(Lianja) Find Contact Having Email Address

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

Chilkat Lianja Extension Download Chilkat Lianja Extension

// 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

loJsonToken = createobject("CkJsonObject")
llSuccess = loJsonToken.LoadFile("qa_data/tokens/googleContacts.json")
if (llSuccess <> .T.) then
    ? "Failed to load googleContacts.json"
    release loJsonToken
    return
endif

loGAuth = createobject("CkAuthGoogle")
loGAuth.AccessToken = loJsonToken.StringOf("access_token")

loRest = createobject("CkRest")

// Connect using TLS.
llBAutoReconnect = .T.
llSuccess = loRest.Connect("www.google.com",443,.T.,llBAutoReconnect)

// Provide the authentication credentials (i.e. the access token)
loRest.SetAuthGoogle(loGAuth)

// ----------------------------------------------
// 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:
lcEmailAddressToFind = "admin@chilkatsoft.com"

loRest.AddHeader("GData-Version","3.0")
loRest.AddQueryParam("q",lcEmailAddressToFind)

loSbResponseBody = createobject("CkStringBuilder")
llSuccess = loRest.FullRequestNoBodySb("GET","/m8/feeds/contacts/default/full",loSbResponseBody)
if (llSuccess <> .T.) then
    ? loRest.LastErrorText
    release loJsonToken
    release loGAuth
    release loRest
    release loSbResponseBody
    return
endif

// A successful response will have a status code equal to 200.
if (loRest.ResponseStatusCode <> 200) then
    ? "response status code = " + str(loRest.ResponseStatusCode)
    ? "response status text = " + loRest.ResponseStatusText
    ? "response header: " + loRest.ResponseHeader
    ? "response body: " + loSbResponseBody.GetAsString()
    release loJsonToken
    release loGAuth
    release loRest
    release loSbResponseBody
    return
endif

// If the 200 response was received, then the contacts XML is contained
// in the response body.
loXml = createobject("CkXml")
loXml.LoadSb(loSbResponseBody,.F.)

// See below for a sample response body.
loXml.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.
lnTotalResults = loXml.GetChildIntValue("openSearch:totalResults")
lnStartIndex = loXml.GetChildIntValue("openSearch:startIndex")
lnItemsPerPage = loXml.GetChildIntValue("openSearch:itemsPerPage")
? "totalResults = " + str(lnTotalResults)
? "startIndex = " + str(lnStartIndex)
? "itemsPerPage = " + str(lnItemsPerPage)

// We'll borrow a method from FileAccess to get the contactId from the URL string (see the code in the while loop)
loFac = createobject("CkFileAccess")

// Iterate over each contact.
lnNumEntries = loXml.NumChildrenHavingTag("entry")
i = 0
do while i < lnNumEntries
    loXml.I = i
    ? str(i + 1) + " ----"
    ? "title: " + loXml.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..
    lcIdUrl = loXml.GetChildContent("entry[i]|id")
    ? "id: " + lcIdUrl

    // Use the parsing ability of GetFileName to get the contactId
    lcContactId = loFac.GetFileName(lcIdUrl)
    ? "contactId: " + lcContactId

    lcFullName = loXml.ChilkatPath("entry[i]|gd:name|gd:fullName|*")
    if (loXml.LastMethodSuccess = .T.) then
        ? "fullName: " + lcFullName
    endif

    lcEmailAddress = loXml.ChilkatPath("entry[i]|gd:email|(address)")
    if (loXml.LastMethodSuccess = .T.) then
        ? "email address: " + lcEmailAddress
    endif

    i = i + 1
enddo


release loJsonToken
release loGAuth
release loRest
release loSbResponseBody
release loXml
release loFac