#include "app_ai_if_config.h"
#include "cmsis_nvic.h"
#include "cmsis_os.h"
#include "stdbool.h"
#include "stdint.h"
#include "string.h"
#include "tool_msg.h"
//#include "hal_timer_raw.h"
#include "app_thread.h"
#include "communication_sysapi.h"
#include "hal_bootmode.h"
#include "hal_cmu.h"
#include "hal_iomux.h"
#include "hal_uart.h"
#include "pmu.h"
#include "tgt_hardware.h"

//#define FLASH_BASE                              0x6C000000
//#define FLASH_TO_FLASHX(d)                      ((uint32_t)(d) & 0x0FFFFFFF)

#define WAIT_TRACE_TIMEOUT MS_TO_TICKS(200)

static uint32_t send_timeout = MS_TO_TICKS(500);

static const struct HAL_UART_CFG_T uart_cfg = {
    HAL_UART_PARITY_NONE,
#ifdef __KNOWLES
    HAL_UART_STOP_BITS_2,
#else
    HAL_UART_STOP_BITS_1,
#endif
    HAL_UART_DATA_BITS_8,
    HAL_UART_FLOW_CONTROL_NONE, // RTC/CTS pins might be unavailable for some
                                // chip packages
    HAL_UART_FIFO_LEVEL_1_2,
    HAL_UART_FIFO_LEVEL_1_2,
#ifdef __PC_CMD_UART__
    115200,
#else
    921600,
#endif
    true,
    false,
    false,
};
#ifdef __PC_CMD_UART__
static const enum HAL_UART_ID_T comm_uart = HAL_UART_ID_0;
#else
#ifdef CHIP_BEST2300P
static const enum HAL_UART_ID_T comm_uart = HAL_UART_ID_2;
#else
static const enum HAL_UART_ID_T comm_uart = HAL_UART_ID_1;
#endif
#endif
static volatile enum UART_DMA_STATE uart_dma_rx_state = UART_DMA_IDLE;
static volatile uint32_t uart_dma_rx_size = 0;
static bool uart_opened = false;

static volatile bool cancel_xfer = false;

static uint32_t xfer_err_time = 0;
static uint32_t xfer_err_cnt = 0;

#ifdef __KNOWLES

#include "Knowles_mic_demo.h"
#include "audio_dump.h"
#include "cqueue.h"

uint32_t kw_start_index = 0;
uint32_t kw_end_index = 0;
bool is_markers_read_done = false;

#ifdef KNOWLES_UART_DATA
uint8_t out_buf[FRAME_SIZE];
uint8_t found = 0;

static osMutexId uart_audio_pcmbuff_mutex_id = NULL;
osMutexDef(uart_audio_pcmbuff_mutex);

typedef enum { PP_PING = 0, PP_PANG = 1 } FIR_PP_T;

#define PP_PINGPANG(v) (v == PP_PING ? PP_PANG : PP_PING)

static FIR_PP_T pp_index = PP_PING;
static uint32_t uart_dma_interval;

#define knowles_uart_packet_len FRAME_SIZE // 640//20MS
static uint8_t
    audio_data_receive_buf[knowles_uart_packet_len * 2]; // ping_pong_buffer

#ifdef SYSTEM_USE_PSRAM
#include "hal_location.h"
#define AMA_STREAM_UART_FIFO_SIZE (1024 * 32)
PSRAM_BSS_LOC static unsigned char ama_uart_buff[AMA_STREAM_UART_FIFO_SIZE];
#else
#define AMA_STREAM_UART_FIFO_SIZE (1024 * 16)
static unsigned char ama_uart_buff[AMA_STREAM_UART_FIFO_SIZE];
#endif
static CQueue ama_uart_queue = {0};

extern osThreadId knowles_uart_audio_tid;

#define APP_UART_FLOW_CONTROL_TIMEOUT_INTERVEL (12)

static void app_uart_flow_control_timeout_timer_cb(void const *n);
osTimerDef(APP_UART_FLOW_CONTROL_TIMEOUT,
           app_uart_flow_control_timeout_timer_cb);
osTimerId app_uart_flow_control_timeout_timer_id = NULL;

static void app_uart_flow_control_timeout_timer_cb(void const *n) {
  uint32_t available_buffer;
  unsigned char get_next_chunk_cmd[4];
  smart_mic_get_nextchunk_cmd(get_next_chunk_cmd);

  available_buffer = avil_len_of_the_fifo();
  available_buffer = AMA_STREAM_UART_FIFO_SIZE - available_buffer;

