abi

var ABICmd = &cobra.Command{
	Use:   "abi Contract.abi",
	Short: "A simple tool to parse an ABI and print the encoded signatures",
	Long: `
When looking at raw contract calls, sometimes we have an ABI and we just want
to quickly figure out which method is being called. This is a quick way to
get all of the function selectors for an ABI

go run main.go abi --file ../zkevm-node/etherman/smartcontracts/abi/polygonzkevm.abi

go run main.go abi < ../zkevm-node/etherman/smartcontracts/abi/polygonzkevm.abi

go run main.go abi --data 0x3c158267000000000000000000000000000000000000000000000000000000000000002000000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000063ed0f8f0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006eec03843b9aca0082520894d2f852ec7b4e457f6e7ff8b243c49ff5692926ea87038d7ea4c68000808204c58080642dfe2cca094f2419aad1322ec68e3b37974bd9c918e0686b9bbf02b8bd1145622a3dd64202da71549c010494fd1475d3bf232aa9028204a872fd2e531abfd31c000000000000000000000000000000000000 < ../zkevm-node/etherman/smartcontracts/abi/polygonzkevm.abi
`,
	RunE: func(cmd *cobra.Command, args []string) error {

		rawData, err := getInputData(cmd, args)
		if err != nil {
			return err
		}
		buf := bytes.NewReader(rawData)
		abi, err := gethabi.JSON(buf)
		if err != nil {
			return err
		}
		for _, meth := range abi.Methods {
			fmt.Printf("Selector:%s\tSignature:%s\n", hex.EncodeToString(meth.ID), meth)
		}
		if *inputData != "" {
			id, callData, err := parseContractInputData(*inputData)
			if err != nil {
				return err
			}
			meth, err := abi.MethodById(id)
			if err != nil {
				return err
			}
			if meth == nil {
				return fmt.Errorf("the function selector %s wasn't matched in the given abi", hex.EncodeToString(id))
			}
			inputVals := make(map[string]any, 0)
			err = meth.Inputs.UnpackIntoMap(inputVals, callData)
			if err != nil {
				return err
			}
			fmt.Println("Input data:")
			prettyInput, _ := json.MarshalIndent(inputVals, "", "  ")
			fmt.Println(string(prettyInput))
		}
		return nil
	},
	Args: func(cmd *cobra.Command, args []string) error {
		return nil
	},
}