#include "Config.hpp"

#include <math.h>

#include "FS.h"
#include "SPIFFS.h"
Config config;

void Config::Init() {
    SPIFFS.begin(true);
    File f = SPIFFS.open("/config.json", FILE_READ);
    if (!f) {
        SetDefaults();
        return;
    }
    DeserializationError err = deserializeJson(conf_json, f);
    if (err == DeserializationError::Ok) {
        Load();
    } else {
        SetDefaults();
    }
    f.close();
}

void Config::SetDefaults() {
    Serial.println("Setting default config");
    // Set default MAC address
    trackside_mac[0] = 0x34;
    trackside_mac[1] = 0x85;
    trackside_mac[2] = 0x18;
    trackside_mac[3] = 0xa9;
    trackside_mac[4] = 0x3d;
    trackside_mac[5] = 0xfc;

    // Set default kart ID
    kart_id = esp_random();

    // Save the defaults to SPIFFS
    Save();
}

void Config::Save() {
    conf_json.to<JsonObject>();
    JsonArray arr = conf_json["mac"].to<JsonArray>();
    for (int i = 0; i < 6; i++) {
        arr.add<int>(trackside_mac[i]);
    }
    conf_json["kart_id"] = kart_id;
    String out;
    serializeJson(conf_json, out);
    File f = SPIFFS.open("/config.json", FILE_WRITE, true);
    f.print(out);
    f.close();
    Serial.printf("Config saved: %s\n", out.c_str());
}

void Config::Load() {
    JsonArray arr = conf_json["mac"];
    for (int i = 0; i < 6; i++) {
        trackside_mac[i] = arr[i];
    }
    kart_id = conf_json["kart_id"];
}