extends Control

const SERVER_STATUS_TEXT: Dictionary = {
	"RUNNING": "Server is running!",
	"NOT_RUNNING": "Server is not running."
}

const ACCEPTED_FILE_FORMATS := ["md"] # server should ignore these file types when adding endpoints

enum ContextMenuOptions {
	MOVE_UP,
	MOVE_DOWN,
}

onready var server_path_label := $"%ServerPathLabel"
onready var port_spin_box := $"%PortSpinBox"
onready var server_status_label := $"%ServerStatusLabel"

onready var document_title_lineedit := $"%DocTitleLineEdit"
onready var document_date_lineedit := $"%DocDateLineEdit"

onready var file_tree := $"%FileTree"
onready var file_tree_context_menu := $"%FileTreeContextMenu"

onready var document_input_textedit := $"%DocInputTextEdit"
onready var content_preview_richtextlabel := $"%ContentPreviewRichTextLabel"

onready var server_folder_dialog := $"%ServerFolderDialog"

signal server_folder_changed(new_path) # new_path: String
signal server_port_changed(new_port) # new_port: int
signal start_server_button_pressed(port) # port: int
signal open_browser_button_pressed(port) # port: int

signal files_selection_changed(new_files) # new_files: Array<String>

var server_dir: String setget set_server_dir
var is_server_running: bool = false setget set_server_running

var working_files: Array = [] # Array<FileDef>

var current_file: FileDef = null


func _ready() -> void:
	# TODO: put this in a config file
	if !OS.has_feature("editor"):
		self.server_dir = OS.get_executable_path().get_base_dir()
	else:
		self.server_dir = ProjectSettings.globalize_path("res://")


func set_server_dir(dir: String) -> void:
	server_dir = dir
	server_path_label.text = dir

	file_tree.clear()
	working_files.clear()

	var root: TreeItem = file_tree.create_item()
	root.set_text(0, "Server files")

	var directory := Directory.new()
	if directory.open(dir) == OK:
		directory.list_dir_begin()
		var file_name: String = directory.get_next()
		while file_name != "":
			if !directory.current_is_dir() && (file_name.get_extension() in ACCEPTED_FILE_FORMATS):
				var fd = FileDef(file_name, false)
				working_files.append(fd)

				var in_filestxt := _is_file_in_filestxt(file_name)

				var item: TreeItem = file_tree.create_item(root)
				item.set_cell_mode(0, TreeItem.CELL_MODE_CHECK)
				item.set_metadata(0, fd)
				item.set_editable(0, true)
				item.set_text(0, file_name)

				item.set_checked(0, in_filestxt)
				fd.include_in_filestxt = in_filestxt

			file_name = directory.get_next()

		directory.list_dir_end()


func _on_FileTree_item_edited() -> void:
	var item: TreeItem = file_tree.get_edited()
	var fd: FileDef = item.get_metadata(0)
	fd.include_in_filestxt = item.is_checked(0)


func _on_FileTree_item_selected() -> void:
	var item: TreeItem = file_tree.get_selected()
	current_file = item.get_metadata(0) as FileDef

	if !current_file.dirty:
		var file_metadata := _get_file_metadata(current_file.file_path)
		current_file.title = file_metadata["title"]
		current_file.date = file_metadata["date"]
		current_file.content = file_metadata["content"]

	document_input_textedit.text = current_file.content
	document_date_lineedit.text = current_file.date
	document_title_lineedit.text = current_file.title


func _on_FileTree_item_rmb_selected(position: Vector2) -> void:
#	var item: TreeItem = file_tree.get_selected()
	file_tree_context_menu.rect_position = position + file_tree.rect_global_position
	file_tree_context_menu.popup()


func _on_OpenServerFolderButton_pressed() -> void:
	server_folder_dialog.popup()


func set_server_running(running: bool) -> void:
	is_server_running = running # TODO: logic for disabling and enabling certain nodes


func _generate_filestxt() -> String:
	var files := ""

	for file in working_files:
		file = file as FileDef
		if file.include_in_filestxt:
			files += "%s %s %s\n" % [file.file_path, file.date, file.title]

	return files


func _is_file_in_filestxt(path: String) -> bool:
	var f := File.new()
	if f.open(server_dir.plus_file("files.txt"), File.READ) == OK:
		var text := f.get_as_text()
		return path in text
	else:
		return false


func _get_file_metadata(path: String) -> Dictionary:
	var f := File.new()

	var res = {}

	if f.open(server_dir.plus_file("files.txt"), File.READ) == OK:
		var text := f.get_as_text()
		var lines := text.split("\n")
		for line in lines:
			line = line as String
			if line.empty():
				res = {}
			var def = line.split(" ", true, 2)
			if def[0] == path:
				res["file_path"] = def[0]
				res["date"] = def[1] if def.size() > 1 else ""
				res["title"] = def[2] if def.size() > 2 else ""
				break

	if f.open(server_dir.plus_file(path), File.READ) == OK:
		res["content"] = f.get_as_text()

	return res


func _on_DocTitleLineEdit_text_changed(new_text: String) -> void:
	if current_file:
		current_file.title = new_text
		current_file.dirty = true


func _on_DocDateLineEdit_text_changed(new_text: String) -> void:
	if current_file:
		current_file.date = new_text
		current_file.dirty = true


func _on_DocInputTextEdit_text_changed() -> void:
	if current_file:
		var new_text: String = document_input_textedit.text
		current_file.content = new_text
		current_file.dirty = true


func FileDef(
	file_path: String,
	include_in_filestxt: bool,
	title: String = "",
	date: String = "") -> FileDef:
		var fd := FileDef.new()
		fd.file_path = file_path
		fd.include_in_filestxt = include_in_filestxt
		fd.title = title
		fd.date = date

		return fd


class FileDef:
	var file_path: String # relative
	var include_in_filestxt: bool = true
	var title: String # optional
	var date: String # optional, YYYY-MM-DD
	var dirty: bool = false

	var content: String