substitutions:
  device_name: printerswitch
  friendly_name: "Printer Switch"
  current_resistor: 0.0007978220592127652
  voltage_divider: 4422.084168336673
  # max power is 3450W for 15A and 2300W for 10A
  max_power: "3450"

esphome:
  name: ${device_name}
  friendly_name: ${friendly_name}

esp8266:
  board: esp01_1m

# Enable logging
logger:
  # make RXD / TXD available
  baud_rate: 0

# Enable Home Assistant API
api:
  encryption:
    key: !secret api_encryption_key

# OTA
ota:
  - platform: esphome
    password: !secret ota_password

# WiFi Credentials
wifi:
  domain: .lan
  ssid: !secret wifi_ssid
  password: !secret wifi_password
  # see https://github.com/esphome/issues/issues/1532
  power_save_mode: HIGH

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "${device_name} Hotspot"
    password: !secret wifi_ap_password

captive_portal:

binary_sensor:
  - platform: gpio
    name: "Button"
    device_class: power
    pin:
      number: GPIO1
      inverted: true
    on_press:
      - switch.toggle: relay
    internal: true

sensor:
  - platform: hlw8012
    model: BL0937
    sel_pin: GPIO12
    cf_pin: GPIO4
    cf1_pin: GPIO5
    current_resistor: ${current_resistor}
    voltage_divider: ${voltage_divider}
    voltage:
      id: voltage
      filters:
        - skip_initial: 2
    power:
      id: power
      internal: true
      filters:
        - skip_initial: 2
      on_value:
        then:
          # calculate current through P=U*I
          - lambda: id(current).publish_state(x / id(voltage).state);
          # idle power down. <5W
          - if:
              condition:
                for:
                  time: 5min
                  condition:
                    and:
                      - switch.is_on: relay
                      - lambda: return id(power).state < 5.0;
              then:
                - logger.log: "idle power down"
                - switch.turn_off: relay
      on_value_range:
        - above: ${max_power}
          then:
            - switch.turn_off: relay
    energy:
      id: energy
      internal: true
    update_interval: 1s
    initial_mode: "VOLTAGE"
    change_mode_every: never

  - platform: template
    id: current
    accuracy_decimals: 3
    update_interval: never
    internal: true

    # templates sensors for the ui. we only update the sensor on relay events or through interval
    # but only if switch is on. this way we don't push updates without changes to frontend
  - platform: template
    name: "Current"
    id: current_ui
    unit_of_measurement: "A"
    accuracy_decimals: 3
    icon: "mdi:flash-outline"
    update_interval: never

  - platform: template
    name: "Voltage"
    id: voltage_ui
    unit_of_measurement: "V"
    icon: "mdi:flash-outline"
    update_interval: never

  - platform: template
    name: "Power"
    id: power_ui
    unit_of_measurement: "W"
    icon: "mdi:flash-outline"
    update_interval: never

  - platform: template
    name: "Energy"
    id: energy_ui
    unit_of_measurement: "Wh"
    icon: "mdi:flash-outline"
    update_interval: never

switch:
  - platform: gpio
    name: "Relay"
    id: relay
    pin: GPIO14
    on_turn_on:
      - output.turn_on: led
      - lambda: id(current_ui).publish_state(id(current).state);
      - lambda: id(voltage_ui).publish_state(id(voltage).state);
      - lambda: id(power_ui).publish_state(id(power).state);
      - lambda: id(energy_ui).publish_state(id(energy).state);
    on_turn_off:
      - output.turn_off: led
      - lambda: id(current_ui).publish_state(0.0);
      - lambda: id(voltage_ui).publish_state(0.0);
      - lambda: id(power_ui).publish_state(0.0);
      - lambda: id(energy_ui).publish_state(0.0);

output:
  - platform: esp8266_pwm
    id: led
    pin: GPIO13

  - platform: gpio
    id: unused_gpio0
    pin:
      number: GPIO0
      mode: INPUT_PULLUP
  - platform: gpio
    id: unused_gpio2
    pin:
      number: GPIO2
      mode: INPUT_PULLUP
  - platform: gpio
    id: unused_gpio3
    pin:
      number: GPIO3
      mode: INPUT_PULLUP
  - platform: gpio
    id: unused_gpio15
    pin:
      number: GPIO15
      mode: INPUT_PULLUP
  - platform: gpio
    id: unused_gpio16
    pin:
      number: GPIO16
      mode: INPUT_PULLDOWN

interval:
  - interval: 10s
    then:
      - if:
          condition:
            switch.is_on: relay
          then:
            - lambda: id(current_ui).publish_state(id(current).state);
            - lambda: id(voltage_ui).publish_state(id(voltage).state);
            - lambda: id(power_ui).publish_state(id(power).state);
            - lambda: id(energy_ui).publish_state(id(energy).state);