// 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 p_routes_m = L.layerGroup([]); //

var homemarker, homebase, clues, clue_rels, bikes, routes, p_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-green.png'}),
    disabledIcon = new baseIcon({iconUrl: 'static/img/marker-icon-black.png'}),
    unvisitedIcon = new baseIcon({iconUrl: 'static/img/marker-icon-grey.png'}), // generic, becomes colored when assigned to route
    visitedIconReq = new baseIcon({iconUrl: 'static/img/marker-icon-green-req.png'}),
    disabledIconReq = new baseIcon({iconUrl: 'static/img/marker-icon-black-req.png'}),
    unvisitedIconReq = new baseIcon({iconUrl: 'static/img/marker-icon-grey-req.png'}); // generic, becomes colored when assigned to route
var teamIcons = [   unvisitedIcon,
                    new baseIcon({iconUrl: 'static/img/marker-icon-orange.png'}),
                    new baseIcon({iconUrl: 'static/img/marker-icon-red.png'}),
                    new baseIcon({iconUrl: 'static/img/marker-icon-blue.png'}),
                    new baseIcon({iconUrl: 'static/img/marker-icon-yellow.png'}) ];
var teamIconsReq = [    unvisitedIconReq,
                        new baseIcon({iconUrl: 'static/img/marker-icon-orange-req.png'}),
                        new baseIcon({iconUrl: 'static/img/marker-icon-red-req.png'}),
                        new baseIcon({iconUrl: 'static/img/marker-icon-blue-req.png'}),
                        new baseIcon({iconUrl: 'static/img/marker-icon-yellow-req.png'}) ];

    team1IconReq = new baseIcon({iconUrl: 'static/img/marker-icon-orange.png'}),
    team2IconReq = new baseIcon({iconUrl: 'static/img/marker-icon-red.png'}),
    team3IconReq = new baseIcon({iconUrl: 'static/img/marker-icon-green.png'}),
    team4Icon = new baseIcon({iconUrl: 'static/img/marker-icon-yellow.png'});
var bikeIcons = {'ACTIVE' : activeBikeIcon, 'INACTIVE' : inactiveBikeIcon, 'DISABLED' : inactiveBikeIcon}
var bikeStatusOpacities = {"ACTIVE" : 1.0, "INACTIVE" : 0.75, "DISABLED" : 0.0};

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);
    if (!isNaN(long) && !isNaN(lat)){
        previewmarker.setLatLng([lat, long]);
        previewmap.panTo(previewmarker.getLatLng());
    }
}

function filterClues(text){
    for(var i = 0; i < clues.length; i++){
        var clue = clues[i]['clue_name'];
        if((text == "") || (clue.includes(text))){
            clue_rels[clue].setOpacity(1.0);
        } else {
            clue_rels[clue].setOpacity(0.25);
        }
    }
}

function drawRoute(route_coords_osrm, team_color, layer) {
    //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});
    layer.addLayer(route);
}

function drawRoutes() {
    routes_m.clearLayers();
    p_routes_m.clearLayers();
    for (var i = 0; i < p_routes['clusters'].length; i++){
        if(p_routes['clusters'][i].length > 0){
            var color;
            var shade = i*35+100;
            var r = shade;
            var g = shade; // grey previews
            var b = shade;
            color= "rgb("+r+","+g+","+ b+")"; 
            console.log(color);
            drawRoute(p_routes['clusters'][i], color, p_routes_m);
        }
    }
    for (var i = 0; i < p_routes['individual_routes'].length; i++){
        if(p_routes['individual_routes'][i].length > 0){
            drawRoute(p_routes['individual_routes'][i], 'white', p_routes_m);
        }
    }
    for (var i = 0; i < routes['clusters'].length; i++){
        if(routes['clusters'][i].length > 0){
            var color;
            var shade = i*50+100;
            var r = shade;
            var g = 0; // no greens -- avoid yellow
            var b = shade-50;
            color= "rgb("+r+","+g+","+ b+")"; 
            console.log(color);
            drawRoute(routes['clusters'][i], color, routes_m);
        }
    }
    for (var i = 0; i < routes['individual_routes'].length; i++){
        if(routes['individual_routes'][i].length > 0){
            drawRoute(routes['individual_routes'][i], 'yellow', routes_m);
        }
    }
}

function updateBikeStatus(){
    var table = document.getElementById("bike-teams-table");
    table.innerHTML = '';
    var index = 1;
    for (const [key, value] of Object.entries(bikes)) {
        var name = key;
        var bike = value;
        var row = document.createElement("tr");
        if(bike['team_status'] == "DISABLED")row.classList.add("disabled-class");
        var namecell = document.createElement("td"); namecell.innerHTML = "<a href=\"#\" onclick=\"zoomToBike('"+name+"')\">"+name+"</a>";
        var statuscell = document.createElement("td"); statuscell.innerHTML = "<a href='#' onclick=\"toggleBikeEnable('"+index.toString()+"')\" "+((bike['team_status'] == "ACTIVE")? "style=\"color:lightgreen\"" : "") +">" + bike['team_status'] + " ("+parseInt(bike['time_since_last_contact']).toString()+"s)</a>";
        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 = "<input type='datetime-local' id='deadline_"+index+"' value='"+bike['team_deadline']+"' onchange='onDeadlineChange(this)'"+(bike['team_status'] == "DISABLED" ? 'disabled' : "")+"> ";
        
        row.appendChild(namecell);
        row.appendChild(statuscell);
        row.appendChild(targetcell);
        row.appendChild(etacell);
        table.appendChild(row);
        index += 1;
    }
}

