DataFlex GMail: Search for Messages with Subject Containing a Word

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Return messages matching the specified query. See https://support.google.com/mail/answer/7190?hl=en for additional information about search operators. This example searches for all emails having the whole word "ADVChina" in the subject.

Documentation: https://support.google.com/mail/answer/7190?hl=en

CURL Command

curl -X GET https://www.googleapis.com/gmail/v1/users/me/messages?q=subject:ADVChina \
    --header "Authorization: Bearer GMAIL_TOKEN"

DataFlex Example

Use ChilkatAx-9.5.0-win32.pkg

Procedure Test
    Handle hoRest
    Boolean iSuccess
    Boolean iBTls
    Integer iPort
    Boolean iBAutoReconnect
    Variant vSbResponseBody
    Handle hoSbResponseBody
    Integer iRespStatusCode
    Handle hoJsonResponse
    Integer i
    Integer iCount_i
    Integer iResultSizeEstimate
    String sId
    String sThreadId
    String sTemp1
    Integer iTemp1

    Get Create (RefClass(cComChilkatRest)) To hoRest
    If (Not(IsComObjectCreated(hoRest))) Begin
        Send CreateComObject of hoRest
    End

    //  URL: https://www.googleapis.com/gmail/v1/users/me/messages?q=subject:ADVChina
    Move True To iBTls
    Move 443 To iPort
    Move True To iBAutoReconnect
    Get ComConnect Of hoRest "www.googleapis.com" iPort iBTls iBAutoReconnect To iSuccess
    If (iSuccess <> True) Begin
        Get ComConnectFailReason Of hoRest To iTemp1
        Showln "ConnectFailReason: " iTemp1
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComAddHeader Of hoRest "Authorization" "Bearer GMAIL_TOKEN" To iSuccess

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbResponseBody
    If (Not(IsComObjectCreated(hoSbResponseBody))) Begin
        Send CreateComObject of hoSbResponseBody
    End
    Get pvComObject of hoSbResponseBody to vSbResponseBody
    Get ComFullRequestNoBodySb Of hoRest "GET" "/gmail/v1/users/me/messages?q=subject:ADVChina" vSbResponseBody To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRest To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComResponseStatusCode Of hoRest To iRespStatusCode
    If (iRespStatusCode >= 400) Begin
        Showln "Response Status Code = " iRespStatusCode
        Showln "Response Header:"
        Get ComResponseHeader Of hoRest To sTemp1
        Showln sTemp1
        Showln "Response Body:"
        Get ComGetAsString Of hoSbResponseBody To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonResponse
    If (Not(IsComObjectCreated(hoJsonResponse))) Begin
        Send CreateComObject of hoJsonResponse
    End
    Get pvComObject of hoSbResponseBody to vSbResponseBody
    Get ComLoadSb Of hoJsonResponse vSbResponseBody To iSuccess

    //  See the Online Tool for Generating JSON Parse Code

    Get ComIntOf Of hoJsonResponse "resultSizeEstimate" To iResultSizeEstimate
    Move 0 To i
    Get ComSizeOfArray Of hoJsonResponse "messages" To iCount_i
    While (i < iCount_i)
        Set ComI Of hoJsonResponse To i
        Get ComStringOf Of hoJsonResponse "messages[i].id" To sId
        Get ComStringOf Of hoJsonResponse "messages[i].threadId" To sThreadId
        Move i + 1 To i
    Loop



End_Procedure

Sample JSON Response Body

{
  "messages": [
    {
      "id": "166e50fed0b9b0cb",
      "threadId": "166e50fed0b9b0cb"
    },
    {
      "id": "166c12e5fee013fe",
      "threadId": "166c12e5fee013fe"
    },
    {
      "id": "1669cc9a926bb8c1",
      "threadId": "1669cc9a926bb8c1"
    },
    {
      "id": "16678c485e7f0a0c",
      "threadId": "16678c485e7f0a0c"
    }
  ],
  "resultSizeEstimate": 4
}