import { GoogleMap, Marker, InfoWindow, InfoBox, useJsApiLoader, LoadScript, GoogleMapProps, StandaloneSearchBox, Autocomplete } from '@react-google-maps/api';
import { observable, action, computed, Lambda, runInAction, IReactionDisposer } from "mobx";
import { observer } from "mobx-react";
import { Doc, DocListCast, Field, FieldResult, Opt } from "../../../../fields/Doc";
import { documentSchema } from "../../../../fields/documentSchemas";
import { Id } from "../../../../fields/FieldSymbols";
import { makeInterface } from "../../../../fields/Schema";
import { Cast, NumCast, ScriptCast, StrCast } from "../../../../fields/Types";
import { LinkManager } from "../../../util/LinkManager";
import { undoBatch, UndoManager } from "../../../util/UndoManager";
import "./CollectionMapView.scss";
import { CollectionSubView } from "../CollectionSubView";
import React = require("react");
import requestPromise = require("request-promise");
import ReactDOM from 'react-dom';
import { DragManager } from '../../../util/DragManager';
import { MapMarker } from '../../nodes/MapBox/MapMarker';


/**
 * Idea behind storing a marker:
 * 1. on the map api, have a button "add marker" that adds the marker on the map & store the marker as a node in the collection
 * (but don't render the marker in the collection itself)
 * 2. each marker, as a node, has the same feature as all other nodes for linking (the same way one could form a link between a node inside a child collection 
 * and a node outside the child collection)
 * 
 * /util/LinkManager.ts -- link relations
 * 
 */

type MapSchema = makeInterface<[typeof documentSchema]>;
const MapSchema = makeInterface(documentSchema);

export type Coordinates = {
    lat: number,
    lng: number,
}

export type LocationData = {
    id: string;
    pos: Coordinates;
};

const mapContainerStyle = {
    height: '100%',
};

const defaultCenter = {
    lat: 38.685,
    lng: -115.234,
};

const mapOptions = {
    fullscreenControl: false,
}

const drawingManager = new google.maps.drawing.DrawingManager({
    drawingControl: true,
    drawingControlOptions: {
        position: google.maps.ControlPosition.TOP_RIGHT,
        drawingModes: [
            google.maps.drawing.OverlayType.MARKER,
            // currently we are not supporting the following drawing mode on map, a thought for future development
            // google.maps.drawing.OverlayType.CIRCLE,
            // google.maps.drawing.OverlayType.POLYLINE,
        ],
    },
});

const options = {
    fields: ["formatted_address", "geometry", "name"], // note: level of details is charged by item per retrieval, not recommended to return all fields
    strictBounds: false,
    types: ["establishment"], // type pf places, subject of change according to user need
} as google.maps.places.AutocompleteOptions;

@observer
export default class CollectionMapView extends CollectionSubView<MapSchema, Partial<GoogleMapProps>>(MapSchema) {
    private _dropDisposer?: DragManager.DragDropDisposer;
    private _disposers: { [name: string]: IReactionDisposer } = {};


    @observable private _map = null as unknown as google.maps.Map;
    @observable private selectedPlace: LocationData | undefined;
    @observable private markerMap: { [id: string]: google.maps.Marker } = {};
    @observable private center = defaultCenter;
    @observable private zoom = 2.5;
    @observable private infoWindowOpen = false;
    @observable private bounds = new window.google.maps.LatLngBounds();
    @observable private inputRef = React.createRef<HTMLInputElement>();
    @observable private searchMarkers: google.maps.Marker[] = [];
    @observable private searchBox = new window.google.maps.places.Autocomplete(this.inputRef.current!, options);

    @observable private myPlaces: LocationData[] = [
        { id: "id1", pos: { lat: 39.09366509575983, lng: -94.58751660204751 } },
        { id: "id2", pos: { lat: 41.82399, lng: -71.41283 } },
        { id: "id3", pos: { lat: 47.606214, lng: -122.33207 } },
    ];

    @action
    private setSearchBox = (searchBox: any) => {
        this.searchBox = searchBox;
    }

    // iterate myPlaces to size, center, and zoom map to contain all markers
    private fitBounds = (map: google.maps.Map) => {
        console.log('map bound is:' + this.bounds);
        this.myPlaces ? this.myPlaces.map(place => {
            this.bounds.extend(place.pos!);
        }) : null;
        map.fitBounds(this.bounds);
    }

    // store a reference to google map instance; fit map bounds to contain all markers
    @action
    private loadHandler = (map: google.maps.Map) => {
        this._map = map;
        drawingManager.setMap(map);
        this.fitBounds(map);
    }

