botframework-webchat-chat-adapter/index.directline.html at main · microsoft/botframework-webchat-chat-adapter · GitHub

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<!DOCTYPE html>
<html lang="en-US">
  <head>
    <title>Chat Adapter Prototype</title>
    <script src="https://cdn.botframework.com/botframework-webchat/4.8.0/webchat.js"></script>
    <script src="/dist/chat-adapter.js"></script>
    <style type="text/css">
      body,
      html,
      #root {
        height: 100%;
      }

      body {
        background-color: #f7f7f7;
        margin: 0;
      }

      #root {
        box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
        margin: auto;
        min-width: 360px;
        max-width: 720px;
      }
    </style>
  </head>
  <body>
    <div id="root"></div>
    <script>
      function englishToHsilgne(value) {
        return new Promise(resolve => {
          setTimeout(() => {
            resolve(
              value
                .split(' ')
                .reverse()
                // .map(value => value.split('').reverse().join(''))
                .join(' ')
            );
          }, 5000);
        });
      }

      (async function () {
        'use strict';

        const tokenRes = await fetch('https://webchat-mockbot.azurewebsites.net/directline/token', { method: 'POST' });

        if (!tokenRes.ok) {
          throw new Error('Token service is down');
        }

        const { token, userID: userId } = await tokenRes.json();

        const {
          default: createAdapter,
          applyIngressMiddleware,
          applyEgressMiddleware,
          CLOSED,
          compose,
          exportDLJSInterface,
          OPEN
        } = window.ChatAdapter;

        const startConversationRes = await fetch('https://directline.botframework.com/v3/directline/conversations', {
          headers: { accept: 'application/json', authorization: `Bearer ${token}` },
          method: 'POST'
        });

        if (!startConversationRes.ok) {
          return adapter.setReadyState(CLOSED);
        }

        const { conversationId, streamUrl } = await startConversationRes.json();

        // const directLine = window.WebChat.createDirectLine({ token });
        const directLine = createAdapter(
          {},
          compose(
            exportDLJSInterface(),

            // hawo: Egress translation

            // applyEgressMiddleware(() => next => async (activity, options) => {
            //   const hsilgne = await englishToHsilgne(activity.text);

            //   // For DL only
            //   next(
            //     {
            //       ...activity,
            //       channelData: {
            //         ...activity.channelData,
            //         timestamp: activity.timestamp
            //       },
            //       text: hsilgne
            //     },
            //     options
            //   );

            //   // For IC3 only
            //   // next(
            //   //   {
            //   //     ...activity,
            //   //     locale: 'US-en',
            //   //     text: hsilgne
            //   //   },
            //   //   options
            //   // );
            // }),

            // hawo: Ingress translation

            // applyIngressMiddleware(() => next => async activity => {
            //   // For DL only
            //   if (activity.from.role === 'user') {
            //     // This is because DL channel always return server timestamp on read-receipt.
            //     // Also, DL weirdly send bot response as "US-en"
            //     next({ ...activity, timestamp: activity.channelData.timestamp });
            //   } else {
            //     next(activity);

            //     const hsilgne = await englishToHsilgne(activity.text);

            //     next({ ...activity, text: hsilgne });
            //   }

            //   // For IC3 only
            //   // next(activity);

            //   // if (activity.locale === 'en-US') {
            //   //   const hsilgne = await englishToHsilgne(activity.text);

            //   //   next({ ...activity, text: hsilgne });
            //   // }
            // }),

            // ingress middleware
            next => options => {
              const adapter = next(options);

              adapter.setState('directLine.conversationId', conversationId);
              adapter.setState('directLine.streamUrl', streamUrl);

              adapter.subscribe(
                new Observable(subscriber => {
                  const socket = new WebSocket(streamUrl);
                  const handleClose = () => subscriber.complete();
                  const handleMessage = ({ data }) => {
                    if (!data) {
                      return;
                    }

                    const { activities } = JSON.parse(data);

                    activities.forEach(activity => {
                      if (activity.from.id === userId ) {
                        activity = { ...activity, from: { ...activity.from, role: 'user' } };
                      }
                      subscriber.next(activity);
                    });
                  };

                  const handleOpen = () => adapter.setReadyState(OPEN);

                  socket.addEventListener('close', handleClose);
                  socket.addEventListener('message', handleMessage);
                  socket.addEventListener('open', handleOpen);

                  return () => {
                    socket.removeEventListener('close', handleClose);
                    socket.removeEventListener('message', handleMessage);
                    socket.removeEventListener('open', handleOpen);
                    socket.close();
                  };
                })
              );

              return adapter;
            },
            applyEgressMiddleware(({ getState }) => {
              return next => async (activity, options) => {
                const conversationId = getState('directLine.conversationId');

                if (!conversationId) {
                  throw new Error('Cannot egress before the connection is up.');
                }

                const res = await fetch(
                  `https://directline.botframework.com/v3/directline/conversations/${conversationId}/activities`,
                  {
                    body: JSON.stringify(activity),
                    headers: {
                      accept: 'application/json',
                      authorization: `Bearer ${token}`,
                      'content-type': 'application/json'
                    },
                    method: 'POST'
                  }
                );

                if (!res.ok) {
                  throw new Error('Failed to post activity.');
                }

                const { id } = await res.json();
                options.progress && options.progress({ ...activity, id });
              };
            })
          )
        );

        const store = window.WebChat.createStore({}, () => next => action => next(action));

        window.WebChat.renderWebChat(
          {
            directLine,
            store
          },
          document.getElementById('root')
        );

        window.directLine = directLine;
        window.store = store;
      })();
    </script>
  </body>
</html>