609 lines
23 KiB
Python
609 lines
23 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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services/ppt_vision_service.py
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Operation Ollama-First v5.0 / Phase 14 — PPT 視覺自審
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設計原則：
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- 用 minicpm-v（GCP Primary 已拉，5.5GB）對 PPT 截圖做品質檢查
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- 替代 qwen2-vl:7b（Ollama registry 暫無）
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- 用途：PPT 生成後自動跑視覺檢查，找：
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1. 圖表 layout 異常（被切掉、重疊）
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2. 文字溢出框
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3. 空白區塊（資料未填滿）
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4. 配色衝突
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- feature flag PPT_VISION_ENABLED 預設 OFF
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- 失敗自動 skip（不阻擋 PPT 生成主流程）
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"""
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from __future__ import annotations
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import os
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import time
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import base64
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import logging
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import shutil
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import threading
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from io import BytesIO
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from dataclasses import dataclass, field
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from typing import Optional, Dict, Any, List, Sequence
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logger = logging.getLogger(__name__)
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# ─────────────────────────────────────────────────────────────────────────────
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# Feature flag + 配置
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# ─────────────────────────────────────────────────────────────────────────────
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PPT_VISION_MODEL = os.getenv('PPT_VISION_MODEL', 'minicpm-v:latest')
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PPT_VISION_TIMEOUT = int(os.getenv('PPT_VISION_TIMEOUT', '45'))
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PPT_VISION_IMAGE_MAX_EDGE = int(os.getenv('PPT_VISION_IMAGE_MAX_EDGE', '1280'))
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PPT_VISION_IMAGE_QUALITY = int(os.getenv('PPT_VISION_IMAGE_QUALITY', '82'))
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_AUDIT_LOCK = threading.Lock()
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_LAST_AUDIT_RUN: Dict[str, Any] | None = None
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def is_ppt_vision_enabled() -> bool:
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"""Runtime check（避免 import-time freeze）"""
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return os.getenv('PPT_VISION_ENABLED', 'false').strip().lower() in ('true', '1', 'yes', 'on')
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def get_ppt_vision_runtime_status() -> Dict[str, Any]:
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"""Expose why the PPT vision pipeline is or is not ready."""
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env_value = os.getenv('PPT_VISION_ENABLED')
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enabled = is_ppt_vision_enabled()
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converter = shutil.which('libreoffice') or shutil.which('soffice')
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blockers = []
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if not enabled:
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blockers.append('PPT_VISION_ENABLED 未設定為 true')
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if not converter:
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blockers.append('容器內缺少 LibreOffice，無法轉換 PPT 做視覺審核')
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return {
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'enabled': enabled,
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'env_value': env_value if env_value is not None else '未設定（預設 false）',
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'model': os.getenv('PPT_VISION_MODEL', PPT_VISION_MODEL),
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'converter': converter,
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'converter_ready': bool(converter),
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'blockers': blockers,
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'ready': enabled and bool(converter),
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}
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# ─────────────────────────────────────────────────────────────────────────────
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# 結果容器
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# ─────────────────────────────────────────────────────────────────────────────
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@dataclass
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class VisionResult:
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success: bool
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issues_found: List[str] = field(default_factory=list) # 問題清單
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confidence: float = 0.0 # 0-1，模型自評
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raw_response: str = ''
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duration_ms: int = 0
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error: Optional[str] = None
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# ─────────────────────────────────────────────────────────────────────────────
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# Vision 檢查 prompt（繁中強制）
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# ─────────────────────────────────────────────────────────────────────────────
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PPT_VISION_SYSTEM_PROMPT = """你是 momo 電商 PPT 排版品質審核員。
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【任務】檢查截圖找出視覺異常，回繁中清單格式：
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- 圖表被切掉 / 元素重疊 / 文字溢出框 / 空白區塊（資料未填滿）/ 配色衝突
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- 商品名稱顯示不完整 / 數字單位錯誤 / 標題遮擋
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【輸出格式】
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若無問題：回「✅ 無視覺異常」
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若有問題：每行一個問題，格式「⚠️ <問題類型>：<具體描述>」
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【限制】
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- 只檢查視覺，不評估內容對錯
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- 用繁體中文（台灣用語），絕對禁止簡體字
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- 不要寫過多解釋，每個問題一行精簡描述
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"""
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class PPTVisionService:
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"""minicpm-v 視覺檢查服務."""
