/**
 * 药物管理辅助函数
 */

import type { Medication, MedicationDisplayItem, MedicationRecord } from '@/types/medication';

/**
 * 将药物和服药记录转换为展示项
 * @param medication 药物信息
 * @param record 服药记录
 * @param imageMap 图片映射（可选）
 * @returns 展示项
 */
export function convertToDisplayItem(
  medication: Medication,
  record: MedicationRecord,
  imageMap?: Record<string, any>
): MedicationDisplayItem {
  // 格式化剂量字符串
  const dosage = `${medication.dosageValue} ${medication.dosageUnit}`;
  
  // 提取时间（HH:mm格式）
  const scheduledTime = record.scheduledTime.split('T')[1]?.substring(0, 5) || '00:00';
  
  // 频率描述
  const frequency = medication.repeatPattern === 'daily' ? '每日' : '自定义';
  
  return {
    id: record.id,
    name: medication.name,
    dosage,
    scheduledTime,
    frequency,
    status: record.status,
    image: imageMap?.[medication.form] || null,
    recordId: record.id,
    medicationId: medication.id,
  };
}

/**
 * 批量转换药物记录为展示项
 * @param records 服药记录列表
 * @param medications 药物列表
 * @param imageMap 图片映射（可选）
 * @returns 展示项列表
 */
export function convertRecordsToDisplayItems(
  records: MedicationRecord[],
  medications: Medication[],
  imageMap?: Record<string, any>
): MedicationDisplayItem[] {
  const medicationMap = new Map<string, Medication>();
  medications.forEach((med) => medicationMap.set(med.id, med));

  return records
    .map((record) => {
      const medication = record.medication || medicationMap.get(record.medicationId);
      if (!medication) return null;
      return convertToDisplayItem(medication, record, imageMap);
    })
    .filter((item): item is MedicationDisplayItem => item !== null);
}

/**
 * 格式化剂量字符串
 * @param value 剂量值
 * @param unit 剂量单位
 * @returns 格式化后的字符串
 */
export function formatDosage(value: number, unit: string): string {
  return `${value} ${unit}`;
}

/**
 * 根据剂型获取描述
 * @param form 剂型
 * @returns 描述文本
 */
export function getMedicationFormLabel(form: string): string {
  const formLabels: Record<string, string> = {
    capsule: '胶囊',
    pill: '药片',
    injection: '注射',
    spray: '喷雾',
    drop: '滴剂',
    syrup: '糖浆',
    other: '其他',
  };
  return formLabels[form] || '其他';
}