from lib.snabbdom import h, patch
from message import *
import random
from view.utils import *
from model import Translation, Sense, Example
from browser import document

from export import export_to_xml


class View:
    def __init__(self, container):
        self.vdom = h('div', {}, "Loading...")
        self.entry_vdom = None
        self.model = None
        patch(container, self.vdom)
        
        # this does not work on parent div, so attaching to document here
        document.addEventListener("keydown", msg(KeyboardPress))
    
    def view(self, model, data_change):
        self.model = model
        
        if data_change or self.entry_vdom is None:
            self.model.pre_view()
            self.entry_vdom = self.model.entry.view(self.model)
          
        new_vdom = self._view()
        patch(self.vdom, new_vdom)
        self.vdom = new_vdom
    
    def _view(self):
        return h("div", {"on": { "click": msg(Reset) }}, [
            self.entry_vdom,
            # h("button.blk", {"on": { "click": lambda _: check_export(self.model) } }, "CHK"),
            View.view_menu(self.model.menu_location, self.model.menu_target, self.model.entry),
            View.view_modal(self.model.modal_shown, self.model.modal)])
    
    @staticmethod
    def view_toggle_buttons(model):
        txt_examples = "Hide examples" if model.examples_shown else "Show examples"
        txt_clusters = "Hide clusters" if model.clusters_shown else "Show clusters"
        
        return [h("span.button.toggle", {"on": {"click": msg(ToggleExamples)}}, txt_examples),
                h("span.button.toggle", {"on": {"click": msg(ToggleClusters)}}, txt_clusters)]
        
    @staticmethod
    def view_translations(translations, parent, model):
        result = []
        for cluster in translations:
            result.append(h("div.translation-div-cluster", {}, [t.view(model) for t in cluster]))
        
        result.append(h("button.add-button", {"on": {"click": msg(ShowAddTranslation, parent)}}, "+"))
        return result
    
    @staticmethod
    def view_menu(location, menu_target, entry): 
        style = {
            "left": "{}px".format(location[0]),
            "top": "{}px".format(location[1])
        }
        
        if menu_target is None:
            style["opacity"] = "0"
            style["visibility"] = "hidden"
        
        elif type(menu_target) is Translation:
            translation = menu_target
            return h("span.popup-menu", { "style": style }, [
                h("button.shyButton", { "on": {"click": msg(ShowEditTranslation, translation)}}, "✎"),
                h("button.shyButton", { "on": {"click": msg(MoveRight, translation)}}, "→"),
                h("button.shyButton", { "on": {"click": msg(MoveLeft, translation)}}, "←"),
                h("button.shyButton", { "on": {"click": msg(BinTranslation, translation)}}, "🗑")])
        
        elif type(menu_target) is Sense:
            sense = menu_target
            return h("span.popup-menu", { "style": style }, [
                h("button.shyButton", { "on": {"click": msg(SenseMoveUp, sense)}}, "↑"),
                h("button.shyButton", { "on": {"click": msg(SenseMoveDown, sense)}}, "↓"),
                h("button.shyButton", { "on": {"click": msg(SenseBin, sense)}}, "🗑")])
        
        elif type(menu_target) is Example:
            example = menu_target
            sense = example_sense(example, entry)
            return h("span.popup-menu", { "style": style }, [
                h("button.shyButton", { "on": {"click": msg(ShowExampleEdit, example, sense)}}, "✎"),
                h("button.shyButton", { "on": {"click": msg(ExampleMoveUp, example)}}, "↑"),
                h("button.shyButton", { "on": {"click": msg(ExampleMoveDown, example)}}, "↓"),
                h("button.shyButton", { "on": {"click": msg(ExampleBin, example)}}, "🗑")])
        else:
            console.log("Should not be heree!!")
        
    @staticmethod
    def view_modal(modal_shown, modal):
        return h("div.modal", {}, [
            h("input", { "props": {"type": "checkbox", "checked": modal_shown} }, ""), 
            h("label.overlay", {}, ""), 
            h("article", {"on": { "click": msg(NoAction) }}, modal())])