/*

 * Hedgewars-iOS, a Hedgewars port for iOS devices

 * Copyright (c) 2009-2010 Vittorio Giovara <vittorio.giovara@gmail.com>

 *

 * 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; version 2 of the License

 *

 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

 *

 * File created on 22/04/2010.

 */

#import "MapConfigViewController.h"

#import "PascalImports.h"

#import "CommodityFunctions.h"

#import "UIImageExtra.h"

#define scIndex         self.segmentedControl.selectedSegmentIndex

#define isRandomness()  (segmentedControl.selectedSegmentIndex == 0 || segmentedControl.selectedSegmentIndex == 2)

@implementation MapConfigViewController

@synthesize previewButton, maxHogs, seedCommand, templateFilterCommand, mapGenCommand, mazeSizeCommand, themeCommand, staticMapCommand,

            missionCommand, tableView, maxLabel, sizeLabel, segmentedControl, slider, lastIndexPath, dataSourceArray, busy, delegate;

-(BOOL) shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

    return rotationManager(interfaceOrientation);

}

-(IBAction) mapButtonPressed {

    playSound(@"clickSound");

    [self updatePreview];

}

-(void) updatePreview {

    // don't generate a new preview while it's already generating one

    if (busy)

        return;

    // generate a seed

    CFUUIDRef uuid = CFUUIDCreate(kCFAllocatorDefault);

    NSString *seed = (NSString *)CFUUIDCreateString(kCFAllocatorDefault, uuid);

    CFRelease(uuid);

    NSString *seedCmd = [[NSString alloc] initWithFormat:@"eseed {%@}", seed];

    self.seedCommand = seedCmd;

    [seedCmd release];

    NSArray *source = [self.dataSourceArray objectAtIndex:scIndex];

    NSIndexPath *theIndex;

    if (isRandomness()) {

        // prevent other events and add an activity while the preview is beign generated

        [self turnOffWidgets];

        [self.previewButton updatePreviewWithSeed:seed];

        theIndex = [NSIndexPath indexPathForRow:(random()%[source count]) inSection:0];

    } else {

        theIndex = [NSIndexPath indexPathForRow:(random()%[source count]) inSection:0];

        // the preview for static maps is loaded in didSelectRowAtIndexPath

    }

    [seed release];

    // perform as if user clicked on an entry

    [self tableView:self.tableView didSelectRowAtIndexPath:theIndex];

    [self.tableView scrollToRowAtIndexPath:theIndex atScrollPosition:UITableViewScrollPositionNone animated:YES];

}

-(void) turnOffWidgets {

    busy = YES;

    self.previewButton.alpha = 0.5f;

    self.previewButton.enabled = NO;

    self.maxLabel.text = @"...";

    self.segmentedControl.enabled = NO;

    self.slider.enabled = NO;

}

-(void) turnOnWidgets {

    self.previewButton.alpha = 1.0f;

    self.previewButton.enabled = YES;

    self.segmentedControl.enabled = YES;

    self.slider.enabled = YES;

    busy = NO;

}

-(void) setLabelText:(NSString *)str {

    self.maxHogs = [str intValue];

    self.maxLabel.text = str;

}

-(NSDictionary *)getDataForEngine {

    NSDictionary *dictForEngine = [NSDictionary dictionaryWithObjectsAndKeys:

                                   self.seedCommand,@"seedCommand",

                                   self.templateFilterCommand,@"templateFilterCommand",

                                   self.mapGenCommand,@"mapGenCommand",

                                   self.mazeSizeCommand,@"mazeSizeCommand",

                                   nil];

    return dictForEngine;

}

#pragma mark -

#pragma mark Table view data source

-(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView {

    return 1;

}

-(NSInteger) tableView:(UITableView *)aTableView numberOfRowsInSection:(NSInteger) section {

    return [[self.dataSourceArray objectAtIndex:scIndex] count];

}

-(UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    NSInteger row = [indexPath row];

    UITableViewCell *cell = [aTableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil)

        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

        cell.textLabel.textColor = UICOLOR_HW_YELLOW_TEXT;

    NSArray *source = [self.dataSourceArray objectAtIndex:scIndex];

