gamma-migration-deep-dive

# Gamma Migration Deep Dive

## Overview
Comprehensive guide for migrating presentations and workflows from other platforms to Gamma.

## Prerequisites
- Gamma API access
- Source platform export capabilities
- Node.js 18+ for migration scripts
- Sufficient Gamma storage quota

## Supported Migration Paths

| Source | Format | Fidelity | Notes |
|--------|--------|----------|-------|
| PowerPoint | .pptx | High | Native import |
| Google Slides | .pptx export | High | Export first |
| Canva | .pdf/.pptx | Medium | Limited animations |
| Keynote | .pptx export | High | Export first |
| PDF | .pdf | Medium | Static only |
| Markdown | .md | High | Structure preserved |

## Instructions

### Step 1: Inventory Source Presentations
```typescript
// scripts/migration-inventory.ts
interface SourcePresentation {
  id: string;
  title: string;
  source: 'powerpoint' | 'google' | 'canva' | 'other';
  path: string;
  size: number;
  lastModified: Date;
  slideCount?: number;
}

async function inventoryPresentations(sourceDir: string): Promise<SourcePresentation[]> {
  const files = await glob('**/*.{pptx,pdf,key}', { cwd: sourceDir });

  const inventory: SourcePresentation[] = [];

  for (const file of files) {
    const stats = await fs.stat(path.join(sourceDir, file));
    const ext = path.extname(file).toLowerCase();

    inventory.push({
      id: crypto.randomUUID(),
      title: path.basename(file, ext),
      source: detectSource(file),
      path: file,
      size: stats.size,
      lastModified: stats.mtime,
    });
  }

  // Save inventory
  await fs.writeFile(
    'migration-inventory.json',
    JSON.stringify(inventory, null, 2)
  );

  console.log(`Found ${inventory.length} presentations to migrate`);
  return inventory;
}
```

### Step 2: Migration Engine
```typescript
// lib/migration-engine.ts
import { GammaClient } from '@gamma/sdk';

interface MigrationResult {
  sourceId: string;
  gammaId?: string;
  success: boolean;
  error?: string;
  duration: number;