export type SkillQualityNodeKey =
  | "trigger"
  | "inputs"
  | "steps"
  | "output"
  | "constraints";

export type SkillNodeQuality = {
  complete: boolean;
  missing: string[];
};

function normalizedContent(content: string) {
  return content.replace(/\s+/g, " ").trim();
}

function hasOrderedSteps(content: string) {
  const numberedSteps =
    content.match(/(?:^|[\n；;。])\s*(?:步骤\s*)?\d+[.、):：]/g)?.length ?? 0;
  const sequenceMarkers = ["先", "再", "然后", "接着", "最后", "最终"].filter(
    (marker) => content.includes(marker),
  ).length;
  const actionSegments = content
    .split(/[\n；;。]+/)
    .filter((segment) =>
      /(?:检查|识别|提取|分析|整理|比较|判断|生成|输出|复核|验证|标记)/.test(
        segment,
      ),
    ).length;

  return numberedSteps >= 2 || sequenceMarkers >= 2 || actionSegments >= 2;
}

export function evaluateSkillNodeQuality(
  nodeKey: SkillQualityNodeKey,
  content: string,
): SkillNodeQuality {
  const normalized = normalizedContent(content);
  const missing: string[] = [];

  if (normalized.length < 8) {
    missing.push("内容过短，尚未形成可执行规范");
    return { complete: false, missing };
  }

  switch (nodeKey) {
    case "trigger":
      if (
        !/(?:当|如果|遇到|用户|场景|适用|触发|不处理|不适用|请求)/.test(
          normalized,
        )
      ) {
        missing.push("需要说明何时触发或适用场景");
      }
      break;
    case "inputs":
      if (
        !/(?:必填|可选|输入|参数|提供|原文|材料|目标|字段|默认|缺失)/.test(
          normalized,
        )
      ) {
        missing.push("需要列明执行所需的输入信息");
      }
      break;
    case "steps":
      if (!hasOrderedSteps(normalized)) {
        missing.push("需要至少两个有明确顺序的执行动作");
      }
      break;
    case "output":
      if (
        !/(?:输出|结果|格式|结构|标题|字段|表格|Markdown|JSON|列表|篇幅|语气|字数|包含)/i.test(
          normalized,
        )
      ) {
        missing.push("需要明确结果结构、字段或格式");
      }
      break;
    case "constraints":
      if (
        !/(?:不得|不能|禁止|必须|至少|至多|缺少|不足|失败|异常|验收|测试|反例|确保|待确认|质量)/.test(
          normalized,
        )
      ) {
        missing.push("需要至少一条约束、质量标准或验收条件");
      }
      break;
  }

  return { complete: missing.length === 0, missing };
}

export function getSkillNodeQualityIssues(
  nodes: Array<{
    key: SkillQualityNodeKey;
    title: string;
    content: string;
  }>,
) {
  return nodes.flatMap((node) => {
    const quality = evaluateSkillNodeQuality(node.key, node.content);
    return quality.missing.map((missing) => `${node.title}：${missing}`);
  });
}

export function skillNodeQualityErrorMessage(issues: string[]) {
  return `Skill 节点尚未达到可发布标准。需补充：${issues.join("；")}`;
}