package rest import ( "fmt" "net/http" "strings" "github.com/cosmos/cosmos-sdk/client" sdk "github.com/cosmos/cosmos-sdk/types" "github.com/cosmos/cosmos-sdk/types/rest" "github.com/gorilla/mux" "github.com/kava-labs/kava/x/auction/types" ) const restAuctionID = "auction-id" // define routes that get registered by the main application func registerQueryRoutes(cliCtx client.Context, r *mux.Router) { r.HandleFunc(fmt.Sprintf("/%s/parameters", types.ModuleName), queryParamsHandlerFn(cliCtx)).Methods("GET") r.HandleFunc(fmt.Sprintf("/%s/auctions/{%s}", types.ModuleName, restAuctionID), queryAuctionHandlerFn(cliCtx)).Methods("GET") r.HandleFunc(fmt.Sprintf("/%s/auctions", types.ModuleName), queryAuctionsHandlerFn(cliCtx)).Methods("GET") } func queryParamsHandlerFn(cliCtx client.Context) http.HandlerFunc { return func(w http.ResponseWriter, r *http.Request) { cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r) if !ok { return } 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 } cliCtx = cliCtx.WithHeight(height) rest.PostProcessResponse(w, cliCtx, res) } } func queryAuctionHandlerFn(cliCtx client.Context) 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.LegacyAmino.MarshalJSON(types.NewQueryAuctionParams(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 } // Write response cliCtx = cliCtx.WithHeight(height) rest.PostProcessResponse(w, cliCtx, res) } } func queryAuctionsHandlerFn(cliCtx client.Context) 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 auctionOwner sdk.AccAddress 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(RestOwner); len(x) != 0 { if auctionType != types.CollateralAuctionType { rest.WriteErrorResponse(w, http.StatusBadRequest, "cannot apply owner flag to non-collateral auction type") } auctionOwnerStr := strings.ToLower(strings.TrimSpace(x)) auctionOwner, err = sdk.AccAddressFromBech32(auctionOwnerStr) if err != nil { rest.WriteErrorResponse(w, http.StatusBadRequest, fmt.Sprintf("cannot parse address from auction owner %s", auctionOwnerStr)) } } 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, auctionOwner) bz, err := cliCtx.LegacyAmino.MarshalJSON(params) 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.QueryGetAuctions), bz) if err != nil { rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error()) return } // Write response cliCtx = cliCtx.WithHeight(height) // Unmarshal to Auction and remarshal as AuctionWithPhase var auctions []types.Auction err = cliCtx.LegacyAmino.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 are no auctions for _, a := range auctions { auctionsWithPhase = append(auctionsWithPhase, types.NewAuctionWithPhase(a)) } rest.PostProcessResponse(w, cliCtx, cliCtx.LegacyAmino.MustMarshalJSON(auctionsWithPhase)) } }