fix: updated openrouter defaults and settings window

README.md

@@ -87,7 +87,11 @@ Built with Electron, React, TypeScript, and Vite.
 
 ## AI setup
 
-PaperCache uses your own OpenAI API key — no subscription, no middleman. Configure your key, model, and optionally a custom endpoint (works with local LLMs like Ollama) in Settings (`Cmd+K` → Settings).
+PaperCache brings AI right into your note — no subscription, no middleman. You can configure your API key, model, and endpoint in Settings (`Cmd+Shift+S`).
+
+- **OpenAI:** Works out-of-the-box with your OpenAI API key and models like `gpt-4o`.
+- **Free Models (OpenRouter):** Don't have an AI subscription? Get a free key at [OpenRouter](https://openrouter.ai/keys), set your Base URL to `https://openrouter.ai/api/v1`, and try a powerful free model like `nvidia/nemotron-3-super-120b-a12b:free`.
+- **Local LLMs:** Works seamlessly with local models like Ollama by pointing the Base URL to your local instance.
 
 ---
 

electron/main.ts

@@ -571,9 +571,16 @@ ipcMain.on('open-settings', () => {
     return
   }
 
+  let bounds: any = { width: 900, height: 700 }
+  if (win && !win.isDestroyed()) {
+    bounds = win.getBounds()
+  }
+
   settingsWin = new BrowserWindow({
-    width: 900,
-    height: 700,
+    width: bounds.width,
+    height: bounds.height,
+    x: bounds.x,
+    y: bounds.y,
     titleBarStyle: 'hiddenInset',
     icon: path.join(__dirname, '../public/icon.png'),
     webPreferences: {
@@ -592,6 +599,9 @@ ipcMain.on('open-settings', () => {
 
   settingsWin.on('closed', () => {
     settingsWin = null
+    if (win && !win.isDestroyed()) {
+      win.show()
+    }
   })
 })
 

fix_ts.py

@@ -0,0 +1,70 @@
+import os
+
+def fix_file(filepath, replacements):
+    with open(filepath, "r") as f:
+        code = f.read()
+    for old, new in replacements:
+        code = code.replace(old, new)
+    with open(filepath, "w") as f:
+        f.write(code)
+
+fix_file("src/hooks/useNoteStorage.ts", [
+    ("import { Note } from '../store/useAppStore'", "import type { Note } from '../store/useAppStore'"),
+    ("note.content", "note?.content || ''")
+])
+
+fix_file("src/hooks/useReminders.ts", [
+    ("body: label,", "body: label || '',")
+])
+
+fix_file("src/hooks/useVariables.ts", [
+    ("const name = varMatch[1]", "const name = varMatch[1]!"),
+    ("globals[name] = mathjs.evaluate(varMatch[2]", "globals[name] = mathjs.evaluate(varMatch[2]!"),
+    ("globals[name] = varMatch[2].trim()", "globals[name] = varMatch[2]!.trim()")
+])
+
+fix_file("src/lib/editor/plugins.ts", [
+    ("const name = match[1]", "const name = match[1]!"),
+    ("mathjs.evaluate(match[2]", "mathjs.evaluate(match[2]!"),
+    ("scope[name] = match[2].trim()", "scope[name] = match[2]!.trim()"),
+    ("const targetStr = match[4]", "const targetStr = match[4] || ''"),
+    ("const targetMs = new Date(targetStr).getTime()", "const targetMs = targetStr ? new Date(targetStr).getTime() : 0"),
+    ("const label = match[3]", "const label = match[3] || ''"),
+    ("const exprPart = calcMatch[1]", "const exprPart = calcMatch[1]!"),
+    ("const oldResult = calcMatch[2]", "const oldResult = calcMatch[2]!"),
+    ("console.log(e)", ""),
+    ("const url = match[1]", "const url = match[1]!"),
+    ("const path = match[1]", "const path = match[1]!"),
+    ("const isDone = match[1] ===", "const isDone = match[1]! ==="),
+    ("text.slice(match.index + 2, match.index + match[0].length - 2)", "text.slice(match.index + 2, match.index + match[0]!.length - 2)")
+])
+
+fix_file("src/utils.ts", [
+    ("const lastPart = parts.pop()", "const lastPart = parts.pop() || ''"),
+    ("parts.length > 0", "parts && parts.length > 0")
+])
+
+fix_file("src/utils.test.ts", [
+    ("const lastPart = parts.pop()", "const lastPart = parts.pop() || ''")
+])
+
+fix_file("src/App.tsx", [
+    ("const name = match[1]", "const name = match[1]!"),
+    ("mathjs.evaluate(match[2]", "mathjs.evaluate(match[2]!"),
+    ("scope[name] = match[2].trim()", "scope[name] = match[2]!.trim()"),
+    ("const exprPart = calcMatch[1]", "const exprPart = calcMatch[1]!"),
+    ("const oldResult = calcMatch[2]", "const oldResult = calcMatch[2]!"),
+    ("const filename = note.id.replace", "const filename = note?.id.replace"),
+    ("note.content.split", "note?.content.split"),
+    ("selNote.id", "selNote?.id"),
+    ("selNote.content", "selNote?.content")
+])
+
+fix_file("src/components/RemindersPage.tsx", [
+    ("const label = match[3]", "const label = match[3] || ''")
+])
+
+fix_file("src/GraphView.tsx", [
+    ("targetId: match[1]", "targetId: match[1]!")
+])
+

