/*****************************************************************************
 * bookmarks.m: MacOS X Bookmarks window
 *****************************************************************************
 * Copyright (C) 2005 - 2007 the VideoLAN team
 * $Id: 7d0f9efbae2350e7927c3ef528c145cd383670a3 $
 *
 * Authors: Felix Kühne <fkuehne at videolan dot 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; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/


/*****************************************************************************
 * Note:
 * the code used to bind with VLC's modules is heavily based upon
 * ../wxwidgets/bookmarks.cpp, written by Gildas Bazin.
 * (he is a member of the VideoLAN team)
 *****************************************************************************/


/*****************************************************************************
 * Preamble
 *****************************************************************************/

#import "bookmarks.h"
#import "wizard.h"
#import <vlc_interface.h>

/*****************************************************************************
 * VLCExtended implementation
 *
 * implements the GUI functions for the window, the data source and the
 * delegate for o_tbl_dataTable
 *****************************************************************************/

@implementation VLCBookmarks

static VLCBookmarks *_o_sharedInstance = nil;

+ (VLCBookmarks *)sharedInstance
{
    return _o_sharedInstance ? _o_sharedInstance : [[self alloc] init];
}

- (id)init
{
    if (_o_sharedInstance) {
        [self dealloc];
    } else {
        _o_sharedInstance = [super init];
    }

    return _o_sharedInstance;
}

/*****************************************************************************
 * GUI methods
 *****************************************************************************/

- (void)awakeFromNib
{
    [self initStrings];
}

- (void)dealloc
{
    [super dealloc];
}

- (void)initStrings
{
    /* localise the items */
 
    /* main window */
    [o_bookmarks_window setTitle: _NS("Bookmarks")];
    [o_btn_add setTitle: _NS("Add")];
    [o_btn_clear setTitle: _NS("Clear")];
    [o_btn_edit setTitle: _NS("Edit")];
    [o_btn_extract setTitle: _NS("Extract")];
    [o_btn_rm setTitle: _NS("Remove")];
    [[[o_tbl_dataTable tableColumnWithIdentifier:@"description"] headerCell]
        setStringValue: _NS("Description")];
    [[[o_tbl_dataTable tableColumnWithIdentifier:@"size_offset"] headerCell]
        setStringValue: _NS("Position")];
    [[[o_tbl_dataTable tableColumnWithIdentifier:@"time_offset"] headerCell]
        setStringValue: _NS("Time")];
 
    /* edit window */
    [o_edit_btn_ok setTitle: _NS("OK")];
    [o_edit_btn_cancel setTitle: _NS("Cancel")];
    [o_edit_lbl_name setStringValue: _NS("Name")];
    [o_edit_lbl_time setStringValue: _NS("Time")];
    [o_edit_lbl_bytes setStringValue: _NS("Position")];
}

- (void)showBookmarks
{
    /* show the window, called from intf.m */
    [o_bookmarks_window displayIfNeeded];
    [o_bookmarks_window makeKeyAndOrderFront:nil];
}

- (IBAction)add:(id)sender
{
    /* add item to list */
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );

    if( !p_input ) return;
 
    seekpoint_t bookmark;

    if( !input_Control( p_input, INPUT_GET_BOOKMARK, &bookmark ) )
	{
		bookmark.psz_name = _("Untitled");
		input_Control( p_input, INPUT_ADD_BOOKMARK, &bookmark );
	}
 
    vlc_object_release( p_input );
 
    [o_tbl_dataTable reloadData];
}

- (IBAction)clear:(id)sender
{
    /* clear table */
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );
 
    if( !p_input )
        return;

    input_Control( p_input, INPUT_CLEAR_BOOKMARKS );

    vlc_object_release( p_input );
 
    [o_tbl_dataTable reloadData];
}

- (IBAction)edit:(id)sender
{
    /* put values to the sheet's fields and show sheet */
    /* we take the values from the core and not the table, because we cannot
     * really trust it */
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );
    seekpoint_t **pp_bookmarks;
    int i_bookmarks;
    int row;
    row = [o_tbl_dataTable selectedRow];
 
    if( !p_input && row < 0 )
        return;

    if( input_Control( p_input, INPUT_GET_BOOKMARKS, &pp_bookmarks,
        &i_bookmarks ) != VLC_SUCCESS )
    {
        vlc_object_release( p_input );
        return;
    }

    [o_edit_fld_name setStringValue: [NSString stringWithUTF8String:
            pp_bookmarks[row]->psz_name]];
    [o_edit_fld_time setStringValue: [[NSNumber numberWithInt:
            (pp_bookmarks[row]->i_time_offset / 1000000)] stringValue]];
    [o_edit_fld_bytes setStringValue: [[NSNumber numberWithInt:
            pp_bookmarks[row]->i_byte_offset] stringValue]];
 
