package main

import (
	"errors"
	"fmt"
	"log"
)

type Controller struct {
	Model *Model
	View  *View
}

func (c *Controller) LogAndShowError(err error) {
	log.Printf("[ERR ] app: %s", err.Error())
	c.View.PopupError(err)
}

func (c *Controller) DiscoverDevices() {
	go func() {
		devices, err := c.Model.DiscoverDevices()
		if err != nil {
			c.LogAndShowError(fmt.Errorf("error discovering devices %v", err))
			return
		}
		if len(devices) == 0 {
			c.LogAndShowError(errors.New("no devices found"))
			return
		}
		c.View.MainScreen(devices)
	}()
	c.View.LoadingScreen()
}

func (c *Controller) StartCasting(selected string, mediaURL string) {

	if selected == "" {
		c.LogAndShowError(errors.New("no device selected"))
		return
	}

	err := c.Model.ConnectToDevice(selected)
	if err != nil {
		c.LogAndShowError(fmt.Errorf("error connecting to device %v", err))
		return
	}
	go func() {
		err = c.Model.StartCast(mediaURL)
		if err != nil {
			c.LogAndShowError(fmt.Errorf("error starting cast %v", err))
			c.DiscoverDevices()
			return
		}
	}()
	c.View.CastingScreen(selected)

}

// Note: these are app codes, they are NOT related to fcast opcodes!
const (
	ActionPlay        = 0
	ActionPause       = 1
	ActionSkipBack    = 2
	ActionSkipForward = 3
	ActionStop        = 4
	ActionVolumeUp    = 5
	ActionVolumeDown  = 6
	ArgsActionSeek    = 7 // seekTime

	RespPlaybackUpdate = 0 // videoRuntime, currentTime
)

func (c *Controller) PlayerAction(action int, args ...float32) {
	err := c.Model.PlayerAction(action, args...)
	if err != nil {
		c.LogAndShowError(fmt.Errorf("error performing action %v", err))
	}
}

func (c *Controller) ExitCasting() {
	c.PlayerAction(ActionStop)
	c.DiscoverDevices()
}

func (c *Controller) ReceiverResponse(action int, args ...float32) {
	c.View.UpdateCastingScreen(action, args...)
}