Yuzhiran Dev
485 lines
20 KiB
Python
485 lines
20 KiB
Python
#!/usr/bin/env python3
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"""
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平台适配文章撰写
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根据大纲和平台配置（字数/格式/配图要求），为知乎/公众号/小红书各平台生成适配内容
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"""
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import json, datetime, logging, sys, re
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from pathlib import Path
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from typing import Dict, List
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PROJECT_ROOT = Path(__file__).parent.parent
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sys.path.insert(0, str(PROJECT_ROOT))
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sys.path.insert(0, str(PROJECT_ROOT / 'platform' / 'backend'))
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from db_helper import get_topic_by_id, update_topic_status, save_article
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from content_cleaner import strip_thinking, strip_ai_preface, clean_markdown_content, clean_html_content
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from prompt_loader import get_prompt, get_prompt_params
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from image_generator import insert_lead_image
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try:
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from app.core.nvidia_client import call_llm
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HAVE_LLM = True
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except ImportError:
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HAVE_LLM = False
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import mistune
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DATA_DIR = PROJECT_ROOT / "automation" / "data"
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OUTLINE_DIR = DATA_DIR / "outlines"
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TEMPLATES_DIR = PROJECT_ROOT / "automation" / "templates"
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LOGS_DIR = PROJECT_ROOT / "automation" / "logs"
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TODAY = datetime.datetime.now().strftime("%Y-%m-%d")
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GEN_TIME = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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logging.basicConfig(
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level=logging.INFO,
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format='%(asctime)s - %(levelname)s - %(message)s',
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handlers=[
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logging.FileHandler(LOGS_DIR / f"writer_{TODAY}.log"),
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logging.StreamHandler()
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]
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)
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logger = logging.getLogger(__name__)
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_md_parser = mistune.create_markdown()
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_FALLBACK_PLATFORM_CONFIG = {
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"zhihu": {"max_chars": 3000, "style": "深度长文分析", "min_chars": 1500},
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"wechat": {"max_chars": 1500, "style": "亲切口语化", "min_chars": 800},
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"xiaohongshu": {"max_chars": 800, "style": "图文笔记，emoji+标签", "min_chars": 300},
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}
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def _load_platform_config() -> dict:
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try:
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from app.database import SessionLocal
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from app.models import PlatformConfig
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db = SessionLocal()
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configs = db.query(PlatformConfig).all()
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db.close()
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result = {}
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for c in configs:
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result[c.platform] = {
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"max_chars": c.max_words or _FALLBACK_PLATFORM_CONFIG.get(c.platform, {}).get("max_chars", 3000),
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"style": c.default_format or _FALLBACK_PLATFORM_CONFIG.get(c.platform, {}).get("style", "深度内容"),
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"min_chars": c.min_words or _FALLBACK_PLATFORM_CONFIG.get(c.platform, {}).get("min_chars", 300),
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}
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return result
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except Exception:
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pass
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return dict(_FALLBACK_PLATFORM_CONFIG)
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PLATFORM_CONFIG = _load_platform_config()
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class Writer:
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def __init__(self, topic_id: str):
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self.topic_id = topic_id
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self.topic = self._load_topic()
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outline_file = OUTLINE_DIR / TODAY / f"{topic_id}_outline.md"
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if not outline_file.exists():
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raise FileNotFoundError(f"Outline not found: {outline_file}")
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self.outline_content = outline_file.read_text(encoding='utf-8')
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research_file = DATA_DIR / "research" / TODAY / f"{topic_id}_research.md"
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self.research_notes = research_file.read_text(encoding='utf-8') if research_file.exists() else ""
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def _load_topic(self) -> Dict:
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topic = get_topic_by_id(self.topic_id)
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if not topic:
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raise ValueError(f"Topic {self.topic_id} not found")
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return topic
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def _clean_title(self, title: str) -> str:
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title = re.sub(r'[（(]约\s*\d+字[）)]', '', title)
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title = re.sub(r'[（(]MVP[）)]', '', title)
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title = re.sub(r'[（(][^）)]*?[）)]', '', title)
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return title.strip()
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def _parse_outline_sections(self) -> List[Dict]:
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sections = []
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current = None
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for line in self.outline_content.splitlines():
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if line.startswith("# "):
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if current:
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sections.append(current)
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current = {"level": 1, "title": line[2:].strip(), "content": "", "section_type": "normal"}
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elif line.startswith("## "):
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if current:
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sections.append(current)
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title = line[3:].strip()
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stype = "noise" if title in ("文章大纲", "大纲", "文章结构", "结构") else "normal"
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current = {"level": 2, "title": title, "content": "", "section_type": stype}
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elif line.startswith("### "):
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if current:
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sections.append(current)
