From aae4c5de504573b3ce3df198f93044d55a132f1e Mon Sep 17 00:00:00 2001
From: Howl <the@howl.moe>
Date: Thu, 7 Apr 2016 12:21:54 +0200
Subject: [PATCH] Add GET /friends/with/:id

---
 app/start.go     |  1 +
 app/v1/friend.go | 23 +++++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/app/start.go b/app/start.go
index 11b7112..3cc27e7 100644
--- a/app/start.go
+++ b/app/start.go
@@ -35,6 +35,7 @@ func Start(conf common.Conf, db *sql.DB) {
 
 			// ReadConfidential privilege required
 			gv1.GET("/friends", Method(v1.FriendsGET, db, common.PrivilegeReadConfidential))
+			gv1.GET("/friends/with/:id", Method(v1.FriendsWithGET, db, common.PrivilegeReadConfidential))
 		}
 	}
 
diff --git a/app/v1/friend.go b/app/v1/friend.go
index 0740a2e..f1c2c40 100644
--- a/app/v1/friend.go
+++ b/app/v1/friend.go
@@ -117,3 +117,26 @@ func friendPuts(md common.MethodData, row *sql.Rows) (user friendData) {
 	}
 	return
 }
+
+type friendsWithData struct {
+	Friends bool `json:"friend"`
+	Mutual  bool `json:"mutual"`
+}
+
+// FriendsWithGET checks the current user is friends with the one passed in the request path.
+func FriendsWithGET(md common.MethodData) (r common.Response) {
+	r.Code = 200
+	var d friendsWithData
+	uid, err := strconv.Atoi(md.C.Param("id"))
+	if err != nil {
+		r.Data = d
+		return
+	}
+	md.DB.QueryRow("SELECT EXISTS(SELECT 1 FROM users_relationships WHERE user1 = ? AND user2 = ? LIMIT 1)", md.User.UserID, uid).Scan(&d.Friends)
+	if d.Friends {
+		// Nyo mode: activated
+		md.DB.QueryRow("SELECT EXISTS(SELECT 1 FROM users_relationships WHERE user2 = ? AND user1 = ? LIMIT 1)", md.User.UserID, uid).Scan(&d.Mutual)
+	}
+	r.Data = d
+	return
+}