package handlers

import (
	"github.com/gofiber/fiber/v2"
	"platform/web/auth"
	"platform/web/core"
	q "platform/web/queries"
)

// region ListAnnouncements

type ListAnnouncementsRequest struct {
	core.PageReq
}

func ListAnnouncements(c *fiber.Ctx) error {

	// 检查权限
	_, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}

	// 解析请求参数
	req := new(ListAnnouncementsRequest)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 查询公告
	do := q.Announcement.
		Where(q.Announcement.Status.Eq(1))

	list, err := q.Announcement.
		Where(do).
		Offset(req.GetOffset()).
		Limit(req.GetLimit()).
		Order(q.Announcement.CreatedAt.Desc()).
		Find()
	if err != nil {
		return err
	}

	var total int64
	if len(list) < req.GetLimit() {
		total = int64(len(list) + req.GetOffset())
	} else {
		total, err = q.Announcement.Where(do).Count()
		if err != nil {
			return err
		}
	}

	// 返回结果
	return c.JSON(core.PageResp{
		Total: int(total),
		List:  list,
		Page:  req.GetPage(),
		Size:  req.GetSize(),
	})
}

// endregion