(C++) Outlook -- Search Messages in a Particular Folder

Demonstrates search the messages in a particular Outlook mailbox folder.

This uses the OData $filter and $search system query options. See OData System Query Options for general information.

Also see OData URL Conventions for information about $filter, $search and other query options.

This example demonstrates the following searches:

Find emails from a particular email address.
Find emails where the subject contains a particular word or phrase.
Using an "AND" expression.
Find emails received in the last 24 hours.
Find emails received in October 2016
Find unread emails
Find emails containing a particular phrase in the body.
Free-text search of a keyword or phrase.
Free-text search of an email address.

Note: This example requires Chilkat v9.5.0.68 or greater.

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#include <CkHttp.h>
#include <CkStringBuilder.h>
#include <CkHashtable.h>
#include <CkJsonObject.h>
#include <CkDateTime.h>
#include <CkDtObj.h>

void ChilkatSample(void)
    {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http;

    // Use your previously obtained access token here:
    // See the following examples for getting an access token:
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD v2.0 Endpoint).
    //    Get Microsoft Graph OAuth2 Access Token (Azure AD Endpoint).
    //    Refresh Access Token (Azure AD v2.0 Endpoint).
    //    Refresh Access Token (Azure AD Endpoint).

    http.put_AuthToken("MICROSOFT_GRAPH_ACCESS_TOKEN");

    CkStringBuilder sbResponse;

    // In this example, we'd like to get the messages in the folder "/Inbox",
    // but we must specify the corresponding folder_id.  The best way to do this is to create
    // a local map of folderPaths-to-folderIds.
    // This example does it:  Create Outlook Folder Map)
    CkHashtable htFolderMap;
    CkStringBuilder sbMap;
    sbMap.LoadFile("qa_data/outlook/folderMap.xml","utf-8");
    htFolderMap.AddFromXmlSb(sbMap);

    // Get the ID for the "/Inbox" folder:
    const char *folderId = htFolderMap.lookupStr("/Inbox");
    if (htFolderMap.get_LastMethodSuccess() != true) {
        std::cout << "Folder ID not found" << "\r\n";
        return;
    }

    bool success = true;
    CkJsonObject json;
    json.put_EmitCompact(false);

    http.SetUrlVar("folder_id",folderId);
    http.SetUrlVar("select","subject,from");

    // -----------------------------------------------------------------------------------------------------
    // Only return emails from "chilkat.support@gmail.com"
    http.SetUrlVar("filter","from/emailAddress/address eq 'chilkat.support@gmail.com'");

    // To return the full content of each email, omit the "&select=..." part of the URL.
    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";

    // -----------------------------------------------------------------------------------------------------
    // Only return emails where the subject contains "Amazon"
    http.SetUrlVar("filter","contains(subject,'Amazon')");

    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";

    // -----------------------------------------------------------------------------------------------------
    // Only return emails where the subject starts with "this email" and the from address is support@chilkatsoft.com
    // (the startswith function is case insensitive)
    http.SetUrlVar("filter","startswith(subject,'this email') and (from/emailAddress/address eq 'support@chilkatsoft.com')");

    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";

    // -----------------------------------------------------------------------------------------------------
    // Only return emails received within the last 24 hours
    CkStringBuilder sbExpression;

    sbExpression.Append("receivedDateTime ge ");
    CkDateTime dt;
    dt.SetFromCurrentSystemTime();
    dt.AddDays(-1);
    sbExpression.Append(dt.getAsTimestamp(false));

    http.SetUrlVar("filter",sbExpression.getAsString());

    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";

    // -----------------------------------------------------------------------------------------------------
    // Only return emails received in October 2016
    CkDtObj dtObj;
    dtObj.put_Year(2016);
    dtObj.put_Month(10);
    dtObj.put_Day(1);
    dtObj.put_Utc(true);
    dt.SetFromDtObj(dtObj);

    sbExpression.Clear();
    sbExpression.Append("(receivedDateTime ge ");
    sbExpression.Append(dt.getAsTimestamp(false));
    sbExpression.Append(") and (receivedDateTime lt ");
    dtObj.put_Month(11);
    dt.SetFromDtObj(dtObj);
    sbExpression.Append(dt.getAsTimestamp(false));
    sbExpression.Append(")");

    // This is the expression we just built:  (receivedDateTime ge 2016-10-01T00:00:00Z) and (receivedDateTime lt 2016-11-01T00:00:00Z)
    std::cout << sbExpression.getAsString() << "\r\n";

    http.SetUrlVar("filter",sbExpression.getAsString());

    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";

    // -----------------------------------------------------------------------------------------------------
    // Return unread emails
    http.SetUrlVar("filter","isRead eq false");

    // success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";

    // -----------------------------------------------------------------------------------------------------
    // Return emails with a plain-text or HTML body containing the phrase "Outlook 365"
    http.SetUrlVar("filter","contains(body/content,'Outlook 365')");

    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$filter={$filter}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";

    // -----------------------------------------------------------------------------------------------------
    // Use the $search query option instead of $filter.
    // $search is a free-text search over whatever fields the server deems appropriate, such as in the subject,
    // body, address fields, etc.

    // Search for the word Amazon
    http.SetUrlVar("search","Amazon");

    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$search={$search}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";

    // -----------------------------------------------------------------------------------------------------
    // Search for chilkatsoft.com
    // Some chars, such as the "." make it necessary to enclose the search expression in double-quotes.
    http.SetUrlVar("search","\"chilkatsoft.com\"");

    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/me/mailFolders/{$folder_id}/messages?$search={$search}&$select={$select}",sbResponse);
    if ((success != true) && (http.get_LastStatus() == 0)) {
        std::cout << http.lastErrorText() << "\r\n";
        return;
    }

    json.LoadSb(sbResponse);
    std::cout << json.emit() << "\r\n";
    }