#!/bin/bash

OUTPUT_PATH="./output/"
INPUT_PATH="./input/"
FORCE=false

function show_help
{
    echo "Usage:"
    echo "  -h - show help:"
    echo "  -i path - set input path (default='./')"
    echo "  -o path - set output path (default='./')"
    echo "  -f - force move - removes name-colliding files from output folder"
}

while getopts "fhi:o:" opt; do
    case "$opt" in
    h|\?)
        show_help
        exit 0
        ;;
    i)  INPUT_PATH=$OPTARG
        ;;
    o)  OUTPUT_PATH=$OPTARG
        if [[ ! -d $OUTPUT_PATH ]]; then
            echo "ERROR: Specified output path is not a directory"
            exit 1
        fi
        ;;
    f) FORCE=true

        ;;
    esac
done


if [[ ! -d $INPUT_PATH ]]; then
    echo "ERROR: Specified input path is not a directory"
    exit 1
fi

mkdir -p $OUTPUT_PATH

I=$((-1))

for f in $INPUT_PATH/*
do
    I=$((I+1))
    if [[ -e $OUTPUT_PATH/$I ]]; then
        if [ $FORCE == true ]; then
        echo F
        rm -rf $OUTPUT_PATH/$I
      else
        echo NF
        continue
      fi
    fi
    mv $f $OUTPUT_PATH/$I
done