// vim: shiftwidth=4 tabstop=4 noexpandtab

package main

import (
	"time"
)

type Camera struct {
	statemachine Machine
}

func NewCamera() Camera {
	return Camera{
		statemachine: Machine{
			name: "camera",
			initial: "idle",
			states: StateMap{
				"idle": MachineState{
					on: TransitionMap{
						"take_single_picture": MachineTransition{
							to: "single_picture",
						},
					},
				},
				"single_picture": MachineState{
					on: TransitionMap{
						"single_picture_taken": MachineTransition{
							to: "idle",
						},
					},
				},
			},
			api: make(chan string),
			state_listeners: make([]*(chan string), 0),
			hook: runCameraHooks,
		},
	}
}

func runCameraHooks(last string, next string) {

	if last == "idle" && next == "single_picture" {
		// TODO implement launch of python subprocess here
		go func() {
			time.Sleep(1 * time.Second)
			camera.statemachine.SendEvent("single_picture_taken")
		}()
	}
}

func (cam *Camera) run() {
	cam.statemachine.Run()
}