  TRACE(1, "UART_FLOW_CONTROL: Available UART Buffer %d\n", available_buffer);
  if (available_buffer > 1024) {
    // TRACE(0,"More than 1024 bytes availble hence sending next chunk command
    // \n");
    send_data(get_next_chunk_cmd, 4);
    osTimerStop(app_uart_flow_control_timeout_timer_id);
    osTimerStart(app_uart_flow_control_timeout_timer_id,
                 APP_UART_FLOW_CONTROL_TIMEOUT_INTERVEL);
  } else {
    // TRACE(0,"no buffer available hence triggering timer for 10ms\n");
    osTimerStop(app_uart_flow_control_timeout_timer_id);
    osTimerStart(app_uart_flow_control_timeout_timer_id,
                 APP_UART_FLOW_CONTROL_TIMEOUT_INTERVEL);
  }
}

void ama_uart_stream_fifo_init() {
  if (uart_audio_pcmbuff_mutex_id == NULL) {
    uart_audio_pcmbuff_mutex_id =
        osMutexCreate((osMutex(uart_audio_pcmbuff_mutex)));
  }

  pp_index = PP_PING;

  if (knowles_uart_audio_tid) {
    osSignalClear(knowles_uart_audio_tid, UART_OUT_SIGNAL_ID);
  }

  memset(audio_data_receive_buf, 0, sizeof(audio_data_receive_buf));
  InitCQueue(&ama_uart_queue, AMA_STREAM_UART_FIFO_SIZE,
             (CQItemType *)ama_uart_buff);
}

uint32_t ama_uart_get_fifo_data(uint8_t *buf) {
  uint32_t avail = 0;

  avail = LengthOfCQueue(&ama_uart_queue);
  if (avail > 0) {
    if (avail < knowles_uart_packet_len) {
      TRACE(2, "%s: Invalid  UART STREAM SIZE: %d", __FUNCTION__, avail);
      return 0;
    } else {
      // TRACE(1,"UART_GET_len %d",knowles_uart_packet_len);
      if (!DeCQueue(&ama_uart_queue, buf, knowles_uart_packet_len))
        return knowles_uart_packet_len;
      TRACE(2, "%s: queue get data error len %d", __func__,
            knowles_uart_packet_len);
      return 0;
    }
  } else {
    TRACE(0, "uart no stream to get");
    return 0;
  }
}

uint32_t avil_len_of_the_fifo() { return LengthOfCQueue(&ama_uart_queue); }

extern "C" void OS_NotifyEvm(void);

void send_message() { OS_NotifyEvm(); }
#endif
#endif

static void uart_break_handler(void) {
  TRACE(0, "****** Handle break ******");

  cancel_xfer = true;
  hal_uart_stop_dma_recv(comm_uart);
  hal_uart_stop_dma_send(comm_uart);
  uart_dma_rx_state = UART_DMA_ERROR;
}

extern "C" uint8_t app_ai_is_stream_running(void);
static void uart_rx_dma_handler(uint32_t xfer_size, int dma_error,
                                union HAL_UART_IRQ_T status) {
  if (status.BE) {
    uart_break_handler();
    return;
  }

  // The DMA transfer has been cancelled
#ifndef KNOWLES_UART_DATA
  if (uart_dma_rx_state != UART_DMA_START) {
    return;
  }
#endif
  uart_dma_rx_size = xfer_size;
  if (dma_error || status.FE || status.OE || status.PE || status.BE) {
    TRACE(2, "UART-RX Error: dma_error=%d, status=0x%08x", dma_error,
          status.reg);
    uart_dma_rx_state = UART_DMA_ERROR;
  } else {
    // TRACE(1,"UART-RX OK: rx_size=%d", uart_dma_rx_size);
    uart_dma_rx_state = UART_DMA_DONE;
    int ret = 0;
    // TRACE(1,"UART DMA INTERUPT
    // TIME=%d",hal_sys_timer_get()-uart_dma_interval);
    uart_dma_interval = hal_sys_timer_get();
    if (app_ai_is_stream_running()) {
      if (!EnCQueue(&ama_uart_queue,
                    (uint8_t *)&audio_data_receive_buf[pp_index *
                                                       knowles_uart_packet_len],
                    FRAME_SIZE))
        ret = FRAME_SIZE;
      if (ret < FRAME_SIZE) {
        TRACE(2, "%s:WARNING !!! UART STREAM OVERFLOW Dropping %d Bytes",
              __FUNCTION__, (FRAME_SIZE - ret));
      }

