//
//  SPTableInfo.m
//  sequel-pro
//
//  Created by Ben Perry on 6/05/08.
//  Copyright 2008 Ben Perry. All rights reserved.
//

#import "SPTableInfo.h"
#import "ImageAndTextCell.h"
#import <MCPKit_bundled/MCPKit_bundled.h>
#import "CMMCPConnection.h"
#import "CMMCPResult.h"
#import "TableDocument.h"

@implementation SPTableInfo

- (id)init
{
	self = [super init];
	info = [[NSMutableArray alloc] init];
	return self;
}

- (void)awakeFromNib
{
	[[NSNotificationCenter defaultCenter] addObserver:self
											 selector:@selector(tableChanged:) 
												 name:NSTableViewSelectionDidChangeNotification 
											   object:tableList];
	[info addObject:NSLocalizedString(@"TABLE INFORMATION",@"header for table info pane")];
	[infoTable reloadData];
}


- (void)dealloc
{
	[[NSNotificationCenter defaultCenter] removeObserver:self];
	
	[info release];
		
	[super dealloc];
}

- (int)numberOfRowsInTableView:(NSTableView *)aTableView
{
	return [info count];
}

- (id)tableView:(NSTableView *)aTableView
objectValueForTableColumn:(NSTableColumn *)aTableColumn
			row:(int)rowIndex
{
	return [info objectAtIndex:rowIndex];
}

- (BOOL)tableView:(NSTableView *)aTableView shouldSelectRow:(int)rowIndex
{
	// row 1 and 6 should be editable - ie be able to rename the table and change the auto_increment value.
	return NO;//(rowIndex == 1 || rowIndex == 6 );
}


- (BOOL)tableView:(NSTableView *)aTableView isGroupRow:(int)row
{
	// This makes the top row (TABLE INFORMATION) have the diff styling
	return (row == 0);	
}

- (void)tableView:(NSTableView *)aTableView 
  willDisplayCell:(id)aCell 
   forTableColumn:(NSTableColumn *)aTableColumn 
			  row:(int)rowIndex
{
	if ((rowIndex > 0) && [[aTableColumn identifier] isEqualToString:@"info"]) {
		[(ImageAndTextCell*)aCell setImage:[NSImage imageNamed:@"CodeAssistantProtocol"]];
		[(ImageAndTextCell*)aCell setIndentationLevel:1];
	} else {
		[(ImageAndTextCell*)aCell setImage:nil];
		[(ImageAndTextCell*)aCell setIndentationLevel:0];
	}
}

- (void)tableChanged:(NSNotification *)notification
{
	NSString *query;
	CMMCPResult *theResult;
	NSDictionary *theRow;
	
	[info removeAllObjects];
	[info addObject:@"TABLE INFORMATION"];
		
	if ([tableListInstance table])
	{
		if ([(NSString *)[tableListInstance table] isEqualToString:@""]) {
			[info addObject:@"multiple tables"];
			
		} else {
			// Notify that we are about to perform a query
			[[NSNotificationCenter defaultCenter] postNotificationName:@"SMySQLQueryWillBePerformed" object:self];

			// Create the query and get results
			query = [NSString stringWithFormat:@"SHOW TABLE STATUS LIKE '%@'", [tableListInstance table]];
			
			// This line triggers a bug when opening a new window. but only after having closed a window
			theResult = [[tableDocumentInstance sharedConnection] queryString:query];

			// Check for errors
			if (![[[tableDocumentInstance sharedConnection] getLastErrorMessage] isEqualToString:@""]) {
				[info addObject:@"error occurred"];
				return;
			}
			
			// Process result
			theRow = [[theResult fetch2DResultAsType:MCPTypeDictionary] lastObject];
			
			// Check for "Create_time" == NULL
			if (![[theRow objectForKey:@"Create_time"] isNSNull]) {
				// Setup our data formatter
				NSDateFormatter *createDateFormatter = [[[NSDateFormatter alloc] init] autorelease];
				[createDateFormatter setDateStyle:NSDateFormatterShortStyle];
				[createDateFormatter setTimeStyle:NSDateFormatterNoStyle];
				
				// Convert our string date from the result to an NSDate.
				NSDate *create_date = [NSDate dateWithNaturalLanguageString:[theRow objectForKey:@"Create_time"]];
				
				// Add the creation date to the infoTable
				[info addObject:[NSString stringWithFormat:@"created: %@", [createDateFormatter stringFromDate:create_date]]];
			}

			// Check for "Update_time" == NULL - InnoDB tables don't have an update time
			if (![[theRow objectForKey:@"Update_time"] isNSNull]) {
				// Setup our data formatter
				NSDateFormatter *updateDateFormatter = [[[NSDateFormatter alloc] init] autorelease];
				[updateDateFormatter setDateStyle:NSDateFormatterShortStyle];
				[updateDateFormatter setTimeStyle:NSDateFormatterNoStyle];
				
				// Convert our string date from the result to an NSDate.
				NSDate *update_date = [NSDate dateWithNaturalLanguageString:[theRow objectForKey:@"Update_time"]];
				
				// Add the update date to the infoTable
				[info addObject:[NSString stringWithFormat:@"updated: %@", [updateDateFormatter stringFromDate:update_date]]];
			}
			
			[info addObject:[NSString stringWithFormat:@"rows: %@", [theRow objectForKey:@"Rows"]]];
			[info addObject:[NSString stringWithFormat:@"size: %@", [self sizeFromBytes:[[theRow objectForKey:@"Data_length"] intValue]]]];
			[info addObject:[NSString stringWithFormat:@"encoding: %@", [[[theRow objectForKey:@"Collation"] componentsSeparatedByString:@"_"] objectAtIndex:0]]];
			[info addObject:[NSString stringWithFormat:@"auto_increment: %@", [theRow objectForKey:@"Auto_increment"]]];
			
			// Notify that we've finished performing the query
			[[NSNotificationCenter defaultCenter] postNotificationName:@"SMySQLQueryHasBeenPerformed" object:self];
		}
	}
	
	[infoTable reloadData];
}

- (NSString *)sizeFromBytes:(int)theSize
{
	NSNumberFormatter *numberFormatter = [[[NSNumberFormatter alloc] init] autorelease];
	float floatSize = theSize;
	
	[numberFormatter setNumberStyle:NSNumberFormatterDecimalStyle];
	
	if (theSize < 1023) {
		[numberFormatter setFormat:@"#,##0 B"];
		return [numberFormatter stringFromNumber:[NSNumber numberWithInt:theSize]];
	}
	
	floatSize = floatSize / 1024;
	
	if (floatSize < 1023) {
		[numberFormatter setFormat:@"#,##0.0 KB"];
		return [numberFormatter stringFromNumber:[NSNumber numberWithFloat:floatSize]];
	}
	
	floatSize = floatSize / 1024;
	
	if (floatSize < 1023) {
		[numberFormatter setFormat:@"#,##0.0 MB"];
		return [numberFormatter stringFromNumber:[NSNumber numberWithFloat:floatSize]];
	}
	
	floatSize = floatSize / 1024;
	
	[numberFormatter setFormat:@"#,##0.0 GB"];
	return [numberFormatter stringFromNumber:[NSNumber numberWithFloat:floatSize]];
}

@end