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> [!NOTE]
> ์ด ๋ฌธ์„œ์—๋Š” AI ์ƒ์„ฑ ์ฝ˜ํ…์ธ ๊ฐ€ ํฌํ•จ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ์ •ํ™•์„ฑ์„ ์œ„ํ•ด ๋…ธ๋ ฅํ•˜๊ณ  ์žˆ์ง€๋งŒ ๋ถ€์ •ํ™•ํ•œ ๋‚ด์šฉ์ด ์žˆ์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. ๋ฌธ์ œ๊ฐ€ ๋ฐœ๊ฒฌ๋˜๋ฉด ๋‹ค์Œ์„ ํ†ตํ•ด ์‹ ๊ณ ํ•ด ์ฃผ์„ธ์š”:
>
> - [GitHub Issues](https://github.com/PDFMathTranslate-next/PDFMathTranslate-next/issues)
> - ์ปค๋ฎค๋‹ˆํ‹ฐ ๊ธฐ์—ฌ (PR ํ™˜์˜ํ•ฉ๋‹ˆ๋‹ค!)

## Python API: do_translate_async_stream

### ๊ฐœ์š”
- do_translate_async_stream ์€ ๋‹จ์ผ PDF ๋ฅผ ๋ฒˆ์—ญํ•˜๊ณ  ์ด๋ฒคํŠธ (์ง„ํ–‰ ์ƒํ™ฉ/์˜ค๋ฅ˜/์™„๋ฃŒ) ์ŠคํŠธ๋ฆผ์„ ์ƒ์„ฑํ•˜๋Š” ์ €์ˆ˜์ค€ ๋น„๋™๊ธฐ ์ง„์ž…์ ์ž…๋‹ˆ๋‹ค.
- ์‹ค์‹œ๊ฐ„ ์ง„ํ–‰ ์ƒํ™ฉ๊ณผ ๊ฒฐ๊ณผ์— ๋Œ€ํ•œ ์™„์ „ํ•œ ์ œ์–ด๋ฅผ ์›ํ•˜๋Š” ์‚ฌ์šฉ์ž ์ •์˜ UI ๋‚˜ CLI ๋ฅผ ๊ตฌ์ถ•ํ•˜๋Š” ๋ฐ ์ ํ•ฉํ•ฉ๋‹ˆ๋‹ค.
- ์œ ํšจ์„ฑ์ด ๊ฒ€์ฆ๋œ SettingsModel ๊ณผ ํŒŒ์ผ ๊ฒฝ๋กœ๋ฅผ ์ˆ˜๋ฝํ•˜๊ณ , dict ์ด๋ฒคํŠธ์˜ ๋น„๋™๊ธฐ ์ƒ์„ฑ๊ธฐ๋ฅผ ๋ฐ˜ํ™˜ํ•ฉ๋‹ˆ๋‹ค.

### ์„œ๋ช…
- Import: `from pdf2zh_next.high_level import do_translate_async_stream`
- Call: `async for event in do_translate_async_stream(settings, file): ...`
- Parameters:
  - settings: SettingsModel. ์œ ํšจํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค; ํ•จ์ˆ˜๋Š” `settings.validate_settings()` ๋ฅผ ํ˜ธ์ถœํ•ฉ๋‹ˆ๋‹ค.
  - file: str | pathlib.Path. ๋ฒˆ์—ญํ•  ๋‹จ์ผ PDF ํŒŒ์ผ์ž…๋‹ˆ๋‹ค. ์กด์žฌํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.

์ฐธ๊ณ :

- `settings.basic.input_files` ๋Š” ์ด ํ•จ์ˆ˜์—์„œ ๋ฌด์‹œ๋ฉ๋‹ˆ๋‹ค; ์ฃผ์–ด์ง„ `file` ๋งŒ ๋ฒˆ์—ญ๋ฉ๋‹ˆ๋‹ค.
- `settings.basic.debug` ๊ฐ€ True ์ธ ๊ฒฝ์šฐ, ๋ฒˆ์—ญ์€ ๋ฉ”์ธ ํ”„๋กœ์„ธ์Šค์—์„œ ์‹คํ–‰๋ฉ๋‹ˆ๋‹ค; ๊ทธ๋ ‡์ง€ ์•Š์œผ๋ฉด ํ•˜์œ„ ํ”„๋กœ์„ธ์Šค์—์„œ ์‹คํ–‰๋ฉ๋‹ˆ๋‹ค. ๋‘ ๊ฒฝ์šฐ ๋ชจ๋‘ ์ด๋ฒคํŠธ ์Šคํ‚ค๋งˆ๋Š” ๋™์ผํ•ฉ๋‹ˆ๋‹ค.

