sentilo/sentilo

var sensor = null;
var sensorType = null;
var dataType = null;
var sensorUnit = null;
var lastObsUrl = null;
var chartNav = [];

window.messages = {
    boolValues: {
        falseValue: 'no',
        trueValue: 'yes'
    },
    chart: {
        iniDate: 'Initial date:',
        endDate: 'End date:'
    }    
};

var initSensorDataVariables = function(type, dType, unit, url) {
    sensorType = type;
    dataType = dType;
    sensorUnit = unit;    
    lastObsUrl = url;
}

var retrieveChartPanel = function() {
    
    var url = createChartUrl(lastObsUrl);
    var placeholder = "#plot";
    var valuePlaceholder = '#sensorLastObsValue';
    var label = '';
    
    if (dataType === 'LINK' || 
        dataType === 'AUDIO_LINK' || 
        dataType === 'IMAGE_LINK' || 
        dataType === 'VIDEO_LINK' || 
        dataType === 'FILE_LINK') {
        makeLinkChart(placeholder, url, dataType, refreshChartControlLabels);
    } else if (dataType === 'TEXT' || dataType === 'JSON') {
        makeTextChart(placeholder, valuePlaceholder, url, dataType, refreshChartControlLabels);
    } else if (dataType === 'NUMBER') {
        showNumericDataChart(url, placeholder, sensorType, sensorUnit);
    } else if (dataType === 'BOOLEAN') {
        showBooleanDataChart(url, placeholder)
    } 
    
}

function showNumericDataChart(url, dataPanel, sensorType, unit, filters) {
    jsonGET(url, filters, function(data) {
        var chartAnchor = $('<div id="num-chart" class="ct-chart ct-perfect-fourth ct-chart-centered-labels"></div>');
        $(dataPanel).html(chartAnchor);
        printNumericalChart(data, sensorType, unit, '#num-chart', {height: 240, bottomPadding: 40});
        
        var fromTimestamp = (data.fromTimestamp===null) ? '' : data.fromTimestamp;
        var toTimestamp = (data.toTimestamp===null) ? '' : data.toTimestamp;
        
        var iniDateMessage = window.messages.chart.iniDate;
        var endDateMessage = window.messages.chart.endDate;
        
        var chartControls = 
            '<div class="chart-controls row-fluid">' +
            '    <div class="chart-controls span3">' +
            '        <div class="btn-group">' +
            '              <button id="chart-control-prev-btn" class="btn"><i class="icon-chevron-left"></i></button>' +
            '              <button id="chart-control-refresh-btn" class="btn"><i class="icon-refresh"></i></button>' +
            '              <button id="chart-control-next-btn" class="btn"><i class="icon-chevron-right"></i></button>' +
            '        </div>' +
            '    </div>' +
            '    <div class="chart-start-date span3"><span class="chart-controls-label">'+ iniDateMessage +'&nbsp;</span><span class="chart-controls-value">' + fromTimestamp + '</span></div>' +
            '    <div class="chart-end-date span6"><span class="chart-controls-label">'+ endDateMessage +'&nbsp;</span><span class="chart-controls-value">' + toTimestamp + '</span></div>' +
            '</div>';
        
        $(dataPanel).append($(chartControls));
        
        $("#chart-control-prev-btn").unbind('click');
        $("#chart-control-prev-btn").on('click', function(e) {
            filters = {
                to: data.fromTime
            };
            var navActual = {
                fromTimestamp: data.fromTimestamp, 
                toTimestamp: data.toTimestamp, 
                fromTime: data.fromTime, 
                toTime: data.toTime
            };
            chartNav.push(navActual);
            showNumericDataChart(url, dataPanel, sensorType, unit, filters);
        });
        
        $("#chart-control-refresh-btn").unbind('click');
        $("#chart-control-refresh-btn").on('click', function(e) {
            chartNav = [];
            filters = {};                            
            showNumericDataChart(url, dataPanel, sensorType, unit, filters);
        });
        
        $("#chart-control-next-btn").unbind('click');
        $("#chart-control-next-btn").on('click', function(e) {
            var prevNav = chartNav.pop();
            if (!prevNav) {
                chartNav = [];
                filters = {};                    
            } else {
                filters = {
                    to: prevNav.toTime + 1000
                };    
            }
            showNumericDataChart(url, dataPanel, sensorType, unit, filters);
        });
        
    });
    