src/App.css

@@ -704,3 +704,21 @@ body {
 .cm-overdue-line-text {
   color: #ff3b30 !important;
 }
+
+.cm-ctx-pill {
+  display: inline-block;
+  padding: 0 6px;
+  border-radius: 4px;
+  background-color: rgba(139, 92, 246, 0.15);
+  color: #8b5cf6;
+  font-size: 0.9em;
+  font-weight: bold;
+  border: 1px solid rgba(139, 92, 246, 0.3);
+  margin-right: 6px;
+  vertical-align: middle;
+}
+
+.cm-ctx-highlight {
+  color: #8b5cf6;
+  background-color: rgba(139, 92, 246, 0.1);
+}

src/App.tsx

@@ -90,7 +90,7 @@
     fetchApiKey()
   }, [setApiKey])
 
   const editorRef = useRef<any>(null)
   const searchInputRef = useRef<HTMLInputElement>(null)
 
   useEffect(() => {}, [notes])
@@ -130,8 +130,10 @@
       })
       // Refresh AI Store (API Key handled securely, we don't listen to localStorage for it directly)
       useAIStore.setState({
-        apiBaseUrl: localStorage.getItem('papercache-api-base-url') || 'https://api.openai.com/v1',
-        apiModel: localStorage.getItem('papercache-api-model') || 'gpt-4o',
+        apiBaseUrl:
+          localStorage.getItem('papercache-api-base-url') || 'https://openrouter.ai/api/v1',
+        apiModel:
+          localStorage.getItem('papercache-api-model') || 'nvidia/nemotron-3-super-120b-a12b:free',
         aiSystemPrompt:
           localStorage.getItem('papercache-ai-system-prompt') ||
           'You are a helpful assistant directly inside a markdown note. You can format your responses with markdown.',
@@ -173,7 +175,7 @@
   }
 
   const handleEditorChange = useCallback(
     (val: string, viewUpdate: any) => {
       const updatedNotes = [...notes]
       if (updatedNotes[currentNoteIndex]) {
         updatedNotes[currentNoteIndex].content = val
@@ -181,7 +183,7 @@
         window.electronAPI.saveNote(activeNote.id, val)
       }
 
       if (viewUpdate.transactions?.some((tr: any) => tr.docChanged)) {
         let docStr = viewUpdate.state.doc.toString()
         const head = viewUpdate.state.selection.main.head
         const line = viewUpdate.state.doc.lineAt(head)
@@ -189,7 +191,7 @@
         let modified = false
 
         // Build variable scope (incorporate global variables)
         const scope: any = Object.assign({}, (window as any).__globalVariables || {})
         const reVar = /^\/var\s+([a-zA-Z0-9_]+)\s*=\s*(.*)$/gm
         let match
         while ((match = reVar.exec(docStr)) !== null) {
@@ -214,7 +216,7 @@
               docStr = before + newLineText + after
               modified = true
             }
           } catch {}
         }
 
         // Re-evaluate ALL existing calculations in the document
@@ -238,7 +240,7 @@
                 calcModified = true
                 continue
               }
             } catch {}
           }
         }
 
