{% extends 'base.html' %} {% block content %}
<div id="room-container">
  <div id="welcome-modal" class="modal">
    <div class="modal-content">
      <h3>Welcome!</h3>
      <p>
        Your display name for this chat session will be: 
        <span id="displayNameText" style="font-weight:bold;"></span>.
      </p>
      <div class="modal-buttons">
        <button class="modal-btn" id="welcomeOkBtn">OK</button>
      </div>
    </div>
  </div>

  <div id="timer-modal" class="modal">
    <div class="modal-content">
      <h3>Start a Timer</h3>
      <p><strong>Please start a timer for 20 minutes</strong>.  At the 20 minute mark, you may click the button "End Chat Session" to continue with the study.</p>
      <div class="modal-buttons">
        <button class="modal-btn" id="timerOkBtn">I have set a timer for 20 minutes.</button>
      </div>
    </div>
  </div>
  
  <h1 id="home-header">Chat Room</h1>
  <div id="room-subsection">
    <div class="topic-header-row">
      <div class="topic-header-info">
    	<h2 id="room-code-display">Topic: <span class="topic-title">{{ topic_info.title }}</span></h2>
      </div>
      <div class="topic-header-buttons">
        <button id="feedback-btn">Share Feedback and Report Bugs</button>
        <button id="end-exp-btn">End Chat Session</button>
        <button id="abort-exp-btn">Abort Experiment</button>
      </div>
    </div>
    <div id="end-modal" class="modal">
      <div class="modal-content">
    	<h3>Only Exit This Way After 20 Minutes of Participation in the Chatroom.</h3>
    	<p>This signals the end of the chat session of the experiment. You will be redirected to the post-survey.</p>
        <p>This button is only to be used at the end of your 20 minutes of participation in the chatroom. <strong>If you wish to exit the chat before finishing your 20 minutes, use the "Abort Experiment" button instead.</strong></p>
        <div class="modal-buttons">
          <button class="modal-btn" id="endYesBtn">Continue</button>
          <button class="modal-btn" id="endNoBtn">Cancel</button>
        </div>
      </div>
    </div>
    <div id="abort-modal" class="modal">
      <div class="modal-content">
        <h3>Are you sure you want to leave this experiment?</h3>
        <p><strong>If you finished your 20 minutes in the chatroom, do NOT exit via this button. Use the "End Chat Session" button instead.</strong></p>
        <p>By clicking yes, you will exit the experiment <strong>without</strong> completing the final survey.</p>
        <div class="modal-buttons">
          <button class="modal-btn" id="abortYesBtn">End early with code "C9V2XFDU"</button>
          <button class="modal-btn" id="abortNoBtn">Cancel</button>
        </div>
      </div>
    </div>

    <div id="feedback-modal" class="modal">
        <div class="modal-content">
            <h3>Feedback</h3>
            <form id="feedback-form">
                 <div class="feedback-col">
                   <label for="enter-feedback">Tell us if you noticed something confusing, unexpected, or not working.</label>
                    <textarea id="enter-feedback" name="feedback"></textarea>
                  </div>
                  <br>
                  <div class="modal-buttons">
                      <button class="modal-btn" id="submitFeedbackBtn" type="submit">Submit</button>
                      <button type="button" class="modal-btn" id="cancelFeedbackBtn">Cancel</button>
                  </div>
              </form>
          </div>
      </div>

