Yuzhiran Dev
454 lines
19 KiB
Python
454 lines
19 KiB
Python
#!/usr/bin/env python3
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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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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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PLATFORM_CONFIG = {
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"zhihu": {
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"max_chars": 3000,
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"style": "深度长文分析",
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},
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"wechat": {
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"max_chars": 1500,
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"style": "亲切口语化",
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},
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"xiaohongshu": {
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"max_chars": 800,
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"style": "图文笔记，emoji+标签",
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},
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}
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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": ""}
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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": 2, "title": line[3:].strip(), "content": ""}
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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": ""}
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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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def _expand_section(self, section: Dict) -> str:
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content = section.get('content', '').strip()
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if len(content) > 200:
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return content
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if HAVE_LLM and len(content) < 150:
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logger.info(f"使用 LLM 扩写章节: {section['title']}")
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prompt = f"""你是一个真人写作者+行业观察者，正在写一篇关于「{self.topic['title']}」的文章。现在写「{section['title']}」这一节。
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⚠️ 今天日期：{datetime.datetime.now().strftime('%Y年%m月%d日')}。当前年份：{datetime.datetime.now().year}年。
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笔记要点：
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{content}
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要求（逐条对照，每一条都不能跳过）：
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### 热点与时效
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- **必须引用{datetime.datetime.now().year-1}-{datetime.datetime.now().year}年最新数据/事件/政策/行业报告**，禁用一切过时数据
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- 体现当前国内外正在讨论什么、最新的趋势变化
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- 每个论点必须配一个真实发生的最新案例（附数据来源），严禁使用虚构数据
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- 写作前先确认：这个数据和案例是否是最近{datetime.datetime.now().year-1}-{datetime.datetime.now().year}年的？
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### 独特观点
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- 有自己的判断和立场，拒绝"车轱辘话"和"正确废话"
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- 至少提供一个"大多数人没想到"的角度
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- 宁可尖锐，也不要平庸
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### 价值
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- 回答读者一个具体问题或解决一个困惑
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- 每段回答一个"所以呢？"——读者看完能带走什么
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- 结束时读者要有「学到了+想转发」的感觉
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### 真人感
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- 用「你」或「我们」视角，不要用「我」
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- 像人在自然说话，不是AI组装文字
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- 避免「首先」「其次」「总的来说」「综上所述」「值得注意的是」
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- 段落短，2-4句一段，节奏有变化
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- 适当用反问或口语化表达
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### SEO
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- 自然融入1-2个目标搜索词，不生硬堆砌
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- 第一句包含核心关键词
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### 专业与简洁
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- 语言精准，不注水，不为了字数凑内容
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- 200-400字，写到点子上就停
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### 平台推荐友好
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- 节奏不能平，要有起承转合
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- 结尾要让人有点赞/收藏/转发的冲动
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直接输出段落正文。"""
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try:
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expanded = call_llm(prompt, temperature=0.6, max_tokens=1500)
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if expanded and len(expanded.strip()) > len(content):
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return expanded.strip()
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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
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lines = [l.strip() for l in content.split('\n') if l.strip()]
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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.lstrip('- *').strip()
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if text:
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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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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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return ' '.join(sentences)
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return content
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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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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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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 == "xiaohongshu":
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result = []
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char_count = 0
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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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if line.startswith('## '):
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line = f"## ✨ {line[3:]}"
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elif line.startswith('### '):
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line = f"### 💡 {line[4:]}"
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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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if adapted.count('#') == 0:
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adapted = f"# {self.topic['title']}\n\n{adapted}"
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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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line = line.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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if len(adapted) > max_c:
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adapted = adapted[:max_c]
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last = max(adapted.rfind('。'), adapted.rfind('\n'), adapted.rfind('！'))
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if last > max_c // 2:
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adapted = adapted[:last + 1]
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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": f"为以下文章生成知乎标签（3-5个）。标题：{title} 领域：{field} 核心观点：{core} 每个2-4字。直接输出标签，空格分隔。不要输出思考过程。",
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"wechat": f"为以下文章生成公众号标签（3-5个）。标题：{title} 领域：{field} 核心观点：{core} 每个2-4字。直接输出标签，空格分隔。不要输出思考过程。",
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"xiaohongshu": f"为以下文章生成小红书标签（3-5个）。标题：{title} 领域：{field} 核心观点：{core} 每个2-4字。直接输出标签，空格分隔。不要输出思考过程。",
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}
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if HAVE_LLM:
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prompt = tag_prompts.get(platform, f"根据文章信息生成适合{platform}的标签。标题：{title} 领域：{field} 核心观点：{core} 直接输出标签，空格分隔。")
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try:
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tags_text = call_llm(prompt, temperature=0.2, max_tokens=1000)
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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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title_templates = {
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"zhihu": f"""你是一个知乎用户，在给自己的深度回答起高点击率标题。
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原文标题：{original}
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领域：{self.topic.get('field', '')}
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要求：
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- 有信息量：一看就知道能解决什么问题
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- 含知乎搜索关键词（SEO），利用知乎搜索联想热词
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- 带数字或对比最好（「3个方法」「从…到…」）
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- 20字以内
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- 参考知乎真实高赞标题风格，不要套路句式
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- 避免「如何…」废句式、「XXX指南/手册/全攻略」
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- 有观点、有态度，不是中性描述
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- 直击目标读者痛点或好奇心
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- 直接输出3个标题选项，每行一个，不要输出思考过程
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生成 3 个选项，每行一个。""",
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"wechat": f"""你是一个公众号作者，在给可能10万+的文章起标题。
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原文标题：{original}
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领域：{self.topic.get('field', '')}
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要求：
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- 制造好奇心和点击欲，让人觉得不点开会错过
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- 包含微信搜索关键词（微信SEO），利用搜一搜热门词
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- 口语化，不要书面腔
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- 不要感叹号堆砌，不要「重磅/震惊/紧急」
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- 字数15-25字最佳
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- 有情绪感召力：共鸣/好奇/焦虑/期待
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- 参考近期10万+标题的语气节奏
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- 直接输出3个标题选项，每行一个，不要输出思考过程
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生成 3 个选项，每行一个。""",
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"xiaohongshu": f"""你是一个小红书用户，在给笔记起能上热门推荐的标题。
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原文标题：{original}
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领域：{self.topic.get('field', '')}
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要求：
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- 20字以内
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- 采用爆款模式：数字+结果/痛点+方案/反常识观点/对比式
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- 包含小红书搜索关键词（SEO），利用搜索下拉热词
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- 带1个精准emoji点缀，不要三个起堆
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- 有场景感/结果感/获得感
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- 不要「必看/收藏/码住」
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- 像真实用户写的，不是运营写的
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- 参考小红书搜索热榜标题风格
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- 直接输出3个标题选项，每行一个，不要输出思考过程
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生成 3 个选项，每行一个。""",
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}
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prompt = title_templates.get(platform, 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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resp = call_llm(prompt, temperature=0.7, max_tokens=1000)
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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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if line:
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titles.append(line)
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if titles:
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logger.info(f"标题优化 [{platform}]: {titles[0][:50]}...")