@@ -258,7 +260,7 @@
     [notes, currentNoteIndex, activeNote.id, setNotes]
   )
 
   const containerStyle: any = {
     '--font-family': fontFamily,
     '--text-color': textColor,
     '--custom-color-num': numColor,
@@ -366,8 +368,18 @@
               const line = view.state.doc.lineAt(pos)
               const lineText = line.text.trim()
               const lowerLine = lineText.toLowerCase()
-              if (lowerLine.startsWith('/ai')) {
-                const prompt = lineText.substring(3).trim()
+              if (
+                lowerLine.startsWith('/ai') ||
+                lowerLine.startsWith('/ctx') ||
+                lowerLine.startsWith('/context')
+              ) {
+                const isCtx = lowerLine.startsWith('/ctx') || lowerLine.startsWith('/context')
+                const prefixLength = lowerLine.startsWith('/context')
+                  ? 8
+                  : lowerLine.startsWith('/ctx')
+                    ? 4
+                    : 3
+                const prompt = lineText.substring(prefixLength).trim()
                 if (!apiKey) {
                   const errorText = '\n\u200BError - Set your OpenAI API key in settings\u200C\n'
                   view.dispatch({ changes: { from: line.to, insert: errorText } })
@@ -390,22 +402,48 @@
                     apiKey: apiKey.trim() || 'dummy',
                     baseURL: finalBaseUrl || undefined,
                     dangerouslyAllowBrowser: true,
+                    defaultHeaders: {
+                      'HTTP-Referer': 'https://github.com/papercache/papercache',
+                      'X-Title': 'PaperCache',
+                    },
                   })
 
                   const systemContent = aiSystemPrompt.trim()
                   const messages: any[] = []
                   if (systemContent) {
                     messages.push({ role: 'system', content: systemContent })
                   }
-                  messages.push({ role: 'user', content: prompt })
+
+                  let finalPrompt = prompt
+                  if (isCtx) {
+                    const fullNoteText = view.state.doc.toString()
+                    const MAX_CONTEXT_LENGTH = 50000
+                    let contextText = fullNoteText
+                    if (contextText.length > MAX_CONTEXT_LENGTH) {
+                      contextText =
+                        contextText.substring(0, MAX_CONTEXT_LENGTH) +
+                        '\n...[Context truncated due to length]'
+                    }
+                    finalPrompt = `Context:\n${contextText}\n\nPrompt:\n${prompt}`
+                  }
+
+                  messages.push({ role: 'user', content: finalPrompt })
 
                   openai.chat.completions
                     .create({
-                      model: apiModel.trim() || 'gpt-4o',
+                      model: apiModel.trim() || 'nvidia/nemotron-3-super-120b-a12b:free',
                       messages: messages,
                     })
-                    .then((completion) => {
-                      const response = completion.choices[0].message.content
+                    .then((completion: any) => {
+                      let response: string
+                      if (completion.choices && completion.choices.length > 0) {
+                        response = completion.choices[0].message?.content || ''
+                      } else if (completion.error) {
+                        throw new Error(completion.error.message || 'Unknown API Error')
+                      } else {
+                        throw new Error('Unexpected response format: ' + JSON.stringify(completion))
+                      }
+
                       const docStr = view.state.doc.toString()
                       const finalVal = docStr.replace(
                         '\n\u200B...\u200C\n',

src/Settings.css

@@ -111,16 +111,14 @@ section h3 {
 }
 
 .save-btn {
-  width: 100%;
+  flex: 1;
   padding: 12px;
   background: #fcfcfc;
   color: #000;
   border: none;
   border-radius: 6px;
   font-weight: bold;
   cursor: pointer;
-  margin-top: 10px;
-  margin-bottom: 24px;
 }
 
 .save-btn:hover {
@@ -130,10 +128,12 @@ section h3 {
 .settings-footer {
   margin-top: auto;
   -webkit-app-region: no-drag;
+  display: flex;
+  gap: 10px;
 }
 