    /* Just keep the pointer value to check if it
     * changes. Note, we don't need to keep a reference to the object.
     * so release it now. */
    p_old_input = p_input;
    vlc_object_release( p_input );

    [NSApp beginSheet: o_edit_window
        modalForWindow: o_bookmarks_window
        modalDelegate: o_edit_window
        didEndSelector: nil
        contextInfo: nil];

    // Clear the bookmark list
    for( int i = 0; i < i_bookmarks; i++)
        vlc_seekpoint_Delete( pp_bookmarks[i] );
    free( pp_bookmarks );

}

- (IBAction)edit_cancel:(id)sender
{
    /* close sheet */
    [NSApp endSheet:o_edit_window];
    [o_edit_window close];
}

- (IBAction)edit_ok:(id)sender
{
    /* save field contents and close sheet */
     seekpoint_t **pp_bookmarks;
    int i_bookmarks, i;
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );
 
    if( !p_input )
    {
        NSBeginCriticalAlertSheet(_NS("No input"), _NS("OK"),
                @"", @"", o_bookmarks_window, nil, nil, nil, nil, _NS("No "
                "input found. A stream must be playing or paused for "
                "bookmarks to work."));
        return;
    }
    if( p_old_input != p_input )
    {
        NSBeginCriticalAlertSheet(_NS("Input has changed"), _NS("OK"),
            @"", @"", o_bookmarks_window, nil, nil, nil, nil, _NS("Input "
            "has changed, unable to save bookmark. Suspending playback with "
            "\"Pause\" while editing bookmarks to ensure to keep the same "
            "input."));
        vlc_object_release( p_input );
        return;
    }
 
    if( input_Control( p_input, INPUT_GET_BOOKMARKS, &pp_bookmarks,
        &i_bookmarks ) != VLC_SUCCESS )
    {
        vlc_object_release( p_input );
        return;
    }

    i = [o_tbl_dataTable selectedRow];
 
    free( pp_bookmarks[i]->psz_name );

    pp_bookmarks[i]->psz_name = strdup([[o_edit_fld_name stringValue] UTF8String]);
    pp_bookmarks[i]->i_byte_offset = [[o_edit_fld_bytes stringValue] intValue];
    pp_bookmarks[i]->i_time_offset = ([[o_edit_fld_time stringValue] intValue]  * 1000000);
 
    if( input_Control( p_input, INPUT_CHANGE_BOOKMARK, pp_bookmarks[i], i )
        != VLC_SUCCESS )
    {
        msg_Warn( VLCIntf, "Unable to change the bookmark");
        goto clear;
    }
 
    [o_tbl_dataTable reloadData];
    vlc_object_release( p_input );
 
 
    [NSApp endSheet: o_edit_window];
    [o_edit_window close];

clear:
    // Clear the bookmark list
    for( int i = 0; i < i_bookmarks; i++)
        vlc_seekpoint_Delete( pp_bookmarks[i] );
    free( pp_bookmarks );
}

- (IBAction)extract:(id)sender
{
    /* extract */
    if( [o_tbl_dataTable numberOfSelectedRows] < 2 )
    {
        NSBeginAlertSheet(_NS("Invalid selection"), _NS("OK"),
            @"", @"", o_bookmarks_window, nil, nil, nil, nil,
            _NS("Two bookmarks have to be selected."));
        return;
    }
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );
    if( !p_input )
    {
        NSBeginCriticalAlertSheet(_NS("No input found"), _NS("OK"),
            @"", @"", o_bookmarks_window, nil, nil, nil, nil,
            _NS("The stream must be playing or paused for bookmarks to work."));
        return;
    }
 
    seekpoint_t **pp_bookmarks;
    int i_bookmarks ;
    int i_first = -1;
    int i_second = -1;
    int x = 0;
    int c = 0;
    while (c != 2)
    {
        if([o_tbl_dataTable isRowSelected:x])
        {
            if (i_first == -1)
            {
                i_first = x;
                c = 1;
            }
            else if (i_second == -1)
            {
                i_second = x;
                c = 2;
            }
        }
        x = (x + 1);
    }
 
    msg_Dbg( VLCIntf, "got the bookmark-indexes");
 
    if( input_Control( p_input, INPUT_GET_BOOKMARKS, &pp_bookmarks,
        &i_bookmarks ) != VLC_SUCCESS )
    {
        vlc_object_release( p_input );
        msg_Err( VLCIntf, "already defined bookmarks couldn't be retrieved");
        return;
    }
    msg_Dbg( VLCIntf, "calling wizard");

    char *psz_uri = input_item_GetURI( input_GetItem( p_input ) );
    [[[VLCMain sharedInstance] wizard] initWithExtractValuesFrom:
            [[NSNumber numberWithInt:
            (pp_bookmarks[i_first]->i_time_offset/1000000)] stringValue]
            to: [[NSNumber numberWithInt:
            (pp_bookmarks[i_second]->i_time_offset/1000000)] stringValue]
            ofItem: [NSString stringWithUTF8String: psz_uri]];
    free( psz_uri );
    vlc_object_release( p_input );
    msg_Dbg( VLCIntf, "released input");

