# -*- coding: utf-8 -*-
# $Id: wuihlpgraphgooglechart.py $

"""
Test Manager Web-UI - Graph Helpers - Implemented using Google Charts.
"""

__copyright__ = \
"""
Copyright (C) 2012-2023 Oracle and/or its affiliates.

This file is part of VirtualBox base platform packages, as
available from https://www.virtualbox.org.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation, in version 3 of the
License.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, see <https://www.gnu.org/licenses>.

The contents of this file may alternatively be used under the terms
of the Common Development and Distribution License Version 1.0
(CDDL), a copy of it is provided in the "COPYING.CDDL" file included
in the VirtualBox distribution, in which case the provisions of the
CDDL are applicable instead of those of the GPL.

You may elect to license modified versions of this file under the
terms and conditions of either the GPL or the CDDL or both.

SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
"""
__version__ = "$Revision: 155244 $"

# Validation Kit imports.
from common                             import utils, webutils;
from testmanager.webui.wuihlpgraphbase  import WuiHlpGraphBase;


#*******************************************************************************
#*  Global Variables                                                           *
#*******************************************************************************
g_cGraphs = 0;

class WuiHlpGraphGoogleChartsBase(WuiHlpGraphBase):
    """ Base class for the Google Charts graphs. """
    pass;                               # pylint: disable=unnecessary-pass


class WuiHlpBarGraph(WuiHlpGraphGoogleChartsBase):
    """
    Bar graph.
    """

    def __init__(self, sId, oData, oDisp = None):
        WuiHlpGraphGoogleChartsBase.__init__(self, sId, oData, oDisp);
        self.fpMax = None;
        self.fpMin = 0.0;
        self.fYInverted = False;

    def setRangeMax(self, fpMax):
        """ Sets the max range."""
        self.fpMax = float(fpMax);
        return None;

    def invertYDirection(self):
        """ Inverts the direction of the Y-axis direction. """
        self.fYInverted = True;
        return None;

    def renderGraph(self):
        aoTable = self._oData.aoTable # type: WuiHlpGraphDataTable

        # Seems material (google.charts.Bar) cannot change the direction on the Y-axis,
        # so we cannot get bars growing downwards from the top like we want for the
        # reports.  The classic charts OTOH cannot put X-axis labels on the top, but
        # we just drop them all together instead, saving a little space.
        fUseMaterial = False;

        # Unique on load function.
        global g_cGraphs;
        iGraph = g_cGraphs;
        g_cGraphs += 1;

        sHtml  = '<div id="%s">\n' % ( self._sId, );
        sHtml += '<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>\n' \
                 '<script type="text/javascript">\n' \
                 'google.charts.load("current", { packages: ["corechart", "bar"] });\n' \
                 'google.setOnLoadCallback(tmDrawBarGraph%u);\n' \
                 'function tmDrawBarGraph%u()\n' \
                 '{\n' \
                 '    var oGraph;\n' \
                 '    var dGraphOptions = \n' \
                 '    {\n' \
                 '         "title":     "%s",\n' \
                 '         "hAxis": {\n' \
                 '             "title": "%s",\n' \
                 '         },\n' \
                 '         "vAxis": {\n' \
                 '             "direction": %s,\n' \
                 '         },\n' \
                % ( iGraph,
                    iGraph,
                    webutils.escapeAttrJavaScriptStringDQ(self._sTitle) if self._sTitle is not None else '',
                    webutils.escapeAttrJavaScriptStringDQ(aoTable[0].sName) if aoTable and aoTable[0].sName else '',
                    '-1' if self.fYInverted else '1',
                  );
        if fUseMaterial and self.fYInverted:
            sHtml +=  '        "axes": { "x": { 0: { "side": "top" } }, "y": { "0": { "direction": -1, }, }, },\n';
        sHtml += '    };\n';