 .quit-btn {
-  width: 100%;
+  flex: 1;
   padding: 12px;
   background: #2a2a2a;
   color: #ff4444;
@@ -146,3 +146,18 @@ section h3 {
 .quit-btn:hover {
   background: rgba(255, 68, 68, 0.1);
 }
+
+.close-btn {
+  flex: 1;
+  padding: 12px;
+  background: #2a2a2a;
+  color: #fff;
+  border: 1px solid #666;
+  border-radius: 6px;
+  font-weight: bold;
+  cursor: pointer;
+}
+
+.close-btn:hover {
+  background: #333;
+}

src/Settings.tsx

@@ -1,14 +1,32 @@
-import { useState } from 'react'
+import { useState, useEffect } from 'react'
+import { getSecure, setSecure } from './lib/safeStorage'
 import './Settings.css'
 
 export default function Settings() {
-  const [apiKey, setApiKey] = useState(localStorage.getItem('papercache-apikey') || '')
+  const [apiKey, setApiKey] = useState('')
+
+  useEffect(() => {
+    getSecure('papercache-apikey').then((key) => {
+      if (key) setApiKey(key)
+    })
+
+    const handleKeyDown = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') {
+        window.electronAPI.closeWindow()
+      }
+    }
+    window.addEventListener('keydown', handleKeyDown)
+    return () => window.removeEventListener('keydown', handleKeyDown)
+  }, [])
   const [apiBaseUrl, setApiBaseUrl] = useState(
-    localStorage.getItem('papercache-baseurl') || 'https://api.openai.com/v1'
+    localStorage.getItem('papercache-api-base-url') || 'https://openrouter.ai/api/v1'
+  )
+  const [apiModel, setApiModel] = useState(
+    localStorage.getItem('papercache-api-model') || 'nvidia/nemotron-3-super-120b-a12b:free'
   )
-  const [apiModel, setApiModel] = useState(localStorage.getItem('papercache-model') || 'gpt-4o')
   const [aiSystemPrompt, setAiSystemPrompt] = useState(
-    localStorage.getItem('papercache-system-prompt') || 'Please provide a short and concise answer.'
+    localStorage.getItem('papercache-ai-system-prompt') ||
+      'Please provide a short and concise answer.'
   )
 
   // Shortcuts
@@ -52,11 +70,12 @@ export default function Settings() {
     localStorage.getItem('papercache-color-math') || '#f59e0b'
   )
 
-  const saveSettings = () => {
-    localStorage.setItem('papercache-apikey', apiKey)
-    localStorage.setItem('papercache-baseurl', apiBaseUrl)
-    localStorage.setItem('papercache-model', apiModel)
-    localStorage.setItem('papercache-system-prompt', aiSystemPrompt)
+  const saveSettings = async () => {
+    await setSecure('papercache-apikey', apiKey)
+    localStorage.removeItem('papercache-apikey')
+    localStorage.setItem('papercache-api-base-url', apiBaseUrl)
+    localStorage.setItem('papercache-api-model', apiModel)
+    localStorage.setItem('papercache-ai-system-prompt', aiSystemPrompt)
 
     localStorage.setItem('papercache-font', fontFamily)
     localStorage.setItem('papercache-show-rulings', showRulings.toString())
@@ -98,6 +117,10 @@ export default function Settings() {
     window.electronAPI.closeWindow() // actually closes settings window
   }
 
+  const closeSettings = () => {
+    window.electronAPI.closeWindow()
+  }
+
   const quitApp = () => {
     window.electronAPI.quitApp()
   }
@@ -127,7 +150,7 @@ export default function Settings() {
               type="text"
               value={apiBaseUrl}
               onChange={(e) => setApiBaseUrl(e.target.value)}
-              placeholder="https://api.openai.com/v1"
+              placeholder="https://openrouter.ai/api/v1"
             />
           </div>
 
@@ -137,7 +160,7 @@ export default function Settings() {
               type="text"
               value={apiModel}
               onChange={(e) => setApiModel(e.target.value)}
-              placeholder="gpt-4o"
+              placeholder="nvidia/nemotron-3-super-120b-a12b:free"
             />
           </div>
 
@@ -291,15 +314,17 @@ export default function Settings() {
             <input type="color" value={aiColor} onChange={(e) => setAiColor(e.target.value)} />
           </div>
         </section>
-
-        <button className="save-btn" onClick={saveSettings}>
-          Save Settings
-        </button>
       </div>
 
       <div className="settings-footer">
         <button className="quit-btn" onClick={quitApp}>
-          Quit PaperCache
+          Quit
+        </button>
+        <button className="close-btn" onClick={closeSettings}>
+          Close Settings
+        </button>
+        <button className="save-btn" onClick={saveSettings}>
+          Save Settings
         </button>
       </div>
     </div>