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 = teamIcons[clues[i]['assigned_team']];
        if(clues[i]['clue_required']){
            tempIcon = teamIconsReq[clues[i]['assigned_team']];
            if (clues[i]['clue_status'] == "UNVISITED") tempIcon = unvisitedIconReq;
            if (clues[i]['clue_status'] == "VISITED") tempIcon = visitedIconReq;
        }
        else{
            if (clues[i]['clue_status'] == "UNVISITED") tempIcon = unvisitedIcon;
            if (clues[i]['clue_status'] == "VISITED") tempIcon = visitedIcon;
        }

        var popupdiv = document.createElement('p');
        var toggleVisitText = clues[i]['clue_status'] == "UNVISITED" ? "Visit" : "Unvisit";
        var toggleDisableText = clues[i]['clue_status'] != "DISABLED" ? "Disable" : "Enable";
        popupdiv.innerHTML = "<span style='color:black'>" + clues[i]['clue_name'] + ": </span><span style='color:grey'>" + clues[i]['clue_info'] + "</span><br/>";
        popupdiv.innerHTML += "<button id=\"visitbutton_"+clues[i]['clue_name']+"\" style='margin-left:2px' onclick=\"toggle_visit_clue('"+clues[i]['clue_name']+"')\""+(clues[i]['clue_status'] == "DISABLED" ? "disabled" : "")+">"+toggleVisitText+"</button>";
        popupdiv.innerHTML += "<button id=\"enablebutton_"+clues[i]['clue_name']+"\" style='margin-left:2px' onclick=\"toggle_enable_clue('"+clues[i]['clue_name']+"')\""+(clues[i]['clue_status'] == "VISITED" ? "disabled" : "")+">"+toggleDisableText+"</button>";
        popupdiv.innerHTML += "<button id=\"requirebutton_"+clues[i]['clue_name']+"\" style='margin-left:2px' onclick=\"toggle_required_clue('"+clues[i]['clue_name']+"')\">"+(clues[i]['clue_required'] ? "Un-require" : "Require")+"</button></br>";
        popupdiv.innerHTML += "<div style='color:grey'>Assigned team: <select style='color:grey' id='assignedteam_"+clues[i]['clue_name']+"' onchange=\"assignedTeamChanged('"+clues[i]['clue_name']+"', this.value);\"><option value='0'>None</option> <option value='1'>Team 1</option> <option value='2'>Team 2</option> <option value='3'>Team 3</option></select></span>";
        var clueMarker = L.marker([clues[i]['latitude'], clues[i]['longitude']], {icon: tempIcon}).bindPopup(popupdiv);
        clue_rels[clues[i]['clue_name']] = clueMarker; 
        if (clues[i]['clue_status'] == "UNVISITED") unvisited_clues_m.addLayer(clueMarker);
        else visited_clues_m.addLayer(clueMarker);
        popupdiv.querySelector("#assignedteam_"+clues[i]['clue_name']).selectedIndex = clues[i]['assigned_team'];
    }
}

function assignedTeamChanged(clue_name, team){
    fetch(host+'/setClueTeam', {
        method: "POST",
        headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
        },
        body: JSON.stringify({ "clue_name" : clue_name, "bike_team": parseInt(team)})}) // unvisit (if appropriate)
    .then((response) => response.json())
    .then((json) => console.log(json));
}

function toggle_visit_clue(clue_name){
    if(!confirm("Are you sure you want to visit/unvisit this clue?")) return;
    console.log("toggling visited status for "+clue_name);
    var clue = get_clue_by_name(clue_name);
    document.getElementById("visitbutton_"+clue['clue_name']).disabled = true; // temporarily disable buttons until new server frame received
    document.getElementById("enablebutton_"+clue['clue_name']).disabled = true;
    document.getElementById("requirebutton_"+clue['clue_name']).disabled = true;
    fetch(host+'/visitClueGeneric', {
        method: "POST",
        headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
        },
        body: JSON.stringify({ "clue_name" : clue_name, "unvisit": true})}) // unvisit (if appropriate)
    .then((response) => response.json())
    .then((json) => console.log(json));
}

