Add methods to flair service, fix comment typo

Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>

reddit/flair.go

@@ -2,8 +2,12 @@ package reddit
 
 import (
 	"context"
+	"errors"
 	"fmt"
 	"net/http"
+	"net/url"
+
+	"github.com/google/go-querystring/query"
 )
 
 // FlairService handles communication with the flair
@@ -35,6 +39,21 @@ type FlairSummary struct {
 	CSSClass string `json:"flair_css_class,omitempty"`
 }
 
+// ConfigureFlairRequest represents a request to configure a subreddit's flair settings.
+// Not setting an attribute can have unexpected side effects.
+type ConfigureFlairRequest struct {
+	// Enable user flair in the subreddit.
+	UserFlairEnabled *bool `url:"flair_enabled,omitempty"`
+	// One of: left, right.
+	UserFlairPosition string `url:"flair_position,omitempty"`
+	// Allow users to assign their own flair.
+	UserFlairSelfAssignEnabled *bool `url:"flair_self_assign_enabled,omitempty"`
+	// One of: none, left, right.
+	PostFlairPosition string `url:"link_flair_position,omitempty"`
+	// Allow submitters to assign their own post flair.
+	PostFlairSelfAssignEnabled *bool `url:"link_flair_self_assign_enabled,omitempty"`
+}
+
 // GetUserFlairs returns the user flairs from the subreddit.
 func (s *FlairService) GetUserFlairs(ctx context.Context, subreddit string) ([]*Flair, *Response, error) {
 	path := fmt.Sprintf("r/%s/api/user_flair_v2", subreddit)
@@ -80,13 +99,67 @@ func (s *FlairService) ListUserFlairs(ctx context.Context, subreddit string) ([]
 		return nil, nil, err
 	}
 
-	var root struct {
+	root := new(struct {
 		UserFlairs []*FlairSummary `json:"users"`
-	}
-	resp, err := s.client.Do(ctx, req, &root)
+	})
+	resp, err := s.client.Do(ctx, req, root)
 	if err != nil {
 		return nil, resp, err
 	}
 
 	return root.UserFlairs, resp, nil
 }
+
+// Configure the subreddit's flair settings.
+func (s *FlairService) Configure(ctx context.Context, subreddit string, request *ConfigureFlairRequest) (*Response, error) {
+	if request == nil {
+		return nil, errors.New("request: cannot be nil")
+	}
+
+	path := fmt.Sprintf("r/%s/api/flairconfig", subreddit)
+
+	form, err := query.Values(request)
+	if err != nil {
+		return nil, err
+	}
+	form.Set("api_type", "json")
+
+	req, err := s.client.NewRequestWithForm(http.MethodPost, path, form)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}
+
+// Enable your flair in the subreddit.
+func (s *FlairService) Enable(ctx context.Context, subreddit string) (*Response, error) {
+	path := fmt.Sprintf("r/%s/api/setflairenabled", subreddit)
+
+	form := url.Values{}
+	form.Set("api_type", "json")
+	form.Set("flair_enabled", "true")
+
+	req, err := s.client.NewRequestWithForm(http.MethodPost, path, form)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}
+
+// Disable your flair in the subreddit.
+func (s *FlairService) Disable(ctx context.Context, subreddit string) (*Response, error) {
+	path := fmt.Sprintf("r/%s/api/setflairenabled", subreddit)
+
+	form := url.Values{}
+	form.Set("api_type", "json")
+	form.Set("flair_enabled", "false")
+
+	req, err := s.client.NewRequestWithForm(http.MethodPost, path, form)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}