Request compressed api

mastodon/mastodon.go

@@ -5,6 +5,7 @@ import (
 	"bytes"
 	"context"
 	"encoding/json"
+	"compress/gzip"
 	"errors"
 	"fmt"
 	"io"
@@ -144,6 +145,7 @@ func (c *Client) doAPI(ctx context.Context, method string, uri string, params in
 	}
 	req = req.WithContext(ctx)
 	req.Header.Set("Authorization", "Bearer "+c.config.AccessToken)
+	req.Header.Set("accept-encoding", "gzip")
 	if params != nil {
 		req.Header.Set("Content-Type", ct)
 	}
@@ -167,7 +169,15 @@ func (c *Client) doAPI(ctx context.Context, method string, uri string, params in
 			*pg = *pg2
 		}
 	}
-	return json.NewDecoder(resp.Body).Decode(&res)
+	var reader io.ReadCloser
+	switch resp.Header.Get("Content-Encoding") {
+	case "gzip":
+    		reader, err = gzip.NewReader(resp.Body)
+    		defer reader.Close()
+	default:
+    		reader = resp.Body
+	}
+	return json.NewDecoder(reader).Decode(&res)
 }
 
 // NewClient return new mastodon API client.