gameofdockers.sh

#!/bin/bash

#Function to write files to GAME_OF_DOCKERS txt file, 2 files per container at a time
WriteFiles()
{
    echo "Beginning text creation GAME_OF_DOCKERS.txt…"
    
    #Find how many files there are within Docker Files    
    totalFiles=$(find Docker\ Files/ -type f | wc -l)
    #Halves the total number of files as the loop writes 2 at a time
    totalFiles=$((totalFiles / 2))

    #Loop to increment writing files to GAME_OF_DOCKERS.txt by 2 each time until all lines written
    for ((count = 0; count < $totalFiles; count++)); do
        #Loop to write files to GAME_OF_DOCKERS.txt
        for ((i = 1; i < 4; i++)); do     
            #Writes the first file to GAME_OF_DOCKERS.txt
            if docker exec container$i cat Docker$i/$count &> /dev/null >> ./GAME_OF_DOCKERS.txt; then
                #Writes a new line to GAME_OF_DOCKERS.txt 
                echo >> ./GAME_OF_DOCKERS.txt
            #If an error is produced move to next container
            else
                #If on the final container, go to first container
                if [ $i -eq 4 ]; then
                    i=1
                #If not on final container, go to next container
                else
                    ((i+=1))
                fi                
            fi
            #Writes the second file to GAME_OF_DOCKERS.txt
            if docker exec container$i cat Docker$i/$((count+1)) &> /dev/null >> ./GAME_OF_DOCKERS.txt; then
                #Writes a new line to GAME_OF_DOCKERS.txt
                echo >> ./GAME_OF_DOCKERS.txt
            fi
        done
        #Increments count by 1
        ((count+=1))
    done
}

#Function to remove text from GAME_OF_DOCKERS.txt
RemoveText()
{
    #Prompts user to enter a phrase to remove from GAME_OF_DOCKERS.txt
    echo "Enter the text you would like to remove from GAME_OF_DOCKERS.txt: "
    read text

    #Removes the specified .txt file from GAME_OF_DOCKERS.txt
    sed -i -e "s/$text//" ./GAME_OF_DOCKERS.txt
}

#Function to add text to GAME_OF_DOCKERS.txt
AddText()
{
    #Asks user for input
    echo "Please enter text to add to GAME_OF_DOCKERS.txt: "
    read text
    #Adds the text to GAME_OF_DOCKERS.txt
    echo $text >> ./GAME_OF_DOCKERS.txt
}

#Function to provide user with options based on GAME_OF_DOCKERS.txt
Inputs()
{
    #Asks user for input
    echo "Would you like to read Game of Dockers chapter? Yes/No: "
    read choice

    #If user inputs yes, run the function
    if [ $choice == "Yes" ] || [ $choice == "yes" ]; then
        #Prints the contents of GAME_OF_DOCKERS.txt
        cat ./GAME_OF_DOCKERS.txt
        echo
    #If user inputs no, move on
    elif [ $choice == "No" ] || [ $choice == "no" ]; then
        echo 
    #If user inputs invalid input, exit the script
    else
        echo "Invalid input, exiting script..."
        exit 1
    fi

    #Asks user if they want to remove some specific text
    echo "Would you like to remove some text? Yes/No: "
    read choice2

    #If user inputs yes, run the function
    if [ $choice2 == "Yes" ] || [ $choice2 == "yes" ]; then
        #Runs the function to remove text
        RemoveText
        echo
    #If user inputs no, move on
    elif [ $choice2 == "No" ] || [ $choice2 == "no" ]; then
        echo 
    #If user inputs invalid input, exit the script
    else
        echo "Invalid input, exiting script..."
        exit 1
    fi

    #Asks user if they want to add text
    echo "Would you like to add some text? Yes/No: "
    read choice3

    #If user inputs yes, add the inputted text
    if [ $choice3 == "Yes" ] || [ $choice3 == "yes" ]; then
        #Runs the function to add text
        AddText
        echo
    #If user inputs no, move on
    elif [ $choice3 == "No" ] || [ $choice3 == "no" ]; then
        echo 
    #If user inputs invalid input, exit the script
    else
        echo "Invalid input, exiting script..."
        exit 1
    fi

    #Asks user if they want to read the updated GAME_OF_DOCKERS.txt
    echo "Would you like to read the updated GAME_OF_DOCKERS.txt? Yes/No: "
    read choice4

    #If user inputs yes, print the contents of GAME_OF_DOCKERS.txt
    if [ $choice4 == "Yes" ] || [ $choice4 == "yes" ]; then
        #Prints the contents of GAME_OF_DOCKERS.txt
        cat ./GAME_OF_DOCKERS.txt
        echo
    #If user inputs no, move on
    elif [ $choice4 == "No" ] || [ $choice4 == "no" ]; then
        echo 
    #If user inputs invalid input, exit the script
    else
        echo "Invalid input, exiting script..."
        exit 1
    fi

    #Asks user if the want to terminate the script
    echo "Would you like to terminate the script? Yes/No: "
    read choice5

    #If user inputs yes, exit the script
    if [ $choice5 == "Yes" ] || [ $choice5 == "yes" ]; then
        echo "Exiting script..."
        exit 0
    #If user inputs no, restart the user prompts
    elif [ $choice5 == "No" ] || [ $choice5 == "no" ]; then
        echo
        Inputs
    #If user inputs invalid input, exit the script
    else
        echo "Invalid input, exiting script..."
        exit 1
    fi
}

#Runs functions
WriteFiles
Inputs