    NSString *labelString = [source objectAtIndex:row];

    cell.textLabel.text = labelString;

    if (isRandomness()) {

        UIImage *image = [[UIImage alloc] initWithContentsOfFile:[NSString stringWithFormat:@"%@/%@/icon.png",THEMES_DIRECTORY(),labelString]];

        cell.imageView.image = image;

        [image release];

    } else

        cell.imageView.image = nil;

    if (row == [self.lastIndexPath row]) {

        UIImageView *checkbox = [[UIImageView alloc] initWithImage:[UIImage imageWithContentsOfFile:@"checkbox.png"]];

        cell.accessoryView = checkbox;

        [checkbox release];

    } else

        cell.accessoryView = nil;

    cell.backgroundColor = [UIColor blackColor];

    return cell;

}

// this set details for a static map (called by didSelectRowAtIndexPath)

-(void) setDetailsForStaticMap:(NSInteger) index {

    NSArray *source = [self.dataSourceArray objectAtIndex:scIndex];

    NSString *fileCfg = [[NSString alloc] initWithFormat:@"%@/%@/map.cfg", 

                         (scIndex == 1) ? MAPS_DIRECTORY() : MISSIONS_DIRECTORY(),[source objectAtIndex:index]];

    NSString *contents = [[NSString alloc] initWithContentsOfFile:fileCfg encoding:NSUTF8StringEncoding error:NULL];

    [fileCfg release];

    NSArray *split = [contents componentsSeparatedByString:@"\n"];

    [contents release];

    // if the number is not set we keep 18 standard;

    // sometimes it's not set but there are trailing characters, we get around them with the second equation

    if ([split count] > 1 && [[split objectAtIndex:1] intValue] > 0)

        maxHogs = [[split objectAtIndex:1] intValue];

    else

        maxHogs = 18;

    NSString *max = [[NSString alloc] initWithFormat:@"%d",maxHogs];

    self.maxLabel.text = max;

    [max release];

    self.themeCommand = [NSString stringWithFormat:@"etheme %@", [split objectAtIndex:0]];

    self.staticMapCommand = [NSString stringWithFormat:@"emap %@", [source objectAtIndex:index]];

    if (scIndex != 3)

        self.missionCommand = @"";

    else

        self.missionCommand = [NSString stringWithFormat:@"escript Missions/Maps/%@/map.lua",[source objectAtIndex:index]];

}

#pragma mark -

#pragma mark Table view delegate

-(void) tableView:(UITableView *)aTableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    int newRow = [indexPath row];

    int oldRow = (lastIndexPath != nil) ? [lastIndexPath row] : -1;

    if (newRow != oldRow) {

        NSArray *source = [self.dataSourceArray objectAtIndex:scIndex];

        if (isRandomness()) {

            // just change the theme, don't update preview

            self.themeCommand = [NSString stringWithFormat:@"etheme %@", [source objectAtIndex:newRow]];

        } else {

            NSString *fileImage = [NSString stringWithFormat:@"%@/%@/preview.png",

                                   (scIndex == 1) ? MAPS_DIRECTORY() : MISSIONS_DIRECTORY(),[source objectAtIndex:newRow]];

            [self.previewButton updatePreviewWithFile:fileImage];

            [self setDetailsForStaticMap:newRow];

        }

        UITableViewCell *newCell = [aTableView cellForRowAtIndexPath:indexPath];

        UIImageView *checkbox = [[UIImageView alloc] initWithImage:[UIImage imageWithContentsOfFile:@"checkbox.png"]];

        newCell.accessoryView = checkbox;

        [checkbox release];

        UITableViewCell *oldCell = [aTableView cellForRowAtIndexPath:self.lastIndexPath];

        oldCell.accessoryView = nil;

        self.lastIndexPath = indexPath;

        [aTableView selectRowAtIndexPath:indexPath animated:YES scrollPosition:UITableViewScrollPositionNone];

    }

    [aTableView deselectRowAtIndexPath:indexPath animated:YES];

}

#pragma mark -

#pragma mark slider & segmentedControl

// this updates the label and the command keys when the slider is moved, depending of the selection in segmentedControl

// no methods are called by this routine and you can pass nil to it

-(IBAction) sliderChanged:(id) sender {

    NSString *labelText;

    NSString *templateCommand;

    NSString *mazeCommand;

    switch ((int)(self.slider.value*100)) {

        case 0:

            if (self.segmentedControl.selectedSegmentIndex == 0) {

                labelText = NSLocalizedString(@"Wacky",@"");

