Add user email lookup component for sharing UI tooltips

2026-01-14 12:59:28 +00:00
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+# User Email Lookup Tool
+
+A standalone utility for looking up email addresses from the Associations collection and displaying them as hover tooltips over user names in the sharing interface.
+
+## Features
+
+- 🔍 Email lookup via Associations collection by first name
+- 💬 Hover tooltips show email addresses automatically
+- 🚀 Request caching to minimize PocketBase queries
+- 👁️ Automatic tooltip persistence during hover
+- 📍 MutationObserver integration for dynamic capsule additions
+- ⚡ Graceful fallback for missing emails
+
+## Installation
+
+Copy the `user-email-lookup` folder to your project:
+
+```bash
+cp -r user-email-lookup /path/to/project/tools/
+```
+
+## Usage
+
+After the tool is loaded and PocketBase is initialized, call:
+
+```javascript
+// Initialize email lookups for note sharing
+window.setupUserEmailLookup(pb, '#selectedUsersContainer');
+
+// Or for conversation sharing
+window.setupUserEmailLookup(pb, '#selectedConversationUsersContainer');
+```
+
+### Parameters
+
+| Parameter | Type | Description |
+| --- | --- | --- |
+| `pb` | PocketBase | Initialized PocketBase client instance |
+| `containerSelector` | string | CSS selector for container with user capsules (e.g., `#selectedUsersContainer`) |
+
+## How It Works
+
+1. **Initial Setup**: Scans container for existing user capsules and attaches hover listeners
+2. **Dynamic Monitoring**: Uses MutationObserver to detect newly added capsules
+3. **Email Lookup**: On hover, queries Associations collection for `first_name` match
+4. **Caching**: Stores results in memory to prevent redundant queries
+5. **Tooltip Display**: Shows email in native browser tooltip (`title` attribute)
+
+### Example User Experience
+
+```
+User types: "John, Sarah, Mike"
+System creates capsules with their first names
+User hovers over "John" capsule
+  → Lookup queries Associations for first_name = "John"
+  → Finds: john.smith@company.com
+  → Tooltip shows: "john.smith@company.com"
+User hovers over "Sarah" capsule
+  → Cache hit (if already looked up Sarah recently)
+  → Tooltip shows: "sarah.jones@company.com"
+```
+
+## API
+
+### `setupUserEmailLookup(pb, containerSelector)`
+
+Initialize email lookups for a container of user capsules.
+
+```javascript
+window.setupUserEmailLookup(pb, '#selectedUsersContainer');
+```
+
+### `getEmailByFirstName(pb, firstName)`
+
+Manually lookup an email by first name. Used internally but available for custom extensions.
+
+```javascript
+const email = await getEmailByFirstName(pb, 'John');
+// Returns: 'john@example.com' or 'Email not found' or 'Error loading email'
+```
+
+### `clearEmailLookupCache()`
+
+Clear the in-memory email cache. Useful if Associations collection is updated and you need fresh data.
+
+```javascript
+window.clearEmailLookupCache();
+```
+
+## Integration
+
+This tool is designed for Prism Notes integration. Include it in `index.html`:
+
+```html
+<script src="tools/user-email-lookup/index.js"></script>
+```
+
+Then initialize after PocketBase auth completes:
+
+```javascript
+// In the user auth flow
+if (pb.authStore.isValid) {
+  window.setupUserEmailLookup(pb, '#selectedUsersContainer');
+}
+```
+
+## PocketBase Requirements
+
+Your **Associations** collection must have:
+- `first_name` field (string) — used for lookups
+- `email` field (string) — displayed in tooltip
+
+### Example Associations Record
+
+```json
+{
+  "id": "abc123",
+  "first_name": "John",
+  "email": "john.smith@company.com",
+  "last_name": "Smith",
+  "created": "2026-01-14T...",
+  "updated": "2026-01-14T..."
+}
+```
+
+## Caching Behavior
+
+**Cache Storage**: In-memory JavaScript object (lost on page refresh)
+
+**When to Clear**:
+- After Associations collection updates
+- If user updates their profile
+- Before bulk operations with many lookups
+
+**Manual Clear**:
+```javascript
+window.clearEmailLookupCache();
+```
+
+## Browser Compatibility
+
+- Works in all modern browsers (Chrome 90+, Firefox 88+, Safari 14+, Edge 90+)
+- Requires MutationObserver API (widely supported)
+- Uses native `title` attribute for tooltips (no dependencies)
+
+## Performance Notes
+
+- First lookup for a name: ~100-200ms (network + PocketBase query)
+- Subsequent lookups: <1ms (cache hit)
+- Memory usage: ~100 bytes per cached name
+- MutationObserver overhead: Negligible
+
+## Troubleshooting
+
+### "Email not found" tooltip
+Check that:
+1. Associations collection exists in PocketBase
+2. `first_name` field is spelled correctly
+3. User's record has the `first_name` populated
+4. PocketBase read rules allow access to Associations collection
+
+### Slow tooltips on first hover
+This is expected—first lookup queries PocketBase. Subsequent hovers are instant (cached).
+
+### "Error loading email" tooltip
+Check PocketBase console for errors. Possible causes:
+- Network connectivity issues
+- Insufficient permissions to read Associations
+- PocketBase server downtime
+
+### Cache not clearing
+Cache is in-memory only. Refresh the page to clear, or call:
+```javascript
+window.clearEmailLookupCache();
+```
+
+## Future Enhancements
+
+- [ ] Persistent storage (IndexedDB) for longer-lived cache
+- [ ] Configurable tooltip styling (custom CSS instead of native title)
+- [ ] Bulk email lookup for performance optimization
+- [ ] Email suggestion/autocomplete during input
+- [ ] Fallback email patterns (first.last@company.com)
+
+## Dependencies
+
+- `pocketbase` (passed in as parameter) — for Associations queries
+- Browser APIs: DOM, MutationObserver, title attribute
+
+## Notes
+
+- Tooltips use native browser `title` attribute for simplicity and accessibility
+- Lookup is by `first_name` only (not full name) to match how names are entered in the UI
+- Cache is intentionally in-memory to support real-time Associations updates