AI Course Content Generator (CCG)

Version: 1.0.0 Location: /Users/shunsukehayashi/dev/ai-course-content-generator-v2

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Triggers

| Trigger | Examples | |---------|----------| | Course creation | "create course", "generate course", "/ccg" | | Development | "ccg dev", "start course generator" | | Build | "ccg build", "build course app" |

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Quick Commands

# Development
cd /Users/shunsukehayashi/dev/ai-course-content-generator-v2 && npm run dev

# Production build
cd /Users/shunsukehayashi/dev/ai-course-content-generator-v2 && npm run build

# Electron dev
cd /Users/shunsukehayashi/dev/ai-course-content-generator-v2 && npm run electron:dev

# Electron build
cd /Users/shunsukehayashi/dev/ai-course-content-generator-v2 && npm run electron:build

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Key Capabilities

1. Course Structure Generation - JSON curriculum generation
2. Lesson Script Generation - Customizable narration scripts
3. Text-to-Speech - Gemini TTS audio generation
4. Slide Generation - Graphic recording style
5. Video Rendering - WebCodecs API MP4 creation
6. Bulk Export - ZIP download of all assets

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Architecture

Vision Panel → Structure → Content Pipeline → Export
     ↓              ↓              ↓            ↓
 Image/PDF/URL  JSON Structure  Slides/Audio  MP3/MP4/ZIP

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Key Files

| File | Purpose | |------|---------| | services/geminiService.ts | Gemini API calls + retry logic | | templates/prompts.ts | Zod schemas + prompt builders | | utils/audioUtils.ts | PCM→MP3 encoding (lamejs) | | utils/videoUtils.ts | MP4 muxing (WebCodecs) | | types.ts | Course structure interfaces | | constants.ts | Defaults + TTS voice options |

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Gemini Models

• Primary: gemini-3-flash-preview (with thinking)
• Backup: gemini-2.5-flash (quota fallback)
• TTS: gemini-2.5-flash-preview-tts
• Image: gemini-3-pro-image-preview

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Environment

• GEMINI_API_KEY required in .env