fix: Merge zac/luke

src/ui/hooks/useCommandHistory.ts

@@ -0,0 +1,147 @@
+import { useState, useEffect, useCallback, useRef } from "react";
+import { getCommandHistory, saveCommandToHistory } from "@/ui/main-axios.ts";
+
+interface UseCommandHistoryOptions {
+  hostId?: number;
+  enabled?: boolean;
+}
+
+interface CommandHistoryResult {
+  suggestions: string[];
+  getSuggestions: (input: string) => string[];
+  saveCommand: (command: string) => Promise<void>;
+  clearSuggestions: () => void;
+  isLoading: boolean;
+}
+
+/**
+ * Custom hook for managing command history and autocomplete suggestions
+ */
+export function useCommandHistory({
+  hostId,
+  enabled = true,
+}: UseCommandHistoryOptions): CommandHistoryResult {
+  const [commandHistory, setCommandHistory] = useState<string[]>([]);
+  const [suggestions, setSuggestions] = useState<string[]>([]);
+  const [isLoading, setIsLoading] = useState(false);
+  const historyCache = useRef<Map<number, string[]>>(new Map());
+
+  // Fetch command history when hostId changes
+  useEffect(() => {
+    if (!enabled || !hostId) {
+      setCommandHistory([]);
+      setSuggestions([]);
+      return;
+    }
+
+    // Check cache first
+    const cached = historyCache.current.get(hostId);
+    if (cached) {
+      setCommandHistory(cached);
+      return;
+    }
+
+    // Fetch from server
+    const fetchHistory = async () => {
+      setIsLoading(true);
+      try {
+        const history = await getCommandHistory(hostId);
+        setCommandHistory(history);
+        historyCache.current.set(hostId, history);
+      } catch (error) {
+        console.error("Failed to fetch command history:", error);
+        setCommandHistory([]);
+      } finally {
+        setIsLoading(false);
+      }
+    };
+
+    fetchHistory();
+  }, [hostId, enabled]);
+
+  /**
+   * Get command suggestions based on current input
+   */
+  const getSuggestions = useCallback(
+    (input: string): string[] => {
+      if (!input || input.trim().length === 0) {
+        return [];
+      }
+
+      const trimmedInput = input.trim();
+      const matches = commandHistory.filter((cmd) =>
+        cmd.startsWith(trimmedInput),
+      );
+
+      // Return up to 10 suggestions, excluding exact matches
+      const filtered = matches
+        .filter((cmd) => cmd !== trimmedInput)
+        .slice(0, 10);
+
+      setSuggestions(filtered);
+      return filtered;
+    },
+    [commandHistory],
+  );
+
+  /**
+   * Save a command to history
+   */
+  const saveCommand = useCallback(
+    async (command: string) => {
+      if (!enabled || !hostId || !command || command.trim().length === 0) {
+        return;
+      }
+
+      const trimmedCommand = command.trim();
+
+      // Skip if it's the same as the last command
+      if (commandHistory.length > 0 && commandHistory[0] === trimmedCommand) {
+        return;
+      }
+
+      try {
+        // Save to server
+        await saveCommandToHistory(hostId, trimmedCommand);
+
+        // Update local state - add to beginning
+        setCommandHistory((prev) => {
+          const newHistory = [
+            trimmedCommand,
+            ...prev.filter((c) => c !== trimmedCommand),
+          ];
+          // Keep max 500 commands in memory
+          const limited = newHistory.slice(0, 500);
+          historyCache.current.set(hostId, limited);
+          return limited;
+        });
+      } catch (error) {
+        console.error("Failed to save command to history:", error);
+        // Still update local state even if server save fails
+        setCommandHistory((prev) => {
+          const newHistory = [
+            trimmedCommand,
+            ...prev.filter((c) => c !== trimmedCommand),
+          ];
+          return newHistory.slice(0, 500);
+        });
+      }
+    },
+    [enabled, hostId, commandHistory],
+  );
+
+  /**
+   * Clear current suggestions
+   */
+  const clearSuggestions = useCallback(() => {
+    setSuggestions([]);
+  }, []);
+
+  return {
+    suggestions,
+    getSuggestions,
+    saveCommand,
+    clearSuggestions,
+    isLoading,
+  };
+}