Convert the main menu screen to lua lol

1 files changed, 96 insertions, 0 deletions

diff --git a/src/lua/bridge.cpp b/src/lua/bridge.cpp
new file mode 100644
index 00000000..acc64c31
--- /dev/null
+++ b/src/lua/bridge.cpp
@@ -0,0 +1,96 @@
+/*
+ * Copyright 2023 jacqueline <me@jacqueline.id.au>
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#include "bridge.hpp"
+
+#include <memory>
+#include <string>
+
+#include "esp_log.h"
+#include "event_queue.hpp"
+#include "lua.h"
+#include "lua.hpp"
+#include "lvgl.h"
+#include "service_locator.hpp"
+#include "ui_events.hpp"
+
+namespace lua {
+
+[[maybe_unused]] static constexpr char kTag[] = "lua_bridge";
+static constexpr char kBridgeKey[] = "bridge";
+
+static auto open_settings_fn(lua_State* state) -> int {
+  events::Ui().Dispatch(ui::internal::ShowSettingsPage{
+      .page = ui::internal::ShowSettingsPage::Page::kRoot});
+  return 0;
+}
+
+static auto open_now_playing_fn(lua_State* state) -> int {
+  events::Ui().Dispatch(ui::internal::ShowNowPlaying{});
+  return 0;
+}
+
+static auto open_browse_fn(lua_State* state) -> int {
+  int index = luaL_checkinteger(state, 1);
+  events::Ui().Dispatch(ui::internal::IndexSelected{
+      .id = static_cast<uint8_t>(index),
+  });
+  return 0;
+}
+
+static const struct luaL_Reg kLegacyUiFuncs[] = {
+    {"open_settings", open_settings_fn},
+    {"open_now_playing", open_now_playing_fn},
+    {"open_browse", open_browse_fn},
+    {NULL, NULL}};
+
+static auto lua_legacy_ui(lua_State* state) -> int {
+  luaL_newlib(state, kLegacyUiFuncs);
+  return 1;
+}
+
+static auto get_indexes(lua_State* state) -> int {
+  lua_pushstring(state, kBridgeKey);
+  lua_gettable(state, LUA_REGISTRYINDEX);
+  Bridge* instance = reinterpret_cast<Bridge*>(lua_touserdata(state, -1));
+
+  lua_newtable(state);
+
+  auto db = instance->services().database().lock();
+  if (!db) {
+    return 1;
+  }
+
+  for (const auto& i : db->GetIndexes()) {
+    lua_pushstring(state, i.name.c_str());
+    lua_rawseti(state, -2, i.id);
+  }
+
+  return 1;
+}
+
+static const struct luaL_Reg kDatabaseFuncs[] = {{"get_indexes", get_indexes},
+                                                 {NULL, NULL}};
+
+static auto lua_database(lua_State* state) -> int {
+  luaL_newlib(state, kDatabaseFuncs);
+  return 1;
+}
+
+Bridge::Bridge(system_fsm::ServiceLocator& services, lua_State& s)
+    : services_(services), state_(s) {
+  lua_pushstring(&s, kBridgeKey);
+  lua_pushlightuserdata(&s, this);
+  lua_settable(&s, LUA_REGISTRYINDEX);
+
+  luaL_requiref(&s, "legacy_ui", lua_legacy_ui, true);
+  lua_pop(&s, 1);
+
+  luaL_requiref(&s, "database", lua_database, true);
+  lua_pop(&s, 1);
+}
+
+}  // namespace lua