fix web chat features

web/app/chat/page.js

@@ -20,12 +20,17 @@ function ChatPage() {
   const [sending, setSending] = useState(false);
   const [loadingConv, setLoadingConv] = useState(true);
   const [error, setError] = useState(null);
+  const [conversations, setConversations] = useState([]);
+  const [convsLoading, setConvsLoading] = useState(false);
+  const [showSidebar, setShowSidebar] = useState(false);
+  const [selectedFile, setSelectedFile] = useState(null);
 
   const messagesEndRef = useRef(null);
   const messagesAreaRef = useRef(null);
   const inputRef = useRef(null);
   const pollRef = useRef(null);
   const lastMessageIdRef = useRef(null);
+  const fileInputRef = useRef(null);
 
   useEffect(() => {
     if (!authLoading && !user) {
@@ -88,6 +93,23 @@ function ChatPage() {
     }
   }, [token]);
 
+  const fetchConversations = useCallback(async () => {
+    if (!token) return;
+    setConvsLoading(true);
+    try {
+      const res = await fetch(`${API_BASE}/api/v1/chat/conversations`, {
+        headers: { Authorization: `Bearer ${token}` },
+      });
+      if (!res.ok) return;
+      const data = await res.json();
+      setConversations(Array.isArray(data) ? data : (data.content ?? []));
+    } catch {
+      // silent
+    } finally {
+      setConvsLoading(false);
+    }
+  }, [token]);
+
   const startPolling = useCallback((convId) => {
     if (pollRef.current) clearInterval(pollRef.current);
     pollRef.current = setInterval(async () => {
@@ -168,11 +190,22 @@ function ChatPage() {
     };
   }, [token, authLoading, conversationIdParam, fetchConversation, fetchMessages, startPolling]);
 
+  useEffect(() => {
+    if (showSidebar && token) fetchConversations();
+  }, [showSidebar, token, fetchConversations]);
+
   async function handleSend(e) {
     e?.preventDefault();
     const text = input.trim();
-    if (!text || sending || !conversation) return;
+    if ((!text && !selectedFile) || sending || !conversation) return;
+    if (selectedFile) {
+      await handleSendAttachment(text);
+    } else {
+      await handleSendText(text);
+    }
+  }
 
+  async function handleSendText(text) {
     setInput("");
     setSending(true);
     setError(null);
@@ -214,6 +247,59 @@ function ChatPage() {
     }
   }
 
+  async function handleSendAttachment(optionalText) {
+    setSending(true);
+    setError(null);
+    const file = selectedFile;
+    setSelectedFile(null);
+    setInput("");
+
+    try {
+      const formData = new FormData();
+      formData.append("file", file);
+      if (optionalText) formData.append("content", optionalText);
+
+      const res = await fetch(
+        `${API_BASE}/api/v1/chat/conversations/${conversation.id}/attachments`,
+        {
+          method: "POST",
+          headers: { Authorization: `Bearer ${token}` },
+          body: formData,
+        }
+      );
+
+      if (res.status === 401) {
+        router.push("/login?next=" + encodeURIComponent("/chat"));
+        return;
+      }
+
+      if (!res.ok) {
+        const data = await res.json().catch(() => null);
+        setError(data?.message || "Failed to send attachment.");
+        setSelectedFile(file);
+        setInput(optionalText);
+        return;
+      }
+
+      const msg = await res.json();
+      setMessages((prev) => prev.some((m) => m.id === msg.id) ? prev : [...prev, msg]);
+      lastMessageIdRef.current = msg.id;
+    } catch {
+      setError("Network error. Please try again.");
+      setSelectedFile(file);
+      setInput(optionalText);
+    } finally {
+      setSending(false);
+      inputRef.current?.focus();
+    }
+  }
+
+  function handleFileChange(e) {
+    const file = e.target.files?.[0];
+    if (file) setSelectedFile(file);
+    e.target.value = "";
+  }
+
   function handleKeyDown(e) {
     if (e.key === "Enter" && !e.shiftKey) {
       e.preventDefault();
@@ -258,6 +344,19 @@ function ChatPage() {
     }
   }
 
