/**

 * $Id$

 *

 * Core Cocoa-based user interface

 *

 * Copyright (c) 2008 Nathan Keynes.

 *

 * 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.

 */

#include <AppKit/AppKit.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <sys/time.h>

#include "lxdream.h"

#include "dream.h"

#include "dreamcast.h"

#include "config.h"

#include "display.h"

#include "gui.h"

#include "gdrom/gdrom.h"

#include "gdlist.h"

#include "loader.h"

#include "cocoaui/cocoaui.h"

void cocoa_gui_update( void );

void cocoa_gui_start( void );

void cocoa_gui_stop( void );

void cocoa_gui_run_later( void );

uint32_t cocoa_gui_run_slice( uint32_t nanosecs );

struct dreamcast_module cocoa_gui_module = { "gui", NULL,

        cocoa_gui_update, 

        cocoa_gui_start, 

        cocoa_gui_run_slice, 

        cocoa_gui_stop, 

        NULL, NULL };

/**

 * Count of running nanoseconds - used to cut back on the GUI runtime

 */

static uint32_t cocoa_gui_nanos = 0;

static uint32_t cocoa_gui_ticks = 0;

static struct timeval cocoa_gui_lasttv;

static BOOL cocoa_gui_autorun = NO;

static BOOL cocoa_gui_is_running = NO;

static LxdreamMainWindow *mainWindow = NULL;

@interface NSApplication (PrivateAdditions)

- (void) setAppleMenu:(NSMenu *)aMenu;

@end

gboolean cocoa_gui_disc_changed( gdrom_disc_t disc, const gchar *disc_name, void *user_data )

{

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    LxdreamMainWindow *window = (LxdreamMainWindow *)user_data;

    [window updateTitle];

    [pool release];

    return TRUE;

}

/**

 * Produces the menu title by looking the text up in gettext, removing any

 * underscores, and returning the result as an NSString.

 */

static NSString *NSMENU_( const char *text )

{

    const char *s = gettext(text);

    char buf[strlen(s)+1];

    char *d = buf;

    while( *s != '\0' ) {

        if( *s != '_' ) {

            *d++ = *s;

        }

        s++;

    }

    *d = '\0';

    return [NSString stringWithUTF8String: buf];

}

static void cocoa_gui_create_menu(void)

{

    NSMenu *appleMenu, *services;

    NSMenuItem *menuItem;

    NSString *title;

    NSString *appName;

    appName = @"Lxdream";

    appleMenu = [[NSMenu alloc] initWithTitle:@""];

    /* Add menu items */

    title = [@"About " stringByAppendingString:appName];

    [appleMenu addItemWithTitle:title action:@selector(about_action:) keyEquivalent:@""];

    [appleMenu addItem:[NSMenuItem separatorItem]];

    [appleMenu addItemWithTitle: NSMENU_("_Preferences...") action:@selector(preferences_action:) keyEquivalent:@","];

    // Services Menu

    [appleMenu addItem:[NSMenuItem separatorItem]];

    services = [[[NSMenu alloc] init] autorelease];

    [appleMenu addItemWithTitle: NS_("Services") action:nil keyEquivalent:@""];

    [appleMenu setSubmenu: services forItem: [appleMenu itemWithTitle: @"Services"]];

    // Hide AppName

    title = [@"Hide " stringByAppendingString:appName];

    [appleMenu addItemWithTitle:title action:@selector(hide:) keyEquivalent:@"h"];

    // Hide Others

    menuItem = (NSMenuItem *)[appleMenu addItemWithTitle:@"Hide Others" 

                              action:@selector(hideOtherApplications:) 

                              keyEquivalent:@"h"];

    [menuItem setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];

    // Show All

    [appleMenu addItemWithTitle:@"Show All" action:@selector(unhideAllApplications:) keyEquivalent:@""];

    [appleMenu addItem:[NSMenuItem separatorItem]];

    // Quit AppName

    title = [@"Quit " stringByAppendingString:appName];

    [appleMenu addItemWithTitle:title action:@selector(terminate:) keyEquivalent:@"q"];

    /* Put menu into the menubar */

    menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil  keyEquivalent:@""];

    [menuItem setSubmenu: appleMenu];

