github: handle users part of an Org not on a team

providers/github.go

@@ -49,7 +49,45 @@ func (p *GitHubProvider) SetOrgTeam(org, team string) {
 	}
 }
 
+func (p *GitHubProvider) hasOrg(accessToken string) (bool, error) {
+	// https://developer.github.com/v3/orgs/#list-your-organizations
+
+	var orgs []struct {
+		Login string `json:"login"`
+	}
+
+	params := url.Values{
+		"access_token": {accessToken},
+		"limit": {"100"},
+	}
+
+	req, _ := http.NewRequest("GET", "https://api.github.com/user/orgs?"+params.Encode(), nil)
+	req.Header.Set("Accept", "application/vnd.github.moondragon+json")
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return false, err
+	}
+
+	body, err := ioutil.ReadAll(resp.Body)
+	resp.Body.Close()
+	if err != nil {
+		return false, err
+	}
+
+	if err := json.Unmarshal(body, &orgs); err != nil {
+		return false, err
+	}
+
+	for _, org := range orgs {
+		if p.Org == org.Login {
+			return true, nil
+		}
+	}
+	return false, nil
+}
+
 func (p *GitHubProvider) hasOrgAndTeam(accessToken string) (bool, error) {
+	// https://developer.github.com/v3/orgs/teams/#list-user-teams
 
 	var teams []struct {
 		Name string `json:"name"`
@@ -61,6 +99,7 @@ func (p *GitHubProvider) hasOrgAndTeam(accessToken string) (bool, error) {
 
 	params := url.Values{
 		"access_token": {accessToken},
+		"limit": {"100"},
 	}
 
 	req, _ := http.NewRequest("GET", "https://api.github.com/user/teams?"+params.Encode(), nil)
@@ -97,17 +136,23 @@ func (p *GitHubProvider) GetEmailAddress(body []byte, access_token string) (stri
 		Primary bool   `json:"primary"`
 	}
 
-	params := url.Values{
-		"access_token": {access_token},
-	}
 
 	// if we require an Org or Team, check that first
-	if p.Org != "" || p.Team != "" {
-		if ok, err := p.hasOrgAndTeam(access_token); err != nil || !ok {
-			return "", err
+	if p.Org != "" {
+		if p.Team != "" {
+			if ok, err := p.hasOrgAndTeam(access_token); err != nil || !ok {
+				return "", err
+			}
+		} else {
+			if ok, err := p.hasOrg(access_token); err != nil || !ok {
+				return "", err
+			}
 		}
 	}
 
+	params := url.Values{
+		"access_token": {access_token},
+	}
 	resp, err := http.DefaultClient.Get("https://api.github.com/user/emails?" + params.Encode())
 	if err != nil {
 		return "", err