### ์ด๋ฒคํŠธ ์ŠคํŠธ๋ฆผ ๊ณ„์•ฝ
๋น„๋™๊ธฐ ์ƒ์„ฑ์ž๋Š” ๋‹ค์Œ๊ณผ ๊ฐ™์€ ์œ ํ˜•์˜ JSON ํ˜•์‹ dict ์ด๋ฒคํŠธ๋ฅผ ์ƒ์„ฑํ•ฉ๋‹ˆ๋‹ค:

- ๋‹จ๊ณ„ ์š”์•ฝ ์ด๋ฒคํŠธ: `stage_summary` (์„ ํƒ ์‚ฌํ•ญ, ์ฒ˜์Œ ๋‚˜ํƒ€๋‚  ์ˆ˜ ์žˆ์Œ)
  - ํ•„๋“œ
    - `type`: "stage_summary"
    - `stages`: ์˜ˆ์ƒ ์ž‘์—… ๋ถ„ํฌ๋ฅผ ์„ค๋ช…ํ•˜๋Š” ๊ฐ์ฒด `{ "name": str, "percent": float }`์˜ ๋ชฉ๋ก
    - `part_index`: ์ด ์š”์•ฝ ์ด๋ฒคํŠธ์˜ ๊ฒฝ์šฐ 0 ์ผ ์ˆ˜ ์žˆ์Œ
    - `total_parts`: ์ „์ฒด ๋ถ€๋ถ„ ์ˆ˜ (>= 1)

- ์ง„ํ–‰ ์ƒํ™ฉ ์ด๋ฒคํŠธ: `progress_start`, `progress_update`, `progress_end`
  - ๊ณตํ†ต ํ•„๋“œ
    - `type`: ์œ„ ์ค‘ ํ•˜๋‚˜
    - `stage`: ์‚ฌ๋žŒ์ด ์ฝ์„ ์ˆ˜ ์žˆ๋Š” ๋‹จ๊ณ„ ์ด๋ฆ„ (์˜ˆ: "PDF ๊ตฌ๋ฌธ ๋ถ„์„ ๋ฐ ์ค‘๊ฐ„ ํ‘œํ˜„ ์ƒ์„ฑ", "๋‹จ๋ฝ ๋ฒˆ์—ญ", "PDF ์ €์žฅ")
    - `stage_progress`: ํ˜„์žฌ ๋‹จ๊ณ„ ๋‚ด ์ง„ํ–‰๋ฅ ์„ ๋‚˜ํƒ€๋‚ด๋Š” [0, 100] ๋ฒ”์œ„์˜ float
    - `overall_progress`: ์ „์ฒด ์ง„ํ–‰๋ฅ ์„ ๋‚˜ํƒ€๋‚ด๋Š” [0, 100] ๋ฒ”์œ„์˜ float
    - `part_index`: ํ˜„์žฌ ๋ถ€๋ถ„ ์ธ๋ฑ์Šค (์ผ๋ฐ˜์ ์œผ๋กœ ์ง„ํ–‰ ์ƒํ™ฉ ์ด๋ฒคํŠธ์˜ ๊ฒฝ์šฐ 1 ๋ถ€ํ„ฐ ์‹œ์ž‘)
    - `total_parts`: ์ „์ฒด ๋ถ€๋ถ„ ์ˆ˜ (>= 1). ํฐ ๋ฌธ์„œ๋Š” ์ž๋™์œผ๋กœ ๋ถ„ํ• ๋  ์ˆ˜ ์žˆ์Œ.
    - `stage_current`: ๋‹จ๊ณ„ ๋‚ด ํ˜„์žฌ ๋‹จ๊ณ„
    - `stage_total`: ๋‹จ๊ณ„ ๋‚ด ์ „์ฒด ๋‹จ๊ณ„ ์ˆ˜

