package notification

import (
	"context"
	"time"

	"bdrp-server/common/xerr"

	"github.com/pkg/errors"

	"bdrp-server/app/main/api/internal/svc"
	"bdrp-server/app/main/api/internal/types"
	"bdrp-server/app/main/model"

	"github.com/zeromicro/go-zero/core/logx"
)

type GetNotificationsLogic struct {
	logx.Logger
	ctx    context.Context
	svcCtx *svc.ServiceContext
}

func NewGetNotificationsLogic(ctx context.Context, svcCtx *svc.ServiceContext) *GetNotificationsLogic {
	return &GetNotificationsLogic{
		Logger: logx.WithContext(ctx),
		ctx:    ctx,
		svcCtx: svcCtx,
	}
}

func (l *GetNotificationsLogic) GetNotifications() (resp *types.GetNotificationsResp, err error) {
	// 获取今天的日期
	now := time.Now()

	// 获取开始和结束日期的时间戳
	todayStart := now.Format("2006-01-02") + " 00:00:00"
	todayEnd := now.Format("2006-01-02") + " 23:59:59"

	// 构建查询条件（与后台管理一致：status 1=启用 0=禁用；库中为整型，不能用字符串 "active"）
	builder := l.svcCtx.GlobalNotificationsModel.SelectBuilder().
		Where("status = ?", 1).
		Where("(start_date IS NULL OR start_date <= ?)", todayEnd). // start_date 是 NULL 或者小于等于今天结束时间
		Where("(end_date IS NULL OR end_date >= ?)", todayStart)   // end_date 是 NULL 或者大于等于今天开始时间

	notificationsModelList, findErr := l.svcCtx.GlobalNotificationsModel.FindAll(l.ctx, builder, "")
	if findErr != nil {
		return nil, errors.Wrapf(xerr.NewErrCode(xerr.DB_ERROR), "全局通知, 查找通知失败, err:%+v", findErr)
	}

	notifications := toPublicNotifications(notificationsModelList)

	return &types.GetNotificationsResp{
		Notifications: notifications,
		Total:         int64(len(notifications)),
	}, nil
}

func toPublicNotifications(list []*model.GlobalNotifications) []types.Notification {
	out := make([]types.Notification, 0, len(list))
	for _, m := range list {
		n := types.Notification{
			Title:            m.Title,
			Content:          m.Content,
			NotificationPage: m.NotificationPage,
			StartTime:        m.StartTime,
			EndTime:          m.EndTime,
		}
		if m.StartDate.Valid {
			n.StartDate = m.StartDate.Time.Format("2006-01-02")
		}
		if m.EndDate.Valid {
			n.EndDate = m.EndDate.Time.Format("2006-01-02")
		}
		out = append(out, n)
	}
	return out
}