            } else {

                labelText = NSLocalizedString(@"Large Floating Islands",@"");

            }

            templateCommand = @"e$template_filter 5";

            mazeCommand = @"e$maze_size 5";

            break;

        case 1:

            if (self.segmentedControl.selectedSegmentIndex == 0) {

                labelText = NSLocalizedString(@"Cavern",@"");

            } else {

                labelText = NSLocalizedString(@"Medium Floating Islands",@"");

            }

            templateCommand = @"e$template_filter 4";

            mazeCommand = @"e$maze_size 4";

            break;

        case 2:

            if (self.segmentedControl.selectedSegmentIndex == 0) {

                labelText = NSLocalizedString(@"Small",@"");

            } else {

                labelText = NSLocalizedString(@"Small Floating Islands",@"");

            }

            templateCommand = @"e$template_filter 1";

            mazeCommand = @"e$maze_size 3";

            break;

        case 3:

            if (self.segmentedControl.selectedSegmentIndex == 0) {

                labelText = NSLocalizedString(@"Medium",@"");

            } else {

                labelText = NSLocalizedString(@"Large Tunnels",@"");

            }

            templateCommand = @"e$template_filter 2";

            mazeCommand = @"e$maze_size 2";

            break;

        case 4:

            if (self.segmentedControl.selectedSegmentIndex == 0) {

                labelText = NSLocalizedString(@"Large",@"");

            } else {

                labelText = NSLocalizedString(@"Medium Tunnels",@"");

            }

            templateCommand = @"e$template_filter 3";

            mazeCommand = @"e$maze_size 1";

            break;

        case 5:

            if (self.segmentedControl.selectedSegmentIndex == 0) {

                labelText = NSLocalizedString(@"All",@"");

            } else {

                labelText = NSLocalizedString(@"Small Tunnels",@"");

            }

            templateCommand = @"e$template_filter 0";

            mazeCommand = @"e$maze_size 0";

            break;

        default:

            labelText = nil;

            templateCommand = nil;

            mazeCommand = nil;

            break;

    }

    self.sizeLabel.text = labelText;

    self.templateFilterCommand = templateCommand;

    self.mazeSizeCommand = mazeCommand;

}

// update preview (if not busy and if its value really changed) as soon as the user lifts its finger up

-(IBAction) sliderEndedChanging:(id) sender {

    int num = (int) (self.slider.value * 100);

    if (oldValue != num) {

        [self updatePreview];

        oldValue = num;

    }

    playSound(@"clickSound");

}

// perform actions based on the activated section, then call updatePreview to visually update the selection

// and if necessary update the table with a slide animation

-(IBAction) segmentedControlChanged:(id) sender {

    NSString *mapgen, *staticmap, *mission;

    NSInteger newPage = self.segmentedControl.selectedSegmentIndex;

    playSound(@"selSound");

    switch (newPage) {

        case 0: // Random

            mapgen = @"e$mapgen 0";

            staticmap = @"";

            mission = @"";

            [self sliderChanged:nil];

            self.slider.enabled = YES;

            break;

        case 1: // Map

        case 3: // Mission

            mapgen = @"e$mapgen 0";

            // dummy values, these are set by -updatePreview -> -didSelectRowAtIndexPath -> -setDetailsForStaticMap

            staticmap = @"map Bamboo";

            mission = @"";

            self.slider.enabled = NO;

            self.sizeLabel.text = NSLocalizedString(@"No filter",@"");

            break;

        case 2: // Maze

            mapgen = @"e$mapgen 1";

            staticmap = @"";

            mission = @"";

            [self sliderChanged:nil];

            self.slider.enabled = YES;

            break;

        default:

            mapgen = nil;

            staticmap = nil;

            mission = nil;

            break;

    }

    self.mapGenCommand = mapgen;

    self.staticMapCommand = staticmap;

    self.missionCommand = mission;

    // nice animation for updating the table when appropriate (on iphone)

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)

        if (((oldPage == 0 || oldPage == 2) && (newPage == 1 || newPage == 3)) ||

            ((oldPage == 1 || oldPage == 3) && (newPage == 0 || newPage == 2)) ||

            ((oldPage == 1 && newPage == 3) || (oldPage == 3 || newPage == 1))) {

            self.tableView.frame = CGRectMake(480, 0, 185, 276);

