# LED Matrix

substitutions:
  devicename: esp32-03
  xscrollpadding: "4" # in pix

esphome:
  name: $devicename
  platform: ESP32
  board: esp32dev

# Enable logging
logger:

# Enable Home Assistant API
api:

web_server:
  port: 80

ota:
  password: !secret ota_password

wifi:
  ssid: "W00t"
  password: !secret wifi_password

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

captive_portal:

########## Setup #######################


script:
  - id: start
    mode: restart
    then:
      - switch.turn_on: led_matrix_flash
      - delay: 60s
      - script.execute: stop
  - id: stop
    then:
      - script.stop: start
      - switch.turn_off: led_matrix_flash
      - homeassistant.service:
          service: input_text.set_value
          data:
            value: ""
            entity_id: input_text.led_matrix_text

text_sensor:
  - platform: homeassistant
    name: "Matrix Text"
    entity_id: input_text.led_matrix_text
    id: led_matrix_text
    internal: true
    on_value:
      - if:
          condition:
            text_sensor.state:
              id: led_matrix_text
              state: ""
          else:
            - script.execute: start

font:
  - id: tinyfont
    file: "ttf/lexis.ttf"
    size: 8
    glyphs: '''äöüß!"%()+,-_.:*=°?~#0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz'


light:
  - platform: fastled_clockless
    chipset: WS2812B
    pin: GPIO4
    num_leds: 256
    rgb_order: GRB
    name: "led_matrix"
    id: led_matrix_light
    default_transition_length: 0s
    color_correct: [50%, 50%, 50%]
    internal: true
    restore_mode: ALWAYS_ON

display:
  - platform: addressable_light
    id: led_matrix_display
    addressable_light_id: led_matrix_light
    width: 32
    height: 8
    pixel_mapper: |-
      if (x % 2 == 0) {
        return (x * 8) + y;
      }
      return (x * 8) + (7 - y);
    rotation: 0°
    update_interval: 200ms
    lambda: |-
          static int16_t xpos = it.get_width();
          const char * text = id(led_matrix_text).state.c_str();
          
          auto color = Color(0, 0, 255);
          int x_start, y_start;
          int width, height;
          
          it.get_text_bounds(
            0, 0, text, id(tinyfont), 
            TextAlign::TOP_LEFT,
            &x_start, &y_start, &width, &height
          ); 
          
          if(xpos < -1 * (width + $xscrollpadding)) {
            xpos = it.get_width();
          }
          
          if(width <= it.get_width()) {
            xpos = 0;
          }
          
          it.print(
            xpos,
            0, 
            id(tinyfont),
            color, 
            TextAlign::TOP_LEFT,
            text
          ); 
          xpos--;
          
switch:
  - platform: gpio
    pin: GPIO23
    name: "LED Matrix Flash"
    id: led_matrix_flash
    internal: true
    restore_mode: ALWAYS_OFF
    
binary_sensor:
  - platform: gpio
    pin:
      number: GPIO13
      inverted: true
      mode:
        input: true
        pullup: true
    name: "LED Matrix Confirm"
    id: led_matrix_confirm
    internal: true
    on_press:
      then:
        - script.execute: stop