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return titles[0]
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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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html = template.replace("{{TITLE}}", title).replace("{{DATE}}", TODAY).replace("{{GEN_TIME}}", GEN_TIME)
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html_content = _md_parser(adapted)
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# WeChat: insert topic-relevant image at start of body
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if platform == "wechat":
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import base64
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topic_title = self.topic.get('title', title)
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topic_field = self.topic.get('field', '')
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safe_title = topic_title.replace('&', '&').replace('<', '<').replace('>', '>').replace('"', '"').replace("'", ''')
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safe_field = topic_field.replace('&', '&').replace('<', '<').replace('>', '>')
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lines = []
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chars_per_line = 24
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for i in range(0, len(safe_title), chars_per_line):
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lines.append(safe_title[i:i+chars_per_line])
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if not lines:
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lines = ['配图']
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line_y = 220 - (len(lines) - 1) * 20
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title_texts = ''.join(f'<text x="540" y="{line_y + i*55}" font-size="36" fill="#1a1a1a" font-weight="bold">{l}</text>' for i, l in enumerate(lines))
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field_text = f'<text x="540" y="{line_y + len(lines)*55 + 30}" font-size="20" fill="#98a2b3">{safe_field}</text>' if safe_field else ''
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img_svg = f'''<svg xmlns="http://www.w3.org/2000/svg" width="1080" height="600" viewBox="0 0 1080 600" style="width:100%;max-width:1080px;border-radius:8px;background:linear-gradient(135deg,#f0f4ff,#e8f0fe)">
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<rect width="1080" height="600" fill="url(#bg)"/>
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<defs><linearGradient id="bg" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:#f0f4ff"/><stop offset="100%" style="stop-color:#e8f0fe"/></linearGradient></defs>
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<g transform="translate(540,300)" text-anchor="middle" font-family="-apple-system,BlinkMacSystemFont,Helvetica Neue,PingFang SC,Microsoft YaHei,sans-serif">
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<rect x="-60" y="-100" width="120" height="4" rx="2" fill="#409eff"/>
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{title_texts}
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{field_text}
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<text y="100" font-size="14" fill="#c0c4cc">宇之然 · 配图（可替换）</text>
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</g></svg>'''
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img_b64 = 'data:image/svg+xml;base64,' + base64.b64encode(img_svg.encode('utf-8')).decode('ascii')
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img_tag = f'<p><img src="{img_b64}" alt="{safe_title}" style="width:100%;max-width:1080px;border-radius:8px;"></p>\n'
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h1_end = html_content.find('</h1>')
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if h1_end != -1:
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html_content = html_content[:h1_end + 5] + '\n' + img_tag + html_content[h1_end + 5:]
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else:
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html_content = img_tag + html_content
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html = html.replace("<!-- CONTENT -->", html_content)
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tags_html = self._get_platform_tags(platform)
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if tags_html:
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html = html.replace("<!-- TAGS -->", tags_html)
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else:
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html = html.replace("<!-- TAGS -->", "")
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return html
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def save_html(self, html: str, platform: str) -> str:
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try:
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save_article(self.topic_id, platform, html)
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logger.info(f"文章写入数据库: {platform}_{self.topic_id}")
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return f"db:{platform}_{self.topic_id}"
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except Exception as e:
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logger.warning(f"数据库保存失败: {e}")
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return ""
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def mark_draft(self):
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update_topic_status(self.topic_id, 'review')
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logger.info(f"选题 {self.topic_id} 状态已更新为待审查（数据库）")
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def run(self):
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logger.info("开始撰写阶段")
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markdown = self.generate_full_markdown()
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results = {}
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for platform in ["zhihu", "wechat", "xiaohongshu"]:
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html = self.generate_platform_html(markdown, platform)
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results[platform] = str(self.save_html(html, platform))
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self.mark_draft()
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logger.info(f"撰写完成，状态已更新为待审查")
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return {"ok": True, "files": results}
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def main():
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import argparse
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parser = argparse.ArgumentParser()
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parser.add_argument('--topic-id', required=True, help='选题ID')
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args = parser.parse_args()
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w = Writer(args.topic_id)
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result = w.run()
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print(json.dumps(result, ensure_ascii=False))
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sys.exit(0 if result['ok'] else 1)
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if __name__ == "__main__":
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main()
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