//
//  WorkspacePanelController.m
//  Perforce
//
//  Created by Adam Czubernat on 28.05.2013.
//  Copyright (c) 2013 Perforce Software, Inc. All rights reserved.
//

#import "WorkspacePanelController.h"
#import "P4Workspace.h"
#import "P4Defaults.h"
#import "P4WorkspaceDefaults.h"

@interface WorkspacePanelController () {
	NSArray *workspaces;
	NSDictionary *selectedWorkspace;
	
	NSString *workspaceName;
	NSString *workspaceRoot;
	
	__weak IBOutlet NSView *selectionView;
	__weak IBOutlet NSView *creationView;

	// Workspace selection
	__weak IBOutlet NSPopUpButton *workspacePopUpButton;
	__weak IBOutlet NSButton *selectButton;
	
	__weak IBOutlet NSProgressIndicator *indicator;
	
	__weak IBOutlet NSTextField *statusLabel;

	__weak IBOutlet NSView *detailsView;
	__weak IBOutlet NSTextField *rootLabel;
	__weak IBOutlet NSTextField *depotLabel;
	__weak IBOutlet NSTextField *descriptionLabel;
	
	// Workspace creation
	__weak IBOutlet NSTextField *workspaceNameTextField;
	__weak IBOutlet NSTextField *workspaceRootTextField;
	__weak IBOutlet NSButton *createWorkspaceButton;
	
}
- (void)setWorkspace:(NSString *)workspace;
- (void)showError:(NSError *)error;
- (void)loadWorkspaces:(NSArray *)aWorkspaces;
- (IBAction)workspacePopUpChanged:(id)sender;
- (IBAction)cancelSelectionPressed:(id)sender;
- (IBAction)cancelCreationPressed:(id)sender;
- (IBAction)selectPressed:(id)sender;
- (IBAction)newWorkspacePressed:(id)sender;
- (IBAction)browsePressed:(id)sender;
- (IBAction)createPressed:(id)sender;
@end

@implementation WorkspacePanelController
@synthesize delegate;

- (void)windowDidLoad {
	[super windowDidLoad];	
	
	[workspacePopUpButton setAutoenablesItems:NO];
	[workspacePopUpButton removeAllItems];
	
	[detailsView setHidden:YES];
	[selectButton setEnabled:NO];
	rootLabel.stringValue =
	depotLabel.stringValue =
	descriptionLabel.stringValue = @"-";
	
	[self setPresentedView:selectionView];
	[indicator startAnimation:nil];

	// List workspaces	
	P4Workspace *workspace = [P4Workspace sharedInstance];
	[workspace listWorkspaces:^(P4Operation *operation, NSArray *response) {
		
		[indicator stopAnimation:nil];
		statusLabel.stringValue = @"Select workspace:";
		
		if (operation.errors) {
			[self showError:operation.error];
			return;
		}
		
		[self loadWorkspaces:response];
		
		[detailsView setHidden:NO];
		[detailsView setAlphaValue:0.0f];
		[NSView animateWithDuration:0.25f animations:^{
			[detailsView.animator setAlphaValue:1.0f];
		}];
	}];
}

#pragma mark - Public

#pragma mark - Private

- (void)setWorkspace:(NSString *)workspace {
	 // Save last workspace details
	 [P4WorkspaceDefaults setWorkspace:workspace];
}

- (void)showError:(NSError *)error {
	[[NSAlert alertWithError:error]
	 beginSheetModalForWindow:self.window
	 modalDelegate:nil
	 didEndSelector:nil
	 contextInfo:NULL];
}

- (void)loadWorkspaces:(NSArray *)response {

	workspaces = response;
	
	if (!workspaces.count)
		return;

	// Check workspaces existence on local filesystem

	NSString *lastWorkspace = [P4Defaults sharedInstance].workspace;
	NSMenuItem *selectedItem = nil;
	
	for (NSDictionary *dictionary in workspaces) {
		
		NSString *path = [dictionary objectForKey:@"Root"];
		NSString *name = [dictionary objectForKey:@"client"];
		
		BOOL isDirectory = NO;
		
		if ([[NSFileManager defaultManager]
			 fileExistsAtPath:path
			 isDirectory:&isDirectory] && isDirectory) {

			// Workspace folder exists, add as valid workspace
			[workspacePopUpButton addItemWithTitle:name];
			NSMenuItem *item = [workspacePopUpButton lastItem];
			[item setEnabled:YES];

			// Store first avaialble item or last used
			if (!selectedItem || [name isEqualToString:lastWorkspace])
				selectedItem = item;
			
		} else {
			
			[workspacePopUpButton addItemWithTitle:
			 [NSString stringWithFormat:@"%@ (unavailable)", name]];
			NSMenuItem *item = [workspacePopUpButton lastItem];
			[item setEnabled:NO];
		}
	}

	// Auto-select available item
	if (selectedItem) {
		[workspacePopUpButton selectItem:selectedItem];
		[selectButton setEnabled:YES];
	}
	
	[self workspacePopUpChanged:workspacePopUpButton];	
}

#pragma mark - Textfield delegate

- (void)controlTextDidChange:(NSNotification *)notification {
	workspaceRoot = workspaceRootTextField.stringValue;
	workspaceName = workspaceNameTextField.stringValue;
	
	BOOL directory;
	if ([[NSFileManager defaultManager]
		 fileExistsAtPath:workspaceRoot
		 isDirectory:&directory] && directory && workspaceName.length > 3) {
		
		[createWorkspaceButton setEnabled:YES];
		
