#include "app.h"

#include <ESPmDNS.h>
#include <LittleFS.h>

void applyLed() {
  uint8_t pct = constrain(ledBrightness, 0, 100);
  uint8_t duty = map(pct, 0, 100, 0, 255);
  if (ledInverted) duty = 255 - duty;
  analogWrite(LED_BUILTIN, duty);
}

void applyPump() {
  digitalWrite(PUMP_PIN, pumpEnabled ? PUMP_ACTIVE_LEVEL : !PUMP_ACTIVE_LEVEL);
}

void factoryReset() {
  prefs.clear();
  LittleFS.remove(LOG_FILE_PATH);
  appendLog(LOG_SECURITY_AUDIT, "factory reset requested");
}

void checkFactoryResetPin() {
  pinMode(FACTORY_RESET_PIN, INPUT_PULLUP);
  if (digitalRead(FACTORY_RESET_PIN) != FACTORY_RESET_ACTIVE_LEVEL) return;
  uint32_t start = millis();
  while (millis() - start < FACTORY_RESET_HOLD_MS) {
    delay(100);
    if (digitalRead(FACTORY_RESET_PIN) != FACTORY_RESET_ACTIVE_LEVEL) {
      return;
    }
  }
  factoryReset();
  ESP.restart();
}

bool connectWifi() {
  String ssid = prefString("wifiSsid", "");
  String pass = prefString("wifiPass", "");
  if (!ssid.length()) return false;
  String name = deviceName();
  WiFi.mode(WIFI_STA);
  WiFi.setHostname(name.c_str());
  if (!networkDhcp) {
    IPAddress ip;
    IPAddress gateway;
    IPAddress subnet;
    IPAddress dns1;
    IPAddress dns2;
    bool ok = ip.fromString(networkIp) && gateway.fromString(networkGateway) && subnet.fromString(networkSubnet);
    if (ok) {
      if (!networkDns1.length() || !dns1.fromString(networkDns1)) dns1 = gateway;
      if (!networkDns2.length() || !dns2.fromString(networkDns2)) dns2 = IPAddress(0, 0, 0, 0);
      if (!WiFi.config(ip, gateway, subnet, dns1, dns2)) appendLog(LOG_WARN, "static IP configuration failed; continuing with DHCP");
    } else {
      appendLog(LOG_WARN, "static IP configuration is incomplete or invalid; continuing with DHCP");
    }
  }
  WiFi.begin(ssid.c_str(), pass.c_str());
  appendLog(LOG_INFO, "connecting to WiFi " + ssid);
  uint32_t start = millis();
  while (WiFi.status() != WL_CONNECTED && millis() - start < 20000) {
    delay(250);
  }
  if (WiFi.status() == WL_CONNECTED) {
    MDNS.begin(name.c_str());
    appendLog(LOG_INFO, "WiFi connected " + WiFi.localIP().toString());
    return true;
  }
  appendLog(LOG_WARN, "WiFi connection failed; entering setup AP");
  return false;
}