mesg-foundation/core

package rest

import (
    "fmt"
    "io/ioutil"
    "net/http"

    "github.com/gorilla/mux"

    "github.com/cosmos/cosmos-sdk/client/context"
    "github.com/cosmos/cosmos-sdk/types/rest"
    "github.com/mesg-foundation/engine/service"
    "github.com/mesg-foundation/engine/x/service/internal/types"
)

func registerQueryRoutes(cliCtx context.CLIContext, r *mux.Router) {
    r.HandleFunc(
        "/service/get/{hash}",
        queryGetHandlerFn(cliCtx),
    ).Methods(http.MethodGet)

    r.HandleFunc(
        "/service/list",
        queryListHandlerFn(cliCtx),
    ).Methods(http.MethodGet)

    r.HandleFunc(
        "/service/hash",
        queryHashHandlerFn(cliCtx),
    ).Methods(http.MethodPost)

    r.HandleFunc(
        "/service/exist/{hash}",
        queryExistHandlerFn(cliCtx),
    ).Methods(http.MethodGet)
}

func queryGetHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        vars := mux.Vars(r)

        cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
        if !ok {
            return
        }

        route := fmt.Sprintf("custom/%s/%s/%s", types.QuerierRoute, types.QueryGet, vars["hash"])

        res, height, err := cliCtx.QueryWithData(route, nil)
        if err != nil {
            rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
            return
        }

        cliCtx = cliCtx.WithHeight(height)
        rest.PostProcessResponse(w, cliCtx, res)
    }
}

func queryListHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
        if !ok {
            return
        }

        route := fmt.Sprintf("custom/%s/%s", types.QuerierRoute, types.QueryList)

        res, height, err := cliCtx.QueryWithData(route, nil)
        if err != nil {
            rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
            return
        }

        cliCtx = cliCtx.WithHeight(height)
        rest.PostProcessResponse(w, cliCtx, res)
    }
}

// HashRequest is the request of the hash endpoint.
type HashRequest struct {
    Sid           string                        `json:"sid,omitempty"`
    Name          string                        `json:"name,omitempty"`
    Description   string                        `json:"description,omitempty"`
    Configuration service.Service_Configuration `json:"configuration"`
    Tasks         []*service.Service_Task       `json:"tasks,omitempty"`
    Events        []*service.Service_Event      `json:"events,omitempty"`
    Dependencies  []*service.Service_Dependency `json:"dependencies,omitempty"`
    Repository    string                        `json:"repository,omitempty"`
    Source        string                        `json:"source,omitempty"`
}

func queryHashHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
        if !ok {
            return
        }

        data, err := ioutil.ReadAll(r.Body)
        if err != nil {
            rest.WriteErrorResponse(w, http.StatusInternalServerError, err.Error())
            return
        }

        var req HashRequest
        if err := cliCtx.Codec.UnmarshalJSON(data, &req); err != nil {
            rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
            return
        }

        srv, err := service.New(
            req.Sid,
            req.Name,
            req.Description,
            req.Configuration,
            req.Tasks,
            req.Events,
            req.Dependencies,
            req.Repository,
            req.Source,
        )
        if err != nil {
            rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
            return
        }

        rest.PostProcessResponse(w, cliCtx, srv.Hash.String())
    }
}

func queryExistHandlerFn(cliCtx context.CLIContext) http.HandlerFunc {
    return func(w http.ResponseWriter, r *http.Request) {
        vars := mux.Vars(r)

        cliCtx, ok := rest.ParseQueryHeightOrReturnBadRequest(w, cliCtx, r)
        if !ok {
            return
        }

        route := fmt.Sprintf("custom/%s/%s/%s", types.QuerierRoute, types.QueryExist, vars["hash"])

        res, height, err := cliCtx.QueryWithData(route, nil)
        if err != nil {
            rest.WriteErrorResponse(w, http.StatusBadRequest, err.Error())
            return
        }

        cliCtx = cliCtx.WithHeight(height)
        rest.PostProcessResponse(w, cliCtx, res)
    }
}