const app = window.app ??= {}
const view = window.view ??= {}

const holdIntervals = 3
const holdIntervalLength = 200

import * as browser from './browser.js'
import * as player from './player.js'
import * as queue from './queue.js'
import * as main from '../main.js'

{
	window.addEventListener('keydown', OnKeydown)
	window.addEventListener('keyup', OnKeyup)	
}

export function Render() {
	Actions()
}

export function Actions() {
	let a = view.actions = {}

	a['EndCall'] = {
		name: 'Close Hiss',
		up() {
			main.saveState().then(() => window.close())
		}
	}

	a['ArrowRight'] = {
		name: 'Next Panel',
		up() {
			mode.Scroll(1)
		}
	}
	a['ArrowLeft'] = {
		name: 'Prev Panel',
		up() {
			mode.Scroll(-1)
		}
	}
	a['0'] = {
		
	}

	a['c'] = a.pausePlay = {
		hint: 'Pause/Play',
		up: player.TogglePausePlay
	}
	a['s'] = a.skip = {
		hint: 'Next',
		up: player.Next
	}
	a['+'] = a.volumeUp = {
		hint: 'Volume Up',
		down() {
			navigator.volumeUp()
		}
	}
	a['-'] = a.volumeDown = {
		hint: 'Volume Down',
		down() {
			navigator.volumeDown()
		}
	}

	switch(app.mode) {
		case mode.states.PLAYER:
			a[' '] = a['Enter'] = player.State() == player.states.PLAYING ?
				{
					hint: 'Play',
					up: player.Play
				} :
				{
					hint: 'Pause',
					up: player.Pause
				}
			a['ArrowUp'] = a.volumeUp
			a['ArrowDown'] = a.volumeDown
			a['SoftRight'] = a.skip
			break

		case mode.states.BROWSER:
			a['q'] = {
				down: browser.Queue
			}
			a[' '] = a['Enter'] = {
				hint: 'Queue',
				press() {
					browser.Cd() && browser.Queue()
				},
				holdHint: 'Queue All',
				hold: browser.QueueAllBelow
			}
			a['4'] = a['g'] = {
				up: browser.GoToDirectory
			}
			a['Backspace'] = a['Escape'] = {
				up: browser.Back
			}

			listActions(browser.list)
			break

		case mode.states.QUEUE:
			listActions(queue.list)

			a[' '] = a['Enter'] = {
				hint: 'Remove',
				press: queue.Remove,
				holdHint: 'Remove All',
				hold: queue.RemoveAllBelow
			}
			a['SoftLeft'] = a['['] = a['ArrowUp'].shift = {
				down() {
					queue.Move(-1)
				}
			}
			a['SoftRight'] = a[']'] = a['ArrowDown'].shift = {
				down() {
					queue.Move(1)
				}
			}
			a['4'] = a['g'] = {
				up() {
					browser.GoToDirectory(queue.Focused())
					mode.Set(mode.states.BROWSER)
				}
			}
			break
	}
}

function listActions(list) {
	let a = view.actions

	a['ArrowUp'] = {
		down() {
			list.Scroll(-1)
		}
	}
	a['ArrowDown'] = {
		down() {
			list.Scroll(1)
		}
	}
}

export function OnKeydown(event) {
	let a = view.actions[event.key]
	if(a == null) return

	ActionDown(a.shift && event.shiftKey ? a.shift : a)
		&& event.preventDefault()
}

export function ActionDown(action) {
	if(action.holdTimeout != null) {
		return true
	}

	if(action.down) {
		return action.down()
	}

	if(action.hold) {
		Hold(action)
	} else if(action.press) {
		return action.press()
	}
}

export function OnKeyup(event) {
	let a = view.actions[event.key]
	if(a == null) return

	ActionUp(a.shift && event.shiftKey ? a.shift : a)
		&& event.preventDefault()
}

export function ActionUp(action) { 
	if(action.holdTimeout != null) {
		clearTimeout(action.holdTimeout)
		action.holdTimeout = null
	}

	if(action.up) {
		return action.up()
	}

	if(action.heldCount > 0) {
		return action.press()
	}
}

export function Hold(aAction) {
	aAction.heldCount = holdIntervals
	createHoldTimeout(aAction)
}

export function createHoldTimeout(aAction) {
	aAction.holdTimeout = setTimeout(() => {
		aAction.heldCount--
		if(aAction.heldCount == 0) {
			aAction.hold()
		} else {
			createHoldTimeout(aAction)
		}
	}, holdIntervalLength)
}