words-bingo.sh

#!/bin/bash

wordlist_filename=${1:-my-words.txt}
used_words_filename=.used-$(basename $wordlist_filename)

espeak_command="espeak -v en-us"
word_echo_command="cowsay" # default is "echo"

list_all_words() {
    cat $wordlist_filename | sort -u
}

list_used_words() {
    cat $used_words_filename | sort -u
}

list_left_words() {
    list_all_words | \
        comm -23 - <(list_used_words)
}

# is there a wordlist?
if [ ! -f $wordlist_filename ]; then
    echo -e "\e[31mError\e[0m: Please provide \"$wordlist_filename\""
    exit 1
fi

# ensure used words file exists
touch $used_words_filename

# as long as we have unused words in the list
while [ 0 -lt "$(list_left_words | wc -l)" ]; do
    clear
    echo -e "\e[33m"
    word=$(list_left_words | \
        shuf -n 1)
    echo $word >> $used_words_filename
    $word_echo_command $word
    echo -e "\e[0m"
    echo

    used_words=$(list_used_words | wc -l)
    unused_words=$(list_left_words | wc -l)
    total_words=$(($used_words + $unused_words))
    echo -e "\e[36mHint\e[0m: Unused words: \e[32m$unused_words\e[0m, total words: \e[33m$total_words\e[0m, used words: \e[31m$used_words\e[0m"

    if [ -n "$espeak_command" ]; then
        counter=0
        while : ; do
            $espeak_command "$word"

            # wait for user input...
            [ $counter -eq 0 ] && echo '
r ........ repeat current word
ENTER .... next random word
q ........ quit program'
            read -n1 -p "" user_input
            ((counter++))

            [ "$user_input" == "r" ] && continue
            [ "$user_input" == "q" ] && { echo; exit 0; }
            break
        done
    else
        # wait for user input...
        echo '
ENTER .... next random word
q ........ quit program'
        read -p "" user_input

        [ "$user_input" == "q" ] && { echo; exit 0; }
    fi
done

# all words used up
echo
echo -e "\e[36mHint\e[0m: All words from \"$wordlist_filename\" are used up"
echo    "      Please use \"rm $used_words_filename\" to start over"