fi

		# got the dates here, arrays of 2 mean the task was completed and should be added as [date1] [created] [date2] completed
	done
	for key in ${!datemap[@]}
	do 
		echo "${key}, ${datemap[${key}]}"
	done
}

_launch_notes()
{
	tmux new-session -d 'bash'
	tmux new-window 'vim $TODOTXTPATH $VIMWIKIPATH/index.md $LOGTXTPATH'
	tmux -2 attach-session -d
}

# main

# check for the neccessary variables

if [ -z "$VIMWIKIPATH" ];
then 
	echo "VIMWIKIPATH not set."
	exit 1
fi

if [ -z "$TODOTXTPATH" ];
then 
	echo "TODOTXTPATH not set."
	exit 1
fi

if [ -z "$MYVIMRC" ];
then 
	echo "MYVIMRC not set."
	exit 1
fi

if [ -z "$LOGTXTPATH" ];
then 
	echo "LOGTXTPATH not set."
	exit 1
fi

# run the user's command

case "$1" in
	sn ) _storage_notes ;;
	xn ) _extract_notes ;;
	notes ) _launch_notes ;;
	graph ) _graph_notes ;;
	* ) _help ;;
esac