Finalize JSON representation of single tag

src/json.zig

@@ -28,7 +28,7 @@ pub const Obj = struct {
     pub fn newInt32(i: i32) Obj {
         return Obj{ .obj = c.json_object_new_int(i).? };
     }
-    pub fn newInt64(i: i32) Obj {
+    pub fn newInt64(i: i64) Obj {
         return Obj{ .obj = c.json_object_new_int64(i).? };
     }
 
@@ -60,6 +60,20 @@ pub const Obj = struct {
 
         _ = c.json_object_object_add(self.obj, key, o);
     }
+
+    ///////////////////////////////////
+    // ** Array functions **
+    /////////////////////////////////
+
+    pub fn arrayAdd(self: *Obj, value: ?*Obj) void {
+        // TODO: Check type and error return
+        // TODO: Check if it can accept a null value
+
+        // We need the json-c object or null, not the zig object
+        const o = if (value) |i| i.obj else null;
+
+        _ = c.json_object_array_add(self.obj, o);
+    }
 };
 
 // TODO: Create wrapper types that statically check and know there

src/main.zig

@@ -15,7 +15,7 @@ pub fn main() !void {
 
     var tags = [2]Item.Tag{
         .{ .name = "title", .value = "clean room" },
-        .{ .name = "task", .value = "explosion preventer" },
+        .{ .name = "task", .value = null },
     };
 
     var item = Item{ .id = null, .tags = &tags };
@@ -24,13 +24,19 @@ pub fn main() !void {
 
     var jobj = json.Obj.newObject();
 
+    jobj.objectAdd("id", &json.Obj.newInt64(item.id.?));
+
+    var jtags = json.Obj.newObject();
+    jobj.objectAdd("tags", &jtags);
+
+
     for (tags) |tag_i| {
         const jtag = if (tag_i.value) |value|
             &json.Obj.newString(value)
         else
             null;
 
-        jobj.objectAdd(tag_i.name, jtag);
+        jtags.objectAdd(tag_i.name, jtag);
     }
 
     defer jobj.deinit();