Dialogflow CX Messenger fulfillment

{
  "richContent": [
    [
      {
        "type": "type-id",
        ...
      },
      {
        "type": "type-id",
        ...
      }
    ],
    [
      {
        "type": "type-id",
        ...
      },
      {
        "type": "type-id",
        ...
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "info",
        "title": "Info item title",
        "subtitle": "Info item subtitle",
        "image": {
          "rawUrl": "https://example.com/images/logo.png"
        },
        "anchor": {
          "href": "https://example.com"
        }
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "description",
        "title": "Description title",
        "text": [
          "This is text line 1.",
          "This is text line 2."
        ]
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "image",
        "rawUrl": "https://example.com/images/logo.png",
        "accessibilityText": "Example logo",
        "reference": {
          "text": "Logo",
          "anchor": {
            "href": "https://example.com/images/logo.png"
          },
          "image": {
            "rawUrl": "https://example.com/images/logo_small.png"
          }
        }
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "video",
        "source": {
          "type": "link",
          "anchor": {
            "href": "https://www.youtube.com/watch?v=example"
          }
        }
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "button",
        "icon": {
          "type": "chevron_right",
          "color": "#FF9800"
        },
        "mode": "blocking",
        "text": "Button text",
        "anchor": {
          "href": "https://example.com"
        },
        "event": {
          "event": ""
        }
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "list",
        "title": "List item 1 title",
        "subtitle": "List item 1 subtitle",
        "event": {
          "event": ""
        }
      },
      {
        "type": "list",
        "title": "List item 2 title",
        "subtitle": "List item 2 subtitle",
        "event": {
          "event": ""
        }
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "accordion",
        "title": "Accordion title",
        "subtitle": "Accordion subtitle",
        "image": {
          "rawUrl": "https://example.com/images/logo.png"
        },
        "text": "Accordion text"
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "chips",
        "options": [
          {
            "mode": "blocking",
            "text": "Chip 1",
            "image": {
              "rawUrl": "https://example.com/images/logo.png"
            },
            "anchor": {
              "href": "https://example.com"
            }
          },
          {
            "text": "Chip 2",
            "image": {
              "rawUrl": "https://example.com/images/logo.png"
            },
            "anchor": {
              "href": "https://example.com"
            }
          }
        ]
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "match_citations",
        "citations": [
          {
            "title": "Source 1",
            "subtitle": "",
            "anchor": {
              "href": "https://example.com/1"
            }
          },
          {
            "title": "Source 2",
            "subtitle": "",
            "anchor": {
              "href": "https://example.com/2"
            }
          }
        ]
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "files",
        "files": [
          {
            "name": "instructions.pdf",
            "image": {
              "rawUrl":
                  "https://fonts.gstatic.com/s/i/short-term/release/googlesymbols/cloud_download/default/24px.svg"
            },
            "anchor": {
              "href": "https://example.com/instructions.pdf"
            }
          },
          {
            "name": "data.csv",
            "image": {
              "rawUrl":
                  "https://fonts.gstatic.com/s/i/short-term/release/googlesymbols/csv/default/24px.svg"
            },
            "anchor": {
              "href": "https://example.com/data.csv"
            }
          }
        ]
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "html",
        "html": "<b>Bold text</b> <i>Italic text</i> <u>Underlined text</u>"
      }
    ]
  ]
}

{
  "richContent": [
    [
      {
        "type": "custom_template",
        "name": "custom-element-example",
        "payload": {
          "text": "Hello World"
        }
      }
    ]
  ]
}

class CustomElementExample extends HTMLElement {
  constructor() {
    super();
    // The `dfPayload` field will be provided before `connectedCallback` is
    // being called.
    this.dfPayload = null;
    // The `dfResponseId` field will be provided before `connectedCallback` is
    // being called.
    this.dfResponseId = null;
    // It is not strictly required but recommended to contain the custom
    // element in a shadow root.
    // https://developer.mozilla.org/en-US/docs/Web/API/ShadowRoot
    this.renderRoot = this.attachShadow({mode: 'open'});
  }

  /** Web component Lifecycle method. */
  connectedCallback() {
    const div = document.createElement('div');

    // The `.text` must match the payload's structure in `richContent.payload`.
    div.innerText = this.dfPayload.text;

    this.renderRoot.appendChild(div);
  }
}

(function() {
  // Registers the element. This name must match the name in
  // `richContent.payload`.
  customElements.define('custom-element-example', CustomElementExample);
})();

{
  "richContent": [
    [
      {
        "type": "image",
        "rawUrl": "https://example.com/images/logo.png",
        "accessibilityText": "Dialogflow CX across platforms"
      },
      {
        "type": "info",
        "title": "Dialogflow CX",
        "subtitle": "Build natural and rich conversational experiences",
        "anchor": {
          "href": "https://cloud.google.com/dialogflow/docs"
        }
      },
      {
        "type": "chips",
        "options": [
          {
            "text": "Case Studies",
            "anchor": {
              "href": "https://cloud.google.com/dialogflow/case-studies"
            }
          },
          {
            "text": "Docs",
            "anchor": {
              "href": "https://cloud.google.com/dialogflow/docs"
            }
          }
        ]
      }
    ]
  ]
}

properties: {}
type: object

properties:
  status:
    type: string
  reason:
    type: string
type: object

-  Greet  the  user
-  Ask  the  user  what  their  favorite  color  is.
   At  the  same  time  run  ${TOOL:  addRichContent}  to  display  buttons
   for  blue,  red,  yellow,  and  green.
-  Thank  the  user

const dfMessenger = document.querySelector('df-messenger');

function  addRichContent(customPayload)  {
  dfMessenger.renderCustomCard(customPayload.richContent);

  // add error handling

  return  Promise.resolve({  status:  "OK",  reason:  null  });
}

// substitute your own tool id

const  toolId  =  'projects/PROJECT_ID/locations/LOCATION/agents/AGENT_ID/tools/TOOL_ID'
dfMessenger.registerClientSideFunction(toolId,  addRichContent.name,  addRichContent);