Add unfollow endpoint

src/api/lib.zig

@@ -492,6 +492,11 @@ fn ApiConn(comptime DbConn: type) type {
             defer util.deepFree(self.arena.allocator(), result);
         }
 
+        pub fn unfollow(self: *Self, followee: Uuid) !void {
+            const result = try services.follows.delete(self.db, self.user_id orelse return error.NoToken, followee, self.arena.allocator());
+            defer util.deepFree(self.arena.allocator(), result);
+        }
+
         pub fn getClusterMeta(self: *Self) !ClusterMeta {
             return try self.db.queryRow(
                 ClusterMeta,

src/api/services/follows.zig

@@ -33,6 +33,17 @@ pub fn create(db: anytype, followed_by_id: Uuid, followee_id: Uuid, alloc: std.m
     };
 }
 
+pub fn delete(db: anytype, followed_by_id: Uuid, followee_id: Uuid, alloc: std.mem.Allocator) !void {
+    // TODO: Measure count and report success
+    db.exec(
+        \\DELETE FROM follow
+        \\WHERE followed_by_id = $1 AND followee_id = $2
+    ,
+        .{ followed_by_id, followee_id },
+        alloc,
+    ) catch return error.DatabaseFailure;
+}
+
 const max_max_items = 100;
 
 pub const QueryArgs = struct {

src/main/controllers.zig

@@ -50,6 +50,7 @@ const routes = .{
     timelines.local,
     timelines.home,
     follows.create,
+    follows.delete,
     follows.query_followers,
     follows.query_following,
 } ++ web.routes;

src/main/controllers/api/users/follows.zig

@@ -19,6 +19,21 @@ pub const create = struct {
     }
 };
 
+pub const delete = struct {
+    pub const method = .DELETE;
+    pub const path = "/api/v0/users/:id/follow";
+
+    pub const Args = struct {
+        id: Uuid,
+    };
+
+    pub fn handler(req: anytype, res: anytype, srv: anytype) !void {
+        try srv.unfollow(req.args.id);
+
+        try res.json(.ok, .{});
+    }
+};
+
 pub const query_followers = struct {
     pub const method = .GET;
     pub const path = "/api/v0/users/:id/followers";