#!/usr/bin/env bash
set -euo pipefail

dest_dir="$HOME/Pictures/Wallpapers"
rmflag=0

usage() {
    echo "Usage: $0 [-r] <src-file> [src-file ...]"
    echo "  -r    remove source file after successful conversion"
    exit 2
}

while getopts ":r" opt; do
    case "$opt" in
        r) rmflag=1 ;;
        *) usage ;;
    esac
done
shift $((OPTIND-1))

# Require at least one file
if [ "$#" -lt 1 ]; then
    echo "Error: no source files provided"
    usage
fi

# Check ImageMagick
if ! command -v magick >/dev/null 2>&1; then
    echo "Error: ImageMagick 'magick' command not found"
    exit 1
fi

mkdir -p "$dest_dir"
timestamp=$(date +%Y%m%d%H%M%S)
counter=0 

# Process each file one by one
for src in "$@"; do
    if [ ! -e "$src" ]; then
        echo "Error: '$src' does not exist, skipping"
        continue
    fi

    counter=$((counter + 1))

    dst="$dest_dir/wallpaper${timestamp}_${counter}.png"

    if magick -- "$src" "$dst"; then
        echo "Created: $dst"
        if [ "$rmflag" -eq 1 ]; then
            rm -f -- "$src"
        fi
    else
        echo "Error: conversion failed for '$src'"
    fi
done

exit 0