Class: Stalkr::USPS

Inherits:
Base
  • Object
show all
Defined in:
lib/stalkr/usps.rb

Instance Method Summary collapse

Methods inherited from Base

#cleanup_html, extract_id, #fetchurl, is_valid?, #strip_tags

Instance Method Details

#track(id) ⇒ Object 



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# File 'lib/stalkr/usps.rb', line 18

def track(id)

    # cleanup id
    id.gsub!(/ /, '')

    url = "http://trkcnfrm1.smi.usps.com/PTSInternetWeb/InterLabelInquiry.do?origTrackNum=%CODE%"

    url.gsub!(/%CODE%/, id)
    html = fetchurl(url)

    begin

        info_scraper = Scraper.define do

            array :details
            array :info
            array :txt

            process "span.mainTextbold", :info => :text
            process "td.mainTextbold", :details => :text
            process "td.mainText", :txt => :text

            result :details, :info, :txt

        end

        scrape = info_scraper.scrape(html)

        # verify its the correct response page
        if scrape.info[0].gsub(/ /, '') != id then
            raise "USPS scraper failed"
        end

        # extract and return
        ret = Result.new(:USPS)
        if scrape.txt.find{ |t| t =~ /There is no record of this item/ } then
            ret.status = UNKNOWN
        elsif scrape.info.find{ |i| i.downcase == "delivered" } then
            ret.status = DELIVERED
        else
            ret.status = UNKNOWN
        end

        if scrape.details and not scrape.details.empty? then
            if scrape.details[0] =~ /^(.*?), (.*? \d+, \d+), (\d+:\d+ .m), (.*?)$/ then
                ret.location = $4
                # not sure if this time is always in EST or the time of the area in which it was delivered?
                ret.updated_at = DateTime.strptime( "#{$2} #{$3} -0500", "%B %d, %Y %I:%M %p %z" ).to_time
                if ret.status == DELIVERED then
                    ret.delivered_at = ret.updated_at
                end

            elsif scrape.details[0] =~ /Electronic Shipping Info Received/ then
                ret.status = IN_TRANSIT
            end

        elsif s = scrape.txt.find{ |t| t =~ /files offline/ }
            s =~ /at (\d+:\d+ .m) on (.*? \d+, \d+) in (.*?)\.$/
            ret.location = $3
            # not sure if this time is always in EST or the time of the area in which it was delivered?
            ret.updated_at = DateTime.strptime( "#{$2} #{$1} -0500", "%B %d, %Y %I:%M %p %z" ).to_time
            if ret.status == DELIVERED then
                ret.delivered_at = ret.updated_at
            end

        end

        return ret

    rescue Exception => ex
        raise Stalkr::Error.new(ex, html)

    end

end