shared/waqi-api-demo.js at master · shark526/shared · GitHub

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function init(tokenId, inputId, outputId) {
    token.id = tokenId;

    var input = $(inputId);
    var timer = null;
    var output = $(outputId);

    input.on("keyup", function () {
        /* Debounce */
        if (timer) clearTimeout(timer);
        timer = setTimeout(function () {
            search(input.val(), output);
        }, 250);
    });
}

function search(keyword, output) {
    var info = token() == "demo" ? "(based on demo token)" : "";
    output.html("<h2>Search results " + info + ":</h2>");
    output.append($("<div/>").html("Loading..."));
    output.append($("<div/>").addClass("cp-spinner cp-meter"));

    $.getJSON(
        "//api.waqi.info/search/?token=" + token() + "&keyword=" + keyword,
        function (result) {
            var info = token() == "demo" ? "(based on demo token)" : "";
            output.html("<h2>Search results " + info + ":</h2>");
            if (!result || result.status != "ok") {
                output.append("Sorry, something wrong happend: ");
                if (result.data) output.append($("<code>").html(result.data));
                return;
            }

            if (result.data.length == 0) {
                output.append("Sorry, there is no result for your query!");
                return;
            }

            var table = $("<table/>").addClass("result");
            output.append(table);

            output.append(
                $("<div/>").html("Click on any of the station to see the detailled AQI")
            );

            var stationInfo = $("<div/>");
            output.append(stationInfo);

            result.data.forEach(function (station, i) {
                var tr = $("<tr>");
                tr.append($("<td>").html(station.station.name));
                tr.append($("<td>").html(colorize(station.aqi)));
                tr.append($("<td>").html(station.time.stime));
                tr.on("click", function () {
                    showStation(station, stationInfo);
                    //method in waqi-map-demo.js
                    loadMapByGeo(station.station.geo);
                });
                table.append(tr);
                if (i == 0) showStation(station, stationInfo);
            });
        }
    );
}

function showStation(station, output) {
    output.html("<h2>Pollutants & Weather conditions:</h2>");
    output.append($("<div/>").html("Loading..."));
    output.append($("<div/>").addClass("cp-spinner cp-meter"));

    $.getJSON(
        "//api.waqi.info/feed/@" + station.uid + "/?token=" + token(),
        function (result) {
            output.html("<h2>Pollutants & Weather conditions:</h2>");
            if (!result || result.status != "ok") {
                output.append("Sorry, something wrong happend: ");
                if (result.data) output.append($("<code>").html(result.data));
                return;
            }

            var names = {
                pm25: "PM<sub>2.5</sub>",
                pm10: "PM<sub>10</sub>",
                o3: "Ozone",
                no2: "Nitrogen Dioxide",
                so2: "Sulphur Dioxide",
                co: "Carbon Monoxyde",
                t: "Temperature",
                w: "Wind",
                r: "Rain (precipitation)",
                h: "Relative Humidity",
                d: "Dew",
                p: "Atmostpheric Pressure",
            };

            output.append(
                $("<div>").html(
                    "Station: " + result.data.city.name + " on " + result.data.time.s
                )
            );

            var table = $("<table/>").addClass("result");
            output.append(table);

            for (var specie in result.data.iaqi) {
                var aqi = result.data.iaqi[specie].v;
                var tr = $("<tr>");
                tr.append($("<td>").html(names[specie] || specie));
                tr.append($("<td>").html(colorize(aqi, specie)));
                table.append(tr);
            }
        }
    );
}

function token() {
    // return $(token.id).val() || "demo";
    return token.id || "demo";
}

function colorize(aqi, specie) {
    specie = specie || "aqi";
    if (["pm25", "pm10", "no2", "so2", "co", "o3", "aqi"].indexOf(specie) < 0)
        return aqi;

    var spectrum = [
        { a: 0, b: "#cccccc", f: "#ffffff" },
        { a: 50, b: "#009966", f: "#ffffff" },
        { a: 100, b: "#ffde33", f: "#000000" },
        { a: 150, b: "#ff9933", f: "#000000" },
        { a: 200, b: "#cc0033", f: "#ffffff" },
        { a: 300, b: "#660099", f: "#ffffff" },
        { a: 500, b: "#7e0023", f: "#ffffff" },
    ];

    var i = 0;
    for (i = 0; i < spectrum.length - 2; i++) {
        if (aqi == "-" || aqi <= spectrum[i].a) break;
    }
    return $("<div/>")
        .html(aqi)
        .css("font-size", "120%")
        .css("min-width", "30px")
        .css("text-align", "center")
        .css("background-color", spectrum[i].b)
        .css("color", spectrum[i].f);
}