/******************************************************************************
 * Copyright (c) 2010-2012 Transmission authors and contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *****************************************************************************/

#include <libtransmission/transmission.h>
#include <libtransmission/utils.h> //tr_getRatio()

#import "InfoActivityViewController.h"
#import "NSApplicationAdditions.h"
#import "NSStringAdditions.h"
#import "PiecesView.h"
#import "Torrent.h"

#define PIECES_CONTROL_PROGRESS 0
#define PIECES_CONTROL_AVAILABLE 1

@interface InfoActivityViewController (Private)

- (void) setupInfo;

@end

@implementation InfoActivityViewController

- (instancetype) init
{
    if ((self = [super initWithNibName: @"InfoActivityView" bundle: nil]))
    {
        self.title = NSLocalizedString(@"Activity", "Inspector view -> title");
    }

    return self;
}

- (void) awakeFromNib
{
    [fTransferSectionLabel sizeToFit];
    [fDatesSectionLabel sizeToFit];
    [fTimeSectionLabel sizeToFit];

    NSArray * labels = @[ fStateLabel, fProgressLabel, fHaveLabel, fDownloadedLabel, fUploadedLabel, fFailedDLLabel, fRatioLabel, fErrorLabel, fDateAddedLabel, fDateCompletedLabel, fDateActivityLabel, fDownloadTimeLabel, fSeedTimeLabel ];

    CGFloat oldMaxWidth = 0.0, originX, newMaxWidth = 0.0;
    for (NSTextField * label in labels)
    {
        const NSRect oldFrame = label.frame;
        if (oldFrame.size.width > oldMaxWidth)
        {
            oldMaxWidth = oldFrame.size.width;
            originX = oldFrame.origin.x;
        }

        [label sizeToFit];
        const CGFloat newWidth = label.bounds.size.width;
        if (newWidth > newMaxWidth)
            newMaxWidth = newWidth;
    }

    for (NSTextField * label in labels)
    {
        NSRect frame = label.frame;
        frame.origin.x = originX + (newMaxWidth - frame.size.width);
        label.frame = frame;
    }

    NSArray * fields = @[ fDateAddedField, fDateCompletedField, fDateActivityField, fStateField, fProgressField, fHaveField, fDownloadedTotalField, fUploadedTotalField, fFailedHashField, fRatioField, fDownloadTimeField, fSeedTimeField, fErrorScrollView ];

    const CGFloat widthIncrease = newMaxWidth - oldMaxWidth;
    for (NSView * field in fields) {
        NSRect frame = field.frame;
        frame.origin.x += widthIncrease;
        frame.size.width -= widthIncrease;
        field.frame = frame;
    }

    //set the click action of the pieces view
    #warning after 2.8 just hook this up in the xib
    fPiecesView.action = @selector(updatePiecesView:);
    fPiecesView.target = self;
}

- (void) dealloc
{
    [NSNotificationCenter.defaultCenter removeObserver: self];
}

- (void) setInfoForTorrents: (NSArray *) torrents
{
    //don't check if it's the same in case the metadata changed
    fTorrents = torrents;

    fSet = NO;
}

- (void) updateInfo
{
    if (!fSet)
        [self setupInfo];

    const NSInteger numberSelected = fTorrents.count;
    if (numberSelected == 0)
        return;

    uint64_t have = 0, haveVerified = 0, downloadedTotal = 0, uploadedTotal = 0, failedHash = 0;
    NSDate * lastActivity = nil;
    for (Torrent * torrent in fTorrents)
    {
        have += torrent.haveTotal;
        haveVerified += torrent.haveVerified;
        downloadedTotal += torrent.downloadedTotal;
        uploadedTotal += torrent.uploadedTotal;
        failedHash += torrent.failedHash;

        NSDate * nextLastActivity;
        if ((nextLastActivity = torrent.dateActivity))
            lastActivity = lastActivity ? [lastActivity laterDate: nextLastActivity] : nextLastActivity;
    }

    if (have == 0)
        fHaveField.stringValue = [NSString stringForFileSize: 0];
    else
    {
        NSString * verifiedString = [NSString stringWithFormat: NSLocalizedString(@"%@ verified", "Inspector -> Activity tab -> have"),
                                        [NSString stringForFileSize: haveVerified]];
        if (have == haveVerified)
            fHaveField.stringValue = verifiedString;
        else
            fHaveField.stringValue = [NSString stringWithFormat: @"%@ (%@)", [NSString stringForFileSize: have], verifiedString];
    }

    fDownloadedTotalField.stringValue = [NSString stringForFileSize: downloadedTotal];
    fUploadedTotalField.stringValue = [NSString stringForFileSize: uploadedTotal];
    fFailedHashField.stringValue = [NSString stringForFileSize: failedHash];

    fDateActivityField.objectValue = lastActivity;

    if (numberSelected == 1)
    {
        Torrent * torrent = fTorrents[0];

        fStateField.stringValue = torrent.stateString;

