(C) Outlook -- List Attachments for a Specific Message

Demonstrates how to list the attachments for a particular email message.

Note: This example requires Chilkat v9.5.0.67 or greater.

This example applies to: Exchange Online | Office 365 | Hotmail.com | Live.com | MSN.com | Outlook.com | Passport.com

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#include <C_CkHttp.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    HCkStringBuilder sbResponse;
    const char *messageId;
    BOOL success;
    HCkJsonObject json;

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

    http = CkHttp_Create();

    // 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).

    CkHttp_putAuthToken(http,"MICROSOFT_GRAPH_ACCESS_TOKEN");

    sbResponse = CkStringBuilder_Create();

    // Sends:  GET /users/{user_id | userPrincipalName}/messages/{message_id}/attachments
    // Note: It is also possible to use the literal string "me" for the current logged-on user.
    // For example: GET /me/messages/{message_id}/attachments

    CkHttp_ClearUrlVars(http);
    CkHttp_SetUrlVar(http,"userPrincipalName","chilkatsoft@outlook.com");

    // Assume we already have a message ID from previously listing the messages in a folder
    messageId = "AAMkADYzZWE3YmZmLWU0YzgtNGNkZC04MGE1LWFiYTFlNTRlY2QwYQBGAAAAAAAu7cUXL5YOTrdsUIw7-v8FBwBUcG0qWqkmQYqWLHQataQxAACnwqJUAABUcG0qWqkmQYqWLHQataQxAACnwrnOAAA=";
    CkHttp_SetUrlVar(http,"message_id",messageId);

    // Send the request to list the messages.
    success = CkHttp_QuickGetSb(http,"https://graph.microsoft.com/v1.0/users/{$userPrincipalName}/messages/{$message_id}/attachments",sbResponse);
    if ((success != TRUE) && (CkHttp_getLastStatus(http) == 0)) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbResponse);
        return;
    }

    json = CkJsonObject_Create();
    CkJsonObject_LoadSb(json,sbResponse);
    CkJsonObject_putEmitCompact(json,FALSE);

    printf("Status code = %d\n",CkHttp_getLastStatus(http));
    if (CkHttp_getLastStatus(http) != 200) {
        printf("%s\n",CkJsonObject_emit(json));
        printf("Failed.\n");
    }

    CkStringBuilder_Clear(sbResponse);
    CkJsonObject_EmitSb(json,sbResponse);
    CkStringBuilder_WriteFile(sbResponse,"qa_output/attachments.txt","utf-8",FALSE);

    printf("OK\n");


    CkHttp_Dispose(http);
    CkStringBuilder_Dispose(sbResponse);
    CkJsonObject_Dispose(json);

    }