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def __init__(self, model: str = PPT_VISION_MODEL):
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self.model = model
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def is_available(self) -> bool:
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return is_ppt_vision_enabled()
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def _encode_image_for_vision(self, image_path: str) -> str:
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"""Compress slide screenshots before sending to Ollama vision."""
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try:
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from PIL import Image
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with Image.open(image_path) as im:
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image = im.convert('RGB')
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image.thumbnail((PPT_VISION_IMAGE_MAX_EDGE, PPT_VISION_IMAGE_MAX_EDGE))
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buffer = BytesIO()
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image.save(
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buffer,
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format='JPEG',
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quality=max(50, min(PPT_VISION_IMAGE_QUALITY, 95)),
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optimize=True,
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)
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return base64.b64encode(buffer.getvalue()).decode('ascii')
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except Exception:
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# Pillow is an optimization, not a hard dependency for the vision path.
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with open(image_path, 'rb') as f:
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return base64.b64encode(f.read()).decode('ascii')
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def check_ppt_file(self, pptx_path: str, max_slides: int = 5) -> Dict[str, Any]:
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"""檢查整份 .pptx — Phase 26 整合到 PPT 生成流程。
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流程：
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1. LibreOffice headless 轉 png（每張 slide 一張）
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2. 對前 N 張跑 check_image
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3. 彙總 issues + 平均 confidence
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4. fail-safe：LibreOffice 不在 / 轉檔失敗 → 回 skip 不阻擋主流程
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Returns:
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{
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'success': bool,
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'slides_checked': int,
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'total_issues': int,
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'issues_by_slide': [(slide_num, [issues...]), ...],
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'error': str | None,
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}
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"""
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import os
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import subprocess
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import tempfile
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result = {
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'success': False, 'slides_checked': 0, 'total_issues': 0,
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'issues_by_slide': [], 'error': None,
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}
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if not self.is_available():
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result['error'] = 'PPT_VISION_ENABLED=false'
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return result
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if not os.path.isfile(pptx_path):
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result['error'] = f'pptx not found: {pptx_path}'
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return result
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converter = shutil.which('libreoffice') or shutil.which('soffice')
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if not converter:
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result['error'] = 'libreoffice not installed (skip vision check)'
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return result
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def _finish_with_error(message: str, duration_ms: int = 0) -> Dict[str, Any]:
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result['error'] = message
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try:
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self._persist_audit_result(
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pptx_path=pptx_path,
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result=result,
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avg_confidence=0.0,
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duration_ms=duration_ms,
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)
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except Exception as e:
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logger.warning(f"[PPTVision] persist audit result failed: {e}")
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return result
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# 1. LibreOffice 轉 png
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with tempfile.TemporaryDirectory() as tmpdir:
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convert_started = time.monotonic()
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try:
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proc = subprocess.run(
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[converter, '--headless', '--convert-to', 'png',
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'--outdir', tmpdir, pptx_path],
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capture_output=True, timeout=60,
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)
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if proc.returncode != 0:
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return _finish_with_error(
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f'libreoffice convert failed: {proc.stderr.decode()[:200]}',
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int((time.monotonic() - convert_started) * 1000),
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)
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except FileNotFoundError:
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result['error'] = 'libreoffice not installed (skip vision check)'
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return result
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except subprocess.TimeoutExpired:
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return _finish_with_error(
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'libreoffice convert timeout (60s)',
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int((time.monotonic() - convert_started) * 1000),
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)
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except Exception as e:
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return _finish_with_error(
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f'{type(e).__name__}: {str(e)[:200]}',
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int((time.monotonic() - convert_started) * 1000),
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)
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# LibreOffice 對 .pptx 預設只輸出第一頁；多頁需 --convert-to png:impress_png_Export
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png_files = sorted([
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os.path.join(tmpdir, f) for f in os.listdir(tmpdir)
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if f.lower().endswith('.png')
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])
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if not png_files:
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return _finish_with_error(
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'libreoffice 未產出 png (可能需要 --convert-to png:impress_png_Export)',
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int((time.monotonic() - convert_started) * 1000),
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)
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# 2. 對前 N 張跑 check_image
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import time as _time
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t0 = _time.monotonic()
