substitutions:
  device_name: toiletlight
  friendly_name: "Toilet Light"

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

esp32:
  variant: esp32c3
  cpu_frequency: 80MHz
  framework:
    type: esp-idf
    sdkconfig_options:
      CONFIG_BOOTLOADER_SKIP_VALIDATE_ON_POWER_ON: y
      CONFIG_BOOTLOADER_LOG_LEVEL_NONE: y
      CONFIG_LOG_DEFAULT_LEVEL_NONE: y

preferences:
  flash_write_interval: 30s

# Enable logging
logger:
  # disable logging for much faster startup
  level: NONE
  # 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
  # enabling power saves causes jitter!
  power_save_mode: NONE

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

captive_portal:

light:
  - id: toilet
    platform: color_temperature
    name: "Toilet"
    color_temperature: pwm_warm_cold
    # we are using pwm_dim_mapped to transform between min+max-power
    # otherwise one can use:
    #brightness: pwm_dim
    #gamma_correct: 1.0
    brightness: pwm_dim_mapped
    cold_white_color_temperature: 6500 K
    warm_white_color_temperature: 3000 K
    default_transition_length: 300ms
    initial_state:
      state: true
      brightness: 100%
      color_temperature: 4500 K
    restore_mode: RESTORE_DEFAULT_ON

output:
  - id: pwm_dim
    platform: ledc
    pin: GPIO1
    frequency: 3900 Hz
    channel: 0
    min_power: 0.04
    zero_means_zero: true

  - id: pwm_warm
    platform: ledc
    pin: GPIO3
    # original mcu uses 3900Hz
    frequency: 24000 Hz
    channel: 2

  - id: pwm_cold
    platform: ledc
    pin: GPIO4
    # original mcu uses 3900Hz
    frequency: 24000 Hz
    channel: 3
    phase_angle: 180°

  - platform: template
    id: pwm_warm_cold
    type: float
    write_action:
      - lambda: |-
          auto warm = id(pwm_warm), cold = id(pwm_cold);
          ESP_LOGD("cal", "warm: %f, cold: %f, phase: %f", state, 1-state, state*360.0);
          warm->set_level(state);
          cold->set_level(1 - state);
          cold->set_phase_angle(state * 360.0);

  # map output to range (min_power, max_power)
  - platform: template
    id: pwm_dim_mapped
    type: float
    write_action:
      - lambda: |-
          auto output = id(pwm_dim);
          float min = output->get_min_power(), max = output->get_max_power();
          float newlvl =  (state) ? state * (max - min) + min : 0;
          ESP_LOGD("cal", "dim: %f -> %f", state, newlvl);
          output->set_level(newlvl);
          if (newlvl == 0) {
            id(pwm_warm).set_level(0);
            id(pwm_cold).set_level(0);
          }

# closed loop not implemented
#sensor:
#  - id: adc_cs
#    platform: adc
#    pin: GPIO0
#    accuracy_decimals: 2
#    attenuation: auto
#    update_interval: 1s

globals:
  - id: saved_brightness
    type: float
    restore_value: yes
    initial_value: '1.0'
  - id: saved_color_temp
    type: float
    restore_value: yes
    initial_value: '222.0' # 4500K

binary_sensor:
  - platform: homeassistant
    name: "Nightlight enabled from Home Assistant"
    entity_id: input_boolean.toilet_light_nightlight
    on_state_change:
      then:
      - if:
          condition:
            lambda: 'return x.has_value() && x.value();'
          then:
            - globals.set:
                id: saved_brightness
                value: !lambda 'return id(toilet).current_values.get_brightness();'
            - globals.set:
                id: saved_color_temp
                value: !lambda 'return id(toilet).current_values.get_color_temperature();'
            - light.turn_on:
                id: toilet
                brightness: 1%
                color_temperature: 3000 K
          else:
            - light.turn_on:
                id: toilet
                brightness: !lambda 'return id(saved_brightness);'
                color_temperature: !lambda 'return id(saved_color_temp);'