package hue

import (
	"context"
	"fmt"
	lucifer3 "git.aiterp.net/lucifer3/server"
	"git.aiterp.net/lucifer3/server/commands"
	"git.aiterp.net/lucifer3/server/events"
	"git.aiterp.net/lucifer3/server/internal/gentools"
	"sync"
	"time"
)

func NewService() lucifer3.ActiveService {
	return &service{
		bridges: map[string]*Bridge{},
	}
}

type service struct {
	mu sync.Mutex

	bridges map[string]*Bridge
}

func (s *service) Active() bool {
	return true
}

func (s *service) HandleCommand(bus *lucifer3.EventBus, command lucifer3.Command) {
	switch command := command.(type) {
	case commands.PairDevice:
		{
			if hostname, ok := command.Matches("hue"); ok {
				go func() {
					timeout, cancel := context.WithTimeout(context.Background(), time.Second*30)
					defer cancel()

					client := NewClient(hostname, "")

					token, err := client.Register(timeout)
					if err != nil {
						return
					}

					bus.RunEvent(events.DeviceAccepted{
						ID:     command.ID,
						APIKey: token,
					})
				}()
			}
		}

	case commands.SetStateBatch:
		for _, bridge := range s.bridges {
			bridge.SetStates(command)
		}

	case commands.SetState:
		if sub, ok := command.Matches("hue"); ok {
			if s.bridges[sub] != nil {
				s.bridges[sub].SetStates(gentools.OneItemMap(command.ID, command.State))
			}
		}

	case commands.ConnectDevice:
		if sub, ok := command.Matches("hue"); ok {
			if s.bridges[sub] != nil {
				s.bridges[sub].cancel()
				delete(s.bridges, sub)
			}

			ctx, cancel := context.WithCancel(context.Background())
			client := NewClient(sub, command.APIKey)

			bridge := NewBridge(sub, client)
			bridge.ctx = ctx
			bridge.cancel = cancel
			s.bridges[sub] = bridge

			go func() {
				for bridge.ctx.Err() == nil {
					ctx2, cancel2 := context.WithCancel(ctx)

					err := bridge.Run(ctx2, bus)
					cancel2()
					if err != nil {
						bus.RunEvent(events.DeviceFailed{
							ID:    command.ID,
							Error: fmt.Sprintf("Run failed: %s", err),
						})
					}

					select {
					case <-time.After(time.Second * 5):
					case <-ctx.Done():
						return
					}
				}
			}()
		}
	}
}

func (s *service) HandleEvent(_ *lucifer3.EventBus, event lucifer3.Event) {}