//
//  P4DepotItem.m
//  Perforce
//
//  Created by Adam Czubernat on 29.05.2013.
//  Copyright (c) 2013 Perforce Software, Inc. All rights reserved.
//

#import "P4DepotItem.h"

@interface P4DepotItem ()
- (void)loadDepots;
- (void)loadMappings;
- (id)initFile:(NSDictionary *)dictionary parentItem:(P4DepotItem *)parent;
- (id)initDirectory:(NSDictionary *)dictionary parentItem:(P4DepotItem *)parent;
- (id)initDepot:(NSDictionary *)dictionary parentItem:(P4DepotItem *)parent;
@end

@implementation P4DepotItem

#pragma mark - P4Item Override

- (id)init {
	if (self = [super init]) {
		flags.directory = YES;
		name = @"Server";
		self.remotePath = @"//";
		self.localPath = [P4Workspace sharedInstance].root;
		[[P4Workspace sharedInstance] addObserver:self];
	}
	return self;
}

- (NSString *)path {
	return self.remotePath;
}

- (BOOL)isEditable {
	return NO;
}

- (id)defaultAction {
	if (flags.directory)
		return nil;

	if (self.localPath.length)
		return [P4ItemAction
				actionForItem:self name:@"Open "
				selector:@selector(openWithCheckout)];
	
	return [P4ItemAction
			actionForItem:self name:@"Open file from server"
			selector:@selector(openFromDepot)];
}

- (NSArray *)actions {
	P4ItemAction *action;
	NSMutableArray *actions = [NSMutableArray array];
	
	BOOL dir = NO;
	BOOL exists = [[NSFileManager defaultManager] fileExistsAtPath:self.localPath
													   isDirectory:&dir];
	
	if (self.localPath.length && !flags.directory) {
		action = [P4ItemAction
				  actionForItem:self name:@"Open"
				  selector:@selector(openWithCheckout)];
		action.disabled = !exists || dir;
		[actions addObject:action];
		
		action = [P4ItemAction
				  actionForItem:self name:@"Open read only"
				  selector:@selector(open)];
		action.disabled = !exists || dir;
		[actions addObject:action];
	}
	
	if (self.isDirectory && parent) {
		
		NSString *mapping = nil;
		SEL selector;
		
		if (self.isIgnored) {
			selector = @selector(mapToWorkspace);
			mapping = @"Stop ignoring folder";
		} else if (self.isMapped) {
			selector = @selector(unmapFromWorkspace);
			mapping = @"Unsync from computer";
		} else if (self.isTracked) {
			selector = @selector(unmapFromWorkspace);
			mapping = @"Ignore folder";
		} else {
			selector = @selector(mapToWorkspace);
			mapping = @"Sync with computer";
		}
		
		[actions insertObject:[P4ItemAction
							   actionForItem:self name:mapping
							   selector:selector] atIndex:0];
	}
	
	if (!self.isDirectory){
		[actions addObject:[P4ItemAction
							actionForItem:self name:@"Open file from server"
							selector:@selector(openFromDepot)]];
	}
	
	if (self.localPath.length) {
		action = [P4ItemAction
				  actionForItem:self name:@"Show in Finder"
				  selector:@selector(showInFinder)];
		action.disabled = !exists || dir != flags.directory;
		[actions addObject:action];
	}
	
	if (!flags.directory) {
		[actions addObject:[P4ItemAction
							actionForItem:self name:@"Show Versions"
							selector:@selector(showVersions)]];
	}
	
	if (parent)
		[actions addObject:[P4ItemAction
							actionForItem:self name:@"Copy link"
							selector:@selector(copyShareLink)]];
	
	return actions;
}

- (void)loadPath:(NSString *)preloadPath {
	NSAssert([preloadPath hasSuffix:@"/"], @"Loading path without trailing slash");
	NSAssert([preloadPath hasPrefix:@"//"], @"Loading depot path without // prefix");
	
	flags.loading = YES;
	children = [NSMutableArray array];
	
	NSString *selfPath = [self.remotePath lowercaseString];
	NSString *relative = [preloadPath relativePath:self.remotePath];
	relative = [[relative stringByRemovingSuffix:@"/"] lowercaseString];

	NSString *subpath = selfPath;
	NSMutableArray *subpaths = [NSMutableArray arrayWithObject:subpath];
	for (NSString *component in [relative pathComponents]) {
		subpath = [subpath stringByAppendingFormat:@"%@/", component];
		[subpaths addObject:subpath];
	}
	
	[[P4Workspace sharedInstance]
	 listDepotFiles:subpaths
	 response:^(P4Operation *operation, NSArray *response) {
		 [operation ignoreErrorsWithCode:P4ErrorMustReferToClient];
		 
		 if (operation.errors && ([self failWithError:operation.error], 1))
			 return;
		 
		 NSMutableDictionary *parents = [NSMutableDictionary dictionaryWithObject:self forKey:selfPath];
		 [subpaths removeObject:selfPath];
		 
		 for (NSDictionary *record in response) {
			 NSString *path = [[[record objectForKey:@"dir"] stringByAppendingString:@"/"]
							   lowercaseString];
			 if ([subpaths containsObject:path]) {
				 P4DepotItem *parentItem = [parents objectForKey:[path stringByDeletingPath]];
				 P4DepotItem *item = [[P4DepotItem alloc]
									  initDirectory:record
									  parentItem:parentItem];
				 item->children = [NSMutableArray array];
				 [(NSMutableArray *)parentItem->children addObject:item];
				 
