Merge branch 'layer_shell' into dev

merge

src/lua/Hook.zig

@@ -0,0 +1,60 @@
+const Hook = @This();
+
+const std = @import("std");
+const zlua = @import("zlua");
+
+const THook = @import("../types/Hook.zig");
+const Utils = @import("../Utils.zig");
+
+const gpa = std.heap.c_allocator;
+const server = &@import("../main.zig").server;
+
+/// ---Create a new hook on an event
+/// ---@param string|string[] event(s)
+/// ---@param table options
+pub fn add(L: *zlua.Lua) i32 {
+  L.checkType(2, .table);
+
+  errdefer Utils.oomPanic();
+  var hook: *THook = try gpa.create(THook);
+  hook.events = try std.ArrayList([]const u8).initCapacity(gpa, 1);
+
+  // We support both a string and a table of strings as the first value of
+  // add. Regardless of which type is passed in we create an arraylist of
+  // []const u8's
+  if (L.isTable(1)) {
+    L.pushNil();
+    while (L.next(1)) {
+      if (L.isString(-1)) {
+        const s = L.checkString(-1);
+        try hook.events.append(gpa, s);
+      }
+      L.pop(1);
+    }
+  } else if (L.isString(1)) {
+    const s = L.checkString(1);
+    try hook.events.append(gpa, s);
+  }
+
+  _ = L.pushString("callback");
+  _ = L.getTable(2);
+  if (L.isFunction(-1)) {
+    hook.options.lua_cb_ref_idx = L.ref(zlua.registry_index) catch {
+      L.raiseErrorStr("Lua error check your config", .{}); // TODO: Give more descriptive error
+    };
+  }
+
+  try server.hooks.append(gpa, hook);
+
+  for (hook.events.items) |value| {
+    try server.events.put(value, hook);
+  }
+
+  return 0;
+}
+
+pub fn del(L: *zlua.Lua) i32 {
+  // TODO: impl
+  _ = L;
+  return 0;
+}