- ์™„๋ฃŒ ์ด๋ฒคํŠธ: `finish`
  - ํ•„๋“œ
    - `type`: "finish"
    - `translate_result`: ์ตœ์ข… ์ถœ๋ ฅ์„ ์ œ๊ณตํ•˜๋Š” **๊ฐ์ฒด** (์ฐธ๊ณ : ์‚ฌ์ „์ด ์•„๋‹Œ ํด๋ž˜์Šค ์ธ์Šคํ„ด์Šค)
      - `original_pdf_path`: ์ž…๋ ฅ PDF ๊ฒฝ๋กœ
      - `mono_pdf_path`: ๋‹จ์ผ ์–ธ์–ด ๋ฒˆ์—ญ PDF ๊ฒฝ๋กœ (๋˜๋Š” None)
      - `dual_pdf_path`: ์ด์ค‘ ์–ธ์–ด ๋ฒˆ์—ญ PDF ๊ฒฝ๋กœ (๋˜๋Š” None)
      - `no_watermark_mono_pdf_path`: ์›Œํ„ฐ๋งˆํฌ๊ฐ€ ์—†๋Š” ๋‹จ์ผ ์–ธ์–ด ์ถœ๋ ฅ ๊ฒฝ๋กœ (์ƒ์„ฑ๋œ ๊ฒฝ์šฐ), ๊ทธ๋ ‡์ง€ ์•Š์œผ๋ฉด None
      - `no_watermark_dual_pdf_path`: ์›Œํ„ฐ๋งˆํฌ๊ฐ€ ์—†๋Š” ์ด์ค‘ ์–ธ์–ด ์ถœ๋ ฅ ๊ฒฝ๋กœ (์ƒ์„ฑ๋œ ๊ฒฝ์šฐ), ๊ทธ๋ ‡์ง€ ์•Š์œผ๋ฉด None
      - `auto_extracted_glossary_path`: ์ž๋™ ์ถ”์ถœ ์šฉ์–ด์ง‘ CSV ๊ฒฝ๋กœ (๋˜๋Š” None)
      - `total_seconds`: ๊ฒฝ๊ณผ ์‹œ๊ฐ„ (์ดˆ, float)
      - `peak_memory_usage`: ๋ฒˆ์—ญ ์ค‘ ๋Œ€๋žต์ ์ธ ์ตœ๋Œ€ ๋ฉ”๋ชจ๋ฆฌ ์‚ฌ์šฉ๋Ÿ‰ (float; ๊ตฌํ˜„์— ๋”ฐ๋ฅธ ๋‹จ์œ„)

- ์˜ค๋ฅ˜ ์ด๋ฒคํŠธ: `error`
  - ํ•„๋“œ
    - `type`: "error"
    - `error`: ์‚ฌ๋žŒ์ด ์ฝ์„ ์ˆ˜ ์žˆ๋Š” ์˜ค๋ฅ˜ ๋ฉ”์‹œ์ง€
    - `error_type`: `BabeldocError`, `SubprocessError`, `IPCError`, `SubprocessCrashError` ๋“ฑ ์ค‘ ํ•˜๋‚˜
    - `details`: ์„ ํƒ์  ์„ธ๋ถ€ ์ •๋ณด (์˜ˆ: ์›๋ณธ ์˜ค๋ฅ˜ ๋˜๋Š” ํŠธ๋ ˆ์ด์Šค๋ฐฑ)

์ค‘์š”ํ•œ ๋™์ž‘:
- ์„ ํƒ์ ์œผ๋กœ `stage_summary` ๊ฐ€ ์ง„ํ–‰๋ฅ ์ด ์‹œ์ž‘๋˜๊ธฐ ์ „์— ๋ฐœ์ƒํ•  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.
- ํŠน์ • ์‹คํŒจ ์‹œ, ์ƒ์„ฑ๊ธฐ๋Š” ๋จผ์ € `error` ์ด๋ฒคํŠธ๋ฅผ yield ํ•œ ๋‹ค์Œ `TranslationError` ์—์„œ ํŒŒ์ƒ๋œ ์˜ˆ์™ธ๋ฅผ ๋ฐœ์ƒ์‹œํ‚ต๋‹ˆ๋‹ค. ์˜ค๋ฅ˜ ์ด๋ฒคํŠธ๋ฅผ ํ™•์ธํ•˜๊ณ  ์˜ˆ์™ธ๋ฅผ catch ํ•  ์ค€๋น„๋ฅผ ๋ชจ๋‘ ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
- `progress_update` ์ด๋ฒคํŠธ๋Š” ๋™์ผํ•œ ๊ฐ’์œผ๋กœ ๋ฐ˜๋ณต๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค; ํ•„์š”ํ•˜๋‹ค๋ฉด ์†Œ๋น„์ž๋Š” ๋””๋ฐ”์šด์‹ฑ์„ ํ•ด์•ผ ํ•ฉ๋‹ˆ๋‹ค.
- `finish` ์ด๋ฒคํŠธ๋ฅผ ์ˆ˜์‹ ํ•˜๋ฉด ์ŠคํŠธ๋ฆผ ์†Œ๋น„๋ฅผ ์ค‘์ง€ํ•˜์„ธ์š”.

