#include "esp_log.h"
#include "shutdown_handlers.h"

static const char *TAG = "shutdown_hdl";

#define MAX_SHUTDOWN_HANDLERS 10
static int shutdown_handlers_next = 0;
static shutdown_handler_t shutdown_handlers[MAX_SHUTDOWN_HANDLERS];

// ---------------------------

esp_err_t cspemu_add_shutdown_handler(shutdown_handler_t handler)
{
    ESP_LOGI(TAG, "+ new shutdown handler %p", handler);
    if (shutdown_handlers_next < MAX_SHUTDOWN_HANDLERS) {
        shutdown_handlers[shutdown_handlers_next++] = handler;
        return ESP_OK;
    } else {
        return ESP_FAIL;
    }
}

void cspemu_run_shutdown_handlers(void)
{
    ESP_LOGI(TAG, "Running shutdown handlers");
    for (int i = 0; i < shutdown_handlers_next; i++) {
        shutdown_handlers[i]();
    }
    // prevent them being run multiple times
    shutdown_handlers_next = 0;
}