    <div id="feedback-status-confirm" class="modal">
      <div class="modal-content">
        <p>Feedback submitted.</p>
        <div class="modal-buttons">
          <button class="modal-btn" id="cancelFeedbackStatusBtn">Ok</button>
        </div>
      </div>
    </div>
    <div id="feedback-status-fail" class="modal">
      <div class="modal-content">
        <p>Feedback failed to submit.</p>
        <div class="modal-buttons">
          <button class="modal-btn" id="cancelFeedbackStatusBtn2">Ok</button>
        </div>
      </div>
    </div>
  </div>
  <div id="chat-room-widget">
    <div id="msgs-container">
      <ul id="messages"></ul>
    </div>
    <div id="message-box">
      <textarea id="message-input" name="message" placeholder="Enter your message" rows="1"></textarea>
      <button type="submit" id="send-btn" onclick="sendMessage()">Send</button>
    </div>
  </div>
  <script type="text/javascript">
    // Push a state when entering the page
    history.pushState(null, "", location.href);
    window.addEventListener("popstate", function () {
      // Immediately push another state to prevent backward navigation
      history.pushState(null, "", location.href);
    });
    var socketio = io();
    const chatEnded = {{ ended | tojson }};
    const textarea = document.getElementById("message-input");
    if (chatEnded) {
      textarea.disabled = true;
      textarea.placeholder = "The chat has ended.";
      document.getElementById("send-btn").disabled = true;
      document.getElementById("end-exp-btn").disabled = true;
      document.getElementById("abort-exp-btn").disabled = true;
      document.getElementById("feedback-btn").disabled = true; //since without socket io, it won't submit
      if (socketio) {
        socketio.close();
      }
    }
    // Handler for the welcome modal
    let welcomeModal = document.getElementById("welcome-modal");
    let timerModal = document.getElementById("timer-modal");
    const displayNameText = document.getElementById("displayNameText");
    displayNameText.textContent = "{{ user }}";
    // Show the modal instantly when the page loads
    window.onload = function() {
      timerModal.style.display = "block";
    };
    //timer pop-up
    document.getElementById("timerOkBtn").onclick = function () {
      timerModal.style.display = "none";
      welcomeModal.style.display = "block";
    };
    // Close the modal on OK
    document.getElementById("welcomeOkBtn").onclick = function () {
      welcomeModal.style.display = "none";
    };
    // Creates the post-survey link (based on the bot names)
    const endpoint = "{{ url_for('post_survey') }}";
    const endpointQuitEarly = "https://app.prolific.com/submissions/complete?cc=C9V2XFDU";
    socketio.on("message", function (message) { createChatItem(message.message, message.sender) });
    function createChatItem(message, sender) {
      //autoscroll capabilities
      const container = document.getElementById("msgs-container");
      const shouldAutoScroll = isNearBottom(container);

      var messages = document.getElementById("messages");
      var content;
      if (sender === "") {
        content = `<p class="member-activity">${message}</p>`;
      } else {
        var senderIsUser = "{{user}}" === sender;
        content = `
          <li class="message-item ${senderIsUser ? "self-message-item" : "peer-message-item"}">
              <p>${message}</p>
              <small class="${senderIsUser ? "chat-user-sender" : "chat-sender"}">${sender}</small>
         </li>
      `;}
      messages.insertAdjacentHTML("beforeend", content);

