#!/bin/bash

if [[ $# != 1
    || -z "$1"
    || ! "$1" =~ ^[0-9]+$
    || "$1" -lt 1
    || "$1" -gt 100 ]]
then
    echo "Error: wrong argument"
    exit 1
fi

number=$1

# Start the for loop for player two
for (( tries_left=5 ; tries_left > 0; tries_left-- ))
do
    echo "Enter your guess ($tries_left tries left):"

    read guess
    if [[ $? < 0 ]]
    then
        exit 1
    fi

    if [[ -z "$guess"
        || ! "$guess" =~ ^[0-9]+$
        || "$guess" -lt 1
        || "$guess" -gt 100 ]]
    then
        tries_left=$tries_left+1
        continue
    fi

    if [[ "$guess" -eq "$number" ]]
    then
        echo "Congratulations, you found the number in $((5-$tries_left+1)) moves!"
        exit
    fi

    if [[ "$guess" -lt "$number" ]]
    then
        echo "Go up"
    else
        echo "Go down"
    fi
done

echo "You lost, the number was $number"