order: 3
id: outlook-item-body-add-inline-base64-image
name: Add inline Base64-encoded image to message or appointment body (Compose)
description: Add an inline Base64-encoded image to the body of a message or appointment being composed.
host: OUTLOOK
api_set:
    Mailbox: '1.8'
script:
    content: |-
        document.getElementById("prepend-image").addEventListener("click", prependImage);
        document.getElementById("append-image").addEventListener("click", appendImage);

        const base64String = "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";

        function prependImage() {
          // Insert the Base64-encoded image to the beginning of the body.
          Office.context.mailbox.item.addFileAttachmentFromBase64Async(base64String, "sample.png", { isInline: true }, (attachmentResult) => {
            if (attachmentResult.status === Office.AsyncResultStatus.Failed) {
              console.log(`Failed to attach file: ${attachmentResult.error.message}`);
              return;
            }

            Office.context.mailbox.item.body.prependAsync('<img src="cid:sample.png" />', { coercionType: Office.CoercionType.Html }, (prependResult) => {
              if (prependResult.status === Office.AsyncResultStatus.Failed) {
                console.log(`Failed to prepend image to body: ${attachmentResult.error.message}`);
                return;
              }

              console.log("Inline Base64-encoded image added to the beginning of the body.");
            })
          });
        }

        function appendImage() {
          // Get the current body of the message or appointment.
          Office.context.mailbox.item.body.getAsync(Office.CoercionType.Html, (bodyResult) => {
            if (bodyResult.status === Office.AsyncResultStatus.Failed) {
              console.log(`Failed to get body: ${bodyResult.error.message}`);
              return;
            }

            // Add the Base64-encoded image to the end of the body.
            const options = { isInline: true, asyncContext: bodyResult.value };
            Office.context.mailbox.item.addFileAttachmentFromBase64Async(base64String, "sample.png", options, (attachResult) => {
              if (attachResult.status === Office.AsyncResultStatus.Failed) {
                console.log(`Failed to attach file: ${attachResult.error.message}`);
                return;
              }

              let body = attachResult.asyncContext;
              body += '<img src="cid:sample.png" />';

              Office.context.mailbox.item.body.setAsync(body, { coercionType: Office.CoercionType.Html }, (setResult) => {
                if (setResult.status === Office.AsyncResultStatus.Failed) {
                  console.log(`Failed to set body: ${setResult.error.message}`);
                  return;
                }
                
                console.log("Inline Base64-encoded image added to the end of the body.");
              });
            });
          });
        }
    language: typescript
template:
    content: |-
        <section>
          <p>This sample adds an inline Base64-encoded image to the body of the message or appointment being composed.</p>
          <p><b>Required mode</b>: Compose</p>
        </section>
        <section>
          <h3>Try it out</h3>
          <button id="prepend-image">Prepend image to body</button>
          <button id="append-image">Append image to body</button>
        </section>
    language: html
style:
    content: |-
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            font-size: 14px;
            line-height: 1.5;
            padding: 10px;
        }

        section {
            margin-bottom: 20px;
        }

        h3 {
            margin-top: 0;
            margin-bottom: 10px;
            font-size: 16px;
        }

        p {
            margin: 0 0 10px 0;
        }

        button {
            background-color: #f0f0f0;
            color: #333333;
            border: 1px solid #8a8a8a;
            padding: 8px 16px;
            font-size: 14px;
            cursor: pointer;
            border-radius: 2px;
            margin-left: 20px;
            margin-bottom: 5px;
            min-width: 80px;
            display: block;
        }

        button:hover {
            background-color: #e0e0e0;
        }

        button:active {
            background-color: #d0d0d0;
        }

        input {
            padding: 8px;
            margin: 5px 0;
            border: 1px solid #ccc;
            border-radius: 2px;
            font-size: 14px;
        }

        .header {
            text-align: center;
            background-color: #f3f2f1;
            padding: 10px;
        }
    language: css
libraries: |-
    https://appsforoffice.microsoft.com/lib/1/hosted/office.js
    https://raw.githubusercontent.com/DefinitelyTyped/DefinitelyTyped/master/types/office-js/index.d.ts