import { tool } from "langchain"

/**
 * 特定日期日历工具
 * 提供指定日期的日历信息
 */
export const getLunarCalendarInfoTool = tool(
  async ({ year, month, day }) => {
    try {
      const date = new Date(year, month - 1, day)
      
      if (isNaN(date.getTime())) {
        return JSON.stringify({ error: '无效的日期' }, null, 2)
      }
      
      // 获取农历信息
      const lunarInfo = {}
      
      return JSON.stringify(lunarInfo, null, 2)
    } catch (error) {
      console.error('Error in date calendar tool:', error)
      return JSON.stringify({ error: error.message }, null, 2)
    }
  },
  {
    name: "get_lunar_calendar_info",
    description: "获取指定日期的日历信息，包括农历信息、老黄历、当年生肖、今日宜忌、喜神方位、财神方位、今日节气、今日节日等",
    schema: {
      type: "object",
      properties: {
        year: {
          type: "number",
          description: "年份",
          minimum: 1900,
          maximum: 2100
        },
        month: {
          type: "number",
          description: "月份",
          minimum: 1,
          maximum: 12
        },
        day: {
          type: "number",
          description: "日期",
          minimum: 1,
          maximum: 31
        }
      },
      required: ["year", "month", "day"]
    }
  }
)