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raffle.go
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raffle.go
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package main
import (
"encoding/hex"
"github.com/mr-tron/base58"
"sort"
)
type Raffle struct {
Id string `json:"-"`
Owner string `json:"owner"`
IsMine bool `json:"-"`
Title string `json:"title" binding:"min=1,max=50"`
TicketPrice uint32 `json:"ticketPrice" binding:"min=1,max=1000000"`
FiatCurrency Currency `json:"fiatCurrency" binding:"required"`
Prizes []RafflePrize `json:"prizes" binding:"min=1,max=21"`
}
func (raffle *Raffle) GetPrizesCount() int {
var prizesCount int
for _, prize := range raffle.Prizes {
prizesCount += int(prize.Quantity)
}
return prizesCount
}
type RafflePrize struct {
Name string `json:"name" binding:"min=1,max=50"`
Quantity uint8 `json:"quantity" binding:"min=1,max=10"`
}
type RaffleTicket struct {
Number string `json:"number"`
PaymentHash string `json:"paymentHash"`
}
func raffleTicketNumber(paymentHash string) string {
if bytes, err := hex.DecodeString(paymentHash); err == nil {
return base58.Encode(bytes)[0:5]
}
return ""
}
func sortRaffles(raffles []*Raffle) []*Raffle {
sort.Slice(raffles, func(i, j int) bool {
raffleI, raffleJ := raffles[i], raffles[j]
if raffleI.IsMine == raffleJ.IsMine {
return raffleI.Title < raffleJ.Title
}
return raffleI.IsMine
})
return raffles
}