# HTML Service Admin UI - v0.1.3

**Version**: v0.1.3  
**Status**: ✅ Production Ready  
**Type**: Minor Version (Architecture + Bug Fixes)  
**Focus**: JSON Configuration + Import Maps + Bug Fixes

---

## 🎯 Overview

v0.1.3 represents a **breakthrough in IFD methodology** by:

1. **Converting configuration to JSON** - Pure data format, tool-friendly
2. **Using Import Maps** - Zero-copy version increments via runtime redirects
3. **Fixing critical bugs** - DOMContentLoaded timing + output type detection
4. **Enhanced debugging** - 5 color-coded test buttons

**Key Innovation**: Import Maps allow v0.1.2 code to run unchanged while using v0.1.3's JSON configuration - achieving true zero-copy IFD!

---

## ✨ What's New

### 1. JSON Configuration ✅
**Before (v0.1.2)**: JavaScript object with 215 lines
**After (v0.1.3)**: Pure JSON data file

```json
{
  "html-to-dict": {
    "id": "html-to-dict",
    "display_name": "HTML → Dict",
    "route": "/html/to/dict",
    "method": "POST",
    "description": "Parse HTML into a nested dictionary structure...",
    "category": "html",
    "input_type": "html",
    "output_type": "json",
    "requires_max_depth": false,
    "parameters": {
      "html": { "required": true, "type": "string" },
      "max_depth": { "required": false, "type": "integer", "default": 256 }
    }
  }
}
```

**Benefits**:
- ✅ Pure data (no code mixed with config)
- ✅ Language agnostic (backend, frontend, docs can all use it)
- ✅ Easy validation (JSON schema possible)
- ✅ Better tooling (JSON editors, validators, formatters)
- ✅ Can be generated/modified by tools

### 2. Import Maps for Zero-Copy IFD ✅✅✅

```html
<script type="importmap">
{
  "imports": {
    "../v0.1.2/js/config/Endpoints__Config.js": "./js/config/Endpoints__Config.js",
    "../../v0.1.2/js/config/Endpoints__Config.js": "./js/config/Endpoints__Config.js"
  }
}
</script>
```

**What It Does**:
1. v0.1.2 code loads: `import { X } from '../config/Endpoints__Config.js'`
2. Browser intercepts import
3. Redirects to v0.1.3 config
4. v0.1.2 code runs with v0.1.3 data!

**Result**: TRUE zero-copy version increment! 🎉

### 3. Bug Fixes ✅

**Bug #1: DOMContentLoaded Timing**
- **Problem**: Transform button didn't respond
- **Cause**: Module scripts are deferred, DOM already loaded
- **Fix**: Check `document.readyState` before adding listener

**Bug #2: Tree View Output Detection**  
- **Problem**: Tree view incorrectly detected as HTML → JSON parse error
- **Cause**: Detection logic guessed wrong (text starting with `<` = HTML)
- **Fix**: Always use `config.output_type` from endpoints.json

### 4. Enhanced Debug Utilities ✅

5 beautiful color-coded buttons for instant testing:
- 📘 **HTML→Dict** (Purple gradient)
- 📝 **HTML→Text Nodes** (Pink gradient)
- 🌳 **HTML→Tree View** (Cyan gradient)
- #️⃣ **HTML→HTML (Hash)** (Green gradient)
- ❌ **HTML→HTML (XXX)** (Orange gradient)

One click = auto-select + transform! 🚀

---

## 📁 File Structure

```
v0.1.3/
├── index.html                       # Dashboard (references v0.1.1)
├── playground.html                  # Playground with Import Maps
├── README.md                        # This file
│
├── debug/
│   └── debug-utils.js              # Enhanced testing helper
│
└── js/
    ├── playground.js               # Fixed orchestrator
    └── config/
        ├── endpoints.json          # Pure JSON configuration
        └── Endpoints__Config.js    # JSON loader + utilities
```

**Total Files**: 7  
**Code Duplication**: 0% (still zero!)

### Referenced Files (Not Copied)

**From v0.1.2** (via Import Maps):
- `js/services/API__Client.js` - HTTP client
- `components/transformation-selector/Transformation__Selector.js` - Selector component

**From v0.1.1** (unchanged):
- All CSS files
- All components (top-nav, html-input, output-viewer)
- Dashboard JavaScript

---

#### Using Debug Buttons

The debug helper provides instant testing:

1. Load playground
2. Click any debug button on the right
3. Transformation auto-selects and executes
4. Check console for detailed logs

---

### Version Independence

- ✅ v0.1.3 can be deleted without breaking v0.1.2
- ✅ v0.1.2 can run independently of v0.1.3
- ✅ v0.1.3 enhances but doesn't replace v0.1.2
- ✅ True incremental refinement

---

## 🔧 Technical Details

### Top-Level Await

```javascript
// Load JSON with top-level await (modern ES6)
const response = await fetch('./js/config/endpoints.json');
export const Endpoints__Config = await response.json();
```

**Requirements**: Chrome 89+, Firefox 108+, Safari 16.4+

### Import Maps

```html
<script type="importmap">
{
  "imports": {
    "../v0.1.2/js/config/Endpoints__Config.js": "./js/config/Endpoints__Config.js"
  }
}
</script>
```

**Browser Support**: Same as top-level await (2023+ browsers)

---

## 🎓 Key Learnings

### Import Maps = IFD Game Changer

**Before**: Changing imports required copying files  
**After**: Import Maps redirect at runtime = zero copying  

This is a **breakthrough** for IFD methodology!

### Configuration as Data

**Lesson**: Separating data from code enables:
- Tool-based editing
- Backend/frontend sharing
- Schema validation
- Auto-generation