				 [parents setObject:item forKey:path];
				 [subpaths removeObject:path];
			 }
		 }
		 
		 if (subpaths.count) {
			 [self failWithError:
			  [NSError errorWithFormat:@"Couldn't find directory at %@", subpaths.firstObject]];
			 children = nil;
			 return;
		 }
		 
		 for (NSDictionary *record in response) {
			 NSString *path = [[record objectForKey:@"depotFile"] ?:
							   [[record objectForKey:@"dir"] stringByAppendingString:@"/"]
							   lowercaseString];
			 if (![parents objectForKey:path]) {
				 NSString *parentPath = [path stringByDeletingPath];
				 P4DepotItem *itemParent = [parents objectForKey:parentPath];
				 P4DepotItem *item = nil;
				 if ([record objectForKey:@"dir"])
					 item = [[P4DepotItem alloc] initDirectory:record parentItem:itemParent];
				 else
					 item = [[P4DepotItem alloc] initFile:record parentItem:itemParent];
				 [(NSMutableArray *)itemParent->children addObject:item];
			 }
		 }
		 
		 for (P4DepotItem *parentItem in parents.allValues) {
			 [parentItem sortChildren];
			 [parentItem loadMappings];
		 }
		 
		 [self finishLoading];
	 }];
}

#pragma mark - Private

- (void)loadDepots {
	
	[[P4Workspace sharedInstance]
	 listDepots:^(P4Operation *operation, NSArray *response) {
		 if (operation.errors) {
			 [self failWithError:operation.error];
			 return;
		 }
		 
		 NSMutableArray *depots = [NSMutableArray array];
		 for (NSDictionary *depotDict in response) {
			 P4DepotItem *depot = [[P4DepotItem alloc]
								   initDepot:depotDict
								   parentItem:self];
			 [depots addObject:depot];
		 }
		 
		 // Sort files alphanumerically
		 children = depots;
		 [self sortChildren];
		 
		 [self loadMappings];
		 
		 [self finishLoading];
	 }];
}

- (void)loadMappings {
	
	P4Workspace *workspace = [P4Workspace sharedInstance];

	for (P4Item *child in children) {
		
		if (!child->flags.directory)
			return;
		
		BOOL have, mapped;
		NSInteger viewIdx;
		NSString *clientFile = [workspace
								mappingForPath:child.path viewIndex:&viewIdx
								mapped:&mapped have:&have];
		
		child->flags.tracked = NO;
		child->flags.hasMapped = NO;
		child->flags.mapped = NO;
		child->flags.ignored = NO;
		
		if (mapped && clientFile)
			child->flags.mapped = child->flags.tracked = YES;
		else if (clientFile)
			child->flags.tracked = YES;
		else if (have)
			child->flags.hasMapped = YES;
		else if (mapped && !clientFile)
			child->flags.ignored = YES;
		
		child.localPath = clientFile;
		
	};
}

- (id)initFile:(NSDictionary *)dictionary parentItem:(P4DepotItem *)parentItem {
	if (self = [super init]) {
		parent = parentItem;
		metadata = dictionary;
		
		self.remotePath = [metadata objectForKey:@"depotFile"];
		
		// Make path by appending name to parent
		name = self.remotePath.lastPathComponent;
		self.localPath = ([metadata objectForKey:@"clientFile"] ?:
					 [parentItem.localPath stringByAppendingPath:name]);
		
		// Set metadata
		status = [metadata objectForKey:@"action"];
		NSString *user = [metadata objectForKey:@"otherOpen0"];
		NSDictionary *info = [[P4Workspace sharedInstance] userInfo:user];
		statusOwner = [info objectForKey:@"Email"] ?: user;
		flags.tracked = [metadata objectForKey:@"isMapped"] != nil;
		[self refreshTags];
	}
	return self;
}

- (id)initDirectory:(NSDictionary *)dictionary parentItem:(P4DepotItem *)parentItem {
	if (self = [super init]) {
		parent = parentItem;
		metadata = dictionary;
		
		flags.directory = YES;
		self.remotePath = [metadata objectForKey:@"dir"];
		self.remotePath = [self.remotePath stringByAppendingString:@"/"];
		
		// Make path by appending name to parent
		name = self.remotePath.lastPathComponent;
		self.localPath = [parentItem.localPath stringByAppendingPath:name];
				
		// Check if tracked
		BOOL directory;
		flags.tracked = [[NSFileManager defaultManager]
						 fileExistsAtPath:self.localPath isDirectory:&directory] && directory;
	}
	return self;
}

- (id)initDepot:(NSDictionary *)dictionary parentItem:(P4DepotItem *)parentItem {
	if (self = [super init]) {
		parent = parentItem;
		metadata = dictionary;
		
		flags.directory = YES;
		
		// Make path by appending name to parent
		name = [metadata objectForKey:@"name"];
		self.localPath = [parentItem.localPath stringByAppendingPath:name];
		
		self.remotePath = [parentItem.remotePath stringByAppendingFormat:@"%@/", name];
	}
	return self;
}

@end