well-goknown/vendor/github.com/nbd-wtf/go-nostr/utils.go

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package nostr
import (
"cmp"
"encoding/hex"
"net/url"
"strings"
)
func IsValidRelayURL(u string) bool {
parsed, err := url.Parse(u)
if err != nil {
return false
}
if parsed.Scheme != "wss" && parsed.Scheme != "ws" {
return false
}
return true
}
func IsValid32ByteHex(thing string) bool {
if strings.ToLower(thing) != thing {
return false
}
if len(thing) != 64 {
return false
}
_, err := hex.DecodeString(thing)
return err == nil
}
func CompareEvent(a, b Event) int {
if a.CreatedAt == b.CreatedAt {
return strings.Compare(a.ID, b.ID)
}
return cmp.Compare(a.CreatedAt, b.CreatedAt)
}
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func CompareEventReverse(b, a Event) int {
if a.CreatedAt == b.CreatedAt {
return strings.Compare(a.ID, b.ID)
}
return cmp.Compare(a.CreatedAt, b.CreatedAt)
}
func CompareEventPtr(a, b *Event) int {
if a == nil {
if b == nil {
return 0
} else {
return -1
}
} else if b == nil {
return 1
}
if a.CreatedAt == b.CreatedAt {
return strings.Compare(a.ID, b.ID)
}
return cmp.Compare(a.CreatedAt, b.CreatedAt)
}
func CompareEventPtrReverse(b, a *Event) int {
if a == nil {
if b == nil {
return 0
} else {
return -1
}
} else if b == nil {
return 1
}
if a.CreatedAt == b.CreatedAt {
return strings.Compare(a.ID, b.ID)
}
return cmp.Compare(a.CreatedAt, b.CreatedAt)
}