(PowerShell) Find Contact Having Email Address

Demonstrates how to fetch the Google Contact for a given email address.

Chilkat .NET Downloads Chilkat .NET Assemblies

Add-Type -Path "C:\chilkat\ChilkatDotNet47-9.5.0-x64\ChilkatDotNet47.dll"

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# --------------------------------------------------------------------------------------------------------
# Note: The code for setting up the Chilkat REST object and making the initial connection can be done once.
# Once connected, the REST object may be re-used for many REST API calls.
# (It's a good idea to put the connection setup code in a separate function/subroutine.)
# --------------------------------------------------------------------------------------------------------

# It is assumed we previously obtained an OAuth2 access token.
# This example loads the JSON access token file 
# saved by this example: Get Google Contacts OAuth2 Access Token

$jsonToken = New-Object Chilkat.JsonObject
$success = $jsonToken.LoadFile("qa_data/tokens/googleContacts.json")
if ($success -ne $true) {
    $("Failed to load googleContacts.json")
    exit
}

$gAuth = New-Object Chilkat.AuthGoogle
$gAuth.AccessToken = $jsonToken.StringOf("access_token")

$rest = New-Object Chilkat.Rest

# Connect using TLS.
$bAutoReconnect = $true
$success = $rest.Connect("www.google.com",443,$true,$bAutoReconnect)

# Provide the authentication credentials (i.e. the access token)
$rest.SetAuthGoogle($gAuth)

# ----------------------------------------------
# OK, the REST connection setup is completed..
# ----------------------------------------------

# To retrieve the contacts, we need to send the following:

# 	GET /m8/feeds/contacts/default/full?q=<emailAddress>
# 	GData-Version: 3.0

# Get the contact (or contacts) with this email address:
$emailAddressToFind = "admin@chilkatsoft.com"

$rest.AddHeader("GData-Version","3.0")
$rest.AddQueryParam("q",$emailAddressToFind)

$sbResponseBody = New-Object Chilkat.StringBuilder
$success = $rest.FullRequestNoBodySb("GET","/m8/feeds/contacts/default/full",$sbResponseBody)
if ($success -ne $true) {
    $($rest.LastErrorText)
    exit
}

# A successful response will have a status code equal to 200.
if ($rest.ResponseStatusCode -ne 200) {
    $("response status code = " + $rest.ResponseStatusCode)
    $("response status text = " + $rest.ResponseStatusText)
    $("response header: " + $rest.ResponseHeader)
    $("response body: " + $sbResponseBody.GetAsString())
    exit
}

# If the 200 response was received, then the contacts XML is contained
# in the response body.
$xml = New-Object Chilkat.Xml
$xml.LoadSb($sbResponseBody,$false)

# See below for a sample response body.
$xml.SaveXml("qa_output/google_contacts.xml")

# Now let's parse the XML...

# Get the the total number of results, the start index, and the items per page.
# We'll likely NOT get the full list, but will instead get the 1st page.
$totalResults = $xml.GetChildIntValue("openSearch:totalResults")
$startIndex = $xml.GetChildIntValue("openSearch:startIndex")
$itemsPerPage = $xml.GetChildIntValue("openSearch:itemsPerPage")
$("totalResults = " + $totalResults)
$("startIndex = " + $startIndex)
$("itemsPerPage = " + $itemsPerPage)

# We'll borrow a method from FileAccess to get the contactId from the URL string (see the code in the while loop)
$fac = New-Object Chilkat.FileAccess

# Iterate over each contact.
$numEntries = $xml.NumChildrenHavingTag("entry")
$i = 0
while ($i -lt $numEntries) {
    $xml.I = $i
    $([string]$i + 1 + " ----")
    $("title: " + $xml.GetChildContent("entry[i]|title"))

    # The entry "id" child contains a URL having this format:
    # <id>http://www.google.com/m8/feeds/contacts/{userEmail}/base/{contactId}</id>
    # Let's get the URL and parse the contactId from it..
    $idUrl = $xml.GetChildContent("entry[i]|id")
    $("id: " + $idUrl)

    # Use the parsing ability of GetFileName to get the contactId
    $contactId = $fac.GetFileName($idUrl)
    $("contactId: " + $contactId)

    $fullName = $xml.ChilkatPath("entry[i]|gd:name|gd:fullName|*")
    if ($xml.LastMethodSuccess -eq $true) {
        $("fullName: " + $fullName)
    }

    $emailAddress = $xml.ChilkatPath("entry[i]|gd:email|(address)")
    if ($xml.LastMethodSuccess -eq $true) {
        $("email address: " + $emailAddress)
    }

    $i = $i + 1
}