# Hardware: https://docs.thingpulse.com/guides/espaper-plus-kit/
#
# Programming via serial requires a serial converter. To program, the device has to be put in a
# programming mode. This is done by pressing the RESET (the rightmost) button while holding the
# middle button. But after setting up esphome and the WiFi credentials you can just keep flashing
# via OTA. After flashing via any method, you must do a manual reset.

# Epaper display that displays the amount of cash tracked by RevBank.

esphome:
  name: espaper
  friendly_name: Cash

esp8266:
  board: nodemcu


logger:

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

ota:
  platform: esphome
  password: !secret ota_password

mqtt:
  broker: !secret mqtt_server

sensor:
  - platform: wifi_signal
    name: "WiFi Signal dB"
    update_interval: 10s
    state_topic: bitlair/esphome/spacestate-bitlair/wifi_signal
    retain: false
  - platform: mqtt_subscribe
    id: cash
    topic: bitlair/pos/cash
    on_value:
      then:
        - component.update: epaper

text_sensor:
  - platform: version
    name: "ESPHome Version"
    hide_timestamp: true
    state_topic: bitlair/esphome/cash/version

font:
  - file: "gfonts://Roboto"
    id: font_label
    size: 32
  - file: "gfonts://Roboto"
    id: font_cash
    size: 56

spi:
  clk_pin: 14
  mosi_pin: 13

display:
  - platform: waveshare_epaper
    id: epaper
    model: 2.90in
    cs_pin: 15
    dc_pin: 5
    busy_pin: 4
    reset_pin: 2
    update_interval: 60s
    rotation: 270
    lambda: |-
      char label[32];
      snprintf(label, sizeof(label), "geld in kas");
      int label_w, label_h, _;
      const int label_y = 10;
      id(font_label).measure(label, &label_w, &_, &_, &label_h);
      it.printf(it.get_width()/2 - label_w/2, label_y, id(font_label), "%s", label);

      char cash_str[16];
      snprintf(cash_str, sizeof(cash_str), "€ %.02f", id(cash).state);
      int cash_w;
      id(font_cash).measure(cash_str, &cash_w, &_, &_, &_);
      it.printf(it.get_width()/2 - cash_w/2, label_y+label_h+2, id(font_cash), "%s", cash_str);