	} else {
		
		[createWorkspaceButton setEnabled:NO];
	}
}

#pragma mark - Actions

- (IBAction)workspacePopUpChanged:(NSPopUpButton *)sender {
	NSUInteger index = [sender indexOfSelectedItem];
	selectedWorkspace = [workspaces objectAtIndex:index];
	rootLabel.stringValue = [selectedWorkspace objectForKey:@"Root"] ? : @"";
	depotLabel.stringValue = [selectedWorkspace objectForKey:@"Stream"] ? : @"";
	descriptionLabel.stringValue = [selectedWorkspace objectForKey:@"Description"] ? : @"";
}

- (IBAction)cancelSelectionPressed:(id)sender {
	[self dismiss];
	if ([delegate respondsToSelector:@selector(workspacePanelDidCancel)])
		[delegate workspacePanelDidCancel];
}

- (IBAction)cancelCreationPressed:(id)sender {
	[self setPresentedView:selectionView animated:YES];
}


- (IBAction)selectPressed:(NSButton *)sender {
	NSString *workspace = [selectedWorkspace valueForKey:@"client"];
	if (!workspace)
		return;
	
	[[P4Workspace sharedInstance]
	 setWorkspace:workspace
	 response:^(P4Operation *operation, NSArray *response) {
		 if (operation.errors) {
			 [self showError:operation.error];
			 return;
		 }
		 
		 PSLogStore(@"Workspace info", @"%@", response);
		 [self setWorkspace:workspace];
		 [self dismiss];
		 
		 if ([delegate respondsToSelector:@selector(workspacePanelDidSelectWorkspace:)])
			 [delegate workspacePanelDidSelectWorkspace:workspace];
	 }];
}

- (void)newWorkspacePressed:(id)sender {
	[self setPresentedView:creationView animated:YES];
	[self.window makeFirstResponder:workspaceNameTextField];
}

- (void)browsePressed:(id)sender {
	NSOpenPanel *openPanel = [NSOpenPanel openPanel];
	
    [openPanel setCanChooseFiles:NO];
    [openPanel setCanChooseDirectories:YES];
	[openPanel setAllowsMultipleSelection:NO];
	[openPanel setCanCreateDirectories:YES];
	[openPanel setPrompt:@"Select"];

	NSURL *directory = [NSURL fileURLWithPath:workspaceRoot ?: NSHomeDirectory() isDirectory:YES];
	[openPanel setDirectoryURL:directory];
	
	[openPanel beginSheetModalForWindow:self.window completionHandler:^(NSInteger result) {
		if (result != NSOKButton)
			return;
		NSURL *parentURL = openPanel.directoryURL;
		NSURL *selectedURL = [openPanel.URLs lastObject];

		// Ask if create workspace directory if nothing selected
		if ([parentURL isEqual:selectedURL] && workspaceName.length) {
			if ([[NSAlert
				  alertWithMessageText:@"Create directory"
				  defaultButton:@"Yes"
				  alternateButton:@"No"
				  otherButton:nil
				  informativeTextWithFormat:@"Do you want to create workspace directory \"%@\"\n"
				  "inside %@ directory?", workspaceName, workspaceRoot]
				 runModal] == NSAlertDefaultReturn) {
				
				// Create path if doesn't exist
				NSURL *newDirectoryURL = [selectedURL URLByAppendingPathComponent:workspaceName isDirectory:YES];
				NSError *error;
				if (![newDirectoryURL checkResourceIsReachableAndReturnError:NULL] &&
					![[NSFileManager defaultManager]
					  createDirectoryAtURL:newDirectoryURL
					  withIntermediateDirectories:NO
					  attributes:nil error:&error]) {
					[self showError:error];
				} else {
					selectedURL = newDirectoryURL;
				}
			}
		}
		
		workspaceRoot = [selectedURL.path directoryPath];
		workspaceRootTextField.stringValue = workspaceRoot ? : @"";
		[self controlTextDidChange:nil];
	}];
}

- (void)createPressed:(id)sender {
	
	if ([[NSAlert
		  alertWithMessageText:@"Please confirm"
		  defaultButton:@"Yes"
		  alternateButton:@"No"
		  otherButton:nil
		  informativeTextWithFormat:@"Do you want to create workspace using \n"
		  "%@ directory?", workspaceRoot] runModal] != NSAlertDefaultReturn) {
		return;
	}
	
	NSDictionary *workspaceSpecs = @{
		@"Client" :	workspaceName,
		@"Owner" :	[[P4Workspace sharedInstance] username],
		@"Description" : @"Created by Piper",
		@"Root" :	workspaceRoot,
		@"Options" :	@"noallwrite clobber rmdir nocompress unlocked",
		@"SubmitOptions" : @"revertunchanged",
		@"LineEnd" : @"local",		 
	};
	
	[[P4Workspace sharedInstance]
	 createWorkspace:workspaceSpecs
	 response:^(P4Operation *operation, NSArray *response) {
		 if (operation.errors) {
			 [self showError:operation.error];
			 return;
		 }
		 
		 [[P4Workspace sharedInstance]
		  setWorkspace:workspaceName
		  response:^(P4Operation *operation, NSArray *response) {
			  if (operation.errors) {
				  [self showError:operation.error];
				  return;
			  }
			  
			  PSLogStore(@"Workspace info", @"%@", response);
			  [self setWorkspace:workspaceName];
			  [self dismiss];
			  
			  if ([delegate respondsToSelector:@selector(workspacePanelDidSelectWorkspace:)])
				  [delegate workspacePanelDidCreateWorkspace:workspaceName];
		  }];
	 }];
}

@end