            [UIView beginAnimations:@"moving in table" context:NULL];

            self.tableView.frame = CGRectMake(295, 0, 185, 276);

            [UIView commitAnimations];

        }

    [self.tableView reloadData];

    [self updatePreview];

    oldPage = newPage;

}

#pragma mark -

#pragma mark delegate functions for iPad

-(IBAction) buttonPressed:(id) sender {

    if (self.delegate != nil && [delegate respondsToSelector:@selector(buttonPressed:)])

        [self.delegate buttonPressed:(UIButton *)sender];

}

-(void) loadDataSourceArray {

    // themes.cfg contains all the user-selectable themes

    NSString *string = [[NSString alloc] initWithContentsOfFile:[THEMES_DIRECTORY() stringByAppendingString:@"/themes.cfg"]

                                                       encoding:NSUTF8StringEncoding

                                                          error:NULL];

    NSMutableArray *themeArray = [[NSMutableArray alloc] initWithArray:[string componentsSeparatedByString:@"\n"]];

    [string release];

    // remove a trailing "" element

    [themeArray removeLastObject];

    NSArray *mapArray = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:MAPS_DIRECTORY() error:NULL];

    NSArray *missionArray = [[NSFileManager defaultManager] contentsOfDirectoryAtPath:MISSIONS_DIRECTORY() error:NULL];

    NSArray *array = [[NSArray alloc] initWithObjects:themeArray,mapArray,themeArray,missionArray,nil];

    self.dataSourceArray = array;

    [array release];

    [themeArray release];

}

#pragma mark -

#pragma mark view management

-(void) viewDidLoad {

    [super viewDidLoad];

    srandom(time(NULL));

    CGSize screenSize = [[UIScreen mainScreen] bounds].size;

    self.view.frame = CGRectMake(0, 0, screenSize.height, screenSize.width - 44);

    // initialize some "default" values

    self.sizeLabel.text = NSLocalizedString(@"All",@"");

    self.slider.value = 0.05f;

    oldValue = 5;

    busy = NO;

    [self loadDataSourceArray];

    self.lastIndexPath = [NSIndexPath indexPathForRow:-1 inSection:0];

    // select a map at first because it's faster - done in IB

    oldPage = 1;

    if (self.segmentedControl.selectedSegmentIndex == 1) {

        self.slider.enabled = NO;

        self.sizeLabel.text = NSLocalizedString(@"No filter",@"");

    }

    self.templateFilterCommand = @"e$template_filter 0";

    self.mazeSizeCommand = @"e$maze_size 0";

    self.mapGenCommand = @"e$mapgen 0";

    self.staticMapCommand = @"";

    self.missionCommand = @"";

    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) {

        [self.tableView setBackgroundView:nil];

        self.view.backgroundColor = [UIColor clearColor];

        self.tableView.separatorColor = UICOLOR_HW_YELLOW_BODER;

        self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;

        self.tableView.rowHeight = 45;

    }

}

-(void) viewWillAppear:(BOOL)animated {

    if (self.dataSourceArray == nil)

        [self loadDataSourceArray];

    [super viewWillAppear:animated];

}

-(void) viewDidAppear:(BOOL) animated {

    [self updatePreview];

    [super viewDidAppear:animated];

}

-(void) viewDidUnload {

    self.delegate = nil;

    self.previewButton = nil;

    self.seedCommand = nil;

    self.templateFilterCommand = nil;

    self.mapGenCommand = nil;

    self.mazeSizeCommand = nil;

    self.themeCommand = nil;

    self.staticMapCommand = nil;

    self.missionCommand = nil;

    self.previewButton = nil;

    self.tableView = nil;

    self.maxLabel = nil;

    self.sizeLabel = nil;

    self.segmentedControl = nil;

    self.slider = nil;

    self.lastIndexPath = nil;

    self.dataSourceArray = nil;

    MSG_DIDUNLOAD();

    [super viewDidUnload];

}

-(void) didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    self.dataSourceArray = nil;

    // maybe we can save some more

    MSG_MEMCLEAN();

}

-(void) dealloc {

    self.delegate = nil;

    [seedCommand release];

    [templateFilterCommand release];

    [mapGenCommand release];

    [mazeSizeCommand release];