103 lines
2.8 KiB
Go
103 lines
2.8 KiB
Go
// Copyright 2018 Frédéric Guillot. All rights reserved.
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// Use of this source code is governed by the Apache 2.0
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// license that can be found in the LICENSE file.
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package pocket
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"net/url"
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"github.com/miniflux/miniflux/http/client"
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)
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// Connector manages the authorization flow with Pocket to get a personal access token.
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type Connector struct {
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consumerKey string
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}
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// RequestToken fetches a new request token from Pocket API.
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func (c *Connector) RequestToken(redirectURL string) (string, error) {
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type req struct {
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ConsumerKey string `json:"consumer_key"`
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RedirectURI string `json:"redirect_uri"`
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}
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clt := client.New("https://getpocket.com/v3/oauth/request")
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response, err := clt.PostJSON(&req{ConsumerKey: c.consumerKey, RedirectURI: redirectURL})
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if err != nil {
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return "", fmt.Errorf("pocket: unable to fetch request token: %v", err)
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}
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if response.HasServerFailure() {
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return "", fmt.Errorf("pocket: unable to fetch request token, status=%d", response.StatusCode)
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}
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body, err := ioutil.ReadAll(response.Body)
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if err != nil {
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return "", fmt.Errorf("pocket: unable to read response body: %v", err)
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}
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values, err := url.ParseQuery(string(body))
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if err != nil {
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return "", fmt.Errorf("pocket: unable to parse response: %v", err)
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}
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code := values.Get("code")
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if code == "" {
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return "", errors.New("pocket: code is empty")
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}
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return code, nil
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}
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// AccessToken fetches a new access token once the end-user authorized the application.
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func (c *Connector) AccessToken(requestToken string) (string, error) {
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type req struct {
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ConsumerKey string `json:"consumer_key"`
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Code string `json:"code"`
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}
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clt := client.New("https://getpocket.com/v3/oauth/authorize")
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response, err := clt.PostJSON(&req{ConsumerKey: c.consumerKey, Code: requestToken})
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if err != nil {
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return "", fmt.Errorf("pocket: unable to fetch access token: %v", err)
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}
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if response.HasServerFailure() {
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return "", fmt.Errorf("pocket: unable to fetch access token, status=%d", response.StatusCode)
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}
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body, err := ioutil.ReadAll(response.Body)
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if err != nil {
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return "", fmt.Errorf("pocket: unable to read response body: %v", err)
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}
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values, err := url.ParseQuery(string(body))
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if err != nil {
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return "", fmt.Errorf("pocket: unable to parse response: %v", err)
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}
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token := values.Get("access_token")
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if token == "" {
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return "", errors.New("pocket: access_token is empty")
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}
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return token, nil
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}
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// AuthorizationURL returns the authorization URL for the end-user.
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func (c *Connector) AuthorizationURL(requestToken, redirectURL string) string {
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return fmt.Sprintf(
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"https://getpocket.com/auth/authorize?request_token=%s&redirect_uri=%s",
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requestToken,
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redirectURL,
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)
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}
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// NewConnector returns a new Pocket Connector.
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func NewConnector(consumerKey string) *Connector {
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return &Connector{consumerKey}
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}
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