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substitutions:
  devicename: "gosund_sp111"
  upper_devicename: "Gosund SP111"
  # Higher value gives lower watt readout
  current_res: "0.00280"
  # Lower value gives lower voltage readout. In my case of about 15 of those devices this value is closest to my voltage meter
  voltage_div: "648"

esphome:
  name: $devicename

esp8266:
  board: esp8285
# This allows the device to restore the last saved relay state, either "ON" or "OFF" for the switch later in this config
  restore_from_flash: true

preferences:
  flash_write_interval: 1min  # set to 5min to prevent wearing out the onboard flash module too quickly
  
# Enable logging
logger:
  baud_rate: 0
  
# Enable Home Assistant API
api:
  encryption:
    key: "REDACTED"

ota:
  password: "REDACTED"

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  ap:

captive_portal:

# see: https://esphome.io/components/time.html
time:
  - platform: homeassistant
    id: homeassistant_time

# Enable Web server
web_server:
  port: 80

text_sensor:
  - platform: version
    name: "${devicename} - Version"
    icon: mdi:cube-outline

binary_sensor:
  - platform: status
    name: "${devicename} - Status"
    device_class: connectivity

  # toggle relay on/off
  - platform: gpio
    pin:
      number: GPIO13
      mode: INPUT_PULLUP
      inverted: True
    id: "${devicename}_button_state"
    on_press:
      - switch.toggle: button_switch

sensor:
  - platform: wifi_signal
    name: "${devicename} - Wifi Signal"
    update_interval: 60s
    icon: mdi:wifi

  - platform: uptime
    name: "${devicename} - Uptime"
    update_interval: 60s
    icon: mdi:clock-outline

  - platform: total_daily_energy
    name: "${devicename} - Todays Usage"
    power_id: "power_wattage"
    filters:
      # Multiplication factor from W to kW is 0.001
      - multiply: 0.001
    unit_of_measurement: kWh
    icon: mdi:calendar-clock

  - platform: adc
    pin: VCC
    name: "${devicename} - VCC Volt"
    icon: mdi:flash-outline

  - platform: hlw8012
    sel_pin:
      number: GPIO12
      inverted: True
    cf_pin: GPIO05
    cf1_pin: GPIO04
    change_mode_every: 4
    current_resistor: ${current_res}
    voltage_divider: ${voltage_div}
    update_interval: 3s

    current:
      name: "${devicename} - Ampere"
      unit_of_measurement: A
      accuracy_decimals: 3
      icon: mdi:current-ac

    voltage:
      name: "${devicename} - Volt"
      unit_of_measurement: V
      accuracy_decimals: 1
      icon: mdi:flash-outline

    power:
      name: "${devicename} - Watt"
      unit_of_measurement: W
      id: "power_wattage"
      icon: mdi:gauge

status_led:
  pin:
    number: GPIO02
    inverted: True
  id: led_blue

output:
  - platform: gpio
    pin: GPIO00
    inverted: true
    id: led_red

switch:
  - platform: template
    name: "${devicename} - Switch"
    icon: mdi:power
    optimistic: true
# This is where the "restore_from_flash" comes in. I set it to try to restore from flash and, if that fails, set it to ON
    restore_mode: RESTORE_DEFAULT_ON
    lambda: 'return id(relay).state;'
    id: button_switch
    turn_on_action:
      - switch.turn_on: relay
      - output.turn_on: led_red
    turn_off_action:
      - switch.turn_off: relay
      - output.turn_off: led_red
  - platform: gpio
    pin: GPIO15
    id: relay