#!/bin/bash

# so far requires gitmojis (txt file) and also
# bgit_gitmoji for function echomoji() that displays gitmojis in terminal and also
# bgit_init for function b_init()

# Error handling
set -e
set -o noclobber

# 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)

# Dependency check
function dependencycheck() {
    numdependencies="$#"
    dependencies=("$@")
    missingdependencies=0

    for ((i = 0; i < numdependencies; i++)) ; do
        if ! command -v "${dependencies[$i]}" &> /dev/null ; then
            echo "${txtred}✗ dependency not met: ${dependencies[$i]}${txtwhite}"
            missingdependencies=$((missingdependencies+1))
        fi
    done

    if [ $missingdependencies -gt 0 ] ; then
        echo "${txtred}✗ Please install needed dependencies${txtwhite}"
        exit 1
    fi
}

dependencycheck git

tput bold & tput setaf 7

function bgit() {
    # Intro Prompt
    echo "${txtblue} bgit: a handy shell script for git inits/commits${txtred}"

    numrepos=$(git remote | wc -l)
    numargs="$#"
    # args=("$@")

    if [[ $numargs -ge 2 ]] ; then
        echo "${txtred}✗ Improper usage!!"
        echo "${txtred}✗ Simply type bgit if this is a git repository"
        echo "${txtred}✗ Or type -h or --help for help"
        exit 1
    fi

    if [[ $numrepos -ge 1 && $numargs -eq 0 ]]; then
        dependencycheck grep awk tr

        remotearray=($(git remote))
        newfiles=$(git status --short | grep '??' | awk '{print $2}' | tr '\n' ' ')
        modified=$(git status | grep modified | awk '{print $2}' | tr '\n' ' ')
        deleted=$(git status | grep deleted | awk '{print $2}' | tr '\n' ' ')

        if [[ -n $newfiles || -n $modified || -n $deleted ]] ; then
            echo "${txtgreen} The following files are staged for commit:"
        else
            echo "${txtgreen}✓ everything up-to-date...exiting bgit${txtwhite}"
            exit 0
        fi

        if [[ $newfiles ]]; then
            echo "${txtgreen} ADDED: ${txtgreen}$newfiles"
        fi
        if [[ $modified ]]; then
            echo "${txtblue}פֿ MODIFIED: ${txtblue}$modified"
        fi
        if [[ $deleted ]]; then
            echo "${txtred}✗ DELETED: ${txtred}$deleted"
        fi

        while true
        do
            dependencycheck read
            read -e -r -p "${txtblue} commit changes?(y/n): ${txtyellow}" change
            if [[ $change == "y" || $change == "yes" ]] ; then

                while true
                do
                    read -e -r -p "${txtblue} add a gitmoji?(y/n/help): ${txtyellow}" gmojiprompt
                    if [[ $gmojiprompt == "y" || $gmojiprompt == "yes" ]] ; then
                        read -e -r -p "${txtblue} enter gitmoji: ${txtyellow}" gitmoji
                        gitmoji=":$gitmoji:"
                        break
                    elif [[ $gmojiprompt == "help" || $gmojiprompt == "h" ]] ; then
                        if command -v "bat" &> /dev/null ; then
                            bat $HOME/.config/bgit/gitmojis
                        else
                            dependencycheck less
                            less ~/scripts/gitmojis
                        fi
                    else
                        echo "${txtblue} no gitmoji specified...${txtwhite}"
                        gitmoji=""
                        break
                    fi
                done

                while true
                do
                    read -e -r -p "${txtblue} commit message: ${txtyellow}" message
                    cmessage=("$message")
                    cmessage="$(tr '[:lower:]' '[:upper:]' <<< ${cmessage:0:1})${cmessage:1}"
                    if [ "${#message}" -ge 51 ] ; then
                        echo "${txtred}✗  commit message is too large!"
                        echo "${txtred}✗ please limit to 50 or less characters${txtwhite}"
                    elif [ -n "$message" ] ; then
                        break
                    else
                        echo "${txtred}✗ commit message is empty, please write a commit message"
                        echo "${txtred}✗ or type 'CTRL+C' to quit${txtwhite}"
                    fi done

                tput bold & tput setaf 7

                if [[ $newfiles || $modified ]] ; then
                    git config credential.helper 'cache --timeout=3600';
                    git config advice.addEmptyPathspec false;
                    git add $modified $newfiles > /dev/null 2>&1
                fi

                git commit -m "$gitmoji $cmessage" > /dev/null 2>&1;
                if [[ "$gitmoji" != "" ]] ; then
                    source $HOME/scripts/bgit_echomoji
                    echomoji $gitmoji
                else
                    echo "${txtblue}$cmessage${txtwhite}"
                fi
                for ((i = 0; i < numrepos; i++)) ; do
                    git push --force ${remotearray[i]} > /dev/null 2>&1;
                done
                echo "${txtblue} bgit script has completed! goodbye!${txtwhite}"
                exit 0

            elif [[ $change == "n" || $change == "no" ]] ; then
                tput bold & tput setaf 7

                git status --short
                echo "${txtred}✗ no changes committed"
                exit 0

            elif [[ $change == "q" || $change == "quit" ]] ; then
                exit 0

            else
                echo "${txtred}✗ please enter y or n or type 'q' or 'quit' or 'CTRL+C' to quit${txtwhite}"
            fi
        done

    elif [[ $numrepos -eq 0 && $numargs -eq 0 ]]; then
        echo "${txtgreen} no git repository found, executing git init...${txtwhite}"
        source $HOME/.config/bgit/bgit_init
        b_init "$@"
    fi

    while getopts "irh" opt ; do
        case $opt in
            i)
                echo "${txtgreen} no git repository found, executing git init...${txtwhite}"
                source $HOME/.config/bgit/bgit_init
                b_init "$@"
                ;;
            r)
                source $HOME/.config/bgit/bgit_revert
                b_revert "$@"
                ;;
            h)
                source $HOME/.config/bgit/bgit_help
                b_help "$@"
                ;;
            *)
                echo "${txtred}✗ flag not recognized...${txtwhite}"
                echo "${txtred}✗ bgit exiting...${txtwhite}"
                exit 1
                ;;
        esac
    done
}

bgit "$@"