##########################################################################################
##########################################################################################
# BYD ATTO3 12V Battery Monitor 
# Monitoring the status of a vehicle 12V battery with 
# an esp8266 (D1 Mini).  It will obviously only
# transmit when the vehicle is within wifi range. 
# Voltage is measured with a resistor voltage divider
# into the analogue GPIO on the esp8266.
# https://zorruno.com/2022/vehicle-12v-battery-monitoring/
##########################################################################################
##########################################################################################

##########################################################################################
# SPECIFIC DEVICE VARIABLE SUBSTITUTIONS
# If NOT using a secrets file, just replace these with the passwords etc (in quotes)
##########################################################################################
substitutions:
  # Device Naming 
  device_name: "esp-attobattery"
  friendly_name: "Atto3 12V Battery Monitor"
  description_comment: "Atto3 12V Battery Monitor (when home)"
  device_area: "Garage" # Allows ESP device to be automatically linked to an 'Area' in Home Assistant.  

  # Project Naming
  project_name: "Generic ESP8266.D1 Mini" # Project Details 
  project_version: "v1.0"  # Project V denotes release of yaml file, allowing checking of deployed vs latest version

  # Passwords & Secrets
  api_key: !secret esp-api_key # unfortunately you can't use substitutions inside secrets names
  ota_pass: !secret esp-ota_pass # unfortunately you can't use substitutions inside secrets names
  static_ip_address: !secret esp-attobattery_ip
  mqtt_command_main_topic: !secret mqtt_command_main_topic
  mqtt_status_main_topic: !secret mqtt_status_main_topic

  # MQTT LOCAL Controls
  mqtt_device_name: "atto-battery"
  mqtt_command_topic: "${mqtt_command_main_topic}/${mqtt_device_name}" # Topic we will use to command this locally without HA
  mqtt_status_topic: "${mqtt_status_main_topic}/${mqtt_device_name}" # Topic we will use to view status locally without HA

  # Device Settings
  log_level: "INFO" # Define logging level: NONE, ERROR, WARN, INFO, DEBUG (Default), VERBOSE, VERY_VERBOSE
  update_interval: "60s" # update time for for general sensors etc

  wake_interval: "20s"
  sleep_interval: "300s"
  mqtt_fail_sleep: "1h"   # If MQTT is unavailable after boot wait, sleep this long

##########################################################################################
# PACKAGES: Included Common Packages
# https://esphome.io/components/packages.html
##########################################################################################
packages:
  #### WIFI, Network (Static/DHCP/IPV6 etc), Fallback AP, Safemode ####
  common_wifi: !include
    file: common/network_common.yaml
    vars:
      local_device_name: "${device_name}"
      local_static_ip_address: "${static_ip_address}"
      local_ota_pass: "${ota_pass}"

  #### HOME ASSISTANT API (choose encryption or no encryption options) ####
  common_api: !include
    file: common/api_common.yaml
    #file: common/api_common_noencryption.yaml
    vars:
      local_api_key: "${api_key}"

  #### MQTT ####
  common_mqtt: !include
    file: common/mqtt_common.yaml
    vars:
      local_device_name: "${device_name}"
  
  #### WEB PORTAL ####
  common_webportal: !include common/webportal_common.yaml
  
  #### SNTP (Only use if you want/need accurate timeclocks) ####
  #common_sntp:      !include common/sntp_common.yaml

  #### DIAGNOSTICS Sensors ####
  diag_basic:       !include common/include_basic_diag_sensors.yaml
  diag_more:        !include common/include_more_diag_sensors.yaml
  #diag_debug:       !include common/include_debug_diag_sensors.yaml
  #diag_resetcount:  !include common/include_resetcount_diag_sensors.yaml

##########################################################################################
# ESPHome
# https://esphome.io/components/esphome.html
##########################################################################################
esphome:
  name: ${device_name}
  friendly_name: ${friendly_name}
  comment: ${description_comment} #appears on the esphome page in HA
  min_version: 2024.6.0
  on_boot:
    priority: 600
    then:
      # Default: do NOT deep sleep until explicitly enabled via MQTT
      - deep_sleep.prevent: deep_sleep_1
      - logger.log: "Deep sleep prevented by default on boot."

