// Copyright 2013 The Gorilla WebSocket Authors. All rights reserved.

// Use of this source code is governed by a BSD-style

// license that can be found in the LICENSE file.

package websocket

import (

	"encoding/json"

	"io"

)

// WriteJSON writes the JSON encoding of v as a message.

//

// Deprecated: Use c.WriteJSON instead.

func WriteJSON(c *Conn, v interface{}) error {

	return c.WriteJSON(v)

}

// WriteJSON writes the JSON encoding of v as a message.

//

// See the documentation for encoding/json Marshal for details about the

// conversion of Go values to JSON.

func (c *Conn) WriteJSON(v interface{}) error {

	w, err := c.NextWriter(TextMessage)

	if err != nil {

		return err

	}

	err1 := json.NewEncoder(w).Encode(v)

	err2 := w.Close()

	if err1 != nil {

		return err1

	}

	return err2

}

// ReadJSON reads the next JSON-encoded message from the connection and stores

// it in the value pointed to by v.

//

// Deprecated: Use c.ReadJSON instead.

func ReadJSON(c *Conn, v interface{}) error {

	return c.ReadJSON(v)

}

// ReadJSON reads the next JSON-encoded message from the connection and stores

// it in the value pointed to by v.

//

// See the documentation for the encoding/json Unmarshal function for details

// about the conversion of JSON to a Go value.

func (c *Conn) ReadJSON(v interface{}) error {

	_, r, err := c.NextReader()

	if err != nil {

		return err

	}

	err = json.NewDecoder(r).Decode(v)

	if err == io.EOF {

		// One value is expected in the message.

		err = io.ErrUnexpectedEOF

	}

	return err

}