+  async function switchConversation(convId) {
+    if (pollRef.current) clearInterval(pollRef.current);
+    setMessages([]);
+    setError(null);
+    setLoadingConv(true);
+    await fetchConversation(convId);
+    await fetchMessages(convId);
+    setLoadingConv(false);
+    startPolling(convId);
+    router.replace(`/chat?id=${convId}`, { scroll: false });
+    setShowSidebar(false);
+  }
+
   if (authLoading || loadingConv) {
     return (
       <main style={s.page}>
@@ -292,6 +391,43 @@ function ChatPage() {
       </section>
 
       <section style={s.chatSection}>
+        <div style={{ display: "flex", gap: "1rem", alignItems: "flex-start" }}>
+        {showSidebar && (
+          <div style={s.sidebar}>
+            <div style={s.sidebarHeader}>
+              <span style={s.sidebarTitle}>All Conversations</span>
+              <button style={s.sidebarClose} onClick={() => setShowSidebar(false)}>✕</button>
+            </div>
+            {convsLoading && <p style={s.sidebarEmpty}>Loading...</p>}
+            {!convsLoading && conversations.length === 0 && (
+              <p style={s.sidebarEmpty}>No conversations yet.</p>
+            )}
+            <div style={{ overflowY: "auto", flex: 1 }}>
+              {conversations.map((conv) => (
+                <button
+                  key={conv.id}
+                  style={{ ...s.convItem, ...(conv.id === conversation?.id ? s.convItemActive : {}) }}
+                  onClick={() => switchConversation(conv.id)}
+                >
+                  <div style={s.convItemTop}>
+                    <span style={s.convItemSubject}>{conv.subject || `Conversation #${conv.id}`}</span>
+                    <span style={{ ...s.convStatusBadge, ...(conv.status === "OPEN" ? s.convStatusOpen : s.convStatusClosed) }}>
+                      {conv.status}
+                    </span>
+                  </div>
+                  <div style={s.convItemBottom}>
+                    <span style={s.convItemMode}>{conv.mode === "HUMAN" ? "👤 Live" : "🤖 AI"}</span>
+                    <span style={s.convItemDate}>{conv.createdAt ? new Date(conv.createdAt).toLocaleDateString() : ""}</span>
+                  </div>
+                </button>
+              ))}
+            </div>
+            <button style={s.newConvSidebarBtn} onClick={() => { setShowSidebar(false); handleNewConversation(); }}>
+              + New Conversation
+            </button>
+          </div>
+        )}
+        <div style={{ flex: 1, minWidth: 0 }}>
         {!conversation ? (
           <div style={s.noConvCard}>
             <div style={s.noConvIcon}>💬</div>
@@ -301,6 +437,9 @@ function ChatPage() {
             <button style={s.startBtn} onClick={handleNewConversation}>
               Start a Conversation
             </button>
+            <button style={s.backBtn} onClick={() => setShowSidebar(true)}>
+              View Past Conversations
+            </button>
             <button style={s.backBtn} onClick={() => router.push("/ai-chat")}>
               Back to AI Assistant
             </button>
@@ -320,13 +459,21 @@ function ChatPage() {
                   </div>
                 </div>
               </div>
-              <button
-                style={s.aiBtn}
-                onClick={() => router.push("/ai-chat")}
-                title="Back to AI Assistant"
-              >
-                AI Assistant
-              </button>
+              <div style={{ display: "flex", gap: "0.5rem" }}>
+                <button
+                  style={{ ...s.historyBtn, ...(showSidebar ? s.historyBtnActive : {}) }}
+                  onClick={() => setShowSidebar((v) => !v)}
+                >
+                  History
+                </button>
+                <button
+                  style={s.aiBtn}
+                  onClick={() => router.push("/ai-chat")}
+                  title="Back to AI Assistant"
+                >
+                  AI Assistant
+                </button>
+              </div>
             </div>
 
