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// Copyright 2018 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package browser // import "miniflux.app/reader/browser"
import (
"miniflux.app/errors"
"miniflux.app/http/client"
)
var (
errRequestFailed = "Unable to open this link: %v"
errServerFailure = "Unable to fetch this resource (Status Code = %d)"
errEncoding = "Unable to normalize encoding: %q"
errEmptyFeed = "This feed is empty"
errResourceNotFound = "Resource not found (404), this feed doesn't exists anymore, check the feed URL"
errNotAuthorized = "You are not authorized to access this resource (invalid username/password)"
)
// Exec executes a HTTP request and handles errors.
func Exec(request *client.Client) (*client.Response, *errors.LocalizedError) {
response, err := request.Get()
if err != nil {
if e, ok := err.(*errors.LocalizedError); ok {
return nil, e
}
return nil, errors.NewLocalizedError(errRequestFailed, err)
}
if response.IsNotFound() {
return nil, errors.NewLocalizedError(errResourceNotFound)
}
if response.IsNotAuthorized() {
return nil, errors.NewLocalizedError(errNotAuthorized)
}
if response.HasServerFailure() {
return nil, errors.NewLocalizedError(errServerFailure, response.StatusCode)
}
if response.StatusCode != 304 {
// Content-Length = -1 when no Content-Length header is sent.
if response.ContentLength == 0 {
return nil, errors.NewLocalizedError(errEmptyFeed)
}
if err := response.EnsureUnicodeBody(); err != nil {
return nil, errors.NewLocalizedError(errEncoding, err)
}
}
return response, nil
}
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