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current = {"level": 3, "title": line[4:].strip(), "content": "", "section_type": "normal"}
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else:
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if current and line.strip():
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current['content'] = current.get('content', '') + line + "\n"
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if current:
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sections.append(current)
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return sections
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@staticmethod
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def _clean_markdown(text: str) -> str:
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return clean_markdown_content(text)
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@staticmethod
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def _is_outline_noise(line: str) -> bool:
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stripped = line.strip()
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if not stripped:
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return True
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if stripped.startswith('---'):
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return True
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if '大纲生成时间' in stripped:
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return True
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if stripped.startswith('*大纲'):
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return True
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if re.match(r'^\*{0,3}【[^】]*】\*{0,3}\s*$', stripped):
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return True
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return False
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def _is_bullet_only(self, text: str) -> bool:
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"""检查内容是否主要是要点列表（大纲格式），需要 LLM 展开"""
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lines = [l.strip() for l in text.split('\n') if l.strip()]
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if not lines:
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return False
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bullet_count = sum(1 for l in lines if l.startswith(('- ', '* ', '**', '+ ')))
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return bullet_count / len(lines) > 0.4
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def _expand_section(self, section: Dict) -> str:
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content = section.get('content', '').strip()
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# 大纲要点格式（>40% 行以 -/*/** 开头）应始终由 LLM 展开为连贯段落
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if HAVE_LLM and self._is_bullet_only(content):
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logger.info(f"使用 LLM 扩写章节(要点→段落): {section['title']}")
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prompt = get_prompt("section_expansion",
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topic_title=self.topic['title'],
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section_title=section['title'],
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date=datetime.datetime.now().strftime('%Y年%m月%d日'),
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content=content,
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)
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try:
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params = get_prompt_params("section_expansion")
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expanded = call_llm(prompt, temperature=params.get("temperature", 0.75), max_tokens=params.get("max_tokens", 3000))
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if expanded:
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cleaned = self._clean_markdown(expanded.strip())
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if cleaned:
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return cleaned
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except Exception as e:
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logger.warning(f"LLM 扩写失败: {e}")
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# Fallback: 将 bullet points 展开为段落（过滤噪音行）
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lines = [l.strip() for l in content.split('\n') if not self._is_outline_noise(l)]
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if lines:
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sentences = []
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for line in lines:
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text = line
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for prefix in ['- ', '* ', '1. ', '2. ', '3. ', '4. ', '5. ']:
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if line.startswith(prefix):
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text = line[len(prefix):]
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break
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text = text.strip()
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if text:
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if text[-1] not in '。！？；':
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text += '。'
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sentences.append(text)
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if sentences:
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result = ' '.join(sentences)
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return self._clean_markdown(result)
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return ''
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def generate_full_markdown(self) -> str:
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sections = self._parse_outline_sections()
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parts = []
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for sec in sections:
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if sec['level'] == 1:
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if sec.get('content'):
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expanded = self._expand_section(sec)
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if expanded:
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parts.append(expanded + "\n")
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continue
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# 跳过大纲结构噪音节点
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title_stripped = sec['title'].strip()
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if title_stripped in ('文章大纲', '大纲', '文章结构', '结构'):
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continue
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if sec.get('section_type') == 'noise':
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continue
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heading = f"{'#' * sec['level']} {sec['title']}"
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parts.append(heading)
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if sec.get('content'):
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expanded = self._expand_section(sec)
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parts.append(expanded + "\n")
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full_md = "\n".join(parts).strip()
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# 收集所有引用来源，统一添加到文末
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refs = set()
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for m in re.finditer(r'（来源：([^）]+)）', full_md):
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refs.add(m.group(1).strip())
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if refs:
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# 去掉已有参考资料区，重新生成统一的
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full_md = re.sub(r'\n---\n\*\*参考资料\*\*[\s\S]*$', '', full_md).strip()
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ref_lines = "\n".join(f"- {r}" for r in sorted(refs))
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full_md += f"\n\n---\n\n**参考资料**\n{ref_lines}"
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return full_md
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def _adapt_for_platform(self, markdown: str, platform: str) -> str:
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cfg = PLATFORM_CONFIG[platform]
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max_c = cfg['max_chars']