      osSignalSet(knowles_uart_audio_tid, UART_OUT_SIGNAL_ID);
    }
    pp_index = PP_PINGPANG(pp_index);
  }
}

void recv_data_state_get(enum UART_DMA_STATE *state) {
  *state = uart_dma_rx_state;
}

void recv_data_reset(void) {
  union HAL_UART_IRQ_T mask;
  mask.reg = 0;
  mask.BE = 1;
  hal_uart_irq_set_mask(comm_uart, mask);
  uart_dma_rx_state = UART_DMA_IDLE;
}

void init_transport(void) {
  union HAL_UART_IRQ_T mask;
  struct HAL_UART_CFG_T comm_uart_cfg;
#ifdef KNOWLES_UART_DATA
  // audio_dump_init(320, 1);
  ama_uart_stream_fifo_init();
#endif
  if (!uart_opened) {
#ifdef __PC_CMD_UART__
    hal_iomux_set_uart0();
#else
#ifdef CHIP_BEST2300P
    hal_iomux_init(cfg_pinmux_uart, ARRAY_SIZE(cfg_pinmux_uart));
#else
    hal_iomux_set_uart1();
#endif
#endif
    memcpy(&comm_uart_cfg, &uart_cfg, sizeof(comm_uart_cfg));
    hal_uart_open(comm_uart, &comm_uart_cfg);
    mask.reg = 0;
    mask.BE = 1;
    mask.FE = 1;
    mask.OE = 1;
    mask.PE = 1;

    hal_uart_irq_set_dma_handler(comm_uart, uart_rx_dma_handler, NULL);
    hal_uart_irq_set_mask(comm_uart, mask);
    uart_opened = true;
  }

  cancel_xfer = false;

  hal_uart_flush(comm_uart, 0);
#ifdef KNOWLES_UART_DATA
  if (recv_data(&audio_data_receive_buf[0], knowles_uart_packet_len * 2) < 0)
    TRACE(1, "%s error", __func__);
  smart_mic_stream_header_parser_init(FRAME_SIZE);
#endif

  app_uart_flow_control_timeout_timer_id =
      osTimerCreate(osTimer(APP_UART_FLOW_CONTROL_TIMEOUT), osTimerOnce, NULL);
}

void deinit_transport(void) {
  union HAL_UART_IRQ_T mask;

  mask.reg = 0;

  // audio_dump_clear_up(); //added by punith

  hal_uart_stop_dma_recv(comm_uart); // punith
  uart_dma_rx_state = UART_DMA_IDLE;
  hal_uart_irq_set_mask(comm_uart, mask);
  hal_uart_irq_set_dma_handler(comm_uart, NULL, NULL);
  hal_uart_close(comm_uart);

  hal_uart_flush(comm_uart, 0);
  uart_opened = false;
  cancel_xfer = true;

  osTimerStop(app_uart_flow_control_timeout_timer_id);
  if (osTimerDelete(app_uart_flow_control_timeout_timer_id) != osOK) {
    TRACE(0, "app_uart_flow_control_timeout_timer_id Failed !!!!");
  }
}

void reinit_transport(void) {
  union HAL_UART_IRQ_T mask;
  struct HAL_UART_CFG_T comm_uart_cfg;

  uart_opened = false;
  memcpy(&comm_uart_cfg, &uart_cfg, sizeof(comm_uart_cfg));
  hal_uart_open(comm_uart, &comm_uart_cfg);
  mask.reg = 0;
  mask.BE = 1;
  mask.FE = 1;
  mask.OE = 1;
  mask.PE = 1;
  hal_uart_irq_set_dma_handler(comm_uart, uart_rx_dma_handler, NULL);
  hal_uart_irq_set_mask(comm_uart, mask);
  uart_opened = true;

