// 所有导入放在顶部
import API from '@/util/http.js'
import { ref } from 'vue'
import i18n from '@/components/locales'

// 声明变量
const messageList1 = ref()

/**
 * 格式化时间为相对时间
 * @param {String} timeStr - 原始时间字符串
 * @returns {String} 格式化后的时间
 */
function formatTime(timeStr) {
    // 函数逻辑不变...
    const now = new Date();
    const msgTime = new Date(timeStr);
    const diffMs = now - msgTime;
    const diffMins = Math.floor(diffMs / (1000 * 60));
    const diffHours = Math.floor(diffMins / 60);
    const diffDays = Math.floor(diffHours / 24);

    if (diffHours < 1) {
        return `${diffMins}分钟前`
    } else if (diffDays < 1) {
        return `${diffHours}小时前`
    } else if (diffDays === 1) {
        return '昨天'
    } else {
        return `${msgTime.getFullYear()}-${String(msgTime.getMonth() + 1).padStart(2, '0')}-${String(msgTime.getDate()).padStart(2, '0')}`
    }
}


/**
 * 按日期分组消息（返回扁平化列表，每条消息包含group字段）
 * @param {Array} messages - 原始消息列表
 * @returns {Array} 带分组信息的消息列表
 */
export function groupMessages(messages) {
    const today = new Date()
    today.setHours(0, 0, 0, 0)
    const yesterday = new Date(today)
    yesterday.setDate(yesterday.getDate() - 1)

    const t = i18n.global.t

    // 直接返回处理后的消息数组（每条消息带group字段）
    return messages
        .filter(msg => msg.flag !== 1)
        .map(msg => {

            const msgTime = new Date(msg.czTime)
            const formattedTime = formatTime(msg.czTime)
            let groupKey

            if (msgTime >= today) {
                groupKey = 'today'
            } else if (msgTime >= yesterday) {
                groupKey = 'yesterday'
            } else {
                groupKey = 'earlier'
            }

            const group = t(`home.messageGroups.${groupKey}`)

            return { ...msg, czTime: formattedTime, groupKey, group }
        });
}

// // 异步获取消息
// export const newMessageRes = await API({
//     url: '/getMessage',
//     method: 'POST',
//     data: {}
// });