var:
  covid_daily:
    friendly_name: "Daily Covid count"
    initial_value: 0
    icon: mdi:virus-outline
  covid_yesterday_total:
    friendly_name: "Yesterdays NZ Cumulative Total Covid Cases"
    initial_value: 0
    icon: mdi:virus-outline

automation:
  - id: add_covid_confirmed_stats_only_if_increases
    alias: add_covid_confirmed_stats_only_if_increases
    #description:
    #  "Check new state of sensor.new_zealand_coronavirus_confirmed and store it
    #  in input_number.new_zealand_coronavirus_confirmed_previous_value if it has increased"
    trigger:
      - platform: state
        entity_id: sensor.new_zealand_coronavirus_confirmed
    condition:
      - condition: template
        value_template:
          "{{ (states('sensor.new_zealand_coronavirus_confirmed') | float
          > states('var.covid_yesterday_total') | float) }}"
    action:
      - service: var.set
        data_template:
          entity_id: var.covid_daily
          value:
            "{{ states('sensor.new_zealand_coronavirus_confirmed') | float - states('var.covid_yesterday_total')
            | float }}"
      - service: var.set
        data_template:
          entity_id: var.covid_yesterday_total
          value: "{{ states('sensor.new_zealand_coronavirus_confirmed') | float }}"

sensor:
  - platform: statistics
    entity_id: sensor.coronavirus_totals_normalised
    sampling_size: 200000
    state_characteristic: mean
    max_age:
      days: 1
    name: "Coronavirus Statistics"
  - platform: template
    sensors:
      coronavirus_totals_normalised:
        friendly_name: "NZ Coronavirus Totals (Normalised)"
        value_template: >
          {% set new_state = states('sensor.new_zealand_coronavirus_confirmed') | float %}
          {% if new_state >= states('input_number.new_zealand_coronavirus_confirmed_previous_value') | float %}
            {{ new_state }}
          {% else %}
            {{ states('input_number.new_zealand_coronavirus_confirmed_previous_value') | float }}
          {% endif %}