// uses functions in utils.js
var host = window.location.protocol + "//" + window.location.host;

// "global" map variables
var map;
var previewmap;

var visited_clues_m = L.layerGroup([]); // all clues
var unvisited_clues_m = L.layerGroup([]); // subset of all clues - unvisited clues
var destination_clues_m = L.layerGroup([]); // clues bikers are currently destined for
var bikes_m = L.layerGroup([]); // bike markers
var routes_m = L.layerGroup([]); // polyline routes

var homemarker, homebase, clues, clue_rels, bikes, routes, previewmarker;

var latest_timestamp = -1; // initially -1, otherwise set to value given by server in last successful info update

var baseIcon = L.Icon.extend({
    options: {
        iconSize:     [25, 41], // size of the icon
        iconAnchor:   [12, 41], // point of the icon which will correspond to marker's location
        popupAnchor:  [0, -41] // point from which the popup should open relative to the iconAnchor
    }
})
var homeIcon = new baseIcon({iconUrl: 'static/img/marker-home.png'}),
    activeBikeIcon = new baseIcon({iconUrl: 'static/img/marker-bike-active.png', className:"leaflet-bike-marker"}),
    inactiveBikeIcon = new baseIcon({iconUrl: 'static/img/marker-bike-inactive.png'}),
    visitedIcon = new baseIcon({iconUrl: 'static/img/marker-icon-grey.png'}),
    unvisitedIcon = new baseIcon({iconUrl: 'static/img/marker-icon-blue.png'}), // generic, becomes colored when assigned to route
    orangeIcon = new baseIcon({iconUrl: 'static/img/marker-icon-orange.png'}),
    redIcon = new baseIcon({iconUrl: 'static/img/marker-icon-red.png'}),
    greenIcon = new baseIcon({iconUrl: 'static/img/marker-icon-green.png'}),
    yellowIcon = new baseIcon({iconUrl: 'static/img/marker-icon-yellow.png'});
var bikeIcons = {'ACTIVE' : activeBikeIcon, 'INACTIVE' : inactiveBikeIcon}

function zoomToBike(team_name){
    map.panTo(bikes[team_name]['marker'].getLatLng());
}
function zoomToClue(clue_name){
    map.panTo(clue_rels[clue_name].getLatLng());
}
function previewZoom(){
    var long = parseFloat(document.getElementById("new_clue_longitude").value);
    var lat = parseFloat(document.getElementById("new_clue_latitude").value);
    console.log(long);
    console.log(document.getElementById("new_clue_longitude").value);
    if (!isNaN(long) && !isNaN(lat)){
        previewmarker.setLatLng([lat, long]);
        previewmap.panTo(previewmarker.getLatLng());
    }
}

function drawRoute(route_coords_osrm, team_color) {
    //osrm lat/long are swapped
    for (var i = 0; i < route_coords_osrm.length; i++){ 
        var t = route_coords_osrm[i][1];
        route_coords_osrm[i][1] = route_coords_osrm[i][0];
        route_coords_osrm[i][0] = t;
    }
    var route = new L.polyline(route_coords_osrm, {color: team_color});
    routes_m.addLayer(route);
}
function drawRoutes() {
    routes_m.clearLayers();
    for (var i = 0; i < routes['clusters'].length; i++){
        if(routes['clusters'][i].length > 0){
            var color;
            var r = Math.floor(Math.random() * 155+100);
            var g = 0; // no greens -- avoid yellow
            var b = Math.floor(Math.random() * 155+100);
            color= "rgb("+r+","+g+","+ b+")"; 
            console.log(color);
            drawRoute(routes['clusters'][i], color);
        }
    }
    for (var i = 0; i < routes['individual_routes'].length; i++){
        if(routes['individual_routes'][i].length > 0){
            drawRoute(routes['individual_routes'][i], 'yellow');
        }
    }
}