    @action
    private markerClickHandler = (e: MouseEvent, place: any) => {
        // set which place was clicked
        this.selectedPlace = place;

        console.log(this.selectedPlace);

        // used so clicking a second marker works
        if (this.infoWindowOpen) {
            this.infoWindowOpen = false;
            console.log("closeinfowindow")
        }
        this.infoWindowOpen = true;
        console.log("open infowindow")
    }

    @action
    private handleInfoWindowClose = () => {
        if (this.infoWindowOpen) {
            this.infoWindowOpen = false;
        }
        this.infoWindowOpen = false;
        this.selectedPlace = undefined;
    }

    @action
    private handlePlaceChanged = () => {
        console.log(this.searchBox);
        const place = this.searchBox.getPlace();

        if (!place.geometry || !place.geometry.location) {
            // user entered the name of a place that wasn't suggested & pressed the enter key, or place details request failed
            window.alert("No details available for input: '" + place.name + "'");
            return;
        }

        // zoom in on the location of the search result
        if (place.geometry.viewport) {
            console.log(this._map);
            this._map.fitBounds(place.geometry.viewport);
        } else {
            console.log(this._map);
            this._map.setCenter(place.geometry.location);
            this._map.setZoom(17);
        }

        // customize icon => customized icon for the nature of the location selected
        const icon = {
            url: place.icon as string,
            size: new google.maps.Size(71, 71),
            origin: new google.maps.Point(0, 0),
            anchor: new google.maps.Point(17, 34),
            scaledSize: new google.maps.Size(25, 25),
        };

        // put temporary cutomized marker on searched location
        this.searchMarkers.forEach((marker) => {
            marker.setMap(null);
        });
        this.searchMarkers = [];
        this.searchMarkers.push(
            new window.google.maps.Marker({
                map: this._map,
                icon,
                title: place.name,
                position: place.geometry.location,
            })
        )
    }


    @action
    private addMarker = (location: google.maps.LatLng | undefined, map: google.maps.Map) => {
        new window.google.maps.Marker({
            position: location,
            map: map
        });
    }

    @action
    private markerLoadHandler = (marker: google.maps.Marker, place: LocationData) => {
        place.id ? this.markerMap[place.id] = marker : null;
    }

    render() {
        const { Document, fieldKey, isContentActive: active } = this.props;

        return <div className="collectionMapView" ref={this.createDashEventsTarget}>

            <div className={"collectionMapView-contents"}
                style={{ pointerEvents: active() ? undefined : "none", overflow: 'hidden' }}
                onWheel={e => e.stopPropagation()}
                onPointerDown={e => (e.button === 0 && !e.ctrlKey) && e.stopPropagation()} >
                {/* <LoadScript
                    googleMapsApiKey={process.env.GOOGLE_MAPS!}
                    libraries={['places', 'drawing']}
                > */}
                <div className="map-wrapper">
                    <GoogleMap
                        mapContainerStyle={mapContainerStyle}
                        zoom={this.zoom}
                        center={this.center}
                        onLoad={map => this.loadHandler(map)}
                        options={mapOptions}
                    >
                        <Autocomplete
                            onLoad={this.setSearchBox}
                            onPlaceChanged={this.handlePlaceChanged}>
                            <input ref={this.inputRef} className="searchbox" type="text" placeholder="Search anywhere:" />
                        </Autocomplete>

                        {this.myPlaces ? this.myPlaces.map(place =>
                            <Marker
                                position={place.pos}
                                onLoad={marker => this.markerLoadHandler(marker, place)}
                                onClick={e => this.markerClickHandler(e, place)}
                                draggable={false}
                            />
                        ) : null}
                        {this.infoWindowOpen && this.selectedPlace && (
                            <InfoWindow
                                anchor={this.markerMap[this.selectedPlace.id!]}
                                onCloseClick={this.handleInfoWindowClose}
                            >
                                <div style={{ backgroundColor: 'white', opacity: 0.75, padding: 12 }}>
                                    <div style={{ fontSize: 16 }}>
                                        <div>
                                            <img src="http://placekitten.com/200/300" />
                                            <hr />
                                            <form>
                                                <label>Title: </label><br />
                                                <input type="text" id="fname" name="fname"></input><br />
                                                <label>Desription: </label><br />
                                                <textarea style={{ height: 150 }} id="lname" name="lname" placeholder="Notes, a short description of this location, a brief comment, etc."></textarea>
                                            </form>
                                            <hr />
                                            <div>
                                                <button>New link+</button>
                                            </div>
                                        </div>
                                    </div>
                                </div>
                            </InfoWindow>
                        )}
                    </GoogleMap>
                </div>
                {/* </LoadScript > */}
            </div >
        </div >;
    }

}