      # Fail-safe: wait up to 30s for MQTT; if not connected, sleep longer (backoff)
      - wait_until:
          condition:
            mqtt.connected:
          timeout: 30s
      - if:
          condition:
            not:
              mqtt.connected:
          then:
            - logger.log: "MQTT unreachable after 30s -> entering FALLBACK sleep for ${mqtt_fail_sleep}."
            - deep_sleep.enter:
                id: deep_sleep_1
                sleep_duration: ${mqtt_fail_sleep}   # override only this cycle
          else:
            - logger.log: "MQTT connected; awaiting '${mqtt_command_topic}/deepsleep' command."

##########################################################################################
# ESP Platform and Framework
# https://esphome.io/components/esp8266.html
# https://esphome.io/components/esp32.html
########################################################################################## 
esp8266:
  board: d1_mini
  framework:
    version: latest #recommended, latest or dev

##########################################################################################    
# ESPHome Logging Enable
# https://esphome.io/components/logger.html
########################################################################################## 
logger:
  level: "${log_level}"  #INFO Level suggested, or DEBUG for testing
  #baud_rate: 0 #set to 0 for no logging via UART, needed if you are using it for other serial things (eg PZEM)
  #esp8266_store_log_strings_in_flash: false
  #tx_buffer_size: 64

#############################################    
# Enable Over the Air Update Capability
# https://esphome.io/components/ota.html?highlight=ota
#############################################  
ota:
  - platform: web_server # Uncomment if you want to be able to do OTA with the web interface

##########################################################################################
# MQTT COMMANDS
# This adds device-specific MQTT command triggers to the common MQTT configuration.
##########################################################################################
mqtt:
  # Availability Topic
  birth_message:
    topic: ${mqtt_status_topic}/availability
    payload: online
  will_message:
    topic: ${mqtt_status_topic}/availability
    payload: offline

  # Control deep sleep over MQTT
  on_message:
    - topic: ${mqtt_command_topic}/deepsleep
      payload: "ON"
      then:
        - deep_sleep.allow: deep_sleep_1
        - logger.log: "Deep sleep ALLOWED via MQTT. Device will sleep when run_duration elapses."

    - topic: ${mqtt_command_topic}/deepsleep
      payload: "OFF"
      then:
        - deep_sleep.prevent: deep_sleep_1
        - logger.log: "Deep sleep PREVENTED via MQTT."

##########################################################################################
# Deep Sleep
# https://esphome.io/components/deep_sleep.html
##########################################################################################
deep_sleep:
  id: deep_sleep_1
  run_duration: ${wake_interval} 
  sleep_duration: ${sleep_interval} 
  
##########################################################################################
# SENSOR COMPONENT
# https://esphome.io/components/sensor/
##########################################################################################
sensor:
  - platform: adc
    pin: A0
    name: "Battery Voltage"
    id: battery_voltage
    update_interval: 4s
    retain: true
    filters:
      - multiply: 3.3
      - calibrate_linear:
        - 3.11 -> 14.00
        - 3.00 -> 13.50
        - 2.89 -> 13.00
        - 2.77 -> 12.50
        - 2.67 -> 12.00
        - 2.55 -> 11.50
        - 2.45 -> 11.00
        - 2.34 -> 10.50
        - 2.22 -> 10.00
        - 2.11 -> 09.50
        - 2.00 -> 09.00
      - delta: 0.05      # publish immediately if change >= 0.05 V
      - throttle: 2s     # avoid bursts if noisy
    on_value:
      then:
        - mqtt.publish:
            topic: "${mqtt_status_topic}/batteryvoltage"
            qos: 1
            retain: true
            payload: !lambda |-
              char buf[10];
              snprintf(buf, sizeof(buf), "%.2f", x);
              return std::string(buf);

