/*
 * This program source code file is part of SystemK, a library in the KTag project.
 *
 * 🛡️ <https://ktag.clubk.club> 🃞
 *
 * Copyright © 2016-2025 Joseph P. Kearney and the KTag developers.
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Affero General Public License for more
 * details.
 *
 * There should be a copy of the GNU Affero General Public License in the LICENSE
 * file in the root of this repository.  If not, see <http://www.gnu.org/licenses/>.
 */

/* Include Files */
#include "SystemK.h"

static void Starting_Game__Instigating_Entry(StateMachineContext_T * context);
static void Starting_Game__Instigating_Do(StateMachineContext_T * context);
static void Starting_Game__Instigating_Exit(StateMachineContext_T * context);

static TickType_t Period_Start = 0;
static uint_fast8_t N_Lights_Lit = 0;

static const char *KLOG_TAG = "STATE_STARTING_GAME__INSTIGATING";

//! Activities for the **Instigating** substate of the **Starting Game** state.
const StateActivity_T STATE_STARTING_GAME__INSTIGATING_Activities =
{
   .Entry = Starting_Game__Instigating_Entry,
   .Do = Starting_Game__Instigating_Do,
   .Exit = Starting_Game__Instigating_Exit
};

//! Sets up the Instigating substate.
/*!
 *  \param  context Context in which this substate is being run.
 */
static void Starting_Game__Instigating_Entry(StateMachineContext_T * context)
{
    // First of all, enter the state containing this substate.
    Starting_Game_Entry(context);
    
    LOG("Entering the Instigating substate of the Starting Game state.");
    
    Set_Time_Remaining_in_Game(UINT32_MAX);
    uint32_t start_game_time_in_ms;
    (void) SETTINGS_get_uint32_t(SYSTEMK_SETTING_T_START_GAME_in_ms, &start_game_time_in_ms);
    Set_Time_Remaining_Until_Countdown(start_game_time_in_ms);
    BLE_UpdateInstigationPacket(Get_Time_Remaining_in_Game_in_ms(), Get_Time_Remaining_Until_Countdown_in_ms());
    if (BLE_ScanAndAdvertise() != SYSTEMK_RESULT_SUCCESS)
    {
        KLOG_ERROR(KLOG_TAG, "Couldn't start BLE!");
    }
    
    Period_Start = xTaskGetTickCount();
}

//! Executes the Instigating substate.
/*!
 *  \param  context Context in which this substate is being run.
 */
static void Starting_Game__Instigating_Do(StateMachineContext_T * context)
{
    portBASE_TYPE xStatus;
    static KEvent_T Event;
    
    xStatus = Receive_KEvent(&Event);
    
    if (xStatus == pdPASS)
    {
        switch (Event.ID)
        {
            case KEVENT_PLAY_PRESSED_ON_REMOTE:
                Transition_For_Event(context, STATE_STARTING_GAME__COUNTING_DOWN, &Event);
                break;

            default:
                // All other events are ignored in this state.
                ProcessUnhandledEvent(&Event);
                break;
        }
    }
    
    // Wait for T_start_game before proceeding.
    uint32_t start_game_time_in_ms;
    (void) SETTINGS_get_uint32_t(SYSTEMK_SETTING_T_START_GAME_in_ms, &start_game_time_in_ms);
    if (GetTimeInState_in_ms(context) > start_game_time_in_ms)
    {
        static KEvent_T Event;
        Event.ID = KEVENT_AUTOMATIC_TRANSITION;
        Event.Data = NULL;
        Transition_For_Event(context, STATE_STARTING_GAME__COUNTING_DOWN, &Event);
    }
    else
    {
        uint32_t period_time_in_ms = (xTaskGetTickCount() - Period_Start) * portTICK_PERIOD_MS;
        uint32_t time_remaining_until_countdown_in_ms = start_game_time_in_ms - GetTimeInState_in_ms(context);
        Set_Time_Remaining_Until_Countdown(time_remaining_until_countdown_in_ms);
        
        if (period_time_in_ms > 150)
        {
            BLE_UpdateInstigationPacket(Get_Time_Remaining_in_Game_in_ms(), Get_Time_Remaining_Until_Countdown_in_ms());
            
            // Toggle the lights.
            if (N_Lights_Lit == 0)
            {
                N_Lights_Lit = 5;
            }
            else
            {
                N_Lights_Lit = 0;
            }
            NeoPixelsAction_T neopixels_action = {.ID = NEOPIXELS_COUNTDOWN, .Prominence = NEOPIXELS_FOREGROUND, .Data = (void *)&N_Lights_Lit};
            xQueueSend(xQueueNeoPixels, &neopixels_action, 0);
            
            // Start a new period.
            Period_Start = xTaskGetTickCount();
        }
    }
}

//! Cleans up the Instigating substate.
/*!
 *  \param  context Context in which this substate is being run.
 */
static void Starting_Game__Instigating_Exit(StateMachineContext_T * context)
{
    // Nothing to do.
}