/**
 * v4-P3-7: 诊断报告数据置信度工具。
 *
 * 置信度等级用于指示报告基于的数据量是否充足，帮助教师判断报告可信度。
 * 提取到独立文件供 report-list 和 student-diagnostic-view 共享，避免重复定义。
 */

import type { DiagnosticReportWithDetails } from "../types"

export type ConfidenceLevel = "high" | "medium" | "low" | "insufficient"

/**
 * 根据报告数据计算置信度。
 * 简化方案：overallScore === null 表示无数据（insufficient），
 * 否则视为高置信度（high）。
 * 后续可扩展为基于 totalQuestions 等数据量字段的多级判断。
 */
export function getConfidenceLevel(report: DiagnosticReportWithDetails): ConfidenceLevel {
  if (report.overallScore === null) return "insufficient"
  return "high"
}

export const confidenceBadgeVariant: Record<
  ConfidenceLevel,
  "default" | "secondary" | "destructive" | "outline"
> = {
  high: "default",
  medium: "secondary",
  low: "destructive",
  insufficient: "outline",
}