package mcp

import "encoding/json"

const (
	CodePermissionDenied = -32001
	CodeNotFound         = -32002
	CodeConflict         = -32003
	CodeValidation       = -32004
	CodeUpstreamGitea    = -32005
)

type Request struct {
	JSONRPC string          `json:"jsonrpc"`
	ID      any             `json:"id,omitempty"`
	Method  string          `json:"method"`
	Params  json.RawMessage `json:"params,omitempty"`
}

type Response struct {
	JSONRPC string    `json:"jsonrpc"`
	ID      any       `json:"id,omitempty"`
	Result  any       `json:"result,omitempty"`
	Error   *RPCError `json:"error,omitempty"`
}

type RPCError struct {
	Code    int    `json:"code"`
	Message string `json:"message"`
	Data    any    `json:"data,omitempty"`
}

func NewResponse(id any, result any) Response {
	return Response{JSONRPC: "2.0", ID: id, Result: result}
}

func NewErrorResponse(id any, code int, msg string, data any) Response {
	return Response{
		JSONRPC: "2.0",
		ID:      id,
		Error:   &RPCError{Code: code, Message: msg, Data: data},
	}
}