### ์ตœ์†Œ ์‚ฌ์šฉ ์˜ˆ์‹œ (๋น„๋™๊ธฐ)
```python
import asyncio
from pathlib import Path
from pdf2zh_next.high_level import do_translate_async_stream

# Assume you already have a valid SettingsModel instance named `settings`
# and a PDF file path

async def translate_one(settings, pdf_path: str | Path):
    try:
        async for event in do_translate_async_stream(settings, pdf_path):
            etype = event.get("type")

            if etype == "stage_summary":
                # Optional pre-flight summary of stages
                stages = event.get("stages", [])
                print("Stage summary:", ", ".join(f"{s['name']}:{s['percent']:.2f}" for s in stages))

            elif etype in {"progress_start", "progress_update", "progress_end"}:
                stage = event.get("stage")
                stage_prog = event.get("stage_progress")  # 0..100
                overall = event.get("overall_progress")  # 0..100
                part_i = event.get("part_index")
                part_n = event.get("total_parts")
                print(f"[{etype}] {stage} | stage {stage_prog:.1f}% | overall {overall:.1f}% (part {part_i}/{part_n})")

            elif etype == "error":
                # You will also get a raised exception after this yield
                print("[error]", event.get("error"), event.get("error_type"))

            elif etype == "finish":
                result = event["translate_result"]
                print("Done in", getattr(result, "total_seconds", None), "s")
                print("Mono:", getattr(result, "mono_pdf_path", None))
                print("Dual:", getattr(result, "dual_pdf_path", None))
                print("No-watermark Mono:", getattr(result, "no_watermark_mono_pdf_path", None))
                print("No-watermark Dual:", getattr(result, "no_watermark_dual_pdf_path", None))
                print("Glossary:", getattr(result, "auto_extracted_glossary_path", None))
                print("Peak memory:", getattr(result, "peak_memory_usage", None))
                break

    except Exception as exc:
        # Catch exceptions raised by the stream after an error event
        print("Translation failed:", exc)

# asyncio.run(translate_one(settings, "/path/to/file.pdf"))
```

### ์ทจ์†Œ
์ž‘์—…์„ ์ทจ์†Œํ•˜๋ฉด ์ŠคํŠธ๋ฆผ์„ ์†Œ๋น„ํ•˜๋Š” ์ž‘์—…์ด ์ทจ์†Œ๋ฉ๋‹ˆ๋‹ค. ์ทจ์†Œ๋Š” ๊ธฐ๋ณธ ๋ฒˆ์—ญ ํ”„๋กœ์„ธ์Šค๋กœ ์ „ํŒŒ๋ฉ๋‹ˆ๋‹ค.

```python
import asyncio
from pdf2zh_next.high_level import do_translate_async_stream

async def cancellable(settings, pdf):
    task = asyncio.create_task(_consume(settings, pdf))
    await asyncio.sleep(1.0)  # let it start
    task.cancel()
    try:
        await task
    except asyncio.CancelledError:
        print("Cancelled")

async def _consume(settings, pdf):
    async for event in do_translate_async_stream(settings, pdf):
        if event["type"] == "finish":
            break
```

### ์ด๋ฒคํŠธ ๋ชจ์–‘ ์˜ˆ์‹œ
๋‹จ๊ณ„ ์š”์•ฝ ์ด๋ฒคํŠธ (์˜ˆ์‹œ):
```json
{
  "type": "stage_summary",
  "stages": [
    {"name": "Parse PDF and Create Intermediate Representation", "percent": 0.1086},
    {"name": "DetectScannedFile", "percent": 0.0188},
    {"name": "Parse Page Layout", "percent": 0.1079}
    // ... more stages ...
  ],
  "part_index": 0,
  "total_parts": 1
}
```

Progress event (์˜ˆ์‹œ):
```json
{
  "type": "progress_update",
  "stage": "Translate Paragraphs",
  "stage_progress": 2.04,
  "stage_current": 1,
  "stage_total": 49,
  "overall_progress": 53.44,
  "part_index": 1,
  "total_parts": 1
}
```