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lines = markdown.split('\n')
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if platform == "zhihu":
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result = []
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in_list = False
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for line in lines:
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stripped = line.strip()
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# 数据类行 → 引用格式（知乎文章中引用数据能增强可信度）
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if any(stripped.startswith(p) for p in ('据统计', '调研显示', '数据显示', '报告指出', '根据', '数据显示')):
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line = f"> {line}"
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# 列表保持原样（知乎支持 markdown 列表）
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if stripped.startswith('- ') or stripped.startswith('* '):
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if not in_list:
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result.append('')
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in_list = True
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else:
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in_list = False
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result.append(line)
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adapted = '\n'.join(result)
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# 末尾加讨论引导（知乎算法权重：互动率）
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if not any(kw in adapted for kw in ('你觉得', '你怎么看', '欢迎在评论区', '说说你的')):
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adapted += "\n\n---\n\n你觉得这个观点有道理吗？你在工作中有没有类似的经验？欢迎在评论区聊聊。"
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return adapted
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if platform == "xiaohongshu":
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result = []
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char_count = 0
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last_was_heading = False
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for line in lines:
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if char_count >= max_c:
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break
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stripped = line.strip()
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if line.startswith('## '):
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if not last_was_heading and result:
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result.append('')
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char_count += 1
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line = f"## ✨ {line[3:]}"
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last_was_heading = True
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elif line.startswith('### '):
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if not last_was_heading and result:
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result.append('')
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char_count += 1
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line = f"### 💡 {line[4:]}"
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last_was_heading = True
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else:
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last_was_heading = False
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# 超长段落后拆行 + 每段前加点缀
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if stripped and len(stripped) > 60:
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sentences = [s.strip() for s in stripped.replace('。', '。\n').split('\n') if s.strip()]
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for s in sentences:
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if s and char_count < max_c:
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result.append(s)
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char_count += len(s)
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continue
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result.append(line)
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char_count += len(line)
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adapted = '\n'.join(result)
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# 结尾加收藏引导（小红书算法权重：收藏率）
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if '收藏' not in adapted:
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adapted += "\n\n✨ 觉得有用的话点个收藏吧，下次需要的时候随时翻出来看~"
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return adapted
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if platform == "wechat":
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result = []
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for line in lines:
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# 人称统一：我们→我，你们→你
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line = line.replace('我们', '我').replace('你们', '你').replace('我', '你')
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if line.startswith('### '):
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result.append(f"\n**{line[4:]}**\n")
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elif line.startswith('## '):
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result.append(f"\n**{line[3:]}**\n")
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elif line.strip() and len(line) > 80:
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sentences = [s.strip() for s in line.replace('。', '。\n').split('\n') if s.strip()]
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for s in sentences:
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if s:
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result.append(s)
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else:
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result.append(line)
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adapted = '\n'.join(result)
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return adapted
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return markdown
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def _get_platform_tags(self, platform: str) -> str:
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field = self.topic.get('field', '')
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title = self.topic.get('title', '')
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core = self.topic.get('core_concept', '')
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tag_prompts = {
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"zhihu": get_prompt("tags_generation", platform="知乎", title=title, field=field, core=core),
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"wechat": get_prompt("tags_generation", platform="公众号", title=title, field=field, core=core),
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"xiaohongshu": get_prompt("tags_generation", platform="小红书", title=title, field=field, core=core),
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}
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if HAVE_LLM:
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prompt = tag_prompts.get(platform, get_prompt("tags_generation", platform=platform, title=title, field=field, core=core))
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try:
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params = get_prompt_params("tags_generation")
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tags_text = call_llm(prompt, temperature=params.get("temperature", 0.3), max_tokens=params.get("max_tokens", 500))
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tags_text = strip_thinking(tags_text)
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if tags_text:
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tags = [t.strip('#') for t in tags_text.strip().split() if t.strip('#')]
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if tags:
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return " ".join(f'<span class="tag">{t}</span>' for t in tags[:5])
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except Exception:
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pass
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tags = []
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if field:
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import re
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parts = re.split(r'[/、与和及]', field)
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for p in parts:
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p = p.strip()
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if len(p) >= 2:
