#ifdef ESP_PLATFORM
#include <Tactility/Tactility.h>
#include <Tactility/lvgl/Lvgl.h>
#include <Tactility/settings/McpSettings.h>
#include <Tactility/settings/WebServerSettings.h>
#include <Tactility/service/webserver/WebServerService.h>
#include <app/event.h>
#include <app/manifest.h>
#include <app/scheduler.h>
#include <lvgl_window_manager/window_manager.h>
#include <lvgl/widgets/toolbar.h>
#include <lvgl/lvgl.h>
#include <tactility/check.h>
#include <tactility/log.h>
#include <esp_netif.h>
#include <lvgl.h>
#include <string>

namespace tt::app::mcpsettings {
constexpr auto* TAG = "McpSettingsApp";
extern const ::AppManifest manifest;
namespace {
struct Context {
    uint32_t appInstanceId;
    settings::mcp::McpSettings mcpSettings;
    settings::webserver::WebServerSettings wsSettings;
    bool updated = false;
    lv_obj_t* switchMcpEnabled = nullptr;
    lv_obj_t* labelUrlValue = nullptr;
};

void updateUrlDisplay(Context* ctx) {
    if (ctx->labelUrlValue == nullptr) return;
    if (!ctx->mcpSettings.mcpEnabled) { lv_label_set_text(ctx->labelUrlValue, "Disabled"); return; }
    std::string url = "http://";
    bool ipAdded = false;
    for (const char* key : {"WIFI_STA_DEF", "WIFI_AP_DEF"}) {
        auto* netif = esp_netif_get_handle_from_ifkey(key);
        if (netif != nullptr) {
            esp_netif_ip_info_t info;
            if (esp_netif_get_ip_info(netif, &info) == ESP_OK && info.ip.addr != 0) {
                char ip[16]; snprintf(ip, sizeof(ip), IPSTR, IP2STR(&info.ip));
                url += ip; ipAdded = true; break;
            }
        }
    }
    if (!ipAdded) url += ctx->wsSettings.wifiMode == settings::webserver::WiFiMode::AccessPoint ? "192.168.4.1" : "Connecting...";
    if (url.starts_with("http://") && ctx->wsSettings.webServerPort != 80) url += ":" + std::to_string(ctx->wsSettings.webServerPort);
    url += "/api/mcp";
    lv_label_set_text(ctx->labelUrlValue, url.c_str());
}

void onBackPressed(lv_event_t* event) {
    auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
    app_event_emit_close(ctx->appInstanceId);
}

void onMcpEnabledSwitch(lv_event_t* event) {
    auto* ctx = static_cast<Context*>(lv_event_get_user_data(event));
    const bool enabled = lv_obj_has_state(ctx->switchMcpEnabled, LV_STATE_CHECKED);
    getMainDispatcher().dispatch([ctx, enabled] {
        ctx->mcpSettings.mcpEnabled = enabled; ctx->updated = true;
        lvgl_lock(); updateUrlDisplay(ctx); lvgl_unlock();
        if (!settings::mcp::save(ctx->mcpSettings)) LOG_W(TAG, "Failed to persist MCP settings");
        service::webserver::getPubsub()->publish(service::webserver::WebServerEvent::WebServerSettingsChanged);
        service::webserver::setWebServerEnabled(enabled);
    });
}

void createWidgets(lv_obj_t* parent, void* userData) {
    auto* ctx = static_cast<Context*>(userData);
    ctx->wsSettings = settings::webserver::loadOrGetDefault();
    lv_obj_set_flex_flow(parent, LV_FLEX_FLOW_COLUMN);
    lv_obj_set_style_pad_row(parent, 0, LV_STATE_DEFAULT);
    auto* toolbar = lvgl_toolbar_create(parent, "MCP Settings");
    lvgl_toolbar_set_nav_action(toolbar, LV_SYMBOL_CLOSE, onBackPressed, ctx);
    ctx->switchMcpEnabled = lvgl_toolbar_add_switch_action(toolbar);
    if (ctx->mcpSettings.mcpEnabled) lv_obj_add_state(ctx->switchMcpEnabled, LV_STATE_CHECKED);
    lv_obj_add_event_cb(ctx->switchMcpEnabled, onMcpEnabledSwitch, LV_EVENT_VALUE_CHANGED, ctx);
    auto* main = lv_obj_create(parent); lv_obj_set_flex_flow(main, LV_FLEX_FLOW_COLUMN); lv_obj_set_width(main, LV_PCT(100)); lv_obj_set_flex_grow(main, 1);
    auto* wrapper = lv_obj_create(main); lv_obj_set_size(wrapper, LV_PCT(100), LV_SIZE_CONTENT); lv_obj_set_style_pad_all(wrapper, 10, LV_STATE_DEFAULT); lv_obj_set_style_border_width(wrapper, 1, LV_STATE_DEFAULT); lv_obj_set_flex_flow(wrapper, LV_FLEX_FLOW_COLUMN); lv_obj_set_style_flex_cross_place(wrapper, LV_FLEX_ALIGN_START, 0);
    auto* title = lv_label_create(wrapper); lv_label_set_text(title, "MCP Endpoint URL:");
    ctx->labelUrlValue = lv_label_create(wrapper); updateUrlDisplay(ctx);
    auto* info = lv_label_create(main); lv_label_set_long_mode(info, LV_LABEL_LONG_WRAP); lv_obj_set_width(info, LV_PCT(95));
    lv_label_set_text(info, "MCP (Model Context Protocol) Screen service allows LLMs to interact with the device screen, audio, and tools directly.\n\nEndpoints:\n- POST /api/mcp (JSON-RPC tools)\n- POST /api/screen/raw (big-endian RGB565 writes)\n\nTo show the LLM canvas, select 'MCP Screen' in Settings -> Display -> Screensaver. The canvas also pops up automatically when an LLM sends a draw command.");
}

int32_t appMain(int, char**) {
    Context ctx{}; ctx.appInstanceId = app_scheduler_current_app_id(); ctx.mcpSettings = settings::mcp::loadOrGetDefault();
    TaskEventGroup group{}; task_event_group_construct(&group); AppEventSubscription sub{}; check(app_event_subscribe(&sub, &group) == ERROR_NONE);
    auto window = window_manager_create(ctx.appInstanceId, createWidgets, &ctx); bool close = false;
    while (!close) { task_event_group_wait_any(&group, nullptr, portMAX_DELAY); AppEvent event{}; while (app_event_poll(&sub, &event) == ERROR_NONE) if (event.type == APP_EVENT_CLOSE) { close = true; break; } }
    window_manager_remove(window); check(app_event_unsubscribe(&sub) == ERROR_NONE); task_event_group_destruct(&group); return 0;
}
}
extern const ::AppManifest manifest = { .id = "McpSettings", .name = "MCP Screen", .category = APP_CATEGORY_SETTINGS, .location = { APP_LOCATION_MEMORY, reinterpret_cast<void*>(appMain) }, .flags = 0, .stack = { .depth = 8192, .desired_memory_capability = 0 } };
}
#endif