51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package rtpconn
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import (
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"crypto/rand"
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"fmt"
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"io"
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"math/big"
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"strings"
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"git.stormux.org/storm/skald/hall"
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)
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var coinSides = []string{"heads", "tails"}
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func chooseCoinSide(reader io.Reader) (string, error) {
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index, err := rand.Int(reader, big.NewInt(int64(len(coinSides))))
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if err != nil {
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return "", err
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}
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return coinSides[index.Int64()], nil
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}
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func validateCoinRequest(value any) error {
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if value == nil {
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return nil
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}
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arguments, ok := value.(string)
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if !ok || strings.TrimSpace(arguments) != "" {
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return hall.UserError("/coin does not take any arguments")
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}
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return nil
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}
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func handleCoinFlip(c *webClient, g *hall.Hall, value any) error {
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if !member("message", c.Permissions()) {
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return c.error(hall.UserError("not authorised"))
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}
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if err := validateCoinRequest(value); err != nil {
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return c.error(err)
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}
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side, err := chooseCoinSide(rand.Reader)
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if err != nil {
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return c.error(err)
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}
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announcement := fmt.Sprintf("%s flips a coin: %s.", c.Username(), side)
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if err := broadcastServerChat(g, "Coin", "coin", announcement); err != nil {
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return c.error(err)
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}
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return nil
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}
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