node-tradfri-restapi

What

A simple REST-API implementation of node-tradfri with the following commands

• /tradfri/groupids will provide an array of group ids
• /tradfri/deviceids will provide an array of device ids
• /tradfri/groups will provide a full list of all groups including devices and meta data
• /tradfri/devices will provide a full list of all devices including meta data
• /tradfri/group/:groupid/:state will set the state of a device (on/off). E.g. /tradfri/device/11007/off
• /tradfri/device/:deviceid will get the status of a device, including brightness and color
• /tradfri/device/:deviceid/:state will set the state of a device (on/off). E.g. /tradfri/device/17101/on
• /tradfri/device/:deviceid/on?color=:color will set the color of a device, in hex, or 'cool', 'warm', 'normal'
• /tradfri/device/:deviceid/on?brightness=:brightness will set the brightness of a device, from 0 to 255
• In addition, adding ?transitionTime=30 (for example) to a color= or brightness= state change will animate the change over a number of tenths-of-a-second.

First release is a bit of a quick one. Exceptions needs to be managed and include toggle as an option. I did the API as I need to control my IKEA TRÅDFRI-lights with Node-RED but Node-RED does not support Node v7.x (I assume it will wait for the next LTS release) and a simple micro service is the short term solution to have it integrated and managed by Node-RED.

How

1. Setup libcoap as explained below
2. npm update to install node-tradfri and other dependencies
3. Copy ./config/default.json-sample as ./config/default.json and update with the IKEA hub information
4. Run using Node >7.6, or simply use nave:

nave use 7 node index.js

If you use systemd to manage your OS, eg. recent versions of Ubuntu Linux, then you can use the supplied tradfri-restapi.service file to perform start-up and job management. Edit the tradfri-restapi.service file to match your install directory, user, group and so forth, and then:

systemctl link `pwd`/tradfri-restapi.service
systemctl start tradfri-restapi
journalctl -f tradfri-restapi

Compiling libcoap

Install libcoap as described below for Debian/Ubuntu/Raspbian: (credits to homebridge-tradfri)

apt-get install libtool git build-essential install autoconf automake
git clone --recursive https://github.com/obgm/libcoap.git -b dtls
cd libcoap
git submodule update --init --recursive
./autogen.sh
./configure --disable-documentation --disable-shared
make

You'll find the coap-client binary in ./examples. This should be specified in the config/default.json file used above.