package rest import ( "fmt" "net/http" "strings" "github.com/gorilla/mux" "github.com/cosmos/cosmos-sdk/client/context" sdk "github.com/cosmos/cosmos-sdk/types" "github.com/cosmos/cosmos-sdk/types/rest" "github.com/kava-labs/kava/x/auction/types" ) const restAuctionID = "auction-id" func registerQueryRoutes(cliCtx context.CLIContext, r *mux.Router) { r.HandleFunc(fmt.Sprintf("/%s/auctions", types.ModuleName), queryAuctionsHandlerFn(cliCtx)).Methods("GET") r.HandleFunc(fmt.Sprintf("/%s/auctions/{%s}", types.ModuleName, restAuctionID), queryAuctionHandlerFn(cliCtx)).Methods("GET") r.HandleFunc(fmt.Sprintf("/%s/parameters", types.ModuleName), getParamsHandlerFn(cliCtx)).Methods("GET") } func queryAuctionHandlerFn(cliCtx context.CLIContext) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { // Parse the query height cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } // Prepare params for querier vars := mux.Vars(r) if len(vars[restAuctionID]) == 0 { err := fmt.Errorf("%s required but not specified", restAuctionID) rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } auctionID, ok := rest.ParseUint64OrReturnBadRequest(w, vars[restAuctionID]) if !ok { return } bz, err := cliCtx.Codec.MarshalJSON(types.QueryAuctionParams{AuctionID: auctionID}) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } // Query res, height, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", types.ModuleName, types.QueryGetAuction), bz) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } // Decode and return results cliCtx = cliCtx.WithHeight(height) var auction types.Auction err = cliCtx.Codec.UnmarshalJSON(res, &auction) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } auctionWithPhase := types.NewAuctionWithPhase(auction) rest.PostProcessResponse(w, cliCtx, cliCtx.Codec.MustMarshalJSON(auctionWithPhase)) } } func queryAuctionsHandlerFn(cliCtx context.CLIContext) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { _, page, limit, err := rest.ParseHTTPArgsWithLimit(r, 0) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } // Parse the query height cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } var auctionType string var auctionDenom string var auctionPhase string if x := r.URL.Query().Get(RestType); len(x) != 0 { auctionType = strings.ToLower(strings.TrimSpace(x)) if auctionType != types.CollateralAuctionType && auctionType != types.SurplusAuctionType && auctionType != types.DebtAuctionType { rest.WriteErrorResponse(w, http.StatusBadRequest, fmt.Sprintf("invalid auction type %s", x)) return } } if x := r.URL.Query().Get(RestDenom); len(x) != 0 { auctionDenom = strings.TrimSpace(x) err := sdk.ValidateDenom(auctionDenom) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } } if x := r.URL.Query().Get(RestPhase); len(x) != 0 { auctionPhase = strings.ToLower(strings.TrimSpace(x)) if auctionType != types.CollateralAuctionType && len(auctionType) > 0 { rest.WriteErrorResponse(w, http.StatusBadRequest, "cannot apply phase flag to non-collateral auction type") return } if auctionPhase != types.ForwardAuctionPhase && auctionPhase != types.ReverseAuctionPhase { rest.WriteErrorResponse(w, http.StatusBadRequest, fmt.Sprintf("invalid auction phase %s", x)) return } } params := types.NewQueryAllAuctionParams(page, limit, auctionType, auctionDenom, auctionPhase) bz, err := cliCtx.Codec.MarshalJSON(params) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error()) return } route := fmt.Sprintf("custom/%s/%s", types.ModuleName, types.QueryGetAuctions) res, height, err := cliCtx.QueryWithData(route, bz) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } cliCtx = cliCtx.WithHeight(height) // Unmarshal to Auction and remarshal as AuctionWithPhase var auctions types.Auctions err = cliCtx.Codec.UnmarshalJSON(res, &auctions) if err != nil { rest.WriteErrorResponse(w, http.StatusNotFound, err.Error()) return } auctionsWithPhase := []types.AuctionWithPhase{} // using empty slice so json returns [] instead of null when there's no auctions for _, a := range auctions { auctionsWithPhase = append(auctionsWithPhase, types.NewAuctionWithPhase(a)) } rest.PostProcessResponse(w, cliCtx, cliCtx.Codec.MustMarshalJSON(auctionsWithPhase)) } } func getParamsHandlerFn(cliCtx context.CLIContext) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { // Parse the query height cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } // Get the params res, height, err := cliCtx.QueryWithData(fmt.Sprintf("custom/%s/%s", types.ModuleName, types.QueryGetParams), nil) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } // Decode and return results cliCtx = cliCtx.WithHeight(height) rest.PostProcessResponse(w, cliCtx, res) } }