Add good bit of functionality, some tests

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

flair.go

@@ -0,0 +1,74 @@
+package geddit
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+)
+
+// FlairService handles communication with the user
+// related methods of the Reddit API
+type FlairService interface {
+	GetFromSubreddit(ctx context.Context, name string) ([]Flair, *Response, error)
+	GetFromSubredditV2(ctx context.Context, name string) ([]FlairV2, *Response, error)
+}
+
+// FlairServiceOp implements the FlairService interface
+type FlairServiceOp struct {
+	client *Client
+}
+
+var _ FlairService = &FlairServiceOp{}
+
+// Flair is a flair on Reddit
+type Flair struct {
+	ID   string `json:"id,omitempty"`
+	Text string `json:"text,omitempty"`
+	Type string `json:"type,omitempty"`
+	CSS  string `json:"css_class,omitempty"`
+}
+
+// FlairV2 is a flair on Reddit
+type FlairV2 struct {
+	ID      string `json:"id,omitempty"`
+	Text    string `json:"text,omitempty"`
+	Type    string `json:"type,omitempty"`
+	CSS     string `json:"css_class,omitempty"`
+	ModOnly bool   `json:"mod_only"`
+}
+
+// GetFromSubreddit returns the flairs from the subreddit
+func (s *FlairServiceOp) GetFromSubreddit(ctx context.Context, name string) ([]Flair, *Response, error) {
+	path := fmt.Sprintf("r/%s/api/user_flair", name)
+
+	req, err := s.client.NewRequest(http.MethodGet, path, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var flairs []Flair
+	resp, err := s.client.Do(ctx, req, &flairs)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return flairs, resp, nil
+}
+
+// GetFromSubredditV2 returns the flairs from the subreddit
+func (s *FlairServiceOp) GetFromSubredditV2(ctx context.Context, name string) ([]FlairV2, *Response, error) {
+	path := fmt.Sprintf("r/%s/api/user_flair_v2", name)
+
+	req, err := s.client.NewRequest(http.MethodGet, path, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var flairs []FlairV2
+	resp, err := s.client.Do(ctx, req, &flairs)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return flairs, resp, nil
+}