  cancel_xfer = false;

  hal_uart_flush(comm_uart, 0);
}

void set_send_timeout(uint32_t timeout) { send_timeout = MS_TO_TICKS(timeout); }

int debug_read_enabled(void) {
  return !!(hal_sw_bootmode_get() & HAL_SW_BOOTMODE_READ_ENABLED);
}

int debug_write_enabled(void) {
  return !!(hal_sw_bootmode_get() & HAL_SW_BOOTMODE_WRITE_ENABLED);
}

static int uart_send_data(const unsigned char *buf, unsigned int len) {
  uint32_t start;
  uint32_t sent = 0;

  start = hal_sys_timer_get();
  while (sent < len) {
    while (!cancel_xfer && !hal_uart_writable(comm_uart) &&
           hal_sys_timer_get() - start < send_timeout)
      ;
    if (cancel_xfer) {
      break;
    }
    if (hal_uart_writable(comm_uart)) {
      hal_uart_putc(comm_uart, buf[sent++]);
    } else {
      break;
    }
  }

  if (sent != len) {
    return 1;
  }

  return 0;
}

int send_data(const unsigned char *buf, unsigned int len) {
  if (cancel_xfer) {
    return -1;
  }

  return uart_send_data(buf, len);
}

static struct HAL_DMA_DESC_T dma_desc[17] = {0};

static int uart_recv_data_dma(unsigned char *buf, unsigned int len,
                              unsigned int expect) {
  int ret;
  union HAL_UART_IRQ_T mask;

  uint32_t desc_cnt = ARRAY_SIZE(dma_desc);

  if (uart_dma_rx_state != UART_DMA_IDLE) {
    ret = -3;
    goto _no_state_exit;
  }

  uart_dma_rx_state = UART_DMA_START;
  uart_dma_rx_size = 0;

#ifdef KNOWLES_UART_DATA
  ret = hal_uart_dma_recv_pingpang(comm_uart, buf, expect, &dma_desc[0],
                                   &desc_cnt);
#else
  ret = hal_uart_dma_recv(comm_uart, buf, expect, &dma_desc[0], &desc_cnt);
#endif

  if (ret) {
    uart_dma_rx_state = UART_DMA_ERROR;
    goto err_exit;
  }

  mask.reg = 0;
  mask.BE = 1;
  mask.FE = 1;
  mask.OE = 1;
  mask.PE = 1;
  // mask.RT = 1;
  hal_uart_irq_set_mask(comm_uart, mask);

_no_state_exit:
  TRACE(2, "%s ret %d", __func__, ret);
  return ret;
err_exit:
  TRACE(2, "%s err_exit ret %d", __func__, ret);
  return -1;
}

int recv_data(unsigned char *buf, unsigned int len) {
  TRACE(3, "%s %d %d", __func__, cancel_xfer, len);
  if (cancel_xfer) {
    return -1;
  }
  return uart_recv_data_dma(buf, len, len);
}

int recv_data_dma(unsigned char *buf, unsigned int len, unsigned int expect) {
  if (cancel_xfer) {
    return -1;
  }

  return uart_recv_data_dma(buf, len, expect);
}

static int uart_handle_error(void) {
  TRACE(0, "****** Send break ******");

  // Send break signal, to tell the peer to reset the connection
  hal_uart_break_set(comm_uart);
  osDelay(100);
  hal_uart_break_clear(comm_uart);

  return 0;
}

int handle_error(void) {
  int ret = 0;
  uint32_t err_time;

  osDelay(200);

  if (!cancel_xfer) {
    ret = uart_handle_error();
  }

  xfer_err_cnt++;
  err_time = hal_sys_timer_get();
  if (err_time - xfer_err_time > MS_TO_TICKS(5000)) {
    xfer_err_cnt = 0;
  }
  xfer_err_time = err_time;
  if (xfer_err_cnt < 2) {
    osDelay(500);
  } else if (xfer_err_cnt < 5) {
    osDelay(1000);
  } else {
    osDelay(2000);
  }