        # The data.
        if self._oData.fHasStringValues and len(aoTable) > 1:
            sHtml += '    var oData = new google.visualization.DataTable();\n';
            # Column definitions.
            sHtml += '    oData.addColumn("string", "%s");\n' \
                   % (webutils.escapeAttrJavaScriptStringDQ(aoTable[0].sName) if aoTable[0].sName else '',);
            for iValue, oValue in enumerate(aoTable[0].aoValues):
                oSampleValue = aoTable[1].aoValues[iValue];
                if utils.isString(oSampleValue):
                    sHtml += '    oData.addColumn("string", "%s");\n' % (webutils.escapeAttrJavaScriptStringDQ(oValue),);
                else:
                    sHtml += '    oData.addColumn("number", "%s");\n' % (webutils.escapeAttrJavaScriptStringDQ(oValue),);
                sHtml += '    oData.addColumn({type: "string", role: "annotation"});\n';
            # The data rows.
            sHtml += '    oData.addRows([\n';
            for oRow in aoTable[1:]:
                if oRow.sName:
                    sRow = '        [ "%s"' % (webutils.escapeAttrJavaScriptStringDQ(oRow.sName),);
                else:
                    sRow = '        [ null';
                for iValue, oValue in enumerate(oRow.aoValues):
                    if not utils.isString(oValue):
                        sRow += ', %s' % (oValue,);
                    else:
                        sRow += ', "%s"' % (webutils.escapeAttrJavaScriptStringDQ(oValue),);
                    if oRow.asValues[iValue]:
                        sRow += ', "%s"' % (webutils.escapeAttrJavaScriptStringDQ(oRow.asValues[iValue]),);
                    else:
                        sRow += ', null';
                sHtml += sRow + '],\n';
            sHtml += '    ]);\n';
        else:
            sHtml += '    var oData = google.visualization.arrayToDataTable([\n';
            for oRow in aoTable:
                sRow = '        [ "%s"' % (webutils.escapeAttrJavaScriptStringDQ(oRow.sName),);
                for oValue in oRow.aoValues:
                    if utils.isString(oValue):
                        sRow += ', "%s"' % (webutils.escapeAttrJavaScriptStringDQ(oValue),);
                    else:
                        sRow += ', %s' % (oValue,);
                sHtml += sRow + '],\n';
            sHtml += '    ]);\n';

        # Create and draw.
        if not fUseMaterial:
            sHtml += '    oGraph = new google.visualization.ColumnChart(document.getElementById("%s"));\n' \
                     '    oGraph.draw(oData, dGraphOptions);\n' \
                   % ( self._sId, );
        else:
            sHtml += '    oGraph = new google.charts.Bar(document.getElementById("%s"));\n' \
                     '    oGraph.draw(oData, google.charts.Bar.convertOptions(dGraphOptions));\n' \
                   % ( self._sId, );

        # clean and return.
        sHtml += '    oData = null;\n' \
                 '    return true;\n' \
                 '};\n';

        sHtml += '</script>\n' \
                 '</div>\n';
        return sHtml;


class WuiHlpLineGraph(WuiHlpGraphGoogleChartsBase):
    """
    Line graph.
    """

    ## @todo implement error bars.
    kfNoErrorBarsSupport = True;

    def __init__(self, sId, oData, oDisp = None, fErrorBarY = False):
        # oData must be a WuiHlpGraphDataTableEx like object.
        WuiHlpGraphGoogleChartsBase.__init__(self, sId, oData, oDisp);
        self._cMaxErrorBars = 12;
        self._fErrorBarY    = fErrorBarY;

    def setErrorBarY(self, fEnable):
        """ Enables or Disables error bars, making this work like a line graph. """
        self._fErrorBarY = fEnable;
        return True;

    def renderGraph(self): # pylint: disable=too-many-locals
        fSlideFilter = True;

        # Tooltips?
        cTooltips = 0;
        for oSeries in self._oData.aoSeries:
            cTooltips += oSeries.asHtmlTooltips is not None;

