fix: add multi-model support for Factory Droid CLI tool (closes #521) (#618)

src/app/(dashboard)/dashboard/cli-tools/components/DroidToolCard.js

@@ -23,7 +23,8 @@ export default function DroidToolCard({
   const [restoring, setRestoring] = useState(false);
   const [message, setMessage] = useState(null);
   const [selectedApiKey, setSelectedApiKey] = useState("");
-  const [selectedModel, setSelectedModel] = useState("");
+  const [modelList, setModelList] = useState([]);
+  const [modelInput, setModelInput] = useState("");
   const [modalOpen, setModalOpen] = useState(false);
   const [modelAliases, setModelAliases] = useState({});
   const [showManualConfigModal, setShowManualConfigModal] = useState(false);
@@ -32,7 +33,8 @@ export default function DroidToolCard({
 
   const getConfigStatus = () => {
     if (!droidStatus?.installed) return null;
-    const currentConfig = droidStatus.settings?.customModels?.find(m => m.id === "custom:9Router-0");
+    // Check for any 9Router model entry (support multi-model: custom:9Router-0, custom:9Router-1, ...)
+    const currentConfig = droidStatus.settings?.customModels?.find(m => m.id?.startsWith("custom:9Router"));
     if (!currentConfig) return "not_configured";
     const localMatch = currentConfig.baseUrl?.includes("localhost") || currentConfig.baseUrl?.includes("127.0.0.1");
     const cloudMatch = cloudEnabled && CLOUD_URL && currentConfig.baseUrl?.startsWith(CLOUD_URL);
@@ -71,18 +73,25 @@ export default function DroidToolCard({
     }
   };
 
+  // Pre-fill model list from existing config (supports multi-model)
   useEffect(() => {
     if (droidStatus?.installed && !hasInitializedModel.current) {
       hasInitializedModel.current = true;
-      const customModel = droidStatus.settings?.customModels?.find(m => m.id === "custom:9Router-0");
-      if (customModel) {
-        if (customModel.model) setSelectedModel(customModel.model);
-        if (customModel.apiKey && apiKeys?.some(k => k.key === customModel.apiKey)) {
-          setSelectedApiKey(customModel.apiKey);
+      const existingModels = (droidStatus.settings?.customModels || [])
+        .filter(m => m.id?.startsWith("custom:9Router"))
+        .sort((a, b) => (a.index || 0) - (b.index || 0))
+        .map(m => m.model);
+      if (existingModels.length > 0) {
+        setModelList(existingModels);
+      } else {
+        // Legacy: single model stored as custom:9Router-0
+        const legacy = droidStatus.settings?.customModels?.find(m => m.id === "custom:9Router-0");
+        if (legacy?.model) {
+          setModelList([legacy.model]);
         }
       }
     }
-  }, [droidStatus, apiKeys]);
+  }, [droidStatus]);
 
   const checkDroidStatus = async () => {
     setCheckingDroid(true);
@@ -107,21 +116,37 @@ export default function DroidToolCard({
     return url.endsWith("/v1") ? url : `${url}/v1`;
   };
 
+  const addModel = () => {
+    const val = modelInput.trim();
+    if (!val || modelList.includes(val)) return;
+    setModelList((prev) => [...prev, val]);
+    setModelInput("");
+  };
+
+  const removeModel = (id) => setModelList((prev) => prev.filter((m) => m !== id));
+
+  const handleModelSelect = (model) => {
+    if (!model.value || modelList.includes(model.value)) return;
+    setModelList((prev) => [...prev, model.value]);
+    setModalOpen(false);
+  };
+
   const handleApplySettings = async () => {
     setApplying(true);
     setMessage(null);
     try {
-      const keyToUse = selectedApiKey?.trim() 
+      const keyToUse = selectedApiKey?.trim()
         || (apiKeys?.length > 0 ? apiKeys[0].key : null)
         || (!cloudEnabled ? "sk_9router" : null);
 
       const res = await fetch("/api/cli-tools/droid-settings", {
         method: "POST",
         headers: { "Content-Type": "application/json" },
-        body: JSON.stringify({ 
-          baseUrl: getEffectiveBaseUrl(), 
+        body: JSON.stringify({
+          baseUrl: getEffectiveBaseUrl(),
           apiKey: keyToUse,
-          model: selectedModel 
+          models: modelList,
+          activeModel: modelList[0] || "",
         }),
       });
       const data = await res.json();
@@ -146,8 +171,7 @@ export default function DroidToolCard({
       const data = await res.json();
       if (res.ok) {
         setMessage({ type: "success", text: "Settings reset successfully!" });
-        setSelectedModel("");
-        setSelectedApiKey("");
+        setModelList([]);
         checkDroidStatus();
       } else {
         setMessage({ type: "error", text: data.error || "Failed to reset settings" });
@@ -159,35 +183,28 @@ export default function DroidToolCard({
     }
   };
 
