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/*
* Copyright 2023 ailurux <ailuruxx@gmail.com>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#include "lua/lua_version.hpp"
#include <string>
#include "lua.hpp"
#include "lua/bridge.hpp"
#include "esp_app_desc.h"
#include "esp_log.h"
#include "lauxlib.h"
#include "lua.h"
#include "lua/lua_thread.hpp"
#include "luavgl.h"
#include "ui/themes.hpp"
namespace lua {
static auto set_subject(lua_State* L) -> int {
// Get the object and subject name from the stack
std::string subject_name = luaL_checkstring(L, -1);
lv_obj_t* obj = luavgl_to_obj(L, -2);
if (obj != NULL) {
ui::themes::Theme::instance()->ApplyStyle(obj, subject_name);
}
return 0;
}
static auto set_theme(lua_State* L) -> int {
std::string class_name;
luaL_checktype(L, -1, LUA_TTABLE);
lua_pushnil(L); /* first key */
while (lua_next(L, -2) != 0) {
/* uses 'key' (at index -2) and 'value' (at index -1) */
if (lua_type(L, -2) == LUA_TSTRING) {
class_name = lua_tostring(L, -2);
}
if (lua_type(L, -1) == LUA_TTABLE) {
// Nesting
lua_pushnil(L); // First key
while (lua_next(L, -2) != 0) {
// Nesting the second
int selector = -1;
lua_pushnil(L); // First key
while (lua_next(L, -2) != 0) {
int idx = lua_tointeger(L, -2);
if (idx == 1) {
// Selector
selector = lua_tointeger(L, -1);
} else if (idx == 2) {
// Style
lv_style_t* style = luavgl_to_style(L, -1);
if (style == NULL) {
ESP_LOGI("lua_theme", "Style was null or malformed");
return 0;
} else {
ui::themes::Theme::instance()->AddStyle(class_name, selector,
style);
}
}
lua_pop(L, 1);
}
lua_pop(L, 1);
}
}
/* removes 'value'; keeps 'key' for next iteration */
lua_pop(L, 1);
}
return 0;
}
static auto load_theme(lua_State* L) -> int {
std::string filename = luaL_checkstring(L, -1);
// Set the theme filename in non-volatile storage
Bridge* instance = Bridge::Get(L);
// Load the theme using lua
auto status = luaL_loadfile(L, filename.c_str());
if (status != LUA_OK) {
lua_pushboolean(L, false);
return 1;
}
status = lua::CallProtected(L, 0, 1);
if (status == LUA_OK) {
ui::themes::Theme::instance()->Reset();
set_theme(L);
instance->services().nvs().InterfaceTheme(filename);
lua_pushboolean(L, true);
} else {
lua_pushboolean(L, false);
}
return 1;
}
static auto theme_filename(lua_State* L) -> int {
Bridge* instance = Bridge::Get(L);
auto file = instance->services().nvs().InterfaceTheme().value_or("/lua/theme_light.lua");
lua_pushstring(L, file.c_str());
return 1;
}
static const struct luaL_Reg kThemeFuncs[] = {{"set", set_theme},
{"set_subject", set_subject},
{"load_theme", load_theme},
{"theme_filename", theme_filename},
{NULL, NULL}};
static auto lua_theme(lua_State* L) -> int {
luaL_newlib(L, kThemeFuncs);
return 1;
}
auto RegisterThemeModule(lua_State* L) -> void {
luaL_requiref(L, "theme", lua_theme, true);
lua_pop(L, 1);
}
} // namespace lua
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