#! /bin/bash

# Makes a file with a number of key values

START=$(date +%s)

BASE=$(dirname $(dirname $(realpath -s $0)));
AMOUNT=1000
FILE_NAME="corpus.csv"
FULL_PATH="$BASE/csv/$FILE_NAME"

if [ -f "$FULL_PATH" ]; then
	rm "$FULL_PATH"
fi

echo "Generating csv/$FILE_NAME..."

KEY_LEN=${#AMOUNT}
LINE_LEN=`expr 100 - $KEY_LEN`
for (( i = 0; i < "$AMOUNT"; i++ )); do
	KEY=$(printf "%0${KEY_LEN}d\n" $i)

	LEN1=$(shuf -i "0-$LINE_LEN" -n 1)
	LEN2=`expr 100 - $LEN1`

	PART1=$(shuf -er -n "$LEN1" {a..z} | paste -sd "")
	PART2=$(shuf -er -n "$LEN2" {a..z} | paste -sd "")

	echo "$PART1$KEY$PART2" >> $FULL_PATH
done

shuf "$FULL_PATH" > "$BASE/tmp.csv" && mv "$BASE/tmp.csv" "$FULL_PATH"

END=$(date +%s)
SECONDS=`expr $END - $START`
echo "$FILE generated in ${SECONDS}s"