-  const handleModelSelect = (model) => {
-    setSelectedModel(model.value);
-    setModalOpen(false);
-  };
-
   const getManualConfigs = () => {
-    const keyToUse = (selectedApiKey && selectedApiKey.trim()) 
-      ? selectedApiKey 
+    const keyToUse = (selectedApiKey && selectedApiKey.trim())
+      ? selectedApiKey
       : (!cloudEnabled ? "sk_9router" : "<API_KEY_FROM_DASHBOARD>");
 
     const settingsContent = {
-      customModels: [
-        {
-          model: selectedModel || "provider/model-id",
-          id: "custom:9Router-0",
-          index: 0,
-          baseUrl: getEffectiveBaseUrl(),
-          apiKey: keyToUse,
-          displayName: selectedModel || "provider/model-id",
-          maxOutputTokens: 131072,
-          noImageSupport: false,
-          provider: "openai",
-        },
-      ],
+      customModels: modelList.map((m, i) => ({
+        model: m,
+        id: `custom:9Router-${i}`,
+        index: i,
+        baseUrl: getEffectiveBaseUrl(),
+        apiKey: keyToUse,
+        displayName: m,
+        maxOutputTokens: 131072,
+        noImageSupport: false,
+        provider: "openai",
+      })),
     };
 
     const platform = typeof navigator !== "undefined" && navigator.platform;
     const isWindows = platform?.toLowerCase().includes("win");
-    const settingsPath = isWindows 
+    const settingsPath = isWindows
       ? "%USERPROFILE%\\.factory\\settings.json"
       : "~/.factory/settings.json";
 
@@ -242,12 +259,12 @@ export default function DroidToolCard({
             <>
               <div className="flex flex-col gap-2">
                 {/* Current Base URL */}
-                {droidStatus?.settings?.customModels?.find(m => m.id === "custom:9Router-0")?.baseUrl && (
+                {droidStatus?.settings?.customModels?.find(m => m.id?.startsWith("custom:9Router"))?.baseUrl && (
                   <div className="flex items-center gap-2">
                     <span className="w-32 shrink-0 text-sm font-semibold text-text-main text-right">Current</span>
                     <span className="material-symbols-outlined text-text-muted text-[14px]">arrow_forward</span>
                     <span className="flex-1 px-2 py-1.5 text-xs text-text-muted truncate">
-                      {droidStatus.settings.customModels.find(m => m.id === "custom:9Router-0").baseUrl}
+                      {droidStatus.settings.customModels.find(m => m.id?.startsWith("custom:9Router")).baseUrl}
                     </span>
                   </div>
                 )}
@@ -256,12 +273,12 @@ export default function DroidToolCard({
                 <div className="flex items-center gap-2">
                   <span className="w-32 shrink-0 text-sm font-semibold text-text-main text-right">Base URL</span>
                   <span className="material-symbols-outlined text-text-muted text-[14px]">arrow_forward</span>
-                  <input 
-                    type="text" 
-                    value={getDisplayUrl()} 
-                    onChange={(e) => setCustomBaseUrl(e.target.value)} 
-                    placeholder="https://.../v1" 
-                    className="flex-1 px-2 py-1.5 bg-surface rounded border border-border text-xs focus:outline-none focus:ring-1 focus:ring-primary/50" 
+                  <input
+                    type="text"
+                    value={getDisplayUrl()}
+                    onChange={(e) => setCustomBaseUrl(e.target.value)}
+                    placeholder="https://.../v1"
+                    className="flex-1 px-2 py-1.5 bg-surface rounded border border-border text-xs focus:outline-none focus:ring-1 focus:ring-primary/50"
                   />
                   {customBaseUrl && customBaseUrl !== baseUrl && (
                     <button onClick={() => setCustomBaseUrl("")} className="p-1 text-text-muted hover:text-primary rounded transition-colors" title="Reset to default">
@@ -285,13 +302,48 @@ export default function DroidToolCard({
                   )}
                 </div>
 