             {!hasStaff && !hasStaffMessage && !isClosed && (
@@ -413,31 +560,62 @@ function ChatPage() {
               </div>
             ) : (
               <form style={s.inputArea} onSubmit={handleSend}>
-                <textarea
-                  ref={inputRef}
-                  style={s.textarea}
-                  value={input}
-                  onChange={(e) => setInput(e.target.value)}
-                  onKeyDown={handleKeyDown}
-                  placeholder="Type a message..."
-                  rows={1}
-                  disabled={sending}
-                  maxLength={2000}
+                <input
+                  type="file"
+                  ref={fileInputRef}
+                  style={{ display: "none" }}
+                  onChange={handleFileChange}
                 />
-                <button
-                  type="submit"
-                  style={{
-                    ...s.sendBtn,
-                    ...((!input.trim() || sending) ? s.sendBtnDisabled : {}),
-                  }}
-                  disabled={!input.trim() || sending}
-                >
-                  {sending ? "..." : "Send"}
-                </button>
+                {selectedFile && (
+                  <div style={s.filePreview}>
+                    <span style={s.filePreviewName}>📎 {selectedFile.name}</span>
+                    <button
+                      type="button"
+                      style={s.filePreviewRemove}
+                      onClick={() => setSelectedFile(null)}
+                    >
+                      ✕
+                    </button>
+                  </div>
+                )}
+                <div style={s.inputRow}>
+                  <button
+                    type="button"
+                    style={s.attachBtn}
+                    onClick={() => fileInputRef.current?.click()}
+                    disabled={sending}
+                    title="Attach a file"
+                  >
+                    📎
+                  </button>
+                  <textarea
+                    ref={inputRef}
+                    style={s.textarea}
+                    value={input}
+                    onChange={(e) => setInput(e.target.value)}
+                    onKeyDown={handleKeyDown}
+                    placeholder={selectedFile ? "Add a caption (optional)..." : "Type a message..."}
+                    rows={1}
+                    disabled={sending}
+                    maxLength={2000}
+                  />
+                  <button
+                    type="submit"
+                    style={{
+                      ...s.sendBtn,
+                      ...((!input.trim() && !selectedFile) || sending ? s.sendBtnDisabled : {}),
+                    }}
+                    disabled={(!input.trim() && !selectedFile) || sending}
+                  >
+                    {sending ? "..." : "Send"}
+                  </button>
+                </div>
               </form>
             )}
           </div>
         )}
+        </div>
+        </div>
       </section>
     </main>
   );
@@ -480,7 +658,7 @@ const s = {
     margin: "1rem auto 0",
   },
   chatSection: {
-    maxWidth: 800,
+    maxWidth: 1060,
     margin: "0 auto",
     padding: "1.5rem 1rem 2rem",
   },
@@ -737,11 +915,16 @@ const s = {
   },
   inputArea: {
     display: "flex",
-    gap: "0.6rem",
+    flexDirection: "column",
+    gap: "0.4rem",
     padding: "0.85rem 1.25rem",
     borderTop: "1px solid #f0f0f0",
     background: "#fff",
     flexShrink: 0,
+  },
+  inputRow: {
+    display: "flex",
+    gap: "0.6rem",
     alignItems: "flex-end",
   },
   textarea: {
@@ -772,6 +955,155 @@ const s = {
     background: "#aaa",
