#include "Application.h"
#include "CustomCommand.h"
#include "LedController.h"
#include "cmd_nvs.h"
#include "cmd_system.h"
#include "driver/uart.h"
#include "esp_console.h"
#include "esp_log.h"
#include "esp_system.h"
#include "esp_vfs_dev.h"
#include "esp_vfs_fat.h"
#include "linenoise/linenoise.h"
#include "nvs.h"
#include "nvs_flash.h"
#include <stdio.h>

#define PROMPT_STR CONFIG_IDF_TARGET

#define MOUNT_PATH "/data"
#define HISTORY_PATH MOUNT_PATH "/history.txt"

static const char *TAG = "main";

static void initialize_nvs();
static void initialize_filesystem();
static void initialize_console();

extern "C" void app_main() {
    const char *prompt = LOG_COLOR_I PROMPT_STR "> " LOG_RESET_COLOR;
    initialize_nvs();
    initialize_filesystem();
    initialize_console();
    Application::instance()->initialize();
    Application::instance()->setField("author", "amass");
    esp_console_register_help_command();
    register_system_common();
    register_system_sleep();
    register_custom();
    register_nvs();

    LedController::instance()->initialize();

    while (true) {
        char *line = linenoise(prompt);
        if (line == NULL) { /* Break on EOF or error */
            // break;
            continue;
        }
        if (strlen(line) > 0) {
            linenoiseHistoryAdd(line);
            linenoiseHistorySave(HISTORY_PATH);
        }

        int ret;
        esp_err_t err = esp_console_run(line, &ret);
        if (err == ESP_ERR_NOT_FOUND) {
            printf("Unrecognized command\n");
        } else if (err == ESP_ERR_INVALID_ARG) {
            // command was empty
        } else if (err == ESP_OK && ret != ESP_OK) {
            printf("Command returned non-zero error code: 0x%x (%s)\n", ret, esp_err_to_name(ret));
        } else if (err != ESP_OK) {
            printf("Internal error: %s\n", esp_err_to_name(err));
        }
        /* linenoise allocates line buffer on the heap, so need to free it */
        linenoiseFree(line);
    }
    esp_console_deinit();
}

static void initialize_console() {
    fflush(stdout);
    fsync(fileno(stdout));

    setvbuf(stdin, NULL, _IONBF, 0);

    esp_vfs_dev_uart_port_set_rx_line_endings(CONFIG_ESP_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CR);
    esp_vfs_dev_uart_port_set_tx_line_endings(CONFIG_ESP_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CRLF);

    uart_config_t uart_config = {};
    uart_config.baud_rate = CONFIG_ESP_CONSOLE_UART_BAUDRATE;
    uart_config.data_bits = UART_DATA_8_BITS;
    uart_config.parity = UART_PARITY_DISABLE;
    uart_config.stop_bits = UART_STOP_BITS_1;
    uart_config.source_clk = UART_SCLK_REF_TICK;
    ESP_ERROR_CHECK(uart_driver_install(static_cast<uart_port_t>(CONFIG_ESP_CONSOLE_UART_NUM), 256, 0, 0, NULL, 0));
    ESP_ERROR_CHECK(uart_param_config(static_cast<uart_port_t>(CONFIG_ESP_CONSOLE_UART_NUM), &uart_config));

    esp_vfs_dev_uart_use_driver(CONFIG_ESP_CONSOLE_UART_NUM);

    esp_console_config_t console_config = {};
    console_config.max_cmdline_args = 8;
    console_config.max_cmdline_length = 256;
    console_config.hint_color = atoi(LOG_COLOR_CYAN);

    ESP_ERROR_CHECK(esp_console_init(&console_config));

    linenoiseSetMultiLine(1);

    linenoiseSetCompletionCallback(&esp_console_get_completion);
    linenoiseSetHintsCallback((linenoiseHintsCallback *)&esp_console_get_hint);

    linenoiseHistorySetMaxLen(100);
    linenoiseSetMaxLineLen(console_config.max_cmdline_length);

    linenoiseAllowEmpty(false);
    linenoiseHistoryLoad(HISTORY_PATH);
}

static void initialize_nvs() {
    esp_err_t err = nvs_flash_init();
    if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
        ESP_ERROR_CHECK(nvs_flash_erase());
        err = nvs_flash_init();
    }
    ESP_ERROR_CHECK(err);
}

static void initialize_filesystem(void) {
    static wl_handle_t wl_handle;
    esp_vfs_fat_mount_config_t config;
    memset(&config, 0, sizeof(esp_vfs_fat_mount_config_t));
    config.max_files = 4;
    config.format_if_mount_failed = true;
    esp_err_t err = esp_vfs_fat_spiflash_mount_rw_wl(MOUNT_PATH, "storage", &config, &wl_handle);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "Failed to mount FATFS (%s)", esp_err_to_name(err));
        return;
    }
}