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