// Copyright GreenKeeper Software 2005

#import "ProjectManagerController.h"
#import "BOINCController.h"
#import "ClientState.h"

// Handles the project manager
@implementation ProjectManagerController

- (void)awakeFromNib {
	
	// Grab all attached projects from the client state file
	projects = [[[ClientState clientState] projects] retain];
	
	// Listens to see if the selection in the table changes
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateButtons:)
												 name:NSTableViewSelectionDidChangeNotification object:nil];
												 
	// Listens to see if client state changed and makes appropriate updates
	[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(updateInterface:)
												 name:@"clientStateChanged" object:nil];
		
	// When a cell in the table is double clicked, 
	[table setTarget:self];
	[table setDoubleAction:@selector(goToProjectWebsite)];
	
	
	lastRequestedAction = nil;
}

- (void)dealloc {
	
	// Local releases
	[projects release];
	
	// Remove all listeners
	[[NSNotificationCenter defaultCenter] removeObserver:self];
	
	[super dealloc];
}

// Opens the project manager window
- (IBAction)openWindow:(id)sender {
	
	// Update the list of projects
	[projects release];
	projects = [[[ClientState clientState] projects] retain];
	[table reloadData];
	
	// Makes sure windows appear at the front
	[NSApp activateIgnoringOtherApps:YES];
	
	// Set the interface such that no item is selected
	[table deselectRow:[table selectedRow]];
	
	// Opens the window
	[window makeKeyAndOrderFront:self];
}

// Attaches the add project sheet to the project manager so the user can add a new project
- (IBAction)openAddProjectSheet:(id)sender {
	[NSApp beginSheet:addProjectWindow modalForWindow:window
		modalDelegate:nil didEndSelector:nil contextInfo:nil];
	[NSApp runModalForWindow:addProjectWindow];
	[addProjectWindow close];
	[NSApp endSheet:addProjectWindow];		
}

// Attaches a project to this computer
- (IBAction)addProject:(id)sender {
	
	// Remove the add project sheet
	[NSApp stopModal];
		
	[BOINCController attachProjectWithURL:[addProjectURLField stringValue]
								accountID:[addProjectAccountIDField stringValue]];
								
	lastRequestedAction = @"add";
}

// Closes the add project sheet
- (IBAction)cancelAddProject:(id)sender {
	[NSApp stopModal];
}

// Updates the selected project in the project manager
- (IBAction)updateProject:(id)sender {
		
	// Grab index of selected row
	int rowIndex = [table selectedRow];
	
	// Grab url of selected project
	NSString *url = [[projects objectAtIndex:1] objectAtIndex:rowIndex];

	[BOINCController updateProjectWithURL:url];
	
	lastRequestedAction = @"update";
}

// Resets the selected project in the project manager
- (IBAction)resetProject:(id)sender {
	
	// Double checks to make sure the user does want to remove the project
	NSString *message = @"You are about to reset a project!";
	NSString *informativeText = @"Resetting a project will cause all its current data to be deleted. Are you sure you would like to reset the selected project?";
	int choice = NSRunAlertPanel(message, informativeText, @"Okay", @"Cancel", nil);
	if (choice != NSAlertDefaultReturn) return;
	
	// Grab index of selected row
	int rowIndex = [table selectedRow];
	
	// Grab url of selected project
	NSString *url = [[projects objectAtIndex:1] objectAtIndex:rowIndex];

	[BOINCController resetProjectWithURL:url];
	
	lastRequestedAction = @"reset";
}

// Detaches the selected project in the project manager
- (IBAction)removeProject:(id)sender {
	
	// Double checks to make sure the user does want to remove the project
	NSString *message = @"You are about to remove a project!";
	NSString *informativeText = @"Are you sure you would like to permanently remove the selected project?";
	int choice = NSRunAlertPanel(message, informativeText, @"Okay", @"Cancel", nil);
	if (choice != NSAlertDefaultReturn) return;

	// Grab index of selected row
	int rowIndex = [table selectedRow];
	
	// Grab url of selected project
	NSString *url = [[projects objectAtIndex:1] objectAtIndex:rowIndex];

	[BOINCController removeProjectWithURL:url];
	
	lastRequestedAction = @"remove";
}

// Called when user double clicks on a project in the table; opens that projects website
- (void)goToProjectWebsite {
	int rowIndex = [table selectedRow];
	if(rowIndex != -1)
		[[NSWorkspace sharedWorkspace] openURL:[NSURL URLWithString: [[projects objectAtIndex:1 ] objectAtIndex:rowIndex]]];
}

// Updates whether or not buttons are enabled when table selection changes
// Add button is always enabled
- (void)updateButtons:(NSNotification *)notification {
	if([table selectedRow] == -1) {
		[removeButton setEnabled:NO];
		[updateButton setEnabled:NO];
		[resetButton setEnabled:NO];
		[addButton setEnabled:YES];
	}
	else {
		[removeButton setEnabled:YES];
		[updateButton setEnabled:YES];
		[resetButton setEnabled:YES];
		[addButton setEnabled:YES];
	}
}

- (void)updateInterface:(NSNotification *)notification {
	
	int oldProjectCount = [[projects objectAtIndex:0] count];
	[projects release];
	projects = [[[ClientState clientState] projects] retain];
	[table reloadData];
	int newProjectCount = [[projects objectAtIndex:0] count];
	
	// Project disappeared without user requesting it ---> means adding project was unsuccessful
	if(![lastRequestedAction isEqualToString:@"remove"] && newProjectCount < oldProjectCount) {
	
		[NSApp activateIgnoringOtherApps:YES];
		
		NSRunAlertPanel(@"Adding project was not successful!", @"Please check the URL and your Account ID and try again.", @"Okay", nil, nil);
		
		[window makeKeyAndOrderFront:self];
		[self openAddProjectSheet:self];
	}

	else if([lastRequestedAction isEqualToString:@"add"]) {		
		[addProjectAccountIDField setStringValue:@""];
		[addProjectURLField setStringValue:@""];
		[[NSApp keyWindow] makeFirstResponder:addProjectURLField];
	}
}

// Method called by NSTableViews when instructed to reload data
- (int)numberOfRowsInTableView:(NSTableView *)aTableView {
	if([projects count])
		return [[projects objectAtIndex:0] count];
	   
	else return 0;
}

// Method called by NSTableViews when instructed to reload data
- (id)tableView:(NSTableView *)aTableView objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(int)rowIndex {
	
	if(aTableColumn == nameColumn) {
		return [[projects objectAtIndex:0] objectAtIndex:rowIndex];
	}
	
	if(aTableColumn == urlColumn) {
		return [[projects objectAtIndex:1] objectAtIndex:rowIndex];
	}
}

@end