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confidences = []
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slide_errors = []
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for idx, png in enumerate(png_files[:max_slides]):
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try:
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vr = self.check_image(png)
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if vr.success:
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result['slides_checked'] += 1
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confidences.append(vr.confidence)
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if vr.issues_found:
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result['total_issues'] += len(vr.issues_found)
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result['issues_by_slide'].append((idx + 1, vr.issues_found))
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else:
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slide_errors.append(f"slide {idx + 1}: {vr.error or 'vision model failed'}")
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except Exception as exc:
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message = f"slide {idx + 1}: {type(exc).__name__}: {str(exc)[:160]}"
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slide_errors.append(message)
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logger.warning(f"[PPTVision] slide {idx+1} check failed: {exc}")
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result['success'] = result['slides_checked'] > 0
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if not result['success'] and slide_errors:
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result['error'] = '；'.join(slide_errors[:3])
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if slide_errors:
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result['slide_errors'] = slide_errors
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duration_ms = int((_time.monotonic() - t0) * 1000)
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# Phase 38：寫入 ppt_audit_results 留歷史（失敗安全）
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try:
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self._persist_audit_result(
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pptx_path=pptx_path,
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result=result,
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avg_confidence=(sum(confidences) / len(confidences)) if confidences else 0.0,
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duration_ms=duration_ms,
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)
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except Exception as e:
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logger.warning(f"[PPTVision] persist audit result failed: {e}")
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return result
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def _persist_audit_result(self, pptx_path: str, result: Dict[str, Any],
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avg_confidence: float, duration_ms: int) -> None:
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"""Phase 38: 把每次 audit 結果寫入 ppt_audit_results 表。
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失敗安全：DB 寫入失敗只 log warning，不擋主流程。
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"""
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import os
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from datetime import datetime as _dt
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from sqlalchemy import text as _sa_text
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from database.manager import get_session
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# 推論 audit_status
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if result.get('error'):
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err = result['error']
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if 'libreoffice not installed' in err or 'PPT_VISION_ENABLED' in err:
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status = 'skipped'
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else:
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status = 'error'
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elif result.get('total_issues', 0) > 0:
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status = 'failed'
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elif result.get('success'):
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status = 'passed'
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else:
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status = 'error'
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# issues_found JSONB 序列化
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import json as _json
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issues_json = _json.dumps([
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{'slide': slide_num, 'issues': issues}
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for slide_num, issues in result.get('issues_by_slide', [])
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], ensure_ascii=False)
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try:
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size_kb = round(os.path.getsize(pptx_path) / 1024, 1) if os.path.isfile(pptx_path) else None
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mtime = _dt.fromtimestamp(os.path.getmtime(pptx_path)) if os.path.isfile(pptx_path) else None
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except OSError:
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size_kb = None
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mtime = None
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session = get_session()
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try:
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session.execute(
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_sa_text("""
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INSERT INTO ppt_audit_results
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(pptx_filename, pptx_size_kb, pptx_mtime, vision_enabled,
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audit_status, issues_count, issues_found, confidence,
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duration_ms, error_msg)
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VALUES
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(:fname, :sz, :mt, :ve, :st, :ic, CAST(:if AS JSONB),
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:cf, :du, :em)
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"""),
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{
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'fname': os.path.basename(pptx_path),
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'sz': size_kb,
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'mt': mtime,
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've': True, # 進到這裡代表 vision 已 enabled
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'st': status,
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'ic': result.get('total_issues', 0),
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'if': issues_json,
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'cf': round(avg_confidence, 3),
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'du': duration_ms,
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'em': result.get('error', None),
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},
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)
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session.commit()
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finally:
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session.close()
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def check_image(self, image_path: str) -> VisionResult:
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"""檢查單張 PPT 截圖。
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Args:
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image_path: 本地檔案路徑（jpg/png）
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Returns:
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VisionResult.issues_found 含問題清單；無問題則空 list + confidence=1.0
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"""
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start = time.monotonic()
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if not self.is_available():
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return VisionResult(
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success=False,
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error='PPT_VISION_ENABLED=false (Phase 14 預設 OFF)',
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)
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if not os.path.isfile(image_path):