     cursor: "not-allowed",
   },
+  attachBtn: {
+    background: "none",
+    border: "1.5px solid #e0e0e0",
+    borderRadius: 8,
+    padding: "0.5rem 0.6rem",
+    fontSize: "1rem",
+    cursor: "pointer",
+    flexShrink: 0,
+    color: "#666",
+    lineHeight: 1,
+  },
+  filePreview: {
+    display: "flex",
+    alignItems: "center",
+    gap: "0.5rem",
+    background: "#f8f8f8",
+    border: "1px solid #e8e8e8",
+    borderRadius: 8,
+    padding: "0.35rem 0.75rem",
+  },
+  filePreviewName: {
+    fontSize: "0.82rem",
+    color: "#555",
+    flex: 1,
+    overflow: "hidden",
+    textOverflow: "ellipsis",
+    whiteSpace: "nowrap",
+  },
+  filePreviewRemove: {
+    background: "none",
+    border: "none",
+    cursor: "pointer",
+    color: "#999",
+    fontSize: "0.8rem",
+    padding: "0 0.15rem",
+    flexShrink: 0,
+  },
+  historyBtn: {
+    background: "white",
+    border: "2px solid #555",
+    color: "#555",
+    borderRadius: 8,
+    padding: "0.45rem 0.9rem",
+    fontSize: "0.82rem",
+    fontWeight: 600,
+    cursor: "pointer",
+    whiteSpace: "nowrap",
+  },
+  historyBtnActive: {
+    background: "#555",
+    color: "white",
+  },
+  sidebar: {
+    width: 230,
+    flexShrink: 0,
+    background: "white",
+    borderRadius: 16,
+    boxShadow: "0 4px 24px rgba(0,0,0,0.08)",
+    display: "flex",
+    flexDirection: "column",
+    overflow: "hidden",
+    maxHeight: "calc(100vh - 220px)",
+    minHeight: 300,
+  },
+  sidebarHeader: {
+    display: "flex",
+    alignItems: "center",
+    justifyContent: "space-between",
+    padding: "0.85rem 1rem",
+    borderBottom: "1px solid #f0f0f0",
+    flexShrink: 0,
+  },
+  sidebarTitle: { fontWeight: 700, fontSize: "0.88rem", color: "#333" },
+  sidebarClose: {
+    background: "none",
+    border: "none",
+    cursor: "pointer",
+    fontSize: "0.85rem",
+    color: "#999",
+    padding: "0.1rem 0.25rem",
+  },
+  sidebarEmpty: {
+    color: "#aaa",
+    fontSize: "0.82rem",
+    padding: "1rem",
+    textAlign: "center",
+    margin: 0,
+  },
+  convItem: {
+    display: "flex",
+    flexDirection: "column",
+    gap: "0.2rem",
+    padding: "0.65rem 1rem",
+    borderBottom: "1px solid #f0f0f0",
+    background: "white",
+    border: "none",
+    borderBottomWidth: 1,
+    borderBottomStyle: "solid",
+    borderBottomColor: "#f0f0f0",
+    textAlign: "left",
+    cursor: "pointer",
+    width: "100%",
+  },
+  convItemActive: { background: "#f8f8f8" },
+  convItemTop: {
+    display: "flex",
+    alignItems: "center",
+    justifyContent: "space-between",
+    gap: "0.4rem",
+  },
+  convItemBottom: {
+    display: "flex",
+    alignItems: "center",
+    justifyContent: "space-between",
+  },
+  convItemSubject: {
+    fontSize: "0.82rem",
+    fontWeight: 600,
+    color: "#222",
+    overflow: "hidden",
+    textOverflow: "ellipsis",
+    whiteSpace: "nowrap",
+    flex: 1,
+  },
+  convItemMode: { fontSize: "0.7rem", color: "#999" },
+  convItemDate: { fontSize: "0.68rem", color: "#bbb" },
+  convStatusBadge: {
+    fontSize: "0.62rem",
+    fontWeight: 700,
+    borderRadius: 20,
+    padding: "0.1rem 0.45rem",
+    flexShrink: 0,
+    textTransform: "uppercase",
+    letterSpacing: "0.04em",
+  },
+  convStatusOpen: { background: "#e6f9ee", color: "#1a7a3c" },
+  convStatusClosed: { background: "#f0f0f0", color: "#888" },
+  newConvSidebarBtn: {
+    margin: "0.65rem 1rem",
+    background: "#333",
+    color: "white",
+    border: "none",
+    borderRadius: 8,
+    padding: "0.5rem 0.75rem",
+    fontSize: "0.8rem",
+    fontWeight: 600,
+    cursor: "pointer",
+    flexShrink: 0,
+  },
 };
 
 export default dynamic(() => Promise.resolve(ChatPage), { ssr: false });