dotfiles/.scripts/vimplugin.sh

#!/bin/sh

DIR="/etc/vim/pack/plugins"
START="$DIR/start"
OPT="$DIR/opt"
LIST="/etc/vim/pack/list"

help() {
    BOLD=$(tput bold)
    NORMAL=$(tput sgr0)

    	echo "${BOLD}NAME${NORMAL}"
	echo "        vimplugin - vim plugin manager"
	echo ""
	echo "${BOLD}SYNOPSIS${NORMAL}"
       	echo "        ./vimplugin.sh <command> [<arg1> <arg2>]"
	echo ""
	echo "${BOLD}COMMANDS${NORMAL}"
	echo "        list <number>"
	echo "                Prints all the installed plugins, <number> prints \
just the plugin in that position."
	echo ""
	echo "        install <url> [\"start\"/\"opt\"]"
	echo "                Install a new plugin, <url> need to be a valid \
GitHub URL,
                start/opt to install the plugin in the start/opt directory \
(default: start)."
	echo ""
	echo "        update"
	echo "                Installs/updates all plugins from the config file."
	echo ""
	echo "        remove"
	echo "                Remove plugin, script will prompt a selection menu."
}

list() {
    if [ -z "$1" ]; then
        echo "Listing all installed plugins.."
    fi

    PLUGIN="$(find $DIR -mindepth 2 -maxdepth 2 \
        | sort | awk -F '/' '{ print $(NF-1)"/"$NF }')"
    NUM=0
    for p in $PLUGIN; do
        NUM=$(( NUM + 1 ))
        
        if [ -z "$1" ]; then
            echo "$NUM) $p"
        elif [ "$NUM" = "$1" ]; then
            echo "$p"
        fi
    done
}

install() {
    # Check if correct git URL
    if [ -z "$(echo $1 | sed -nr \
        's/^https:\/\/github\.com\/(.*\/.*).git$/\1/p')" ]; then
        echo "script: url invalid: $1"
    else    
        # cd to correct directory if called from the CLI
        if [ -z "$2" ]; then
            # Default is directory 'start'
            cd "$START"
        elif [ "$2" != script ]; then
            if [ "$2" = "start" ]; then
                cd "$START"
            elif [ "$2" = "opt" ]; then
                cd "$OPT"
            fi
        fi

        REPO="$(basename $1 .git)"
        if [ -d "$REPO" ]; then
            cd "$REPO"
            sudo git pull --force 1> /dev/null
            cd ".."
            echo "Updated: $REPO"
        else
            sudo git clone "$1" 2> /dev/null

            # Add git URL to config file
            if [ -z "$2" ]; then
                # Append before 'opt:'
                sudo sed -i '/opt:/ i '$1 $LIST
            elif [ "$2" != "script" ]; then
                if [ "$2" = "start"  ]; then
                    # Append before 'opt:'
                    sudo sed -i '/opt:/ i '$1 $LIST
                elif [ "$2" = "opt" ]; then
                    # Append at the end of the file
                    sudo sed -i '$ a '$1 $LIST
                fi
            fi
            
            echo "Installed: $REPO"
        fi
    fi
}

update() {
    echo "Updating.."

    sudo mkdir -p $START
    sudo mkdir -p $OPT
    sudo touch $LIST
    if [ ! -s $LIST ]; then
        # Append to empty file
        sudo sh -c 'echo "start:" >> '$LIST
        sudo sh -c 'echo "opt:" >> '$LIST
    fi
   
    cd $START
    while read l; do
        if [ "$l" = "start:"  ]; then
            cd "$START"
        elif [ "$l" = "opt:"  ]; then
            cd "$OPT"
        else
            install $l "script"
        fi
    done < $LIST
}

remove() {
    list
    echo "Enter the number to remove: " && read OPTION

    if [ -z "$(echo $OPTION | sed -nr 's/^([0-9]+)$/\1/p')" ]; then
        echo "Please select a number"
    else
        TO_REMOVE="$(list $OPTION)"
        if [ -n "$TO_REMOVE" ]; then
            sudo rm -rf $DIR/$TO_REMOVE
            sudo sed -i '/'"$(basename $TO_REMOVE)"'\.git/d' $LIST
        fi
    fi
}

if type "$1" 2> /dev/null | grep -q "function"; then
    "$@"
else
    echo "script: command not found: $1"
fi