-                {/* Model */}
+                {/* Models */}
                 <div className="flex items-center gap-2">
-                  <span className="w-32 shrink-0 text-sm font-semibold text-text-main text-right">Model</span>
+                  <span className="w-32 shrink-0 text-sm font-semibold text-text-main text-right">
+                    Models {modelList.length > 0 && <span className="text-primary">({modelList.length})</span>}
+                  </span>
                   <span className="material-symbols-outlined text-text-muted text-[14px]">arrow_forward</span>
-                  <input type="text" value={selectedModel} onChange={(e) => setSelectedModel(e.target.value)} placeholder="provider/model-id" className="flex-1 px-2 py-1.5 bg-surface rounded border border-border text-xs focus:outline-none focus:ring-1 focus:ring-primary/50" />
-                  <button onClick={() => setModalOpen(true)} disabled={!hasActiveProviders} className={`px-2 py-1.5 rounded border text-xs transition-colors shrink-0 whitespace-nowrap ${hasActiveProviders ? "bg-surface border-border text-text-main hover:border-primary cursor-pointer" : "opacity-50 cursor-not-allowed border-border"}`}>Select Model</button>
-                  {selectedModel && <button onClick={() => setSelectedModel("")} className="p-1 text-text-muted hover:text-red-500 rounded transition-colors" title="Clear"><span className="material-symbols-outlined text-[14px]">close</span></button>}
+                  <div className="flex-1 flex flex-col gap-1">
+                    {/* Model list */}
+                    {modelList.length > 0 && (
+                      <div className="flex flex-col gap-0.5 mb-1">
+                        {modelList.map((id) => (
+                          <div key={id} className="flex items-center gap-1.5 px-2 py-1 bg-bg-secondary rounded border border-border">
+                            <span className="flex-1 text-xs font-mono truncate">{id}</span>
+                            <button onClick={() => removeModel(id)} className="text-text-muted hover:text-red-500 transition-colors shrink-0" title="Remove">
+                              <span className="material-symbols-outlined text-[12px]">close</span>
+                            </button>
+                          </div>
+                        ))}
+                      </div>
+                    )}
+                    {/* Model input row */}
+                    <div className="flex items-center gap-1.5">
+                      <input
+                        type="text"
+                        value={modelInput}
+                        onChange={(e) => setModelInput(e.target.value)}
+                        onKeyDown={(e) => { if (e.key === "Enter") { e.preventDefault(); addModel(); } }}
+                        placeholder="provider/model-id"
+                        className="flex-1 px-2 py-1.5 bg-surface rounded border border-border text-xs focus:outline-none focus:ring-1 focus:ring-primary/50"
+                      />
+                      <button
+                        onClick={() => setModalOpen(true)}
+                        disabled={!hasActiveProviders}
+                        className={`px-2 py-1.5 rounded border text-xs shrink-0 ${hasActiveProviders ? "bg-surface border-border hover:border-primary cursor-pointer" : "opacity-50 cursor-not-allowed border-border"}`}
+                      >
+                        Select
+                      </button>
+                      <button onClick={addModel} disabled={!modelInput.trim()} className="px-2 py-1.5 rounded border bg-surface border-border hover:border-primary text-xs shrink-0 disabled:opacity-50" title="Add model">
+                        <span className="material-symbols-outlined text-[14px]">add</span>
+                      </button>
+                    </div>
+                  </div>
                 </div>
               </div>
 
@@ -303,7 +355,7 @@ export default function DroidToolCard({
               )}
 
               <div className="flex items-center gap-2">
-                <Button variant="primary" size="sm" onClick={handleApplySettings} disabled={!selectedModel} loading={applying}>
+                <Button variant="primary" size="sm" onClick={handleApplySettings} disabled={modelList.length === 0} loading={applying}>
                   <span className="material-symbols-outlined text-[14px] mr-1">save</span>Apply
                 </Button>
                 <Button variant="outline" size="sm" onClick={handleResetSettings} disabled={!droidStatus?.has9Router} loading={restoring}>
@@ -322,7 +374,7 @@ export default function DroidToolCard({
         isOpen={modalOpen}
         onClose={() => setModalOpen(false)}
         onSelect={handleModelSelect}
-        selectedModel={selectedModel}
+        selectedModel={null}
         activeProviders={activeProviders}
         modelAliases={modelAliases}
         title="Select Model for Factory Droid"
@@ -336,4 +388,4 @@ export default function DroidToolCard({
       />
     </Card>
   );
-}
+}

src/app/api/cli-tools/droid-settings/route.js

@@ -47,7 +47,7 @@ const readSettings = async () => {
 // Check if settings has 9Router customModels
 const has9RouterConfig = (settings) => {
   if (!settings || !settings.customModels) return false;
-  return settings.customModels.some(m => m.id === "custom:9Router-0");
+  return settings.customModels.some(m => m.id?.startsWith("custom:9Router"));
 };
 
