# Python API

Python bindings via [PyO3](https://pyo3.rs). Requires Rust toolchain for building from source.

## Install

```bash
pip install maturin
maturin develop --release
```

## Usage

```python
import pdf_inspector

# Full processing: detect + extract + convert to Markdown
result = pdf_inspector.process_pdf("document.pdf")
print(result.pdf_type)      # "text_based", "scanned", "image_based", "mixed"
print(result.confidence)     # 0.0 - 1.0
print(result.page_count)     # number of pages
print(result.markdown)       # Markdown string or None

# Process specific pages only
result = pdf_inspector.process_pdf("document.pdf", pages=[1, 3, 5])

# Process from bytes (no filesystem needed)
with open("document.pdf", "rb") as f:
    result = pdf_inspector.process_pdf_bytes(f.read())

# Fast detection only (no text extraction)
result = pdf_inspector.detect_pdf("document.pdf")
if result.pdf_type == "text_based":
    print("Can extract locally!")
else:
    print(f"Pages needing OCR: {result.pages_needing_ocr}")

# Plain text extraction
text = pdf_inspector.extract_text("document.pdf")

# Positioned text items with font info
items = pdf_inspector.extract_text_with_positions("document.pdf")
for item in items[:5]:
    print(f"'{item.text}' at ({item.x:.0f}, {item.y:.0f}) size={item.font_size}")
```

## API reference

| Function | Description |
|---|---|
| `process_pdf(path, pages=None)` | Full processing (detect + extract + markdown) |
| `process_pdf_bytes(data, pages=None)` | Full processing from bytes |
| `detect_pdf(path)` | Fast detection only (returns PdfResult) |
| `detect_pdf_bytes(data)` | Fast detection from bytes |
| `classify_pdf(path)` | Lightweight classification (returns PdfClassification) |
| `classify_pdf_bytes(data)` | Lightweight classification from bytes |
| `extract_text(path)` | Plain text extraction |
| `extract_text_bytes(data)` | Plain text extraction from bytes |
| `extract_text_with_positions(path, pages=None)` | Text with X/Y coords and font info |
| `extract_text_with_positions_bytes(data, pages=None)` | Text with positions from bytes |
| `extract_text_in_regions(path, page_regions)` | Extract text in bounding-box regions |
| `extract_text_in_regions_bytes(data, page_regions)` | Region extraction from bytes |

## Types

**`PdfResult` fields:** `pdf_type`, `markdown`, `page_count`, `processing_time_ms`, `pages_needing_ocr`, `title`, `confidence`, `is_complex_layout`, `pages_with_tables`, `pages_with_columns`, `has_encoding_issues`

**`PdfClassification` fields:** `pdf_type`, `page_count`, `pages_needing_ocr` (0-indexed), `confidence`

**`TextItem` fields:** `text`, `x`, `y`, `width`, `height`, `font`, `font_size`, `page`, `is_bold`, `is_italic`, `item_type`

**`RegionText` fields:** `text`, `needs_ocr`

**`PageRegionTexts` fields:** `page` (0-indexed), `regions` (list of RegionText)