        # Unique on load function.
        global g_cGraphs;
        iGraph = g_cGraphs;
        g_cGraphs += 1;

        sHtml  = '<div id="%s">\n' % ( self._sId, );
        if fSlideFilter:
            sHtml += ' <table><tr><td><div id="%s_graph"/></td></tr><tr><td><div id="%s_filter"/></td></tr></table>\n' \
                   % ( self._sId, self._sId, );

        sHtml += '<script type="text/javascript" src="https://www.google.com/jsapi"></script>\n' \
                 '<script type="text/javascript">\n' \
                 'google.load("visualization", "1.0", { packages: ["corechart"%s] });\n' \
                 'google.setOnLoadCallback(tmDrawLineGraph%u);\n' \
                 'function tmDrawLineGraph%u()\n' \
                 '{\n' \
                 '    var fnResize;\n' \
                 '    var fnRedraw;\n' \
                 '    var idRedrawTimer = null;\n' \
                 '    var cxCur = getElementWidthById("%s") - 20;\n' \
                 '    var oGraph;\n' \
                 '    var oData = new google.visualization.DataTable();\n' \
                 '    var fpXYRatio = %u / %u;\n' \
                 '    var dGraphOptions = \n' \
                 '    {\n' \
                 '         "title":     "%s",\n' \
                 '         "width":     cxCur,\n' \
                 '         "height":    Math.round(cxCur / fpXYRatio),\n' \
                 '         "pointSize": 2,\n' \
                 '         "fontSize": %u,\n' \
                 '         "hAxis":     { "title": "%s", "minorGridlines": { count: 5 }},\n' \
                 '         "vAxis":     { "title": "%s", "minorGridlines": { count: 5 }},\n' \
                 '         "theme":     "maximized",\n' \
                 '         "tooltip":   { "isHtml": %s }\n' \
                 '    };\n' \
                % ( ', "controls"' if fSlideFilter else '',
                    iGraph,
                    iGraph,
                    self._sId,
                    self._cxGraph, self._cyGraph,
                    self._sTitle if self._sTitle is not None else '',
                    self._cPtFont * self._cDpiGraph / 72, # fudge
                    self._oData.sXUnit if self._oData.sXUnit else '',
                    self._oData.sYUnit if self._oData.sYUnit else '',
                    'true' if cTooltips > 0 else 'false',
                    );
        if fSlideFilter:
            sHtml += '    var oDashboard = new google.visualization.Dashboard(document.getElementById("%s"));\n' \
                     '    var oSlide = new google.visualization.ControlWrapper({\n' \
                     '        "controlType": "NumberRangeFilter",\n' \
                     '        "containerId": "%s_filter",\n' \
                     '        "options": {\n' \
                     '            "filterColumnIndex": 0,\n' \
                     '            "ui": { "width": getElementWidthById("%s") / 2 }, \n' \
                     '        }\n' \
                     '     });\n' \
                   % ( self._sId,
                       self._sId,
                       self._sId,);

        # Data variables.
        for iSeries, oSeries in enumerate(self._oData.aoSeries):
            sHtml += '    var aSeries%u = [\n' % (iSeries,);
            if oSeries.asHtmlTooltips is None:
                sHtml += '[%s,%s]' % ( oSeries.aoXValues[0], oSeries.aoYValues[0],);
                for i in range(1, len(oSeries.aoXValues)):
                    if (i & 16) == 0:   sHtml += '\n';
                    sHtml += ',[%s,%s]' % ( oSeries.aoXValues[i], oSeries.aoYValues[i], );
            else:
                sHtml += '[%s,%s,"%s"]' \
                       % ( oSeries.aoXValues[0], oSeries.aoYValues[0],
                           webutils.escapeAttrJavaScriptStringDQ(oSeries.asHtmlTooltips[0]),);
                for i in range(1, len(oSeries.aoXValues)):
                    if (i & 16) == 0:   sHtml += '\n';
                    sHtml += ',[%s,%s,"%s"]' \
                           % ( oSeries.aoXValues[i], oSeries.aoYValues[i],
                               webutils.escapeAttrJavaScriptStringDQ(oSeries.asHtmlTooltips[i]),);

            sHtml += '];\n'

