# Usage: scoop create <url>
# Summary: Create a custom app manifest
# Help: Create your own custom app manifest
param($url)

function create_manifest($url) {
    $manifest = new_manifest

    $manifest.url = $url

    $url_parts = $null
    try {
        $url_parts = parse_url $url
    }
    catch {
        abort "Error: $url is not a valid URL"
    }

    $name = choose_item $url_parts "App name"
    $name = if ($name.Length -gt 0) {
        $name
    }
    else {
        file_name ($url_parts | select-object -last 1)
    }

    $manifest.version = choose_item $url_parts "Version"

    $manifest | convertto-json | out-file -filepath "$name.json" -encoding utf8
    $manifest_path = join-path $pwd "$name.json"
    write-host "Created '$manifest_path'."
}

function new_manifest() {
    @{ "homepage" = ""; "license" = ""; "version" = ""; "url" = "";
        "hash" = ""; "extract_dir" = ""; "bin" = ""; "depends" = "" }
}

function file_name($segment) {
    $segment.substring(0, $segment.lastindexof('.'))
}

function parse_url($url) {
    $uri = new-object Uri $url
    $uri.pathandquery.substring(1).split("/")
}

function choose_item($list, $query) {
    for ($i = 0; $i -lt $list.count; $i++) {
        $item = $list[$i]
        write-host "$($i + 1)) $item"
    }
    $sel = read-host $query

    if ($sel.trim() -match '^[0-9+]$') {
        return $list[$sel-1]
    }

    $sel
}

if (!$url) {
    scoop help create
}
else {
    create_manifest $url
}