 // GET - Check droid CLI and read current settings
@@ -78,12 +78,17 @@ export async function GET() {
 }
 
 // POST - Update 9Router customModels (merge with existing settings)
+// Accepts either `model` (string, legacy single-model) or `models` (array of strings, multi-model)
+// Also accepts `activeModel` to set which model is active/primary
 export async function POST(request) {
   try {
-    const { baseUrl, apiKey, model } = await request.json();
+    const { baseUrl, apiKey, model, models, activeModel } = await request.json();
     
-    if (!baseUrl || !model) {
-      return NextResponse.json({ error: "baseUrl and model are required" }, { status: 400 });
+    // Accept either `models` (array) or `model` (string, legacy)
+    const modelsArray = Array.isArray(models) ? models.slice() : (typeof model === "string" ? [model] : []);
+    
+    if (!baseUrl || modelsArray.length === 0) {
+      return NextResponse.json({ error: "baseUrl and at least one model are required" }, { status: 400 });
     }
 
     const droidDir = getDroidDir();
@@ -104,26 +109,51 @@ export async function POST(request) {
       settings.customModels = [];
     }
 
-    // Remove existing 9Router config if any
-    settings.customModels = settings.customModels.filter(m => m.id !== "custom:9Router-0");
+    // Remove all existing 9Router configs
+    settings.customModels = settings.customModels.filter(m => !m.id?.startsWith("custom:9Router"));
 
     // Normalize baseUrl to ensure /v1 suffix
     const normalizedBaseUrl = baseUrl.endsWith("/v1") ? baseUrl : `${baseUrl}/v1`;
+    const keyToUse = apiKey || "your_api_key";
 
-    // Add new 9Router config
-    const customModel = {
-      model: model,
-      id: "custom:9Router-0",
-      index: 0,
-      baseUrl: normalizedBaseUrl,
-      apiKey: apiKey || "your_api_key",
-      displayName: model,
-      maxOutputTokens: 131072,
-      noImageSupport: false,
-      provider: "openai",
-    };
+    // Determine active model: prefer explicit activeModel, else first of modelsArray
+    // If activeModel is explicitly empty string, no model will be set as default
+    let defaultIndex = 0;
+    if (typeof activeModel === "string") {
+      if (activeModel === "") {
+        defaultIndex = -1; // signal: don't set a default
+      } else {
+        const idx = modelsArray.indexOf(activeModel);
+        defaultIndex = idx >= 0 ? idx : 0;
+      }
+    }
 
-    settings.customModels.unshift(customModel);
+    // Add entries for all requested models
+    // The first one (index 0) will be the default if defaultIndex >= 0
+    for (let i = 0; i < modelsArray.length; i++) {
+      const m = modelsArray[i];
+      if (!m || typeof m !== "string") continue;
+      settings.customModels.push({
+        model: m,
+        id: `custom:9Router-${i}`,
+        index: i,
+        baseUrl: normalizedBaseUrl,
+        apiKey: keyToUse,
+        displayName: m,
+        maxOutputTokens: 131072,
+        noImageSupport: false,
+        provider: "openai",
+      });
+    }
+
+    // Set default model if applicable
+    if (defaultIndex >= 0 && settings.customModels[defaultIndex]) {
+      // Reorder so the default comes first
+      const [defaultEntry] = settings.customModels.splice(defaultIndex, 1);
+      settings.customModels.unshift({ ...defaultEntry, index: 0 });
+      // Re-index the rest
+      settings.customModels.forEach((m, i) => { m.index = i; });
+    }
 
     // Write settings
     await fs.writeFile(settingsPath, JSON.stringify(settings, null, 2));
@@ -161,7 +191,7 @@ export async function DELETE() {
 
     // Remove 9Router customModels
     if (settings.customModels) {
-      settings.customModels = settings.customModels.filter(m => m.id !== "custom:9Router-0");
+      settings.customModels = settings.customModels.filter(m => !m.id?.startsWith("custom:9Router"));
       
       // Remove customModels array if empty
       if (settings.customModels.length === 0) {
@@ -180,4 +210,4 @@ export async function DELETE() {
     console.log("Error resetting droid settings:", error);
     return NextResponse.json({ error: "Failed to reset droid settings" }, { status: 500 });
   }
-}
+}