124 lines
5.6 KiB
Markdown
124 lines
5.6 KiB
Markdown
# LexAI Phase 1 — Build Summary
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**Built by:** Forge 🔨
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**Date:** 2026-03-06
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**Deadline:** 3PM PH time
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**Status:** ✅ All 7 workitems completed and pushed
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---
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## What Was Built
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### 1. WXT Project Setup (Issue #1) ✅
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- **Problem:** `@wxt-dev/module-react` was missing; `wxt/sandbox` import path was invalid in WXT 0.20.x
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- **Fix:** Installed `@wxt-dev/module-react`; updated imports to `wxt/utils/define-background` and `wxt/utils/define-content-script`
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- **Result:** `npm run build` completes cleanly in ~3s, output size ~166KB
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### 2. Text Selection Detection (Issue #2) ✅
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- Handles **three element types**:
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- `<textarea>` and `<input>` — uses `selectionStart`/`selectionEnd` on the element
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- `contenteditable` and regular DOM — uses the Selection/Range API
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- Captures and stores the active element + selection offsets at selection time, so replacement works even after the floating toolbar takes focus
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- 50ms debounce on `mouseup` to let the browser finalize selection
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### 3. Floating Toolbar UI (Issue #3) ✅
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- Polished dark toolbar with 4 actions: **✓ Fix**, **↺ Rephrase**, **↓ Shorten**, **↑ Expand**
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- Smart positioning: appears above the cursor, clamps to viewport edges, flips below if too close to top
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- Uses `data-lexai="true"` attribute on all LexAI elements to prevent self-triggering
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- Hover effects, smooth transitions, colored labels per action
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- `mousedown` preventDefault preserves the selection while clicking toolbar buttons
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- Auto-hides on: scroll, clicking elsewhere, Escape key
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### 4. Service Worker as LLM API Proxy (Issue #4) ✅
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- Background service worker receives `ANALYZE_TEXT` messages from content script
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- Properly uses `return true` in `onMessage` listener to keep async channel open
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- Routes to correct provider based on `chrome.storage.local` config
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- Full error handling: network errors, HTTP errors, empty responses — all surface a user-friendly message
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### 5. OpenAI Provider (Issue #5) ✅
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- Calls `https://api.openai.com/v1/chat/completions`
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- Strongly typed request/response with proper error extraction from OpenAI's error format
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- Default model: `gpt-4o-mini`
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- Also implemented: **Anthropic**, **Groq**, and **OpenRouter** providers (all with proper error handling)
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### 6. Options Page (Issue #6) ✅
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- Dark-themed, polished UI matching the toolbar aesthetic
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- Provider selector (OpenAI, Anthropic, Groq, OpenRouter)
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- Model selector (auto-populated per provider)
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- Password input with show/hide toggle
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- "Get API key →" link per provider
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- Saves to `chrome.storage.local` with visual feedback: idle → saving → saved/error
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- Enter key triggers save
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### 7. Result Modal with Replace Button (Issue #7) ✅
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- Full-screen dark overlay with centered modal
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- Shows the LLM suggestion in a styled code block
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- **Replace** button: calls `replaceText()` which properly handles both textarea/input and DOM selection paths
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- **Copy** button: copies to clipboard with confirmation flash
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- **Dismiss** button and overlay click to close
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- Escape key closes the modal
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- Error state shown cleanly with ❌ prefix
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---
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## Architecture
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```
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Content Script (content.ts)
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├── Detects text selection (textarea / input / contenteditable)
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├── Shows floating toolbar above selection
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├── On action click → sends ANALYZE_TEXT to service worker
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├── Shows loading state while waiting
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└── Shows result modal with Replace/Copy/Dismiss
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Background Service Worker (background.ts)
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├── Listens for ANALYZE_TEXT messages
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├── Reads provider/apiKey/model from chrome.storage.local
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└── Routes to OpenAI / Anthropic / Groq / OpenRouter
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Options Page (Options.tsx)
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└── Saves provider/model/apiKey to chrome.storage.local
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Popup (Popup.tsx)
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└── Shows current config status + link to Options
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```
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---
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## Known Issues / Caveats
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1. **No Tailwind CSS** — styles are all inline CSS objects. Tailwind was in devDependencies but WXT's PostCSS integration wasn't configured. Inline styles work reliably in extension content scripts (no host page CSS conflicts).
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2. **Shadow DOM not used** — The toolbar/modal are injected directly into `document.body`. A shadow DOM would better isolate styles but adds complexity. The `data-lexai="true"` attribute prevents self-triggering.
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3. **API key stored as plaintext** — TweetNaCl encryption (Issue #13) is in the backlog. For Phase 1, the key is in `chrome.storage.local` which is only accessible to the extension.
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4. **Content-editable replace** — Uses Range API with `range.deleteContents()` + `insertNode()`. Falls back to `execCommand('insertText')` if range throws. Works on most sites but highly customized editors (like Google Docs) may not respond correctly.
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5. **No streaming** — Responses are non-streaming (full response returned at once). Good enough for Phase 1; streaming UX can be a Phase 2 improvement.
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---
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## Build Output
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```
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.output/chrome-mv3/manifest.json 485 B
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.output/chrome-mv3/options.html 379 B
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.output/chrome-mv3/popup.html 419 B
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.output/chrome-mv3/background.js 5 kB
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.output/chrome-mv3/chunks/client-*.js 142.52 kB
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.output/chrome-mv3/chunks/options-*.js 5.66 kB
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.output/chrome-mv3/chunks/popup-*.js 1.65 kB
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.output/chrome-mv3/content-scripts/content.js 10.38 kB
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Total: ~166 KB
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```
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---
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## Files Changed
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- `entrypoints/background.ts` — Complete rewrite with typed providers
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- `entrypoints/content.ts` — Complete rewrite with proper selection/toolbar/modal
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- `entrypoints/options/Options.tsx` — Complete rewrite with polished UI
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- `package.json` + `package-lock.json` — Added `@wxt-dev/module-react`
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