package handlers

import (
	"platform/web/auth"
	"platform/web/core"
	q "platform/web/queries"
	"time"

	"github.com/gofiber/fiber/v2"
)

// region ListBill

type ListBillReq struct {
	core.PageReq
	BillNo       *string    `json:"bill_no"`
	Type         *int       `json:"type"`
	CreateAfter  *time.Time `json:"create_after"`
	CreateBefore *time.Time `json:"create_before"`
}

// ListBill 获取账单列表
func ListBill(c *fiber.Ctx) error {
	// 检查权限
	authCtx, err := auth.GetAuthCtx(c).PermitUser()
	if err != nil {
		return err
	}

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

	// 查询账单列表
	do := q.Bill.
		Where(q.Bill.UserID.Eq(authCtx.User.ID))

	if req.Type != nil {
		do.Where(q.Bill.Type.Eq(int(*req.Type)))
	}
	if req.CreateAfter != nil {
		do.Where(q.Bill.CreatedAt.Gte(*req.CreateAfter))
	}
	if req.CreateBefore != nil {
		do.Where(q.Bill.CreatedAt.Lte(*req.CreateBefore))
	}
	if req.BillNo != nil && *req.BillNo != "" {
		do.Where(q.Bill.BillNo.Eq(*req.BillNo))
	}

	bills, err := q.Bill.Where(do).
		Preload(q.Bill.Resource, q.Bill.Trade, q.Bill.Refund).
		Preload(q.Bill.Resource.Short, q.Bill.Resource.Long).
		Order(q.Bill.CreatedAt.Desc()).
		Offset(req.GetOffset()).
		Limit(req.GetLimit()).
		Find()
	if err != nil {
		return err
	}

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

	return c.JSON(core.PageResp{
		Total: int(total),
		Page:  req.GetPage(),
		Size:  req.GetSize(),
		List:  bills,
	})
}

// endregion