    NSMenu *menu = [NSMenu new];

    [menu addItem: menuItem];

    NSMenu *gdromMenu = cocoa_gdrom_menu_new();

    NSMenu *fileMenu = [[NSMenu alloc] initWithTitle: NSMENU_("_File")];

    [fileMenu addItemWithTitle: NSMENU_("Load _Binary...") action: @selector(load_binary_action:) keyEquivalent: @"b"];

    [[fileMenu addItemWithTitle: NSMENU_("_GD-Rom") action: nil keyEquivalent: @""]

      setSubmenu: gdromMenu];

    [fileMenu addItem: [NSMenuItem separatorItem]];

    [[fileMenu addItemWithTitle: NSMENU_("_Reset") action: @selector(reset_action:) keyEquivalent: @"r"]

      setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];

    [fileMenu addItemWithTitle: NSMENU_("_Pause") action: @selector(pause_action:) keyEquivalent: @"p"];

    [fileMenu addItemWithTitle: NS_("Resume") action: @selector(run_action:) keyEquivalent: @"r"];

    [fileMenu addItem: [NSMenuItem separatorItem]];

    [fileMenu addItemWithTitle: NSMENU_("_Load State...") action: @selector(load_action:) keyEquivalent: @"o"];

    [fileMenu addItemWithTitle: NSMENU_("_Save State...") action: @selector(save_action:) keyEquivalent: @"s"];

    menuItem = [[NSMenuItem alloc] initWithTitle:NSMENU_("_File") action: nil keyEquivalent: @""];

    [menuItem setSubmenu: fileMenu];

    [menu addItem: menuItem];

    /* Tell the application object that this is now the application menu */

    [NSApp setMainMenu: menu];

    [NSApp setAppleMenu: appleMenu];

    [NSApp setServicesMenu: services];

    /* Finally give up our references to the objects */

    [appleMenu release];

    [menuItem release];

    [menu release];

}

@interface LxdreamDelegate : NSObject

@end

@implementation LxdreamDelegate

- (void)windowWillClose: (NSNotification *)notice

{

    dreamcast_shutdown();

    exit(0);

}

- (void)windowDidBecomeMain: (NSNotification *)notice

{

    if( cocoa_gui_autorun ) {

        cocoa_gui_autorun = NO;

        gui_run_later();

    }

}

- (void)windowDidBecomeKey: (NSNotification *)notice

{

    display_set_focused( TRUE );

}

- (void)windowDidResignKey: (NSNotification *)notice

{

    display_set_focused( FALSE );

    [mainWindow setIsGrabbed: NO];

}

- (BOOL)application: (NSApplication *)app openFile: (NSString *)filename

{

    const gchar *cname = [filename UTF8String];

    if( file_load_magic(cname) ) {

        // Queue up a run event

        gui_run_later();

        return YES;

    } else {

        return NO;

    }

}

- (void) about_action: (id)sender

{

    NSArray *keys = [NSArray arrayWithObjects: @"Version", @"Copyright", nil];

    NSArray *values = [NSArray arrayWithObjects: NS_(lxdream_full_version), NS_(lxdream_copyright),  nil];

    NSDictionary *options= [NSDictionary dictionaryWithObjects: values forKeys: keys];

    [NSApp orderFrontStandardAboutPanelWithOptions: options];

}

- (void) preferences_action: (id)sender

{

    cocoa_gui_show_preferences();

}

- (void) load_action: (id)sender

{

    NSOpenPanel *panel = [NSOpenPanel openPanel];

    const gchar *dir = lxdream_get_config_value(CONFIG_SAVE_PATH);

    NSString *path = (dir == NULL ? NSHomeDirectory() : [NSString stringWithCString: dir]);

    NSArray *fileTypes = [NSArray arrayWithObject: @"dst"];

    int result = [panel runModalForDirectory: path file: nil types: fileTypes];

    if( result == NSOKButton && [[panel filenames] count] > 0 ) {

        NSString *filename = [[panel filenames] objectAtIndex: 0];

        dreamcast_load_state( [filename UTF8String] );

    }

}

- (void) save_action: (id)sender

{

    NSSavePanel *panel = [NSSavePanel savePanel];

    const gchar *dir = lxdream_get_config_value(CONFIG_SAVE_PATH);

