#!/bin/bash

# For styling/colorizing output
txtbld=$(tput bold)
txtblue=${txtbld}$(tput setaf 4)
txtgreen=${txtbld}$(tput setaf 2)
txtred=${txtbld}$(tput setaf 1)
txtyellow=${txtbld}$(tput setaf 3)
txtwhite=${txtbld}$(tput setaf 7)

# Intro Prompt
echo "${txtblue}bgit: a handy shell script for automating the standard git process"

# Reset output style
tput bold & tput setaf 7

# counts the number of repos
numrepos=$(git remote | wc -l)

# If there are no git repositories in this directory...
if [ $numrepos -eq 0 ] ; then
    echo "${txtred}no git repositories in this directory...exiting bgit${txtwhite}"
    exit 1
fi

# creates a list of repos and puts them in an array
repoarray=($(git remote))

# Grabs all new files
newfiles=$(git status --short | grep '??' | awk '{print $2}' | tr '\n' ' ')

# Grabs all modified files
modified=$(git status --short | grep M | awk '{print $2}' | tr '\n' ' ')

# Grabs all deleted files
deleted=$(git status --short | grep D | awk '{print $2}' | tr '\n' ' ')

# Reports what is staged for commit
# If there is anything to commit...
if [[ ! -z $newfiles || ! -z $modified || ! -z $deleted ]] ; then
    # Let the user know what is staged for commit
    echo "${txtwhite}The following files are staged for commit:"
# Otherwise, if there isn't anything to commit...
else
    # Let the user know that everything is up to date
    echo "${txtred}everything up-to-date...exiting bgit${txtwhite}"
    # and exit the program
    exit 0
fi

# Let the user know what is staged for commit
if [[ $newfiles ]]; then
    echo "${txtgreen}ADDED: ${txtgreen}$newfiles"
fi
if [[ $modified ]]; then
    echo "${txtblue}MODIFIED: ${txtblue}$modified"
fi
if [[ $deleted ]]; then
    echo "${txtred}DELETED: ${txtred}$deleted"
fi


while [ true ]
do
    # Prompts user if they'd like to commit the changes
    read -e -r -p "${txtwhite}commit changes?(y/n): ${txtyellow}" change
    # If the user chooses to commit the changes...
    if [[ $change == "y" || $change == "yes" ]] ; then

        # Grabs commit message
        while [ true ]
        do
            # Prompts the user to input their commit message
            read -e -r -p "${txtwhite}commit message: ${txtyellow}" message
            cmessage=("$message")
            # if the user inputted a commit message...
            if [ -n "$message" ] ; then
                # then break out of the while loop and continue with the commit...
                break
            # if the user did NOT input a commit message...
            else
                # tell the user to do so or to quit
                echo "${txtred}commit message is empty, please write a commit message"
                echo "${txtred}or type 'CTRL+C' to quit${txtwhite}"
            fi
        done

        # Reset output style
        tput bold & tput setaf 7

        # adds the modified and new files (suppresses message anyways if no files are to be committed)
        if [[ $newfiles || $modified ]] ; then
            git config advice.addEmptyPathspec false
            git add $modified $newfiles ;
        fi
        # commits the user's message (multi-word supported)
        git commit -m "$cmessage" ;

        # pushes the commit to each repository
        for ((i = 0; i < $numrepos; i++)) ; do
            git push ${repoarray[i]} ;
        done

        exit 0
    # If the user chooses to not the commit the changes ...
    elif [[ $change == "n" || $change == "no" ]] ; then

        # Reset output style
        tput bold & tput setaf 7

        # Report the git status
        git status --short

        # And let the user know no changes were committed
        echo "${txtred}no changes committed"

        exit 0
    # If the user chooses to quit...
    elif [[ $change == "q" || $change == "quit" ]] ; then
        exit 0
    # If the user continues to just press enter...
    else
        echo "${txtred}please enter y or n or type 'q' or 'quit' or 'CTRL+C' to quit${txtwhite}"
    fi
done