// Copyright 2009 The Go 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 http

// HTTP status codes, defined in RFC 2616.
const (
	StatusContinue           = 100
	StatusSwitchingProtocols = 101

	StatusOK                   = 200
	StatusCreated              = 201
	StatusAccepted             = 202
	StatusNonAuthoritativeInfo = 203
	StatusNoContent            = 204
	StatusResetContent         = 205
	StatusPartialContent       = 206

	StatusMultipleChoices   = 300
	StatusMovedPermanently  = 301
	StatusFound             = 302
	StatusSeeOther          = 303
	StatusNotModified       = 304
	StatusUseProxy          = 305
	StatusTemporaryRedirect = 307

	StatusBadRequest                   = 400
	StatusUnauthorized                 = 401
	StatusPaymentRequired              = 402
	StatusForbidden                    = 403
	StatusNotFound                     = 404
	StatusMethodNotAllowed             = 405
	StatusNotAcceptable                = 406
	StatusProxyAuthRequired            = 407
	StatusRequestTimeout               = 408
	StatusConflict                     = 409
	StatusGone                         = 410
	StatusLengthRequired               = 411
	StatusPreconditionFailed           = 412
	StatusRequestEntityTooLarge        = 413
	StatusRequestURITooLong            = 414
	StatusUnsupportedMediaType         = 415
	StatusRequestedRangeNotSatisfiable = 416
	StatusExpectationFailed            = 417
	StatusTeapot                       = 418

	StatusInternalServerError     = 500
	StatusNotImplemented          = 501
	StatusBadGateway              = 502
	StatusServiceUnavailable      = 503
	StatusGatewayTimeout          = 504
	StatusHTTPVersionNotSupported = 505

	// New HTTP status codes from RFC 6585. Not exported yet in Go 1.1.
	// See discussion at https://codereview.appspot.com/7678043/
	statusPreconditionRequired          = 428
	statusTooManyRequests               = 429
	statusRequestHeaderFieldsTooLarge   = 431
	statusNetworkAuthenticationRequired = 511
)

var statusText = map[int]string{
	StatusContinue:           "Continue",
	StatusSwitchingProtocols: "Switching Protocols",

	StatusOK:                   "OK",
	StatusCreated:              "Created",
	StatusAccepted:             "Accepted",
	StatusNonAuthoritativeInfo: "Non-Authoritative Information",
	StatusNoContent:            "No Content",
	StatusResetContent:         "Reset Content",
	StatusPartialContent:       "Partial Content",

	StatusMultipleChoices:   "Multiple Choices",
	StatusMovedPermanently:  "Moved Permanently",
	StatusFound:             "Found",
	StatusSeeOther:          "See Other",
	StatusNotModified:       "Not Modified",
	StatusUseProxy:          "Use Proxy",
	StatusTemporaryRedirect: "Temporary Redirect",

	StatusBadRequest:                   "Bad Request",
	StatusUnauthorized:                 "Unauthorized",
	StatusPaymentRequired:              "Payment Required",
	StatusForbidden:                    "Forbidden",
	StatusNotFound:                     "Not Found",
	StatusMethodNotAllowed:             "Method Not Allowed",
	StatusNotAcceptable:                "Not Acceptable",
	StatusProxyAuthRequired:            "Proxy Authentication Required",
	StatusRequestTimeout:               "Request Timeout",
	StatusConflict:                     "Conflict",
	StatusGone:                         "Gone",
	StatusLengthRequired:               "Length Required",
	StatusPreconditionFailed:           "Precondition Failed",
	StatusRequestEntityTooLarge:        "Request Entity Too Large",
	StatusRequestURITooLong:            "Request URI Too Long",
	StatusUnsupportedMediaType:         "Unsupported Media Type",
	StatusRequestedRangeNotSatisfiable: "Requested Range Not Satisfiable",
	StatusExpectationFailed:            "Expectation Failed",
	StatusTeapot:                       "I'm a teapot",

	StatusInternalServerError:     "Internal Server Error",
	StatusNotImplemented:          "Not Implemented",
	StatusBadGateway:              "Bad Gateway",
	StatusServiceUnavailable:      "Service Unavailable",
	StatusGatewayTimeout:          "Gateway Timeout",
	StatusHTTPVersionNotSupported: "HTTP Version Not Supported",

	statusPreconditionRequired:          "Precondition Required",
	statusTooManyRequests:               "Too Many Requests",
	statusRequestHeaderFieldsTooLarge:   "Request Header Fields Too Large",
	statusNetworkAuthenticationRequired: "Network Authentication Required",
}

// StatusText returns a text for the HTTP status code. It returns the empty
// string if the code is unknown.
func StatusText(code int) string {
	return statusText[code]
}