}

function showBooleanDataChart(url, dataPanel, filters) {
    jsonGET(url, filters, function(data) {
        var chartAnchor = $('<div id="bool-chart" class="ct-chart ct-perfect-fourth ct-chart-centered-labels"></div>');
        $(dataPanel).html(chartAnchor);
        printBooleanChart(data, '#bool-chart', {height: 220, bottomPadding: 20});
        
        var fromTimestamp = (data.fromTimestamp===null) ? '' : data.fromTimestamp;
        var toTimestamp = (data.toTimestamp===null) ? '' : data.toTimestamp;
        
        var iniDateMessage = window.messages.chart.iniDate;
        var endDateMessage = window.messages.chart.endDate;
        
        var chartControls = 
            '<div class="chart-controls row-fluid">' +
            '    <div class="chart-controls span3">' +
            '        <div class="btn-group">' +
            '              <button id="chart-control-prev-btn" class="btn"><i class="icon-chevron-left"></i></button>' +
            '              <button id="chart-control-refresh-btn" class="btn"><i class="icon-refresh"></i></button>' +
            '              <button id="chart-control-next-btn" class="btn"><i class="icon-chevron-right"></i></button>' +
            '        </div>' +
            '    </div>' +
            '    <div class="chart-start-date span3"><span class="chart-controls-label">' + iniDateMessage + '&nbsp;</span><span class="chart-controls-value">' + fromTimestamp + '</span></div>' +
            '    <div class="chart-end-date span6"><span class="chart-controls-label">'+ endDateMessage +'&nbsp;</span><span class="chart-controls-value">' + toTimestamp + '</span></div>' +
            '</div>';
        
        $(dataPanel).append($(chartControls));
        
        $("#chart-control-prev-btn").unbind('click');
        $("#chart-control-prev-btn").on('click', function(e) {
            filters = {
                to: data.fromTime
            };
            var navActual = {
                fromTimestamp: data.fromTimestamp, 
                toTimestamp: data.toTimestamp, 
                fromTime: data.fromTime, 
                toTime: data.toTime
            };
            chartNav.push(navActual);
            showBooleanDataChart(url, dataPanel, filters);
        });
        
        $("#chart-control-refresh-btn").unbind('click');
        $("#chart-control-refresh-btn").on('click', function(e) {
            chartNav = [];
            filters = {};            
            showBooleanDataChart(url, dataPanel, filters);
        });
        
        $("#chart-control-next-btn").unbind('click');
        $("#chart-control-next-btn").on('click', function(e) {
            var prevNav = chartNav.pop();
            if (!prevNav) {
                chartNav = [];
                filters = {};                    
            } else {
                filters = {
                    to: prevNav.toTime + 1000
                };    
            }
            showBooleanDataChart(url, dataPanel, filters);
        });
        
    });
    
}

function printLastSensorObservationValue(sensorId, dataType, value, formattedValue, timestamp) {
    
    var panel = $('#sensorLastObsValue');
    
    if (dataType === 'AUDIO_LINK') {
        showAndLoadAudioPlayer(panel, value, formattedValue, sensor, sensorType, timestamp);
    } else if (dataType === 'VIDEO_LINK') {
        showAndLoadVideoPlayer(panel, value, formattedValue, sensor, sensorType, timestamp);
    } else if (dataType === 'IMAGE_LINK') {
        showImage(panel, value, formattedValue, sensor, sensorType, timestamp);
    } else if (dataType === 'FILE_LINK') {
        var filename = value.substring(value.lastIndexOf('/')+1);
        showFile(panel, value, formattedValue, filename, sensor, sensorType, timestamp);
    } else if (dataType === 'LINK') {
        showLink(panel, value, sensor, sensorType, timestamp);
    } else if (dataType === 'JSON') {
        showJson(panel, value, timestamp);
    } else if (dataType === 'BOOLEAN') {
        var boolValue = eval(value) ? window.messages.boolValues.trueValue.toUpperCase() : window.messages.boolValues.falseValue.toUpperCase(); 
        $("#sensorLastObsValue").html(boolValue);
    } else {
        $("#sensorLastObsValue").html(value);
    }
    
}

var refreshChartControlLabels = function(theNavData) {
    
    // This is a chart callback function
    // When data is loaded onto chart, calls this function
    // for update window labels
    // There's an important issue with delays after chart is updated :-(
    
    if (theNavData) {
        // Update the control labels
        $("#chartToDate").text((theNavData.startDate !== 'undefined' && theNavData.startDate !== null) ? theNavData.startDate : '');
        $("#chartFromDate").text((theNavData.endDate !== 'undefined' && theNavData.endDate !== null) ? theNavData.endDate : '');
        $("#numObservations").text(theNavData.numItems);
    }
}