vspd/webapi/helpers.go
2020-05-21 07:59:51 +01:00

44 lines
1.1 KiB
Go

package webapi
import (
"fmt"
"github.com/decred/dcrd/chaincfg/v3"
)
func currentVoteVersion(params *chaincfg.Params) uint32 {
var latestVersion uint32
for version := range params.Deployments {
if latestVersion < version {
latestVersion = version
}
}
return latestVersion
}
// isValidVoteChoices returns an error if provided vote choices are not valid for
// the most recent agendas.
func isValidVoteChoices(params *chaincfg.Params, voteVersion uint32, voteChoices map[string]string) error {
agendaLoop:
for agenda, choice := range voteChoices {
// Does the agenda exist?
for _, v := range params.Deployments[voteVersion] {
if v.Vote.Id == agenda {
// Agenda exists - does the vote choice exist?
for _, c := range v.Vote.Choices {
if c.Id == choice {
// Valid agenda and choice combo! Check the next one...
continue agendaLoop
}
}
return fmt.Errorf("choice %q not found for agenda %q", choice, agenda)
}
}
return fmt.Errorf("agenda %q not found for vote version %d", agenda, voteVersion)
}
return nil
}