    NSString *path = (dir == NULL ? NSHomeDirectory() : [NSString stringWithCString: dir]);

    [panel setRequiredFileType: @"dst"];

    int result = [panel runModalForDirectory: path file:@""];

    if( result == NSOKButton ) {

        NSString *filename = [panel filename];

        dreamcast_save_state( [filename UTF8String] );

    }

}

- (void) load_binary_action: (id)sender

{

    NSOpenPanel *panel = [NSOpenPanel openPanel];

    const gchar *dir = lxdream_get_config_value(CONFIG_DEFAULT_PATH);

    NSString *path = (dir == NULL ? NSHomeDirectory() : [NSString stringWithCString: dir]);

    int result = [panel runModalForDirectory: path file: nil types: nil];

    if( result == NSOKButton && [[panel filenames] count] > 0 ) {

        NSString *filename = [[panel filenames] objectAtIndex: 0];

        file_load_magic( [filename UTF8String] );

    }

}

- (void) mount_action: (id)sender

{

    NSOpenPanel *panel = [NSOpenPanel openPanel];

    const gchar *dir = lxdream_get_config_value(CONFIG_DEFAULT_PATH);

    NSString *path = (dir == NULL ? NSHomeDirectory() : [NSString stringWithCString: dir]);

    int result = [panel runModalForDirectory: path file: nil types: nil];

    if( result == NSOKButton && [[panel filenames] count] > 0 ) {

        NSString *filename = [[panel filenames] objectAtIndex: 0];

        gdrom_mount_image( [filename UTF8String] );

    }

}

- (void) pause_action: (id)sender

{

    dreamcast_stop();

}

- (void) reset_action: (id)sender

{

    dreamcast_reset();

}

- (void) run_action: (id)sender

{

    if( !dreamcast_is_running() ) {

        gui_run_later();

    }

}

- (void) run_immediate

{

    dreamcast_run();

    [mainWindow setRunning: NO];

}

- (void) gdrom_list_action: (id)sender

{

    gdrom_list_set_selection( [sender tag] );

}

@end

gboolean gui_parse_cmdline( int *argc, char **argv[] )

{

    /* If started from the finder, the first (and only) arg will look something like 

     * -psn_0_... - we want to remove this so that lxdream doesn't try to process it 

     * normally

     */

    if( *argc == 2 && strncmp((*argv)[1], "-psn_", 5) == 0 ) {

        *argc = 1;

    }

    return TRUE;

}

gboolean gui_init( gboolean withDebug, gboolean withFullscreen )

{

    dreamcast_register_module( &cocoa_gui_module );

    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

    [NSApplication sharedApplication];

    LxdreamDelegate *delegate = [[LxdreamDelegate alloc] init];

    [NSApp setDelegate: delegate];

    NSString *iconFile = [[NSBundle mainBundle] pathForResource:@"lxdream" ofType:@"png"];

    NSImage *iconImage = [[NSImage alloc] initWithContentsOfFile: iconFile];

    [iconImage setName: @"NSApplicationIcon"];

    [NSApp setApplicationIconImage: iconImage];   

    cocoa_gui_create_menu();

    mainWindow = cocoa_gui_create_main_window();

    [mainWindow makeKeyAndOrderFront: nil];

    [NSApp activateIgnoringOtherApps: YES];   

    register_gdrom_disc_change_hook( cocoa_gui_disc_changed, mainWindow );

    [pool release];

    return TRUE;

}

void gui_main_loop( gboolean run )

{

    if( run ) {

        cocoa_gui_autorun = YES;

    }

    cocoa_gui_is_running = YES;

    [NSApp run];

    cocoa_gui_is_running = NO;

}

void gui_update_state(void)

{

    cocoa_gui_update();

}

void gui_set_use_grab( gboolean grab )

{

    [mainWindow setUseGrab: (grab ? YES : NO)];

}

gboolean gui_error_dialog( const char *msg, ... )

{

    if( cocoa_gui_is_running ) {

        NSString *error_string;

        va_list args;

        va_start(args, msg);

        error_string = [[NSString alloc] initWithFormat: [NSString stringWithCString: msg] arguments: args];

