wrap some errors

osuapi/beatmapsets.go

@@ -6,6 +6,8 @@ import (
 	"io/ioutil"
 	"net/url"
 	"os"
+
+	"github.com/pkg/errors"
 )
 
 func (api *Osuapi) SearchBeatmaps(rankStatus string) (beatmapSearch BeatmapSearch, err error) {
@@ -15,7 +17,7 @@ func (api *Osuapi) SearchBeatmaps(rankStatus string) (beatmapSearch BeatmapSearc
 	url := "/beatmapsets/search?" + query
 	err = api.Request("GET", url, &beatmapSearch)
 	if err != nil {
-		return
+		return errors.Wrap("failed to search beatmaps")
 	}
 
 	return

osuapi/osuapi.go

@@ -11,6 +11,7 @@ import (
 	"sync"
 	"time"
 
+	"github.com/pkg/errors"
 	"golang.org/x/sync/semaphore"
 
 	"subscribe-bot/config"
@@ -73,17 +74,20 @@ func (api *Osuapi) Token() (token string, err error) {
 		strings.NewReader(data),
 	)
 	if err != nil {
+		err = errors.Wrap("failed to make POST request")
 		return
 	}
 
 	var osuToken OsuToken
 	respBody, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
+		err = errors.Wrap("failed to read response body")
 		return
 	}
 
 	err = json.Unmarshal(respBody, &osuToken)
 	if err != nil {
+		err = errors.Wrap("failed to unmarshal response body as json")
 		return
 	}
 
@@ -106,16 +110,15 @@ func (api *Osuapi) Request0(action string, url string) (resp *http.Response, err
 
 	token, err := api.Token()
 	if err != nil {
+		err = errors.Wrap("failed to fetch token")
 		return
 	}
 
 	req.Header.Add("Authorization", "Bearer "+token)
-	if err != nil {
-		return
-	}
 
 	resp, err = api.httpClient.Do(req)
 	if err != nil {
+		err = errors.Wrap("http client failed")
 		return
 	}
 
@@ -141,17 +144,17 @@ func (api *Osuapi) Request0(action string, url string) (resp *http.Response, err
 func (api *Osuapi) Request(action string, url string, result interface{}) (err error) {
 	resp, err := api.Request0(action, url)
 	if err != nil {
-		return
+		return errors.Wrap("base request failed")
 	}
 
 	data, err := ioutil.ReadAll(resp.Body)
 	if err != nil {
-		return
+		return errors.Wrap("failed to read http response body")
 	}
 
 	err = json.Unmarshal(data, result)
 	if err != nil {
-		return
+		return errors.Wrap("failed to unmarshal http response as json")
 	}
 
 	return