function updateBikeStatus(){
    var table = document.getElementById("bike-teams-table");
    table.innerHTML = '';
    for (const [key, value] of Object.entries(bikes)) {
        var name = key;
        var bike = value;
        var row = document.createElement("tr");
        var namecell = document.createElement("td"); namecell.innerHTML = "<a href=\"#\" onclick=\"zoomToBike('"+name+"')\">"+name+"</a>";
        var statuscell = document.createElement("td"); statuscell.innerHTML = "<span "+((bike['team_status'] == "ACTIVE")? "style=\"color:lightgreen\"" : "") +">" + bike['team_status'] + " ("+parseInt(bike['time_since_last_contact']).toString()+"s)</span>";
        var targetcell = document.createElement("td"); targetcell.innerHTML = "<a href=\"#\" onclick=\"zoomToClue('"+bike['target_clue']+"')\">"+bike['target_clue']+"</a>";
        var etacell = document.createElement("td"); etacell.innerHTML = "ETA: "+routes['cluster_times'][key];
        
        row.appendChild(namecell);
        row.appendChild(statuscell);
        row.appendChild(targetcell);
        row.appendChild(etacell);
        table.appendChild(row);
    }
}

function updateClueStats(){
    document.getElementById("total_count").innerText = clues.length;
    var visited_count = 0;
    var avg_distance = 0;
    for (var i =0; i < clues.length; i++){
        if(clues[i]['clue_status'] == "VISITED"){
            visited_count++;
            avg_distance += getDistanceFromLatLon(homebase, clues[i]);
        } 
    }
    avg_distance /= visited_count;
    document.getElementById("unvisited_count").innerText = clues.length-visited_count;
    document.getElementById("visited_count").innerText = visited_count;
    document.getElementById("percent_visited").innerText = (100*(visited_count/clues.length)).toFixed(2);
    document.getElementById("avg_visited_distance").innerText = avg_distance.toFixed(2);
}

function drawClues(){
    unvisited_clues_m.clearLayers();
    visited_clues_m.clearLayers(); 
    for (var i = 0; i < clues.length; i++) {
        var tempIcon = visitedIcon;
        if (clues[i]['clue_status'] == "UNVISITED") tempIcon = unvisitedIcon;
        var clueMarker = L.marker([clues[i]['latitude'], clues[i]['longitude']], {icon: tempIcon}).bindPopup(clues[i]['clue_name'] + ": " + clues[i]['clue_info']);
        clue_rels[clues[i]['clue_name']] = clueMarker; 
        if (clues[i]['clue_status'] == "UNVISITED") unvisited_clues_m.addLayer(clueMarker);
        else visited_clues_m.addLayer(clueMarker);
    }
}

function addClue(){
    var long = parseFloat(document.getElementById("new_clue_longitude").value);
    var lat = parseFloat(document.getElementById("new_clue_latitude").value);
    if (isNaN(long) || isNaN(lat)){
        alert("Invalid coordinates.");
        return;
    }
    if(confirm("Are you sure this is the right location?")){
        console.log("yes");
    }
}

// run every x seconds to get latest info from server
function requestLatestInfo(){
    function handleLatestInfo(json){
        if(json['status'] != "OK") return;
        latest_timestamp = json['timestamp'];
        // process home base
        if (json['home_changed']){
            homebase = json['homebase'];
            if(homemarker)homemarker.setLatLng([homebase['latitude'], homebase['longitude']]);
            else homemarker = L.marker([homebase['latitude'], homebase['longitude']], {icon: homeIcon}).addTo(map).bindPopup("Home is where the club is.");
        }
        // process routes
        if(json['routes_changed']){
            routes = json['routes'];
            console.log(routes);
            drawRoutes();
        }
        // process bikes
        if(true || json['bikes_changed']){ // always true since we need constant updates for bikes
            bikes_t = json['bikes'];

