synapsecns/sanguine

package api

import (
    "fmt"
    "strconv"

    "github.com/ethereum/go-ethereum/common"
    "github.com/gin-gonic/gin"
)

func getRawParam(name string, ctx *gin.Context) (string, error) {
    value := ctx.Query(name)
    if value == "" {
        return "", fmt.Errorf("required parameter '%s' is missing", name)
    }
    return value, nil
}

const originParamName = "origin"
const hashParamName = "hash"

func getOriginParam(ctx *gin.Context) (uint32, error) {
    rawValue, err := getRawParam(originParamName, ctx)
    if err != nil {
        return 0, err
    }
    value, err := strconv.Atoi(rawValue)
    if err != nil {
        return 0, fmt.Errorf("could not parse origin: %s", rawValue)
    }
    return uint32(value), nil
}

func getHashParam(ctx *gin.Context) (string, error) {
    value, err := getRawParam(hashParamName, ctx)
    if err != nil {
        return "", err
    }
    value = common.HexToHash(value).String()
    return value, nil
}