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/* global moment */
( function () {
/**
* This is a progress bar for monitoring multiple objects, giving summary view
*
* @class mw.GroupProgressbar
* @constructor
* @param {string} selector
* @param {mw.UploadWizardUpload[]} uploads
* @param {string[]} successStates
* @param {string[]} errorStates
* @param {string} progressProperty
* @param {string} weightProperty
*/
mw.GroupProgressBar = function ( selector, uploads, successStates, errorStates, progressProperty, weightProperty ) {
this.$selector = $( selector );
this.$selector.empty().append(
$( '<div>' ).addClass( 'mediauploader-progress-inner' ).append(
$( '<div>' ).addClass( 'mediauploader-progress-bar-etr-container' ).append(
$( '<div>' ).addClass( 'mediauploader-progress-bar-etr' ).hide().append(
$( '<div>' ).addClass( 'mediauploader-etr' )
)
),
$( '<div>' ).addClass( 'mediauploader-count' )
)
);
this.progressBarWidget = new OO.ui.ProgressBarWidget( {
classes: [ 'mediauploader-progress-bar' ],
progress: 0
} );
this.$selector.find( '.mediauploader-progress-bar-etr' )
.prepend( this.progressBarWidget.$element );
this.uploads = uploads;
this.successStates = successStates;
this.errorStates = errorStates;
this.progressProperty = progressProperty;
this.weightProperty = weightProperty;
this.beginTime = undefined;
};
mw.GroupProgressBar.prototype = {
/**
* Show the progress bar
*/
showBar: function () {
// FIXME: Use CSS transition
// eslint-disable-next-line no-jquery/no-fade
this.$selector.find( '.mediauploader-progress-bar-etr' ).fadeIn( 200 );
},
/**
* loop around the uploads, summing certain properties for a weighted total fraction
*/
start: function () {
var bar = this,
shown = false;
this.setBeginTime();
function displayer() {
var totalWeight = 0.0,
fraction = 0.0,
successStateCount = 0,
errorStateCount = 0,
hasData = false;
bar.uploads.forEach( function ( upload ) {
totalWeight += upload[ bar.weightProperty ];
} );
bar.uploads.forEach( function ( upload ) {
if ( upload.state === 'aborted' ) {
return;
}
if ( bar.successStates.indexOf( upload.state ) !== -1 ) {
successStateCount++;
}
if ( bar.errorStates.indexOf( upload.state ) !== -1 ) {
errorStateCount++;
}
if ( upload[ bar.progressProperty ] !== undefined ) {
fraction += upload[ bar.progressProperty ] * ( upload[ bar.weightProperty ] / totalWeight );
if ( upload[ bar.progressProperty ] > 0 ) {
hasData = true;
}
}
} );
// sometimes, the first data we have just tells us that it's over. So only show the bar
// if we have good data AND the fraction is less than 1.
if ( hasData && fraction < 1.0 ) {
if ( !shown ) {
bar.showBar();
shown = true;
}
bar.showProgress( fraction );
}
bar.showCount( successStateCount );
if ( successStateCount + errorStateCount < bar.uploads.length - bar.countRemoved() ) {
setTimeout( displayer, 200 );
} else {
bar.showProgress( 1.0 );
bar.finished = true;
setTimeout( function () {
bar.hideBar();
}, 500 );
}
}
displayer();
},
/**
* Hide the progress bar with a slideup motion
*/
hideBar: function () {
// FIXME: Use CSS transition
// eslint-disable-next-line no-jquery/no-fade
this.$selector.find( '.mediauploader-progress-bar-etr' ).fadeOut( 200 );
},
/**
* sets the beginning time (useful for figuring out estimated time remaining)
* if time parameter omitted, will set beginning time to now
*
* @param {number} [time] The time this bar is presumed to have started (epoch milliseconds)
*/
setBeginTime: function ( time ) {
this.beginTime = time || Date.now();
},
/**
* Show overall progress for the entire UploadWizard
* The current design doesn't have individual progress bars, just one giant one.
* We did some tricky calculations in startUploads to try to weight each individual file's progress against
* the overall progress.
*
* @param {number} fraction The amount of whatever it is that's done whatever it's done
*/
showProgress: function ( fraction ) {
var t, timeString,
remainingTime = this.getRemainingTime( fraction );
this.progressBarWidget.setProgress( parseInt( fraction * 100, 10 ) );
if ( remainingTime !== null ) {
if ( remainingTime === 0 ) {
timeString = mw.message( 'mediauploader-finished' ).text();
} else if ( remainingTime < 1000 ) {
timeString = mw.message( 'mediauploader-almost-finished' ).text();
} else {
t = moment.duration( remainingTime );
timeString = t.humanize();
}
this.$selector.find( '.mediauploader-etr' ).text( timeString );
}
},
/**
* Calculate remaining time for all uploads to complete.
*
* @param {number} fraction Fraction of progress to show
* @return {number} Estimated time remaining (in milliseconds)
*/
getRemainingTime: function ( fraction ) {
var elapsedTime, rate;
if ( this.beginTime ) {
elapsedTime = Date.now() - this.beginTime;
if ( fraction > 0.0 && elapsedTime > 0 ) { // or some other minimums for good data
rate = fraction / elapsedTime;
return ( ( 1.0 - fraction ) / rate );
}
}
return null;
},
/**
* Show the overall count as we upload
*
* @param {number} completed The number of items that have done whatever has been done e.g. in "uploaded 2 of 5", this is the 2
*/
showCount: function ( completed ) {
var total = this.uploads.length - this.countRemoved();
this.$selector
.find( '.mediauploader-count' )
// Hide if there are no uploads, show otherwise
.toggle( total !== 0 )
.html( mw.message( 'mediauploader-upload-count', completed, total ).escaped() );
},
countRemoved: function () {
var count = 0;
this.uploads.forEach( function ( upload ) {
if ( !upload || upload.state === 'aborted' ) {
count += 1;
}
} );
return count;
}
};
}() );