319 lines
10 KiB
Python
319 lines
10 KiB
Python
"""内容规则校验服务"""
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import re
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from dataclasses import dataclass
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from typing import Optional
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from app.services.distribution.platform_rules import PLATFORM_RULES
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@dataclass
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class ValidationIssue:
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"""校验问题"""
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severity: str # high, medium, low
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message: str
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category: str
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@dataclass
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class ValidationResult:
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"""校验结果"""
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is_valid: bool
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score: int
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issues: list # list of ValidationIssue
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passed: list # list of str
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@dataclass
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class AI_Pattern:
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"""AI写作特征"""
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pattern: str
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type: str # banned_word, banned_structure
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severity: str # medium, high
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class RuleValidator:
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"""内容规则校验器"""
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def validate(self, content: str, title: str, platform: str) -> ValidationResult:
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"""
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校验内容是否符合平台规则
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Args:
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content: 内容正文
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title: 标题
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platform: 平台标识
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Returns:
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ValidationResult: 校验结果
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"""
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rules = PLATFORM_RULES.get(platform)
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if not rules:
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raise ValueError(f"不支持的平台: {platform}")
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issues: list[ValidationIssue] = []
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passed: list[str] = []
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# 标题长度校验
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title_len = len(title)
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title_rules = rules.get("title_rules", {})
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max_title = title_rules.get("max_length", 30)
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min_title = title_rules.get("min_length", 5)
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if title_len > max_title:
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issues.append(ValidationIssue(
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"high",
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f"标题长度 {title_len} 超过限制 {max_title}",
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"title_length"
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))
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elif title_len < min_title:
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issues.append(ValidationIssue(
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"medium",
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f"标题长度 {title_len} 低于最低要求 {min_title}",
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"title_length"
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))
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else:
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passed.append(f"标题长度合规（{title_len}/{max_title}）")
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# 内容长度校验
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content_len = len(content)
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content_rules = rules.get("content_length", {})
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max_content = content_rules.get("max", 20000)
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min_content = content_rules.get("min", 0)
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if content_len > max_content:
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issues.append(ValidationIssue(
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"high",
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f"内容长度 {content_len} 超过限制 {max_content}",
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"content_length"
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))
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elif min_content > 0 and content_len < min_content:
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issues.append(ValidationIssue(
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"medium",
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f"内容长度 {content_len} 低于建议最低 {min_content}",
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"content_length"
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))
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else:
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passed.append(f"内容长度合规（{content_len}/{max_content}）")
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# AI模式检测
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ai_sensitivity = rules.get("ai_sensitivity", {})
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if ai_sensitivity.get("humanization_required", False):
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ai_results = self.detect_ai_patterns(content, platform)
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for result in ai_results:
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issues.append(ValidationIssue(
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"medium",
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f"发现AI写作特征: {result.pattern}",
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"ai_pattern"
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))
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# 平台特定规则
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platform_issues, platform_passed = self._validate_platform_specific(content, title, platform)
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issues.extend(platform_issues)
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passed.extend(platform_passed)
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# 计算分数
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penalty = sum(
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15 if i.severity == "high" else 8 if i.severity == "medium" else 3
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for i in issues
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)
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score = max(0, 100 - penalty)
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# 判断是否有效（无high级别问题）
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is_valid = all(i.severity != "high" for i in issues)
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return ValidationResult(is_valid, score, issues, passed)
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def detect_ai_patterns(self, content: str, platform: str) -> list[AI_Pattern]:
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"""
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检测AI写作模式
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Args:
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content: 内容正文
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platform: 平台标识
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Returns:
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list[AI_Pattern]: 检测到的AI特征列表
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"""
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rules = PLATFORM_RULES.get(platform)
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if not rules:
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return []
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results: list[AI_Pattern] = []
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ai_config = rules.get("ai_sensitivity", {})
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banned_patterns = ai_config.get("banned_patterns", [])
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banned_structures = ai_config.get("banned_structures", [])
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# 检测禁用词汇
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for pattern in banned_patterns:
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if pattern in content:
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results.append(AI_Pattern(pattern, "banned_word", "medium"))
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# 检测禁用结构
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for structure in banned_structures:
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if re.search(structure, content):
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results.append(AI_Pattern(structure, "banned_structure", "medium"))
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break
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return results
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def get_optimization_tips(self, platform: str) -> list[str]:
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"""
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获取平台优化建议