        sHtml += '    oData.addColumn("number", "%s");\n' % (self._oData.sXUnit if self._oData.sXUnit else '',);
        cVColumns = 0;
        for oSeries in self._oData.aoSeries:
            sHtml += '    oData.addColumn("number", "%s");\n' % (oSeries.sName,);
            if oSeries.asHtmlTooltips:
                sHtml += '    oData.addColumn({"type": "string", "role": "tooltip", "p": {"html": true}});\n';
                cVColumns += 1;
            cVColumns += 1;
        sHtml += 'var i;\n'

        cVColumsDone = 0;
        for iSeries, oSeries in enumerate(self._oData.aoSeries):
            sVar = 'aSeries%u' % (iSeries,);
            sHtml += '    for (i = 0; i < %s.length; i++)\n' \
                     '    {\n' \
                     '        oData.addRow([%s[i][0]%s,%s[i][1]%s%s]);\n' \
                   % ( sVar,
                       sVar,
                       ',null' * cVColumsDone,
                       sVar,
                       '' if oSeries.asHtmlTooltips is None else ',%s[i][2]' % (sVar,),
                       ',null' * (cVColumns - cVColumsDone - 1 - (oSeries.asHtmlTooltips is not None)),
                     );
            sHtml += '    }\n' \
                     '    %s = null\n' \
                   % (sVar,);
            cVColumsDone += 1 + (oSeries.asHtmlTooltips is not None);

        # Create and draw.
        if fSlideFilter:
            sHtml += '    oGraph = new google.visualization.ChartWrapper({\n' \
                     '        "chartType": "LineChart",\n' \
                     '        "containerId": "%s_graph",\n' \
                     '        "options": dGraphOptions\n' \
                     '    });\n' \
                     '    oDashboard.bind(oSlide, oGraph);\n' \
                     '    oDashboard.draw(oData);\n' \
                   % ( self._sId, );
        else:
            sHtml += '    oGraph = new google.visualization.LineChart(document.getElementById("%s"));\n' \
                     '    oGraph.draw(oData, dGraphOptions);\n' \
                   % ( self._sId, );

        # Register a resize handler for redrawing the graph, using a timer to delay it.
        sHtml += '    fnRedraw = function() {\n' \
                 '        var cxNew = getElementWidthById("%s") - 6;\n' \
                 '        if (Math.abs(cxNew - cxCur) > 8)\n' \
                 '        {\n' \
                 '            cxCur = cxNew;\n' \
                 '            dGraphOptions["width"]  = cxNew;\n' \
                 '            dGraphOptions["height"] = Math.round(cxNew / fpXYRatio);\n' \
                 '            oGraph.draw(oData, dGraphOptions);\n' \
                 '        }\n' \
                 '        clearTimeout(idRedrawTimer);\n' \
                 '        idRedrawTimer = null;\n' \
                 '        return true;\n' \
                 '    };\n' \
                 '    fnResize = function() {\n' \
                 '        if (idRedrawTimer != null) { clearTimeout(idRedrawTimer); } \n' \
                 '        idRedrawTimer = setTimeout(fnRedraw, 512);\n' \
                 '        return true;\n' \
                 '    };\n' \
                 '    if (window.attachEvent)\n' \
                 '    { window.attachEvent("onresize", fnResize); }\n' \
                 '    else if (window.addEventListener)\n' \
                 '    { window.addEventListener("resize", fnResize, true); }\n' \
               % ( self._sId, );

        # clean up what the callbacks don't need.
        sHtml += '    oData = null;\n' \
                 '    aaaSeries = null;\n';

        # done;
        sHtml += '    return true;\n' \
                 '};\n';

        sHtml += '</script>\n' \
                 '</div>\n';
        return sHtml;


class WuiHlpLineGraphErrorbarY(WuiHlpLineGraph):
    """
    Line graph with an errorbar for the Y axis.
    """

    def __init__(self, sId, oData, oDisp = None):
        WuiHlpLineGraph.__init__(self, sId, oData, fErrorBarY = True);

