Add [POST] /v1/oauth/token endpoint (#35)

* Add [POST] /v1/oauth/token endpoint

* Add timeout tests...

* Add docs for OAuth

* Rename sample board to prevent race condition

Author: BrandonRomano

README.md

@@ -95,6 +95,20 @@ if pinterestError, ok := err.(*models.PinterestError); ok {
 }
 ```
 
+## OAuth Endpoints
+
+### Generate Access Token
+
+`[POST] /v1/oauth/token`
+
+```go
+accessToken, err := client.OAuth.Token.Create(
+    "client-id",
+    "client-secret",
+    "access-code"
+)
+```
+
 ## Boards Endpoints
 
 ### Create a Board

controllers/oauth_controller.go

@@ -0,0 +1,20 @@
+package controllers
+
+import (
+	"github.com/BrandonRomano/wrecker"
+)
+
+// OAuthController is the controller that is responsible
+// for all /v1/oauth endpoints in the Pinterest API.
+type OAuthController struct {
+	wreckerClient *wrecker.Wrecker
+	Token         *OAuthTokenController
+}
+
+// NewOAuthController instantiates a new OAuthController
+func NewOAuthController(wc *wrecker.Wrecker) *OAuthController {
+	return &OAuthController{
+		wreckerClient: wc,
+		Token:         newOAuthTokenController(wc),
+	}
+}

controllers/oauth_token_controller.go

@@ -0,0 +1,47 @@
+package controllers
+
+import (
+	"github.com/BrandonRomano/wrecker"
+	"github.com/carrot/go-pinterest/models"
+)
+
+// OAuthTokenController is the controller that is responsible
+// for all /v1/oauth/token endpoints in the Pinterest API.
+type OAuthTokenController struct {
+	wreckerClient *wrecker.Wrecker
+}
+
+// newOAuthTokenController instantiates a new OAuthTokenController
+func newOAuthTokenController(wc *wrecker.Wrecker) *OAuthTokenController {
+	return &OAuthTokenController{
+		wreckerClient: wc,
+	}
+}
+
+// Create generates an access token
+// Endpoint: [POST] /v1/oauth/token
+func (otc *OAuthTokenController) Create(clientId, clientSecret, accessCode string) (*models.AccessToken, error) {
+	// Build + execute request
+	accessToken := new(models.AccessToken)
+	httpResp, err := otc.wreckerClient.Post("/oauth/token").
+		URLParam("grant_type", "authorization_code").
+		URLParam("client_id", clientId).
+		URLParam("client_secret", clientSecret).
+		URLParam("code", accessCode).
+		Into(accessToken).
+		Execute()
+
+	if err != nil {
+		return nil, err
+	}
+
+	if !(httpResp.StatusCode >= 200 && httpResp.StatusCode < 300) {
+		return nil, &models.PinterestError{
+			StatusCode: httpResp.StatusCode,
+			Message:    accessToken.Error,
+		}
+	}
+
+	// OK
+	return accessToken, nil
+}

models/access_token.go

@@ -0,0 +1,11 @@
+package models
+
+// AccessToken is a struct that represents a Access Token
+// response from the Pinterest API.
+type AccessToken struct {
+	AccessToken      string   `json:"access_token"`
+	TokenType        string   `json:"token_type"`
+	Scope            []string `json:"scope"`
+	ErrorDescription string   `json:"error_description"`
+	Error            string   `json:"error"`
+}

pinterest.go

@@ -17,6 +17,7 @@ import (
 // For more information about the Pinterest API,
 // check out https://developers.pinterest.com/
 type Client struct {
+	OAuth         *controllers.OAuthController
 	Users         *controllers.UsersController
 	Boards        *controllers.BoardsController
 	Pins          *controllers.PinsController
@@ -40,6 +41,7 @@ func NewClient() *Client {
 	// Build Pinterest client
 	return &Client{
 		wreckerClient: wc,
+		OAuth:         controllers.NewOAuthController(wc),
 		Users:         controllers.NewUsersController(wc),
 		Boards:        controllers.NewBoardsController(wc),
 		Pins:          controllers.NewPinsController(wc),

pinterest_test.go

@@ -357,18 +357,18 @@ func (suite *ClientTestSuite) TestSuccessfulBoardCUD() {
 	// Updating the Board
 	board, err = suite.client.Boards.Update("brandonrromano/go-pinterest-test",
 		&controllers.BoardUpdateOptionals{
-			Name:        "Go Pinterest Test2",
-			Description: "Go Pinterest Test2!",
+			Name:        "Go Pinterest Test3",
+			Description: "Go Pinterest Test3!",
 		},
 	)
 
 	// Assume there is no error / test result
 	assert.Equal(suite.T(), nil, err)
-	assert.Equal(suite.T(), board.Name, "Go Pinterest Test2")
-	assert.Equal(suite.T(), board.Description, "Go Pinterest Test2!")
+	assert.Equal(suite.T(), board.Name, "Go Pinterest Test3")
+	assert.Equal(suite.T(), board.Description, "Go Pinterest Test3!")
 
 	// Deleting the board
-	err = suite.client.Boards.Delete("brandonrromano/go-pinterest-test2")
+	err = suite.client.Boards.Delete("brandonrromano/go-pinterest-test3")
 	assert.Equal(suite.T(), nil, err)
 }
 
@@ -1432,3 +1432,32 @@ func (suite *ClientTestSuite) TestUnauthorizedMeSearchPinsFetch() {
 		assert.Equal(suite.T(), true, false)
 	}
 }
+
+// ========================================
+// ========== OAuth.Token.Create ==========
+// ========================================
+
+// TestTimeoutOAuthTokenCreate tests that an error is appropriately thrown
+// when a network timeout occurs
+func (suite *ClientTestSuite) TestTimeoutOAuthTokenCreate() {
+	_, err := suite.timeoutClient.OAuth.Token.Create("", "", "")
+	assert.NotEqual(suite.T(), nil, err)
+}
+
+// TestUnauthorizedOAuthTokenCreate tests that an error is appropriately thrown
+// when the user makes an unauthorized request
+func (suite *ClientTestSuite) TestUnauthorizedOAuthTokenCreate() {
+	_, err := suite.client.OAuth.Token.Create("", "", "")
+
+	// There should be an error
+	assert.NotEqual(suite.T(), nil, err)
+
+	// Check error type
+	if pinterestError, ok := err.(*models.PinterestError); ok {
+		// Should be a 401
+		assert.Equal(suite.T(), http.StatusUnauthorized, pinterestError.StatusCode)
+	} else {
+		// Make this error out, should always be a PinterestError
+		assert.Equal(suite.T(), true, false)
+	}
+}