function toggle_required_clue(clue_name){
    if(!confirm("Are you sure you want to mark/unmark this clue?")) return;
    console.log("toggling visited status for "+clue_name);
    var clue = get_clue_by_name(clue_name);
    document.getElementById("visitbutton_"+clue['clue_name']).disabled = true; // temporarily disable buttons until new server frame received
    document.getElementById("enablebutton_"+clue['clue_name']).disabled = true;
    document.getElementById("requirebutton_"+clue['clue_name']).disabled = true;
    fetch(host+'/requireClue', {
        method: "POST",
        headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
        },
        body: JSON.stringify({ "clue_name" : clue_name, "unvisit": true})}) // unvisit (if appropriate)
    .then((response) => response.json())
    .then((json) => console.log(json));
}

function get_clue_by_name(clue_name){
    for (var i = 0; i < clues.length; i++) 
        if(clues[i]['clue_name'] == clue_name)
            return clues[i];
    return NaN;
}

function toggle_enable_clue(clue_name){
    if(!confirm("Are you sure you want to enable/disable this clue?")) return;
    console.log("toggling enabled status for "+clue_name);
    var clue = get_clue_by_name(clue_name);
    document.getElementById("visitbutton_"+clue['clue_name']).disabled = true; // temporarily disable buttons until new server frame received
    document.getElementById("enablebutton_"+clue['clue_name']).disabled = true;
    document.getElementById("requirebutton_"+clue['clue_name']).disabled = true;
    fetch(host+'/enableClue', {
        method: "POST",
        headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
        },
        body: JSON.stringify({ "clue_name" : clue_name })})
    .then((response) => response.json())
    .then((json) => console.log(json));    
}

function toggleBikeEnable(team_index){
    var bike = bikes["Team "+team_index];
    team_index = parseInt(team_index);
    var page = "/disableTeam";
    if(bike['team_status'] == "DISABLED"){
        page = "/enableTeam";
    }
    if(page == "/disableTeam") {
        if(!confirm("Are you sure you want to disable this team?"))return;
    }
    fetch(host+page, {
        method: "POST",
        headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
        },
        body: JSON.stringify({ "team_index" : team_index })}).then((response) => requestLatestInfo());
}

function addClue(){
    var clue_name = document.getElementById("new_clue_name").value;
    var clue_info = document.getElementById("new_clue_info").value;
    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("adding clue...");
        fetch(host+'/addClue', {
            method: "POST",
            headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json'
            },
            body: JSON.stringify({ "clue_name" : clue_name, "clue_info" : clue_info, "latitude" : lat, "longitude" : long})})
            .then((response) => response.json())
            .then((json) => {
                console.log(json);
                if(json['status'] != "OK")
                    alert(json['status']);
                else
                    alert("Clue added successfully.");
            });  
    }
}

// run every x seconds to get latest info from server
function requestLatestInfo(){
    console.log("requesting update");
    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'];
            p_routes = json['preview_routes'];
            drawRoutes();
        }
        // process bikes
        if(true || json['bikes_changed']){ // always true since we need constant updates for bikes
            var 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']]);
                    bikes[name]['marker'].setIcon(bikeIcons[bikes_t[i]['team_status']]);
                    bikes[name]['marker'].setOpacity(bikeStatusOpacities[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']]);
                    bikeMarker.setOpacity(bikeStatusOpacities[bikes_t[i]['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").innerHTML = json['calculating_routes'] ? "ROUTE INFO | <span style='color:orange'>(Calculating... <a href='#' onclick='stopRouting()'>(Force Stop)</a>)</span>" : "ROUTE INFO";
        if(json['routes_to_commit'])document.getElementById("routeinfo").innerHTML += "| <a href='#' onclick='commitRoutes()'>Commit preview routes</a>"
    }
    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));
}

function stopRouting(){
    var formData = new FormData();
    formData.append("command", "stopGenerating");
    fetch(host+'/controls', {
        method: "POST",
        body: formData
    }).then( res => requestLatestInfo());
}

function commitRoutes(){
    var formData = new FormData();
    formData.append("command", "commitRoutes");
    fetch(host+'/controls', {
        method: "POST",
        body: formData
    }).then( res => requestLatestInfo());
}

function onDeadlineChange(element){
    var team_index = parseInt(element.id.split("_")[1]);
    var new_deadline = element.value;

    fetch(host+'/updateTeamDeadline', {
        method: "POST",
        headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json'
        },
        body: JSON.stringify({ "team_index" : team_index, "new_deadline" : new_deadline})})
        .then((response) => response.json())
        .then((json) => {
            console.log(json);
            if(json['status'] != "OK")
                alert(json['status']);
        });  

}

var intervalId = window.setInterval(function(){
    requestLatestInfo();
  }, 5000);

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: visitedIcon}).addTo(previewmap);
    map.addLayer(visited_clues_m);
    map.addLayer(unvisited_clues_m);
    map.addLayer(bikes_m);
    map.addLayer(routes_m);
    map.addLayer(p_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.addOverlay(routes_m, "Routes");
    layerControl.addOverlay(p_routes_m, "Route Previews");
    layerControl.addTo(map);
    requestLatestInfo();
}