    // Clear the bookmark list
    for( int i = 0; i < i_bookmarks; i++)
        vlc_seekpoint_Delete( pp_bookmarks[i] );
    free( pp_bookmarks );
}

- (IBAction)goToBookmark:(id)sender
{
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );
 
    if( !p_input ) return;

    input_Control( p_input, INPUT_SET_BOOKMARK, [o_tbl_dataTable selectedRow] );

    vlc_object_release( p_input );
}

- (IBAction)remove:(id)sender
{
    /* remove selected item */
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );
 
    if( !p_input ) return;

    int i_focused = [o_tbl_dataTable selectedRow];

    if( i_focused >= 0 )
        input_Control( p_input, INPUT_DEL_BOOKMARK, i_focused );

    vlc_object_release( p_input );
 
    [o_tbl_dataTable reloadData];
}

/*****************************************************************************
 * callback stuff
 *****************************************************************************/

-(id)dataTable
{
    return o_tbl_dataTable;
}

/*****************************************************************************
 * data source methods
 *****************************************************************************/

- (NSInteger)numberOfRowsInTableView:(NSTableView *)theDataTable
{
    /* return the number of bookmarks */
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );
    seekpoint_t **pp_bookmarks;
    int i_bookmarks;
 
    if( !p_input ) return 0;
    else if( input_Control( p_input, INPUT_GET_BOOKMARKS, &pp_bookmarks,
                       &i_bookmarks ) != VLC_SUCCESS )
    {
        vlc_object_release( p_input );
        return 0;
    }
    else {
        vlc_object_release( p_input );
        // Clear the bookmark list
        for( int i = 0; i < i_bookmarks; i++)
            vlc_seekpoint_Delete( pp_bookmarks[i] );
        free( pp_bookmarks );
        return i_bookmarks;
    }
}

- (id)tableView:(NSTableView *)theDataTable objectValueForTableColumn:
    (NSTableColumn *)theTableColumn row: (NSInteger)row
{
    /* return the corresponding data as NSString */
    input_thread_t * p_input = pl_CurrentInput( VLCIntf );
    seekpoint_t **pp_bookmarks;
    int i_bookmarks;
    char *toBeReturned;
    int i_toBeReturned = 0;
    id ret;

    if( !p_input ) return @"";
    else if( input_Control( p_input, INPUT_GET_BOOKMARKS, &pp_bookmarks,
                       &i_bookmarks ) != VLC_SUCCESS )
    {
        ret = @"";
    }
    else
    {
        if ([[theTableColumn identifier] isEqualToString: @"description"])
        {
            toBeReturned = pp_bookmarks[row]->psz_name;
            ret = [NSString stringWithUTF8String: toBeReturned];
        }
        else if ([[theTableColumn identifier] isEqualToString: @"size_offset"])
        {
            i_toBeReturned = pp_bookmarks[row]->i_byte_offset;
            ret = [[NSNumber numberWithInt: i_toBeReturned] stringValue];
        }
        else if ([[theTableColumn identifier] isEqualToString: @"time_offset"])
        {
            i_toBeReturned = pp_bookmarks[row]->i_time_offset;
            ret = [[NSNumber numberWithInt: (i_toBeReturned / 1000000)]
                stringValue];
        }
        else
        {
            /* may not happen, just in case */
            msg_Err( VLCIntf, "unknown table column identifier (%s) while "
                "updating the bookmark table", [[theTableColumn identifier]
                UTF8String] );
            ret = @"unknown identifier";
        }

        // Clear the bookmark list
        for( int i = 0; i < i_bookmarks; i++)
            vlc_seekpoint_Delete( pp_bookmarks[i] );
        free( pp_bookmarks );
    }
    vlc_object_release( p_input );
    return ret;
}

/*****************************************************************************
 * delegate methods
 *****************************************************************************/

- (void)tableViewSelectionDidChange:(NSNotification *)aNotification
{
    /* check whether a row is selected and en-/disable the edit/remove buttons */
    if ([o_tbl_dataTable selectedRow] == -1)
    {
        /* no row is selected */
        [o_btn_edit setEnabled: NO];
        [o_btn_rm setEnabled: NO];
        [o_btn_extract setEnabled: NO];
    }
    else
    {
        /* a row is selected */
        [o_btn_edit setEnabled: YES];
        [o_btn_rm setEnabled: YES];
        if ([o_tbl_dataTable numberOfSelectedRows] == 2)
        {
            [o_btn_extract setEnabled: YES];
        }
    }
}

@end
