switch-api-rs

A simple REST API reporting MacBook CPU, power and display status

• rewrite in Rust of my Node.js project switch-api
• adapted to work on MacBook ARM64 architecture
• used in conjunction with Home Assistant RESTful Switch integration

usage and integration inside home-assistant

control mac display

• GET /display : get current screen state, sleeping or not (tested on MacBook ARM64 architecture)
• POST /display body=ON|OFF : switch screeen state

switch:
  - platform: rest
    name: Macbook Display
    resource: 'http://mymac:8182/display'
    scan_interval: 30

get battery power status (on macOS Mojave)

• GET /power

sensor:
  - platform: rest
    name: Macbook battery
    resource: 'http://mymac:8182/power'
    json_attributes:
      - isOnAC
      - isOnBattery
      - isCharged
      - chargingStatus
      - chargePercent
      - remainingChargeTime
    value_template: '{{ value_json.chargePercent }}'
    unit_of_measurement: '%'
    scan_interval: 120

get cpu average on 1mn

• GET /cpu

sensor:
  - platform: rest
    name: Macbook CPU
    resource: 'http://mymac:8182/cpu'
    value_template: '{{ value | round(1) }}'
    unit_of_measurement: '%'
    scan_interval: 60

installation

# build from source
git clone https://github.com/ycardon/switch-api-rs
cd switch-api-rs
cargo install --path .

# start with user session
<edit to adjust path> local.switch-api-rs.plist
cp local.switch-api-rs.plist ~/Library/LaunchAgents/
launchctl load Library/LaunchAgents/local.switch-api-rs.plist
launchctl start local.switch-api-rs

useful commands

• sleep display: pmset displaysleepnow
• wake display: caffeinate -u -t 1
• test display state : pmset -g powerstate | grep DCPDPDeviceProxy | wc -l result <1 is sleeping
• battery power status : pmset -g batt (and some parsing)

TODO scan_interval: 10