lights.go

package hue

import (
	"fmt"
	"time"
)

const timeFormatISO8601 = "2006-01-02T15:04:05"

func (u *User) GetLights() ([]Light, error) {
	url := fmt.Sprintf("/api/%s/lights", u.Username)

	var lightsMap map[string]interface{}
	err := u.Bridge.client.Get(url, &lightsMap)
	if err != nil {
		return nil, err
	}

	lights, err := parseLights(lightsMap)
	if err != nil {
		return nil, err
	}

	return lights, nil
}

func (u *User) GetNewLights() ([]Light, time.Time, error) {
	url := fmt.Sprintf("/api/%s/lights/new", u.Username)

	var lightsMap map[string]interface{}
	err := u.Bridge.client.Get(url, &lightsMap)
	if err != nil {
		return nil, time.Time{}, err
	}

	lastScanString, ok := lightsMap["lastscan"].(string)
	if !ok {
		return nil, time.Time{}, NewAPIParseError("string", lightsMap["lastscan"], "lastscan")
	}
	lastScan, err := time.Parse(timeFormatISO8601, lastScanString)
	if err != nil {
		return nil, time.Time{}, err
	}
	delete(lightsMap, "lastscan")

	lights, err := parseLights(lightsMap)
	if err != nil {
		return nil, time.Time{}, err
	}

	return lights, lastScan, nil
}

func (u *User) SearchForNewLights() error {
	url := fmt.Sprintf("/api/%s/lights", u.Username)

	_, err := u.Bridge.client.Post(url, nil)
	if err != nil {
		return err
	}

	return nil
}

func (u *User) GetLightAttributes(lightId string) (*LightAttributes, error) {
	url := fmt.Sprintf("/api/%s/lights/%s", u.Username, lightId)

	var lightAttributes *LightAttributes
	err := u.Bridge.client.Get(url, &lightAttributes)
	if err != nil {
		return nil, err
	}

	return lightAttributes, nil
}

func (u *User) SetLightName(lightId string, name string) error {
	url := fmt.Sprintf("/api/%s/lights/%s", u.Username, lightId)

	request := map[string]string{"name": name}
	_, err := u.Bridge.client.Put(url, &request)
	if err != nil {
		return err
	}

	return nil
}

func (u *User) SetLightState(lightId string, state *LightState) error {
	url := fmt.Sprintf("/api/%s/lights/%s/state", u.Username, lightId)

	_, err := u.Bridge.client.Put(url, &state)
	if err != nil {
		return err
	}

	return nil
}

func (u *User) SetGroupState(groupId string, state *LightState) error {
	url := fmt.Sprintf("/api/%s/groups/%s/action", u.Username, groupId)

	_, err := u.Bridge.client.Put(url, &state)
	if err != nil {
		return err
	}

	return nil
}

func parseLights(lightsMap map[string]interface{}) ([]Light, error) {
	lights := make([]Light, 0, 10)

	for lightId, lightInterface := range lightsMap {
		lightMap, ok := lightInterface.(map[string]interface{})
		if !ok {
			return nil, NewAPIParseError("map[string]interface{}", lightInterface, "lights map")
		}
		name, ok := lightMap["name"].(string)
		if !ok {
			return nil, NewAPIParseError("string", lightMap["name"], "lights name")
		}
		lights = append(lights, Light{Id: lightId, Name: name})
	}

	return lights, nil
}