module PkgQuery

# File lib/pkg-query.rb, line 9
def arch(package)
    base_url = 'https://www.archlinux.org/packages'
    repos = ['core', 'community', 'extra']
    archs = ['x86_64', 'any']
    repos.product(archs).each do |repo|
        url = [base_url, repo, package].join('/')
        begin
            doc = Nokogiri::HTML(open(url))
            return doc.xpath('/html/body/div[2]/div[2]/h2').inner_text.split[1]
        rescue OpenURI::HTTPError
            next # pkg is not in this repo, next
        end
    end.empty?
    nil
end

# File lib/pkg-query.rb, line 25
def debian(release, package)
    base_url = 'https://packages.debian.org'
    url = [base_url, release, package].join('/')
    doc = Nokogiri::HTML(open(url))
    doc.xpath('/html/body/div[2]/h1').inner_text[/\((.*)\)/, 1]
end

# File lib/pkg-query.rb, line 32
def fedora(release, package, timeout=1)
    base_url = 'https://apps.fedoraproject.org/packages'
    url = [base_url, package].join('/')
    browser = Watir::Browser.new :chrome, headless: true
    browser.goto url
    begin
        Watir::Wait.until(timeout: timeout) {browser.execute_script('return jQuery.active') == 0}
    rescue; end
    doc = Nokogiri::HTML(browser.html)
    doc.xpath('/html/body/div/div/div[2]/div/div[2]/div/div[2]/div[1]/div/div[2]/div/div/table/tbody/tr').each do |tbody| 
        return tbody.xpath('td[2]/a[1]').inner_text if tbody.xpath('td[1]/div').inner_text.chop == release
    end
end

# File lib/pkg-query.rb, line 46
def ubuntu(release, package)
    base_url = 'https://packages.ubuntu.com'
    url = [base_url, release, package].join('/')
    begin
        doc = Nokogiri::HTML(open(url))
    rescue
        retry
    end
    doc.xpath('/html/body/div[1]/div[3]/h1').inner_text[/\((.*)\)/, 1]
end