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//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of SUSE LLC nor the names of its contributors may be
// used to endorse or promote products derived from this software without
// specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
// *************************************************************************
//
// app/viewer.js
//
// =========================
// Multi-day interval viewer
// =========================
//
// Given a multi-day interval object, trigger AJAX call "GET holiday/:tsrange"
// where tsrange is [ "beginDate 00:00", "endDate 23:59" ) - which will include
// all dates in the interval range and allow us to determine which ones are
// weekends/holidays and which are not.
//
// In the success function of that AJAX call, populate the haw ("holidays and
// weekends") object from the AJAX payload. A function "holidayOrWeekend()"
// takes each date string, canonicalizes it, and
// looks it up in the "haw" lookup object, and return true or false as
// appropriate.
//
// Next, the intervals-to-be-viewed array will be processed. First, to each
// date in haw, add an "intervals" array that will be empty at first. Second,
// iterate over all the intervals-to-be-viewed and push them into the respective
// "intervals" array in haw. At the same time, convert the time range string
// (e.g. "08:00-08:10") into a startTime-duration object (e.g. { "startTime":
// "08:00", "duration": "10" } where "duration" is always in minutes.
//
// Now, haw contains all information needed to construct the SVG blocks.
//
// Iterate over haw, writing SVG blocks. When a non-holiday/weekend date is
// detected immediately following a holiday/weekend date (that means Monday),
// insert a scale SVG block unless it is the first or last date in haw.
//
// At the end, draw a legend linking the colors to activity codes and write
// the total number of hours associated with each activity code.
//
//

"use strict";

define ([
    "jquery",
    "app/caches",
    "app/svg-lib",
    "ajax",
    "current-user",
    "datetime",
], function (
    $,
    appCaches,
    svgLib,
    ajax,
    currentUser,
    dt,
)
{

    var haw,
        sortedDates,

        entryPoint = function (obj) {
            // generate viewer HTML
            var cu = currentUser('obj'),
                date,
                i,
                r = '',
                lwhow = false; // "Last [date] Was a Holiday Or Weekend"
            console.log("currentUserObject", cu);
            if (cu.fullname) {
                r += '<b>' + cu.fullname + '</b>';
            } else {
                r += '<b>' + cu.nick + '</b>';
            }
            r += '<br><br>';
            r += "Intervals (scheduled and clocked) during period from " + obj.beginDate + " to " + obj.endDate;
            r += '<br><br>';
            r += svgLib.dayViewerScale();
            for (i = 0; i < sortedDates.length; i += 1) {
                // draw new scale if needed (for each week, more or less)
                date = sortedDates[i];
                if (lwhow && ! holidayOrWeekend(date) && i !== sortedDates.length - 1) {
                    r += svgLib.dayViewerScale();
                }
                lwhow = holidayOrWeekend(date);
                r += svgLib.dayViewerIntervals(date, haw[date], lwhow);
            }
            r += svgLib.dayViewerScale();
            return r;
        },

        addScheduledIntervals = function (obj) {
            var cu = currentUser('obj'),
                i,
                tsr = '[ ' + obj.beginDate + ' 00:00, ' + obj.endDate + ' 24:00 )',