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Args:
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platform: 平台标识
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Returns:
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list[str]: 优化建议列表
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"""
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rules = PLATFORM_RULES.get(platform)
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if not rules:
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return []
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return rules.get("seo_tips", [])
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def _validate_platform_specific(
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self, content: str, title: str, platform: str
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) -> tuple:
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"""平台特定规则校验"""
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issues: list[ValidationIssue] = []
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passed: list[str] = []
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# 诱导分享/关注检测
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inducing_patterns = re.compile(
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r"(转发|分享|关注|点赞|收藏).{0,4}(领|获|得|拿|解锁|免费)",
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re.IGNORECASE,
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)
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# 连续特殊符号
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consecutive_symbols = re.compile(r"[!！?？]{3,}")
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# 外部链接（排除公众号和小程序链接）
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external_link = re.compile(
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r"https?://(?!mp\.weixin\.qq\.com|wx\.qq\.com|weixin://)[^\s<>)）]+",
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re.IGNORECASE,
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)
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# 标题党词汇
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clickbait_words = {"震惊", "惊呆", "吓死", "笑死", "疯传", "刷屏", "出大事", "不敢相信"}
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# 水印检测
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watermark_patterns = re.compile(
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r"(抖音|快手|小红书|微博|B站|bilibili).*(水印|logo)",
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re.IGNORECASE,
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)
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if platform == "wechat":
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# 诱导分享/关注
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if inducing_patterns.search(title) or inducing_patterns.search(content):
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issues.append(ValidationIssue(
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"high",
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"包含诱导分享/关注语句",
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"platform_rule"
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))
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else:
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passed.append("无诱导分享/关注语句")
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# 连续特殊符号
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if consecutive_symbols.search(title):
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issues.append(ValidationIssue(
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"medium",
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"标题包含连续特殊符号",
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"title_format"
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))
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else:
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passed.append("标题无连续特殊符号")
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# 外部链接
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if external_link.search(content):
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issues.append(ValidationIssue(
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"high",
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"正文包含外部链接（仅支持公众号链接和小程序）",
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"platform_rule"
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))
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else:
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passed.append("无外部链接")
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# 营销用语检测
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marketing_words = ["购买", "下单", "优惠价", "限时折扣", "点击购买"]
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found_marketing = [w for w in marketing_words if w in content]
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if found_marketing:
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issues.append(ValidationIssue(
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"medium",
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f"疑似营销用语: {', '.join(found_marketing)}",
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"platform_rule"
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))
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else:
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passed.append("未检测到过度营销用语")
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elif platform == "zhihu":
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# 营销内容检测
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marketing_words = ["购买", "下单", "优惠价", "限时折扣", "点击购买"]
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found_marketing = [w for w in marketing_words if w in content]
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if found_marketing:
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issues.append(ValidationIssue(
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"medium",
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f"疑似营销用语: {', '.join(found_marketing)}",
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"platform_rule"
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))
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else:
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passed.append("未检测到过度营销用语")
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elif platform == "xiaohongshu":
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# 字数建议
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content_len = len(content)
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if content_len > 800:
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issues.append(ValidationIssue(
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"medium",
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f"正文建议300-800字，当前 {content_len} 字",
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"content_length"
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))
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elif content_len < 300:
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issues.append(ValidationIssue(
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"low",
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f"正文建议300-800字，当前仅 {content_len} 字",
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"content_length"
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))
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else:
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passed.append(f"正文字数适宜（{content_len}字）")
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# 其他平台引流
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cross_platform_keywords = ["微信", "公众号", "抖音号", "微博"]
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found_cross = [p for p in cross_platform_keywords if p in content]
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if found_cross:
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issues.append(ValidationIssue(
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"high",
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f"疑似其他平台引流: {', '.join(found_cross)}",
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"platform_rule"
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))
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else:
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passed.append("未检测到其他平台引流信息")
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elif platform in ("baijiahao", "toutiao"):
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# 标题党检测
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found_clickbait = clickbait_words & set(title)
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if found_clickbait:
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issues.append(ValidationIssue(
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"high",
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f"标题含标题党词汇: {', '.join(found_clickbait)}",
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"title_content"
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))
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else:
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passed.append("标题无标题党词汇")
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elif platform == "douyin":
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# 水印检测
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if watermark_patterns.search(content):
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issues.append(ValidationIssue(
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"high",
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"内容包含其他平台水印信息",
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"platform_rule"
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))
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else:
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passed.append("未检测到其他平台水印")
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return issues, passed
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# 导出单例
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validator = RuleValidator()
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