package response

import (
	"context"
	"errors"
	"net/http"

	"github.com/zeromicro/go-zero/core/logx"
	"github.com/zeromicro/go-zero/rest/httpx"
)

type Body struct {
	Code int         `json:"code"`
	Msg  string      `json:"msg"`
	Data interface{} `json:"data,omitempty"`
}

type CodeError struct {
	code int
	msg  string
}

func NewCodeError(code int, msg string) *CodeError {
	return &CodeError{code: code, msg: msg}
}

func (e *CodeError) Error() string { return e.msg }
func (e *CodeError) Code() int     { return e.code }

func ErrBadRequest(msg string) *CodeError   { return NewCodeError(400, msg) }
func ErrUnauthorized(msg string) *CodeError { return NewCodeError(401, msg) }
func ErrForbidden(msg string) *CodeError    { return NewCodeError(403, msg) }
func ErrNotFound(msg string) *CodeError     { return NewCodeError(404, msg) }
func ErrConflict(msg string) *CodeError     { return NewCodeError(409, msg) }

func Setup() {
	httpx.SetOkHandler(func(_ context.Context, v any) any {
		if v == nil {
			return Body{Code: 0, Msg: "ok"}
		}
		return Body{Code: 0, Msg: "ok", Data: v}
	})

	httpx.SetErrorHandlerCtx(func(ctx context.Context, err error) (int, any) {
		var ce *CodeError
		if errors.As(err, &ce) {
			return http.StatusOK, Body{Code: ce.Code(), Msg: ce.Error()}
		}
		logx.WithContext(ctx).Errorf("internal error: %+v", err)
		return http.StatusOK, Body{Code: 500, Msg: "服务器内部错误"}
	})
}