/
referendumproposals.go
61 lines (43 loc) · 1.38 KB
/
referendumproposals.go
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package system
import (
"encoding/json"
"log"
"net/http"
"github.com/ChorusOne/Icarus/blockchain"
"github.com/ChorusOne/Icarus/contract"
"github.com/ChorusOne/Icarus/rest/types"
"github.com/ethereum/go-ethereum/rpc"
"math/big"
)
// ReferendumProposalsData returns details of all referendum proposals at the given block height
func ReferendumProposalsData(rc *rpc.Client) types.Handler {
return func(w http.ResponseWriter, r *http.Request) {
latest, err := blockchain.GetLatestBlockNumber(rc)
if err != nil {
log.Print(err)
} else {
heightQuery := r.URL.Query().Get("block_height")
height := big.NewInt(0)
var success bool
height, success = height.SetString(heightQuery, 10)
//If height is invalid, return details for latest block number
if !success ||
height.Cmp(big.NewInt(0)) < 0 ||
height.Cmp(latest) > 0 {
height = latest
}
referendumProposalDetails := ReferendumProposalsWithDetails(height)
w.Header().Set("Content-Type", "application/json")
if err := json.NewEncoder(w).Encode(referendumProposalDetails); err != nil {
log.Println(err)
}
}
}
}
func ReferendumProposalsWithDetails(blockNumber *big.Int) []*contract.DetailedProposal {
detailedReferendumProposals, err := contract.GetDetailedReferendumProposals(blockNumber)
if err != nil {
return []*contract.DetailedProposal{}
}
return detailedReferendumProposals
}