Finish event (์˜ˆ์‹œ):
```json
{
  "type": "finish",
  "translate_result": {
    "original_pdf_path": "pdf2zh_files/<session>/table.pdf",
    "mono_pdf_path": "pdf2zh_files/<session>/table.zh-CN.mono.pdf",
    "dual_pdf_path": "pdf2zh_files/<session>/table.zh-CN.dual.pdf",
    "no_watermark_mono_pdf_path": "pdf2zh_files/<session>/table.no_watermark.zh-CN.mono.pdf",
    "no_watermark_dual_pdf_path": "pdf2zh_files/<session>/table.no_watermark.zh-CN.dual.pdf",
    "auto_extracted_glossary_path": "pdf2zh_files/<session>/table.zh-CN.glossary.csv",
    "total_seconds": 42.83,
    "peak_memory_usage": 4651.55
  }
}
```

Error event (example):
```json
{
  "type": "error",
  "error": "Babeldoc translation error: <message>",
  "error_type": "BabeldocError",
  "details": "<optional original error or traceback>"
}
```

### ์ฐธ๊ณ  ์‚ฌํ•ญ ๋ฐ ๋ชจ๋ฒ” ์‚ฌ๋ก€
- ํ•ญ์ƒ ์ƒ์„ฑ๊ธฐ์—์„œ ๋ฐœ์ƒํ•˜๋Š” ์˜ค๋ฅ˜ ์ด๋ฒคํŠธ์™€ ์˜ˆ์™ธ๋ฅผ ๋ชจ๋‘ ์ฒ˜๋ฆฌํ•˜์‹ญ์‹œ์˜ค.
- ๋ถˆํ•„์š”ํ•œ ์ž‘์—…์„ ํ”ผํ•˜๊ธฐ ์œ„ํ•ด `finish` ์ด๋ฒคํŠธ์—์„œ ๋ฃจํ”„๋ฅผ ์ค‘๋‹จํ•˜์‹ญ์‹œ์˜ค.
- ํ˜ธ์ถœํ•˜๊ธฐ ์ „์— `file` ์ด ์กด์žฌํ•˜๊ณ  `settings.validate_settings()` ๊ฐ€ ํ†ต๊ณผํ•˜๋Š”์ง€ ํ™•์ธํ•˜์‹ญ์‹œ์˜ค.
- ๋Œ€ํ˜• ๋ฌธ์„œ๋Š” ๋ถ„ํ• ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค. `part_index/total_parts` ์™€ `overall_progress` ๋ฅผ ์‚ฌ์šฉํ•˜์—ฌ UI ๋ฅผ ๊ตฌ๋™ํ•˜์‹ญ์‹œ์˜ค.
- UI ๊ฐ€ ๋ฐ˜๋ณต์ ์ด๊ณ  ๋™์ผํ•œ ์—…๋ฐ์ดํŠธ์— ๋ฏผ๊ฐํ•œ ๊ฒฝ์šฐ `progress_update` ์ด๋ฒคํŠธ๋ฅผ ๋””๋ฐ”์šด์Šคํ•˜์‹ญ์‹œ์˜ค.
- `report_interval` (SettingsModel): `progress_update` ์ด๋ฒคํŠธ์˜ ๋ฐœ์ƒ ๋นˆ๋„๋งŒ ์ œ์–ดํ•ฉ๋‹ˆ๋‹ค. `stage_summary`, `progress_start`, `progress_end` ๋˜๋Š” `finish` ์—๋Š” ์˜ํ–ฅ์„ ๋ฏธ์น˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค. ๊ธฐ๋ณธ๊ฐ’์€ 0.1 ์ดˆ์ด๋ฉฐ ํ—ˆ์šฉ๋˜๋Š” ์ตœ์†Œ๊ฐ’์€ 0.05 ์ดˆ์ž…๋‹ˆ๋‹ค. ์ง„ํ–‰๋ฅ  ๋ชจ๋‹ˆํ„ฐ ๋กœ์ง์— ๋”ฐ๋ผ, `stage_total <= 3`์ผ ๋•Œ ์—…๋ฐ์ดํŠธ๋Š” `report_interval` ์— ์˜ํ•ด ์ œํ•œ๋˜์ง€ ์•Š์Šต๋‹ˆ๋‹ค.

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<h6><small>์ด ํŽ˜์ด์ง€์˜ ์ผ๋ถ€ ๋‚ด์šฉ์€ GPT ์— ์˜ํ•ด ๋ฒˆ์—ญ๋˜์—ˆ์œผ๋ฉฐ ์˜ค๋ฅ˜๊ฐ€ ํฌํ•จ๋  ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.</small></h6>