      //autoscroll capabilities
      if (shouldAutoScroll) {
        smoothScrollToBottom(container);
      }
    }
    function sendMessage() {
      var msgInput = document.getElementById("message-input");
      if (msgInput.value === "") return;
      var msg = msgInput.value;
      socketio.emit("message", { message: msg });
      msgInput.value = "";
      msgInput.style.height = "auto";  // reset height
    }
    document.getElementById("message-input").addEventListener("keydown", function (event) {
      if (event.key === "Enter") {
        return
      	// disabling send message so user can type a newline without sending
        //event.preventDefault(); // prevent a newline or form submit
        //sendMessage(); // call the same function as the Send button
      }
    });
    textarea.addEventListener("input", () => {
      textarea.style.height = "auto";  // reset height
      textarea.style.overflowY = "hidden";  // start by hiding the scrollbar
      textarea.style.height = (textarea.scrollHeight + 8) + "px";  // set to fit content (+8 for bottom padding)
      // If we've hit the max height, allow scrolling
      if (textarea.scrollHeight > parseInt(getComputedStyle(textarea).maxHeight)) {
        textarea.style.overflowY = "auto";
      }
    });
    // Handler for the Experiment Ends confirmation pop-up
    const endModal = document.getElementById("end-modal");
    document.getElementById("end-exp-btn").onclick = function () {
      endModal.style.display = "block";
    };
    document.getElementById("endNoBtn").onclick = function () {
      endModal.style.display = "none";
    };
    document.getElementById("endYesBtn").onclick = function (e) {
      //block browser confirmation popup
      e.stopPropagation(); 
      // Redirect to ending survey
      window.open(endpoint, "_blank");
      endModal.style.display = "none";
      textarea.disabled = true;
      textarea.placeholder = "The chat has ended.";
      document.getElementById("send-btn").disabled = true;
      document.getElementById("end-exp-btn").disabled = true;
      document.getElementById("abort-exp-btn").disabled = true;
      document.getElementById("feedback-btn").disabled = true; //since without socket io, it won't submit
      if (socketio) {
        socketio.close();
      }
    };
    // Handler for the Abort Experiment confirmation pop-up
    let modal = document.getElementById("abort-modal");
    document.getElementById("abort-exp-btn").onclick = function () {
      modal.style.display = "block";
    };
    document.getElementById("abortNoBtn").onclick = function () {
      modal.style.display = "none";
    };
    
    document.getElementById("abortYesBtn").onclick = function (e) {
      //block browser confirmation popup
      e.stopPropagation(); 
      // Mark that user aborted and redirect to ending survey
      fetch("/abort", { method: "POST" })
        .then(() => {
          window.open(endpointQuitEarly, "_blank");
    	});
      modal.style.display = "none";
      textarea.disabled = true;
      textarea.placeholder = "The chat has ended.";
      document.getElementById("send-btn").disabled = true;
      document.getElementById("end-exp-btn").disabled = true;
      document.getElementById("abort-exp-btn").disabled = true;
      document.getElementById("feedback-btn").disabled = true; //since without socket io, it won't submit
      if (socketio) {
      	socketio.close();
      }
    };

    //handler for feedback modal popup
    let feedbackModal = document.getElementById("feedback-modal");
    let form = document.getElementById("feedback-form");
    let feedbackConfirm = document.getElementById("feedback-status-confirm");
    let feedbackFail = document.getElementById("feedback-status-fail");
    document.getElementById("feedback-btn").onclick = function () {
      feedbackModal.style.display = "block";
    };
    document.getElementById("cancelFeedbackBtn").onclick = function () {
      feedbackModal.style.display = "none";
    };

    document.getElementById("cancelFeedbackStatusBtn").onclick = function () {
      feedbackConfirm.style.display = "none";
      feedbackFail.style.display = "none";
    };
    
    document.getElementById("cancelFeedbackStatusBtn2").onclick = function () {
      feedbackConfirm.style.display = "none";
      feedbackFail.style.display = "none";
    };

    //override form function to instead emit save feedback event
    form.addEventListener("submit", function (e) {
        e.preventDefault();

        const data = new FormData(form);
        const feedback = data.get("feedback")?.trim();

        if (!feedback) return;
      
        socketio.emit("feedback_given", { feedback }, (response) => {
          if (response?.status === "True" || response?.status === true) {
            feedbackConfirm.style.display = "block";
            form.reset();
            document.getElementById("feedback-modal").style.display = "none";
          } else {
            feedbackFail.style.display = "block";
          }
        });
    });
      
    // add auto scroll
    function isNearBottom(container, threshold = 120) {
      const distanceFromBottom = container.scrollHeight - (container.scrollTop + container.clientHeight);
      return distanceFromBottom < threshold;
    }
    function smoothScrollToBottom(container) {
      container.scrollTo({ top: container.scrollHeight, behavior: "smooth" });
    }



  </script>
  <script type="text/javascript">
    const initialMessages = {{ messages | tojson }};
    initialMessages.forEach(msg => {
      createChatItem(msg.message, msg.sender);
    });
  </script>
</div>
{% endblock %}