#!/usr/bin/env nu

def main [--url(-u): string, --download(-d)] {
    let clipboard = xclip -o
    let url = $url. | default $clipboard
    match ($url | str contains "reddit.com") {
        true => ($url | get_url)
        false => ("URL is not a valid Reddit URL"; exit 1)
    } | download_url $download
}


# Documentation for handle_url
def download_url [download: bool] {
    let input = $in
    match $download {
        true => (wget $input)
        false => (kitten icat $input)
    }
}

def get_url [] {
    let input = $in
    let decoded = $input | url decode
    match ($decoded | str contains "preview") {
        true => ( ($decoded | parse "{reddit}={imageUrl}?{params}").imageUrl.0 | str replace "preview" "i" )
        false => ($decoded | parse "{reddit}={imageUrl}").imageUrl.0
    }
}