pu

#!/usr/bin/env bash

# pu test.txt
# pu -m "test files"  --- all files pushed
# pu                  --- push all with default message
# pu test.txt text1.txt --- push many files with default message
# pu test.txt text1.txt -m "mutiples files"
# echo "\tpu [ -h | --help ] [ -m | --message ] <files>"

help() {
    echo "NAME"
    echo -e "\t pu - add commit and push your files to github "
    echo
    echo "SYNOPSIS"
    echo -e "\t  pu [OPTION]... [FILE]..."
    echo
    echo "DESCRIPTION"
    echo -e "\tpu command helps you to add, commit and push your files to gihub, making the assesments much faster to finish." | fmt -u -w 100
    echo
    echo "OPTIONS"
    echo -e "\t-m, --message=MESSAGE"
    echo -e "\t\t use a commit message instead of the default one."
    echo -e "\t-h, --help"
    echo -e "\t\t display this help screen"
    echo
    echo -e "\tExit status:"
    echo -e "\t\t0\tif OK"
    echo -e "\t\t2\tif invalid option or syntax"
    echo
    echo "AUTHOR"
    echo -e "\tWritten by Abdourahamane (Abissa) Issaka Sani"
    echo -e "\tSoftware Engineering Student,"
    echo -e "\tAfrican Leadership University - Rwanda"
    echo
    echo -e "\t\tOctober 2022"
    exit 0
}

invalid_option() {
    echo "invalid option"
    echo "Try 'pu -h' for more information."
    exit 2
}

process_options() {
    ARGUMENTS=$(getopt -a -n pu --options hm: --longoptions help,message: -- "$@")

    eval set -- "$ARGUMENTS"

    while :; do
        case "$1" in
        -m | --message)
            commit="$2"
            echo $commit
            shift 2
            ;;
        -h | --help)
            help
            shift 2
            break
            ;;
        --)
            shift
            break
            ;;
        \?)
            invalid_option
            exit 2
            ;;
        esac
    done
}

# check if changes have been made
check_changes() {
    if [ $(git status --porcelain | wc -l) -eq 0 ]; then
        echo "You have made NO change"
        exit 2
    fi
}

pull_push() {
    git pull
    git push
}

# case of no arguemnts AND options
if [ $# -eq 0 ]; then
    # check if changes have been made
    check_changes
    git add .
    git commit -m ":robot: automated commit of one or many files"
    pull_push
else
    ARGUMENTS=$(getopt -n pu --options hm: --longoptions help,message: -- "$@")

    eval set -- "$ARGUMENTS"

    while :; do
        case "$1" in
        -h | --help)
            help
            break
            ;;
        -m | --message)
            custom_commit_message="$2"
            shift 2
            ;;
        --)
            shift
            break
            ;;
        \?)
            invalid_option
            exit 2
            ;;
        esac
    done

    check_changes

    if [ "$custom_commit_message" ]; then
        if [ $# -eq 0 ]; then
            git add .
            git commit -m "$custom_commit_message"
        else
            for FILE in "$@"; do
                if [ ! -f $FILE ]; then
                    echo "$FILE is not a file"
                else
                    git add $FILE
                fi
            done
            git commit -m "$custom_commit_message"
        fi
    else
        for FILE in "$@"; do
            if [ ! -f $FILE ]; then
                echo "$FILE is not a file"
            else
                git add $FILE
                git commit -m ":robot: automated commit of $FILE"
            fi
        done
    fi
    pull_push
fi