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return VisionResult(
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success=False,
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error=f'image not found: {image_path}',
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)
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# 讀檔並 base64 編碼；可用時先壓縮縮圖，避免 Ollama vision 被大圖拖慢。
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try:
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img_b64 = self._encode_image_for_vision(image_path)
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except Exception as e:
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return VisionResult(
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success=False,
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error=f'read image failed: {type(e).__name__}: {str(e)[:200]}',
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)
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try:
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from services.ollama_service import OllamaService
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ollama = OllamaService(model=self.model)
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resp = ollama.generate(
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prompt='請檢查這張 momo 電商 PPT 截圖，找出視覺異常。',
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model=self.model,
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system_prompt=PPT_VISION_SYSTEM_PROMPT,
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temperature=0.2,
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timeout=PPT_VISION_TIMEOUT,
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keep_alive='5m',
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options={'num_predict': 256},
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images=[img_b64],
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)
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duration_ms = int((time.monotonic() - start) * 1000)
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if not resp.success:
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return VisionResult(
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success=False, duration_ms=duration_ms,
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error=resp.error or 'ollama vision failed',
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)
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raw = (resp.content or '').strip()
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# 解析輸出：每行一個 ⚠️ 開頭的視為 issue；✅ 無視覺異常則空 list
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issues = []
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for line in raw.split('\n'):
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line = line.strip()
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if line.startswith('⚠️') or line.startswith('warning:') or line.startswith('警告'):
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issues.append(line)
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if '✅' in raw and '無視覺異常' in raw and not issues:
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# 確認是 OK
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return VisionResult(
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success=True, issues_found=[],
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confidence=1.0, raw_response=raw,
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duration_ms=duration_ms,
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)
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return VisionResult(
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success=True, issues_found=issues,
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confidence=0.85 if issues else 0.5,
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raw_response=raw,
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duration_ms=duration_ms,
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)
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except Exception as e:
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duration_ms = int((time.monotonic() - start) * 1000)
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return VisionResult(
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success=False, duration_ms=duration_ms,
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error=f'{type(e).__name__}: {str(e)[:200]}',
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)
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# 全域單例
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ppt_vision_service = PPTVisionService()
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def audit_recent_ppts(reports_dir: str | None = None, hours: int = 24,
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max_files: int = 10,
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filenames: Sequence[str] | None = None) -> Dict[str, Any]:
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"""Phase 26 整合 hook — 每日 22:00 cron 跑：掃 reports/ 當天新增 .pptx 跑視覺檢查。
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Args:
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reports_dir: PPT 輸出目錄，未提供時改用 REPORTS_DIR 環境變數
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hours: 掃過去 N 小時內的檔
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max_files: 一次最多查 N 個檔（避免一次跑太久）
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Returns:
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{
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'audited_files': [...],
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'total_issues': int,
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'errors': [...],
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}
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"""
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import os
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import time
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summary = {'audited_files': [], 'total_issues': 0, 'errors': []}
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if reports_dir is None:
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reports_dir = os.environ.get('REPORTS_DIR', '/app/data/reports')
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if not is_ppt_vision_enabled():
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summary['errors'].append('PPT_VISION_ENABLED=false')
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return summary
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if not os.path.isdir(reports_dir):
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summary['errors'].append(f'{reports_dir} not found')
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return summary
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requested_names = {
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os.path.basename(str(name))
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for name in (filenames or [])
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if str(name).lower().endswith('.pptx')
|
||
}
|
||
|
||
# 掃當天新增 .pptx；若指定 filenames，直接審指定檔，不受 hours 視窗限制。
|
||
cutoff = time.time() - hours * 3600
|
||
pptx_files = []
|
||
for f in os.listdir(reports_dir):
|
||
if not f.lower().endswith('.pptx'):
|
||
continue
|
||
if requested_names and f not in requested_names:
|
||
continue
|
||
full = os.path.join(reports_dir, f)
|
||
try:
|
||
if requested_names or os.path.getmtime(full) >= cutoff:
|
||
pptx_files.append((os.path.getmtime(full), full))
|
||
except OSError:
|
||
continue
|
||
if requested_names:
|
||
found_names = {os.path.basename(path) for _mtime, path in pptx_files}
|
||
for missing in sorted(requested_names - found_names):
|
||
summary['errors'].append(f'{missing}: file not found')
|
||
pptx_files.sort(reverse=True)
|
||
pptx_files = pptx_files[:max_files]
|
||
|
||
svc = PPTVisionService()
|
||
for mtime, path in pptx_files:
|
||
try:
|
||
result = svc.check_ppt_file(path)
|
||
entry = {
|
||
'path': path,
|
||
'slides_checked': result.get('slides_checked', 0),
|
||
'issues': result.get('total_issues', 0),
|
||
'issues_by_slide': result.get('issues_by_slide', []),
|
||
'error': result.get('error'),
|
||
}
|
||
summary['audited_files'].append(entry)
|
||
summary['total_issues'] += entry['issues']
|
||
if entry['error']:
|
||
summary['errors'].append(f"{path}: {entry['error']}")
|
||
except Exception as exc:
|
||
summary['errors'].append(f'{path}: {type(exc).__name__}: {str(exc)[:150]}')
|
||
|
||
return summary
|
||
|
||
|
||
def start_ppt_vision_audit_background(
|
||
*,
|
||
reports_dir: str | None = None,
|
||
hours: int = 24,
|
||
max_files: int = 10,
|
||
filenames: Sequence[str] | None = None,
|
||
) -> Dict[str, Any]:
|
||
"""Queue a non-blocking PPT vision audit run for the admin UI."""
