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Adding support for passing in an existing oauth2.Token in the App config #49

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Adding support for passing in an existing oauth2.Token in the App config #49

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15 changes: 13 additions & 2 deletions reddit/app.go
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Original file line number Diff line number Diff line change
@@ -1,6 +1,10 @@
package reddit

import "fmt"
import (
"fmt"

"golang.org/x/oauth2"
)

var (
errMissingOauthCredentials = fmt.Errorf("missing oauth credentials")
Expand All @@ -24,17 +28,24 @@ type App struct {

// tokenURL is the url of the token request location for OAuth2.
tokenURL string

// If token is specified, username/password authentication is skipped
Token *oauth2.Token
}

func (a App) unauthenticated() bool {
return a.ID == "" || a.Secret == ""
return a.Token == nil && (a.ID == "" || a.Secret == "")
}

func (a App) validateAuth() error {
if a.unauthenticated() {
return errMissingOauthCredentials
}

if a.Token != nil {
return nil
}

if a.Password != "" && a.Username == "" {
return errMissingUsername
}
Expand Down
35 changes: 22 additions & 13 deletions reddit/app_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -2,19 +2,23 @@ package reddit

import (
"testing"

"golang.org/x/oauth2"
)

func TestAppUnauthenticated(t *testing.T) {
for i, test := range []struct {
input App
output bool
}{
{App{"y", "", "", "", ""}, true},
{App{"", "y", "", "", ""}, true},
{App{"y", "y", "", "", ""}, false},
{App{"y", "y", "y", "", ""}, false},
{App{"y", "y", "", "y", ""}, false},
{App{"y", "y", "y", "y", ""}, false},
{App{"y", "", "", "", "", nil}, true},
{App{"", "y", "", "", "", nil}, true},
{App{"y", "", "", "", "", &oauth2.Token{}}, false},
{App{"", "y", "", "", "", &oauth2.Token{}}, false},
{App{"y", "y", "", "", "", nil}, false},
{App{"y", "y", "y", "", "", nil}, false},
{App{"y", "y", "", "y", "", nil}, false},
{App{"y", "y", "y", "y", "", nil}, false},
} {
if actual := test.input.unauthenticated(); actual != test.output {
t.Errorf("wrong on %d; wanted %v", i, test.output)
Expand All @@ -27,13 +31,18 @@ func TestAppValidateAuth(t *testing.T) {
input App
output error
}{
{App{"", "", "", "", ""}, errMissingOauthCredentials},
{App{"y", "", "", "", ""}, errMissingOauthCredentials},
{App{"", "y", "", "", ""}, errMissingOauthCredentials},
{App{"y", "y", "y", "", ""}, errMissingPassword},
{App{"y", "y", "", "y", ""}, errMissingUsername},
{App{"y", "y", "", "", ""}, nil},
{App{"y", "y", "y", "y", ""}, nil},
{App{"", "", "", "", "", nil}, errMissingOauthCredentials},
{App{"y", "", "", "", "", nil}, errMissingOauthCredentials},
{App{"", "y", "", "", "", nil}, errMissingOauthCredentials},
{App{"y", "y", "y", "", "", nil}, errMissingPassword},
{App{"y", "y", "", "y", "", nil}, errMissingUsername},
{App{"", "", "", "", "", &oauth2.Token{}}, nil},
{App{"y", "", "", "", "", &oauth2.Token{}}, nil},
{App{"", "y", "", "", "", &oauth2.Token{}}, nil},
{App{"y", "y", "y", "", "", &oauth2.Token{}}, nil},
{App{"y", "y", "", "y", "", &oauth2.Token{}}, nil},
{App{"y", "y", "", "", "", nil}, nil},
{App{"y", "y", "y", "y", "", nil}, nil},
} {
if actual := test.input.validateAuth(); actual != test.output {
t.Errorf("wrong on %d; wanted %v", i, test.output)
Expand Down
21 changes: 15 additions & 6 deletions reddit/appclient.go
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Original file line number Diff line number Diff line change
Expand Up @@ -29,7 +29,7 @@ func (a *appClient) Do(req *http.Request) ([]byte, error) {
func (a *appClient) authorize() error {
ctx := context.WithValue(oauth2.NoContext, oauth2.HTTPClient, a.cli)

if a.cfg.app.Username == "" || a.cfg.app.Password == "" {
if a.cfg.app.unauthenticated() {
a.baseClient.cli = a.clientCredentialsClient(ctx)
return nil
}
Expand All @@ -41,13 +41,22 @@ func (a *appClient) authorize() error {
Scopes: oauthScopes,
}

token, err := cfg.PasswordCredentialsToken(
ctx,
a.cfg.app.Username,
a.cfg.app.Password,
)
var token *oauth2.Token
var err error

if a.cfg.app.Token != nil {
token = a.cfg.app.Token
err = nil
} else {
token, err = cfg.PasswordCredentialsToken(
ctx,
a.cfg.app.Username,
a.cfg.app.Password,
)
}

a.baseClient.cli = cfg.Client(ctx, token)

return err
}

Expand Down