  return ret;
}

static int uart_cancel_input(void) {
  hal_uart_flush(comm_uart, 0);
  return 0;
}

int cancel_input(void) { return uart_cancel_input(); }

void system_reboot(void) { hal_cmu_sys_reboot(); }

void system_shutdown(void) { pmu_shutdown(); }

void system_set_bootmode(unsigned int bootmode) {
  bootmode &= ~(HAL_SW_BOOTMODE_READ_ENABLED | HAL_SW_BOOTMODE_WRITE_ENABLED);
  hal_sw_bootmode_set(bootmode);
}

void system_clear_bootmode(unsigned int bootmode) {
  bootmode &= ~(HAL_SW_BOOTMODE_READ_ENABLED | HAL_SW_BOOTMODE_WRITE_ENABLED);
  hal_sw_bootmode_clear(bootmode);
}

unsigned int system_get_bootmode(void) { return hal_sw_bootmode_get(); }

void wait_trace_finished(void) {
  uint32_t time;
  int idle_cnt = 0;

  time = hal_sys_timer_get();

  while (idle_cnt < 2 && hal_sys_timer_get() - time < WAIT_TRACE_TIMEOUT) {
    osDelay(10);
    idle_cnt = hal_trace_busy() ? 0 : (idle_cnt + 1);
  }
}

unsigned int get_current_time(void) { return hal_sys_timer_get(); }

#ifdef KNOWLES_UART_DATA
uint8_t *uart_stream_buf;
bool send_start_speech = false;
extern bool is_markers_read_done;
#endif
#ifdef KNOWLES_UART_DATA
osThreadId knowles_uart_audio_tid = NULL;
static void uart_data_process_thread(const void *arg);
osThreadDef(uart_data_process_thread, (osPriorityAboveNormal), 1, (1024 * 12),
            "UART_DATA");

int app_ai_voice_uart_audio_init() {
  ama_uart_stream_fifo_init();
  if (knowles_uart_audio_tid == NULL)
    knowles_uart_audio_tid =
        osThreadCreate(osThread(uart_data_process_thread), NULL);
  if (knowles_uart_audio_tid == NULL) {
    TRACE(0, "[UART AUDIO]Create thread error\n");
    return -1;
  }

  return 0;
}
void uart_data_process_thread(const void *arg) {
  uint32_t ret = 0;
  uint32_t frame_len = 0;
  // uint32_t stime,etime;
  // stime=hal_sys_timer_get();

  while (1) {
    // TRACE(0,"---in uart_process_thread\n");
    osEvent evt;

    if (avil_len_of_the_fifo() <= 640) {
      evt = osSignalWait(0x0, osWaitForever);
    }

    // TRACE(1,"#####Available len of fifo  %d####",avil_len_of_the_fifo());
    // get role from signal value
    if (evt.status == osEventSignal) {
      if (evt.value.signals & UART_OUT_SIGNAL_ID) {
        if (app_ai_is_stream_running()) {
          frame_len = ama_uart_get_fifo_data(uart_stream_buf);
        } else {
          frame_len = 0;
        }

        if (frame_len != 0) {
          TRACE(1, "--data start encode %d", frame_len);
          // DUMP8("%02x ",uart_stream_buf,10);

          // stime=hal_sys_timer_get();

          ret = voice_compression_handle(app_ai_get_encode_type(),
                                         uart_stream_buf,
                                         VOB_PCM_SIZE_TO_SAMPLE_CNT(640),
                                         app_ai_is_algorithm_engine_reset());
          app_ai_set_algorithm_engine_reset(false);

          ai_function_handle(API_DATA_SEND, NULL, 0);

          // etime=hal_sys_timer_get();
          // TRACE(1,"OPUS COST TIME %d", TICKS_TO_MS(etime-stime));
          // TRACE(2,"%s ====>sys freq calc : %d\n", __func__,
          // hal_sys_timer_calc_cpu_freq(50, 0));
          audio_dump_add_channel_data(0, (short *)uart_stream_buf,
                                      frame_len / 2);
          audio_dump_run();
          send_message();
          if (ret < 0) {
            goto __EXCEPTION;
          }
        }
      }
    }

    continue;

  __EXCEPTION:
    app_ai_voice_stop_stream();
  }
}
#endif