            for (var i = 0; i < bikes_t.length; i++){
                var name = bikes_t[i]['team_name'];
                if(name in bikes) {
                    bikes[name]['marker'].setLatLng([bikes_t[i]['latitude'],bikes_t[i]['longitude']]);
                    if(bikes_t[i]['team_status'] != [name]['team_status'])bikes[name]['marker'].setIcon(bikeIcons[bikes_t[i]['team_status']]);
                    for (const [key, value] of Object.entries(bikes_t[i])) {
                        bikes[name][key] = value;
                    }
                } else { // add bike
                    var bikeMarker = new L.marker([bikes_t[i]['latitude'],bikes_t[i]['longitude']]).bindPopup(bikes_t[i]['team_name']);
                    bikes[name] = bikes_t[i];
                    bikes[name]['marker'] = bikeMarker;
                    bikeMarker.setIcon(bikeIcons[bikes[name]['team_status']]);
                    bikes_m.addLayer(bikeMarker);
                }
            }
            // remove no longer existing bikes
            for (const [key, value] of Object.entries(bikes)) {
                var deleteBike = true;
                for(var i = 0; i < bikes_t.length; i++){
                    if(bikes_t[i]['team_name'] == key) {deleteBike = false; }
                } 
                if(deleteBike) {
                    console.log("deleting bike");
                    bikes_m.removeLayer(value['marker']);
                    delete bikes[key];
                }
            }
            updateBikeStatus();
        }
        // process clues 
        if(json['clues_changed']){
            clues = json['clues'];
            clue_rels = {}; 
            drawClues();
            updateClueStats();
        }

        document.getElementById("routeinfo").innerText = json['calculating_routes'] ? "ROUTE INFO | (Calculating...)" : "ROUTE INFO";
    }
    fetch(host+'/getLatestInfo', {
        method: "POST",
        headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
        },
        body: JSON.stringify({ "info_age" : latest_timestamp })})
    .then((response) => response.json())
    .then((json) => handleLatestInfo(json));
}
var intervalId = window.setInterval(function(){
    requestLatestInfo();
  }, 3000);

var clockINterval = window.setInterval(function(){
    var d = new Date();
    document.getElementById("titletime").innerText = d.toLocaleString();
}, 1000);

// RUN ON PAGE LOAD
window.onload = function() {
    clues = {}; bikes = {}; routes = {};

    map = L.map('map').setView([42.3626081,-71.0620591], 13);
    L.tileLayer('https://tiles.stadiamaps.com/tiles/alidade_smooth_dark/{z}/{x}/{y}{r}.{ext}?api_key=24746ff5-179d-482f-97a8-0267c5b276a1', {
        minZoom: 0,
        maxZoom: 20,
        attribution: '&copy; <a href="https://www.stadiamaps.com/" target="_blank">Stadia Maps</a> &copy; <a href="https://openmaptiles.org/" target="_blank">OpenMapTiles</a> &copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
        ext: 'png'
    }).addTo(map);
    previewmap = L.map('previewmap').setView([42.3626081,-71.0620591], 16);
    L.tileLayer('https://tiles.stadiamaps.com/tiles/alidade_smooth_dark/{z}/{x}/{y}{r}.{ext}?api_key=24746ff5-179d-482f-97a8-0267c5b276a1', {
        minZoom: 0,
        maxZoom: 20,
        ext: 'png'
    }).addTo(previewmap);

    //homemarker = L.marker([homebase['latitude'], homebase['longitude']], {icon: homeIcon}).addTo(map).bindPopup("Home is where the club is.");
    previewmarker = L.marker([0,0], {icon: greenIcon}).addTo(previewmap);
    map.addLayer(visited_clues_m);
    map.addLayer(unvisited_clues_m);
    map.addLayer(bikes_m);
    map.addLayer(routes_m);
    var layerControl = L.control.layers(null,null,{collapsed:false});
    layerControl.addOverlay(unvisited_clues_m, "Unvisited Clues");
    layerControl.addOverlay(visited_clues_m, "Visited Clues");
    layerControl.addOverlay(bikes_m, "Bikes");
    layerControl.addTo(map);
    requestLatestInfo();
}