|
||
global _LAST_AUDIT_RUN
|
||
|
||
if _AUDIT_LOCK.locked():
|
||
return {
|
||
'ok': True,
|
||
'status': 'already_running',
|
||
'message': 'PPT vision audit is already running.',
|
||
'last_run': _LAST_AUDIT_RUN,
|
||
}
|
||
|
||
clean_filenames = [
|
||
os.path.basename(str(name))
|
||
for name in (filenames or [])
|
||
if str(name).lower().endswith('.pptx')
|
||
]
|
||
|
||
def _run():
|
||
global _LAST_AUDIT_RUN
|
||
with _AUDIT_LOCK:
|
||
started_at = time.strftime('%Y-%m-%d %H:%M:%S')
|
||
try:
|
||
summary = audit_recent_ppts(
|
||
reports_dir=reports_dir,
|
||
hours=hours,
|
||
max_files=max_files,
|
||
filenames=clean_filenames or None,
|
||
)
|
||
_LAST_AUDIT_RUN = {
|
||
'ok': True,
|
||
'status': 'completed',
|
||
'started_at': started_at,
|
||
'finished_at': time.strftime('%Y-%m-%d %H:%M:%S'),
|
||
'summary': summary,
|
||
}
|
||
except Exception as exc:
|
||
_LAST_AUDIT_RUN = {
|
||
'ok': False,
|
||
'status': 'error',
|
||
'started_at': started_at,
|
||
'finished_at': time.strftime('%Y-%m-%d %H:%M:%S'),
|
||
'error': f'{type(exc).__name__}: {str(exc)[:200]}',
|
||
}
|
||
logger.error("[PPTVision] background audit failed: %s", exc, exc_info=True)
|
||
|
||
thread = threading.Thread(target=_run, name='ppt-vision-audit', daemon=True)
|
||
thread.start()
|
||
return {
|
||
'ok': True,
|
||
'status': 'queued',
|
||
'message': 'PPT vision audit queued.',
|
||
'filenames': clean_filenames,
|
||
'max_files': max_files,
|
||
}
|
||
|
||
|
||
def push_ppt_audit_to_telegram(summary: Dict[str, Any]) -> bool:
|
||
"""有 issues 才推 Telegram（避免靜默報「無問題」洗版）"""
|
||
if summary['total_issues'] <= 0:
|
||
return False
|
||
try:
|
||
from services.telegram_templates import _send_telegram_raw
|
||
except Exception:
|
||
return False
|
||
|
||
lines = [f"🔍 <b>PPT 視覺審核（{len(summary['audited_files'])} 份）</b>"]
|
||
lines.append('━' * 18)
|
||
for entry in summary['audited_files']:
|
||
if entry['issues'] > 0:
|
||
fname = os.path.basename(entry['path']) if hasattr(__import__('os'), 'path') else entry['path']
|
||
import os as _os
|
||
fname = _os.path.basename(entry['path'])
|
||
lines.append(f"\n📊 <code>{fname}</code> ({entry['slides_checked']} slides, "
|
||
f"<b>{entry['issues']} issues</b>)")
|
||
for slide_num, issues in entry['issues_by_slide'][:3]: # 每檔最多列 3 張
|
||
for iss in issues[:2]: # 每張 slide 最多列 2 個 issue
|
||
lines.append(f" Slide {slide_num}: {iss[:120]}")
|
||
|
||
msg = '\n'.join(lines)
|
||
try:
|
||
_send_telegram_raw(msg)
|
||
return True
|
||
except Exception:
|
||
return False
|
||
|
||
|
||
__all__ = [
|
||
'PPTVisionService',
|
||
'VisionResult',
|
||
'ppt_vision_service',
|
||
'is_ppt_vision_enabled',
|
||
'get_ppt_vision_runtime_status',
|
||
'PPT_VISION_SYSTEM_PROMPT',
|
||
'audit_recent_ppts',
|
||
'start_ppt_vision_audit_background',
|
||
'push_ppt_audit_to_telegram',
|
||
]
|