#!/bin/bash
# go command

function go() {
    ARG1=$1; ARG2=$2; ARG3=$3;

    if [[ -z "$ARG1" ]]; then
        __func_head "[MODE] SITE TARGET_DIR"
        __func_help "<up|down> [MODE] TARGET_DIR"
        echo
        return 1
    fi

    NAV=false;
    case "$ARG1" in
        p)
            CC='pushd' ;;
        c)
            CC='cd' ;;
        e)
            CC='echo' ;;
        up|down)
            NAV=true ;;
        *)
            CC='cd'
            ARG3=$ARG2
            ARG2=$ARG1
            ;;
    esac

    if [ $NAV = true ]; then
        __go_nav $ARG1 $ARG2 $ARG3
        return 0;
    fi

    if [[ -f ~/.go_conf ]]; then
        source ~/.go_conf
    else
        echo "Cannot source config file"
        return 1;
    fi

    SITE=$(ls $UDEV|grep -m 1 $ARG2)
    if [[ -z "$SITE" ]]; then
        echo "No such site: $ARG2"
        ls $UDEV -1 | sed 's/^/  /g'
        return 1
    fi

    if [[ -z "$ARG3" ]]; then
        $CC $UDEV/$SITE
        return 0
    fi

    for LOC in ${LOCS[@]}
    do
        LOCATION=$(ls $UDEV/$SITE/$LOC/ 2> /dev/null | grep -m 1 $ARG3)
        if [[ -n "$LOCATION" ]]; then
            LOCATION="$LOC/$LOCATION"
            break;
        fi
    done

    if [[ -n "$LOCATION" ]]; then
        $CC $UDEV/$SITE/$LOCATION/
        return 0
    else
        echo "Location '$ARG3' not found under: $SITE"
        return 1
    fi

    return 1
}

__go_nav() {
    ARG1=$1; ARG2=$2; ARG3=$3;
    case "$ARG2" in
        p)
            CC='pushd' ;;
        c|"")
            CC='cd' ;;
        e)
            CC='echo' ;;

        *)
            CC='cd'
            ARG3=$ARG2
            ;;
    esac

    if [[ "$ARG1" == "up" ]]; then
        IFS="/" read -a PWDA <<< "$(pwd)"

        MARK=0
        LISTOF=''
        for i in "${!PWDA[@]}"
        do
            if [[ "${PWDA[$i]}" =~ $ARG3 ]]; then
                MARK=$i
            fi

            if [[ -n "${PWDA[$i]}" ]]; then
                LISTOF="$LISTOF\n    ${PWDA[$i]}";
            fi
        done

        if [ -z "$ARG3" ]; then
            MARK=$(( $MARK - 1 ))
        fi

        if [[ $MARK -eq 0 ]]; then
            echo "No such token in up stack: $ARG3"
            echo -e $LISTOF;
            echo
            return 1
        fi

        DIR='/'

        for (( i=1; i<=$MARK; i++ ))
        do
            DIR="$DIR${PWDA[$i]}/"
        done

    else
        if [ -z "$ARG3" ]; then
            DIR=$(find . -maxdepth 1 -type d | head -n 2 | tail -n 1)
        else 
            DIR=$(find . -type d -name '*'$ARG3'*')
            if [[ -z $DIR ]]; then

                echo "Directory not found: $ARG3"
                return 1
            fi
        fi
    fi

    $CC $DIR
}