        NSRunAlertPanel(NS_("Error in Lxdream"), error_string, nil, nil, nil);

        va_end(args);

        return TRUE;

    } else {

        return FALSE;

    }

}

void gui_update_io_activity( io_activity_type io, gboolean active )

{

}

uint32_t cocoa_gui_run_slice( uint32_t nanosecs )

{

    NSEvent *event;

    NSAutoreleasePool *pool;

    cocoa_gui_nanos += nanosecs;

    if( cocoa_gui_nanos > GUI_TICK_PERIOD ) { /* 10 ms */

        cocoa_gui_nanos -= GUI_TICK_PERIOD;

        cocoa_gui_ticks ++;

        uint32_t current_period = cocoa_gui_ticks * GUI_TICK_PERIOD;

        // Run the event loop

        pool = [NSAutoreleasePool new];

        while( (event = [NSApp nextEventMatchingMask: NSAnyEventMask untilDate: nil 

                         inMode: NSDefaultRunLoopMode dequeue: YES]) != nil ) {

            [NSApp sendEvent: event];

        }

        [pool release];

        struct timeval tv;

        gettimeofday(&tv,NULL);

        uint32_t ns = ((tv.tv_sec - cocoa_gui_lasttv.tv_sec) * 1000000000) + 

        (tv.tv_usec - cocoa_gui_lasttv.tv_usec)*1000;

        if( (ns * 1.05) < current_period ) {

            // We've gotten ahead - sleep for a little bit

            struct timespec tv;

            tv.tv_sec = 0;

            tv.tv_nsec = current_period - ns;

            nanosleep(&tv, &tv);

        }

        /* Update the display every 10 ticks (ie 10 times a second) and 

         * save the current tv value */

        if( cocoa_gui_ticks > 10 ) {

            gchar buf[32];

            cocoa_gui_ticks -= 10;

            double speed = (float)( (double)current_period * 100.0 / ns );

            cocoa_gui_lasttv.tv_sec = tv.tv_sec;

            cocoa_gui_lasttv.tv_usec = tv.tv_usec;

            snprintf( buf, 32, _("Running (%2.4f%%)"), speed );

            [mainWindow setStatusText: buf];

        }

    }

    return nanosecs;

}

void cocoa_gui_update( void )

{

}

void cocoa_gui_start( void )

{

    [mainWindow setRunning: YES];

    cocoa_gui_nanos = 0;

    gettimeofday(&cocoa_gui_lasttv,NULL);

}

void cocoa_gui_stop( void )

{

    [mainWindow setRunning: NO];

}

/**

 * Queue a dreamcast_run() to execute after the currently event(s)

 */

void gui_run_later( void )

{

    [[NSRunLoop currentRunLoop] performSelector: @selector(run_immediate) 

     target: [NSApp delegate] argument: nil order: 1 

     modes: [NSArray arrayWithObject: NSDefaultRunLoopMode] ];

}

/*************************** Convenience methods ***************************/

NSImage *NSImage_new_from_framebuffer( frame_buffer_t buffer )

{

    NSBitmapImageRep *rep = 

        [[NSBitmapImageRep alloc] initWithBitmapDataPlanes: &buffer->data

         pixelsWide: buffer->width  pixelsHigh: buffer->height

         bitsPerSample: 8 samplesPerPixel: 3

         hasAlpha: NO isPlanar: NO

         colorSpaceName: NSDeviceRGBColorSpace  bitmapFormat: 0

         bytesPerRow: buffer->rowstride  bitsPerPixel: 24];

    NSImage *image = [[NSImage alloc] initWithSize: NSMakeSize(0.0,0.0)];

    [image addRepresentation: rep];

    return image;

}

NSTextField *cocoa_gui_add_label( NSView *parent, NSString *text, NSRect frame )

{

    NSTextField *label = [[NSTextField alloc] initWithFrame: frame];

    [label setStringValue: text];

    [label setBordered: NO];

    [label setDrawsBackground: NO];

    [label setEditable: NO];

    [label setAutoresizingMask: (NSViewMinYMargin|NSViewMaxXMargin)];

    if( parent != NULL ) {

        [parent addSubview: label];

    }

    return label;

}