80 lines
2.9 KiB
Markdown
80 lines
2.9 KiB
Markdown
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# Tools — Document Scanner & Media Processing
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Self-hosted, no-install document scanner dan media processing tools yang jalan di browser. Alternatif dari CamScanner, ilovepdf, compressjpeg — tanpa upload ke pihak ketiga.
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## Tech Stack
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- **Frontend**: Next.js 16 + TypeScript + shadcn/ui + Tailwind v4 + Framer Motion
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- **Backend**: Rust (Axum gateway + worker pool with Tokio)
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- **Queue**: NATS JetStream (job queue + progress pub/sub)
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- **Cache**: Redis (job metadata, rate limiting)
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- **Image Processing**: `image` + `imageproc` crates (edge detection, warp, binarization, deskew)
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- **OCR**: Tesseract via `leptess` crate (optional feature)
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## Architecture
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```
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Browser → Next.js (frontend) → Rust Gateway (Axum) → NATS Queue → Workers (Tokio+Rayon)
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↕ ↕
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Redis Temp Storage
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```
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## Directory Structure
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```
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apps/tools/
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├── frontend/ # Next.js 16 SPA
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│ ├── src/
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│ │ ├── app/ # Pages + API routes
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│ │ ├── components/# shadcn/ui components
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│ │ └── hooks/ # Custom hooks (useJobStatus, useUpload)
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│ ├── package.json
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│ └── next.config.ts
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├── backend/ # Rust workspace
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│ ├── common/ # Shared types, errors, NATS constants
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│ ├── gateway/ # Axum API server (upload, job, WS, download)
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│ ├── workers/ # Processing workers (scanner, image, PDF)
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│ └── wasm/ # WASM image processing (future)
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├── scripts/
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│ └── entrypoint.sh
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└── Dockerfile
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```
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## Development
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```bash
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# Start Redis + NATS
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docker compose -f infra/compose/shared.yml -f infra/compose/nats.yml up -d
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# Start Rust workers
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cd apps/tools/backend
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REDIS_URL=redis://localhost:6379 NATS_URL=nats://localhost:4222 cargo run --bin workers
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# Start Rust gateway (another terminal)
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REDIS_URL=redis://localhost:6379 NATS_URL=nats://localhost:4222 \
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STORAGE_PATH=/tmp/tools cargo run --bin gateway
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# Start Next.js frontend (another terminal)
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cd apps/tools/frontend
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bun dev --port 3002
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```
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## Build
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```bash
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docker build -f infra/docker/tools.Dockerfile -t tools:latest .
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```
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## Pipeline Stages (Document Scanner)
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1. **Preprocess** — Load, resize (max 2000px), grayscale
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2. **Edge Detection** — Canny with adaptive threshold + morphological close
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3. **Corner Detection** — Contour analysis with fallback chain
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4. **Perspective Warp** — DLT homography + bilinear interpolation
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5. **Shadow Removal** — Background subtraction + CLAHE
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6. **Binarization** — Sauvola local threshold (integral image accelerated)
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7. **Deskew** — Hough transform line detection
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8. **Enhance** — Unsharp mask + contrast adjustment
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9. **OCR** — Tesseract (English + Indonesian)
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10. **PDF Generation** — Searchable PDF with invisible text layer
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