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/*-
 * ============LICENSE_START=======================================================
 *  Copyright (C) 2020 Nordix Foundation.
 * ================================================================================
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 * SPDX-License-Identifier: Apache-2.0
 * ============LICENSE_END=========================================================
 */

import $ from "jquery";
import { config } from "./MonitoringConfig";
import { createEngineTable } from "./MonitoringTable";
import { createChart, updateChart } from "./MonitoringChart";
import { papUtilsRemoveElement } from "./MonitoringUtils";

/*
 * Create the Engine Service Table
 */
function createEngineSummaryTable() {
    var tableId = config.engineSummary.tableId;
    var headers = config.engineSummary.headers;

    // Create a wrapper div for both the table and the charts
    var wrapper = document.createElement("div");
    wrapper.setAttribute("id", "engineSummary_wrapper");
    wrapper.setAttribute("class", "wrapper_borderless");
    $("." + config.engineSummary.parent).append(wrapper);

    var table = createEngineTable($(wrapper), tableId, headers.map(function(a) {
        return a.title;
    }));
    var tableRow = document.createElement("tr");
    var tableData = "";
    for ( var h in headers) {
        tableData += "<td id=" + tableId + "_" + headers[h].id + "></td>";
    }
    tableRow.innerHTML = tableData;

    $(table).children("#engineTableBody").append(tableRow);

}

function setEngineSummaryData(data, timeStamp, policyDeployCount, policyDeploySuccessCount, policyDeployFailCount, policyExecutedCount, policyExecutedSuccessCount, policyExecutedFailCount) {
    _setEngineSummaryData(timeStamp, getAvgPolicyDuration(data), policyDeployCount, policyDeploySuccessCount, policyDeployFailCount, policyExecutedCount, policyExecutedSuccessCount, policyExecutedFailCount, getUptimeOfOldestEngine(data));
}

/*
 * Check for any changes in the Engine Summary Table data and update only where
 * necessary
 */
function _setEngineSummaryData(timestamp, avgPolicyDuration, policyDeployCount, policyDeploySuccessCount, policyDeployFailCount, policyExecutedCount, policyExecutedSuccessCount, policyExecutedFailCount, upTime) {

    var tableId = config.engineSummary.tableId;
    var headers = config.engineSummary.headers.map(function(a) {
        return a.id;
    });
    var data = [ timestamp, policyDeployCount, policyDeploySuccessCount, policyDeployFailCount, policyExecutedCount, policyExecutedSuccessCount, policyExecutedFailCount ,upTime == -1? "N/A":upTime];

    var engineSummaryTable = $("#engineSummaryTable");

    for ( var h in headers) {
        var td = engineSummaryTable.find("#" + tableId + "_" + headers[h]);
        if (td.html() !== data[h]) {
            engineSummaryTable.find("#" + tableId + "_" + headers[h]).html(data[h]);
        }
    }

    // Update charts
    var wrapper = engineSummaryTable.parent();
    var chartConfig = config.engineSummary.chart.avgPolicyDurationChart;
    var avgPolicyDurationChart = wrapper.find("#" + chartConfig.parent)[0];
    if (avgPolicyDuration.length) {
        if (avgPolicyDurationChart) {
            updateChart(avgPolicyDurationChart, avgPolicyDuration, chartConfig.nodeColour);
        } else {
            var avgPolicyDurationDiv = document.createElement("div");
            avgPolicyDurationDiv.setAttribute("id", chartConfig.parent);
            avgPolicyDurationDiv.setAttribute("class", "papChart_inline");
            createChart(avgPolicyDuration, avgPolicyDurationDiv, chartConfig.title, chartConfig.unit,
                    chartConfig.lineStroke, chartConfig.nodeColour);
            $(wrapper).append(avgPolicyDurationDiv);
        }
    } else if (avgPolicyDurationChart){
        papUtilsRemoveElement(chartConfig.parent);
    }
}

function getUptimeOfOldestEngine(data) {
    var oldestUpTime = -1;
    for ( var d in data) {
        if (data[d].upTime > oldestUpTime) {
            oldestUpTime = data[d].upTime;
        }
    }
    return oldestUpTime;
}

function getSumOfPolicyExecutions(data) {
    var totalPolicyExecutions = 0;
    for ( var d in data) {
        totalPolicyExecutions += data[d].policyExecutions;
    }
    return totalPolicyExecutions;
}

function getAvgPolicyDuration(data) {
    var chartData = [];
    var avgPolicyDurations = [];
    for ( var d in data) {
        var avgPolicyDuration = JSON.parse(data[d].averagePolicyDuration);
        avgPolicyDurations.push(avgPolicyDuration);
    }

    if (avgPolicyDurations.length > 0) {
        chartData = avgPolicyDurations[0];
        for (var i = 1; i < avgPolicyDurations.length; i++) {
            var engineData = avgPolicyDurations[i];
            for ( var c in chartData) {
                chartData[c].value += engineData[c].value;
            }
        }
    }

    for ( var c2 in chartData) {
        chartData[c2].value = Math.round(chartData[c2].value / data.length);
    }

    return chartData;
}

export { createEngineSummaryTable, setEngineSummaryData, };