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tags.append(p)
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if len(parts) == 1 and len(parts[0]) > 4:
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for i in range(0, len(parts[0]), 2):
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chunk = parts[0][i:i+2]
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if len(chunk) == 2:
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tags.append(chunk)
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tags.pop(0)
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platform_extra = {"zhihu": ["职场"], "xiaohongshu": ["生活"]}
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for t in platform_extra.get(platform, []):
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if t not in tags:
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tags.append(t)
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if not tags:
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tags = ["科技"]
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seen = set()
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return " ".join(f'<span class="tag">{t}</span>' for t in tags if t not in seen and not seen.add(t))
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def _optimize_title(self, platform: str) -> str:
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original = self.topic['title']
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if not HAVE_LLM:
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return original
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if platform == "zhihu":
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prompt = get_prompt("title_optimize_zhihu",
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title=original,
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core=self.topic.get('core_concept', ''),
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pain=self.topic.get('audience_pain', ''),
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field=self.topic.get('field', ''),
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)
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elif platform == "wechat":
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prompt = get_prompt("title_optimize_wechat",
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title=original,
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core=self.topic.get('core_concept', ''),
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)
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elif platform == "xiaohongshu":
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prompt = get_prompt("title_optimize_xhs",
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title=original,
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core=self.topic.get('core_concept', ''),
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)
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else:
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prompt = f"给以下文章改个吸引人的{platform}标题：{original}"
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try:
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if platform in ("zhihu", "wechat", "xiaohongshu"):
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params = get_prompt_params(f"title_optimize_{platform}")
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resp = call_llm(prompt, temperature=params.get("temperature", 0.8), max_tokens=params.get("max_tokens", 1500))
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else:
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resp = call_llm(prompt, temperature=0.7)
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resp = strip_thinking(resp)
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titles = []
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for line in resp.strip().split('\n'):
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line = line.strip()
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if not line:
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continue
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line = re.sub(r'^\d+[.、)\s]+', '', line)
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line = line.strip('*#- \t"\'"''"')
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# 跳过思考/建议类输出（如"不如："、"或者："、"建议方案"等）
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if re.match(r'^(不如|或者|建议|推荐|参考|方案[一二三]|第[一二三]种|以[下是]|标题[一二三]|选项)', line):
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continue
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if line:
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titles.append(line)
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if titles:
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best = titles[0][:80]
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# 如果优化后标题与原文毫无关联或过短，回退原题
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if len(best) < 4 or (len(set(best) & set(original)) < 2 and len(original) > 4):
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logger.warning(f"标题优化结果异常「{best}」，回退原文")
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return original
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logger.info(f"标题优化 [{platform}]: {best}")
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return best
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except Exception as e:
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logger.warning(f"标题优化失败: {e}")
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return original
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def generate_platform_html(self, markdown: str, platform: str) -> str:
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title = self._optimize_title(platform)
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adapted = self._adapt_for_platform(markdown, platform)
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tpl_path = TEMPLATES_DIR / f"{platform}.html"
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if tpl_path.exists():
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template = tpl_path.read_text(encoding='utf-8')
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else:
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template = "<!DOCTYPE html><html><head><meta charset='UTF-8'><title>{{TITLE}}</title><meta name='viewport' content='width=device-width'><style>body{max-width:800px;margin:0 auto;padding:20px;font-family:-apple-system,sans-serif;line-height:1.8}</style></head><body><h1>{{TITLE}}</h1><!-- CONTENT --></body></html>"
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adapted = strip_ai_preface(adapted)
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html = template.replace("{{TITLE}}", title).replace("{{DATE}}", TODAY).replace("{{GEN_TIME}}", GEN_TIME)
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html_content = _md_parser(adapted)
|
||
|
||
# 仅插入头图（每个平台一篇一张，不过度）
|
||
html_content = insert_lead_image(
|
||
html_content, platform,
|
||
title=self.topic.get('title', title),
|
||
field=self.topic.get('field', ''),
|
||
)
|
||
|
||
html = html.replace("<!-- CONTENT -->", html_content)
|
||
|
||
# 防御：清理可能在 LLM 输出中混入的 markdown 代码围栏和文件头
|
||
html = re.sub(r'^```+\w*\s*\n?', '', html)
|
||
html = re.sub(r'\n?```+\s*$', '', html)
|
||
html = html.strip()
|
||
|
||
tags_html = self._get_platform_tags(platform)
|
||
if tags_html:
|
||
html = html.replace("<!-- TAGS -->", tags_html)
|
||
else:
|
||
html = html.replace("<!-- TAGS -->", "")
|
||
|
||
return html
|
||
|
||
def save_html(self, html: str, platform: str) -> str:
|
||
try:
|
||
save_article(self.topic_id, platform, html)
|
||
logger.info(f"文章写入数据库: {platform}_{self.topic_id}")
|
||
return f"db:{platform}_{self.topic_id}"
|
||
except Exception as e:
|
||
logger.warning(f"数据库保存失败: {e}")
|
||
return ""
|
||
|
||
def mark_draft(self):
|
||
update_topic_status(self.topic_id, 'review')
|
||
logger.info(f"选题 {self.topic_id} 状态已更新为待审查（数据库）")
|
||
|
||
def run(self):
|
||
logger.info("开始撰写阶段")
|
||
markdown = self.generate_full_markdown()
|
||
results = {}
|
||
for platform in ["zhihu", "wechat", "xiaohongshu"]:
|
||
html = self.generate_platform_html(markdown, platform)
|
||
results[platform] = str(self.save_html(html, platform))
|
||
self.mark_draft()
|
||
logger.info(f"撰写完成，状态已更新为待审查")
|
||
return {"ok": True, "files": results}
|
||
|
||
def main():
|
||
import argparse
|
||
parser = argparse.ArgumentParser()
|
||
parser.add_argument('--topic-id', required=True, help='选题ID')
|
||
args = parser.parse_args()
|
||
|
||
w = Writer(args.topic_id)
|
||
result = w.run()
|
||
print(json.dumps(result, ensure_ascii=False))
|
||
sys.exit(0 if result['ok'] else 1)
|
||
|
||
if __name__ == "__main__":
|
||
main()
|