(Unicode C) Create AMP for Email

Demonstrates how to create an email that has the AMP for Email Format.

See AMP for Email specification for more information.

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#include <C_CkEmailW.h>
#include <C_CkStringBuilderW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkEmailW email;
    HCkStringBuilderW sbAmp4Html;

    success = FALSE;

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

    email = CkEmailW_Create();

    CkEmailW_putSubject(email,L"Sample AMP for Email");
    CkEmailW_putFrom(email,L"mary@example.com");
    CkEmailW_AddTo(email,L"Joe",L"joe@example.com");

    // Create the following AMP for Email HTML

    // <!doctype html>
    // <html amp4email>
    // <head>
    //   <meta charset="utf-8">
    //   <style amp4email-boilerplate>body{visibility:hidden}</style>
    //   <script async src="https://cdn.ampproject.org/v0.js"></script>
    // </head>
    // <body>
    // Hello, world.
    // </body>
    // </html>

    sbAmp4Html = CkStringBuilderW_Create();
    CkStringBuilderW_Append(sbAmp4Html,L"<!doctype html>");
    CkStringBuilderW_Append(sbAmp4Html,L"<html amp4email>");
    CkStringBuilderW_Append(sbAmp4Html,L"<head>");
    CkStringBuilderW_Append(sbAmp4Html,L"<meta charset=\"utf-8\">");
    CkStringBuilderW_Append(sbAmp4Html,L"<style amp4email-boilerplate>body{visibility:hidden}</style>");
    CkStringBuilderW_Append(sbAmp4Html,L"<script async src=\"https://cdn.ampproject.org/v0.js\"></script>");
    CkStringBuilderW_Append(sbAmp4Html,L"</head>");
    CkStringBuilderW_Append(sbAmp4Html,L"<body>");
    CkStringBuilderW_Append(sbAmp4Html,L"Hello, world.");
    CkStringBuilderW_Append(sbAmp4Html,L"</body>");
    CkStringBuilderW_Append(sbAmp4Html,L"</html>");

    // We want to build a multipart/alternative email, where the 1st alternative body
    // is text/plain, the 2nd is text/x-amp-html, and the last is text/html.
    // (Some email clients will only render the last MIME part, so we recommend placing the text/x-amp-html MIME part before the text/html MIME part.)

    // First create a plain-text email body:
    CkEmailW_AddPlainTextAlternativeBody(email,L"Hello World in plain text!");

    // Now add the text/x-amp-html.
    CkEmailW_SetTextBody(email,CkStringBuilderW_getAsString(sbAmp4Html),L"text/x-amp-html");

    // Now add an HTML body..
    CkEmailW_AddHtmlAlternativeBody(email,L"<span>Hello World in HTML!</span>");

    // See what we have:
    wprintf(L"%s\n",CkEmailW_getMime(email));

    // This is the result:

    // MIME-Version: 1.0
    // Date: Thu, 30 May 2019 09:37:56 -0500
    // Message-ID: <923A689FF657170A9F662B4CE87978AB1EBD4DBD@CHILKATSLICE>
    // Content-Type: multipart/alternative;
    //  boundary="------------040205090807060906020803"
    // X-Priority: 3 (Normal)
    // Subject: Sample AMP for Email
    // From: mary@example.com
    // To: Joe <joe@example.com>
    // 
    // --------------040205090807060906020803
    // Content-Transfer-Encoding: 7bit
    // Content-Type: text/plain; charset=us-ascii; format=flowed
    // 
    // Hello World in plain text!
    // --------------040205090807060906020803
    // Content-Transfer-Encoding: 7bit
    // Content-Type: text/x-amp-html; charset=us-ascii
    // 
    // <!doctype html><html amp4email><head><meta charset="utf-8"><style amp4email-boilerplate>body{visibility:hidden}</style><script async src="https://cdn.ampproject.org/v0.js"></script></head><body>Hello, world.</body></html>
    // --------------040205090807060906020803
    // Content-Transfer-Encoding: 7bit
    // Content-Type: text/html; charset=us-ascii
    // 
    // <span>Hello World in HTML!</span>
    // 
    // --------------040205090807060906020803--


    CkEmailW_Dispose(email);
    CkStringBuilderW_Dispose(sbAmp4Html);

    }