        NSString * progressString = [NSString percentString: torrent.progress longDecimals: YES];
        if (torrent.folder)
        {
            NSString * progressSelectedString = [NSString stringWithFormat:
                                                    NSLocalizedString(@"%@ selected", "Inspector -> Activity tab -> progress"),
                                                    [NSString percentString: torrent.progressDone longDecimals: YES]];
            progressString = [progressString stringByAppendingFormat: @" (%@)", progressSelectedString];
        }
        fProgressField.stringValue = progressString;

        fRatioField.stringValue = [NSString stringForRatio: torrent.ratio];

        NSString * errorMessage = torrent.errorMessage;
        if (![errorMessage isEqualToString: fErrorMessageView.string])
            fErrorMessageView.string = errorMessage;

        fDateCompletedField.objectValue = torrent.dateCompleted;

        //uses a relative date, so can't be set once
        fDateAddedField.objectValue = torrent.dateAdded;
        
        static NSDateComponentsFormatter *timeFormatter;
        static dispatch_once_t onceToken;
        dispatch_once(&onceToken, ^{
            timeFormatter = [NSDateComponentsFormatter new];
            timeFormatter.unitsStyle = NSDateComponentsFormatterUnitsStyleShort;
            timeFormatter.allowedUnits = NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
            timeFormatter.zeroFormattingBehavior = NSDateComponentsFormatterZeroFormattingBehaviorDropLeading;
        });
        
        fDownloadTimeField.stringValue = [timeFormatter stringFromTimeInterval:torrent.secondsDownloading];
        fSeedTimeField.stringValue = [timeFormatter stringFromTimeInterval:torrent.secondsSeeding];
        
        [fPiecesView updateView];
    }
    else if (numberSelected > 1)
    {
        fRatioField.stringValue = [NSString stringForRatio: tr_getRatio(uploadedTotal, downloadedTotal)];
    }
    else;
}

- (void) setPiecesView: (id) sender
{
    const BOOL availability = [sender selectedSegment] == PIECES_CONTROL_AVAILABLE;
    [NSUserDefaults.standardUserDefaults setBool: availability forKey: @"PiecesViewShowAvailability"];
    [self updatePiecesView:nil];
}


- (void) updatePiecesView: (id) sender
{
    const BOOL piecesAvailableSegment = [NSUserDefaults.standardUserDefaults boolForKey: @"PiecesViewShowAvailability"];

    [fPiecesControl setSelected: piecesAvailableSegment forSegment: PIECES_CONTROL_AVAILABLE];
    [fPiecesControl setSelected: !piecesAvailableSegment forSegment: PIECES_CONTROL_PROGRESS];

    [fPiecesView updateView];
}

- (void) clearView
{
    [fPiecesView clearView];
}

@end

@implementation InfoActivityViewController (Private)

- (void) setupInfo
{
    const NSUInteger count = fTorrents.count;
    if (count != 1)
    {
        if (count == 0)
        {
            fHaveField.stringValue = @"";
            fDownloadedTotalField.stringValue = @"";
            fUploadedTotalField.stringValue = @"";
            fFailedHashField.stringValue = @"";
            fDateActivityField.objectValue = @""; //using [field setStringValue: @""] causes "December 31, 1969 7:00 PM" to be displayed, at least on 10.7.3
            fRatioField.stringValue = @"";
        }

        fStateField.stringValue = @"";
        fProgressField.stringValue = @"";

        fErrorMessageView.string = @"";

        //using [field setStringValue: @""] causes "December 31, 1969 7:00 PM" to be displayed, at least on 10.7.3
        fDateAddedField.objectValue = @"";
        fDateCompletedField.objectValue = @"";

        fDownloadTimeField.stringValue = @"";
        fSeedTimeField.stringValue = @"";

        [fPiecesControl setSelected: NO forSegment: PIECES_CONTROL_AVAILABLE];
        [fPiecesControl setSelected: NO forSegment: PIECES_CONTROL_PROGRESS];
        fPiecesControl.enabled =  NO;
        [fPiecesView setTorrent: nil];
    }
    else
    {
        Torrent * torrent = fTorrents[0];

        const BOOL piecesAvailableSegment = [NSUserDefaults.standardUserDefaults boolForKey: @"PiecesViewShowAvailability"];
        [fPiecesControl setSelected: piecesAvailableSegment forSegment: PIECES_CONTROL_AVAILABLE];
        [fPiecesControl setSelected: !piecesAvailableSegment forSegment: PIECES_CONTROL_PROGRESS];
        fPiecesControl.enabled = YES;

        [fPiecesView setTorrent: torrent];
    }

    fSet = YES;
}

@end