//
//  ActivityIndicatorView.m
//  OpenStack
//
//  Created by Mike Mayo on 10/9/10.
//  The OpenStack project is provided under the Apache 2.0 license.
//

#import "ActivityIndicatorView.h"
#import <QuartzCore/QuartzCore.h>
#import "AnimatedProgressView.h"

#define kFadeTime 0.25
#define kFontSize 14.0
#define kCornerRadius 7
#define kSpinnerStyle UIActivityIndicatorViewStyleWhite

@implementation ActivityIndicatorView

@synthesize progressView, spinner;

#pragma mark - Object lifecycle

- (id)initWithFrame:(CGRect)frame text:(NSString *)text withProgress:(BOOL)withProgress {
    if ((self = [super initWithFrame:frame])) {
        // border color
        self.backgroundColor = [UIColor colorWithRed:0.498 green:0.498 blue:0.498 alpha:1.0];
        self.layer.cornerRadius = kCornerRadius;
        
        CGRect contentFrame = CGRectInset(self.bounds, 2, 2);
        UIView *contentView = [[[UIView alloc] initWithFrame:contentFrame] autorelease];
        contentView.backgroundColor = [UIColor colorWithRed:0.198 green:0.198 blue:0.198 alpha:1.0];
        contentView.layer.cornerRadius = kCornerRadius;
        [self addSubview:contentView];
        [self sendSubviewToBack:contentView];
        
        self.spinner = [[[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:kSpinnerStyle] autorelease];
        self.spinner.frame = CGRectMake(19.0, 10.0, 20.0, 20.0);
        [self.spinner startAnimating];
        [self addSubview:self.spinner];
        
        UILabel *label = [[[UILabel alloc] initWithFrame:CGRectMake(45.0, 5.0, contentFrame.size.width, 30.0)] autorelease];
        label.textColor = [UIColor whiteColor];
        label.backgroundColor = [UIColor clearColor];
        label.text = text;
        label.font = [UIFont systemFontOfSize:kFontSize];
        [self addSubview:label];
        
        if (withProgress) {
            self.progressView = [[[AnimatedProgressView alloc] initWithProgressViewStyle:UIProgressViewStyleBar] autorelease];
            self.progressView.frame = CGRectMake(10.0, 40.0, frame.size.width - 20.0, 10.0);
            [self addSubview:progressView];
        }
    }
    return self;
}

- (id)initWithFrame:(CGRect)frame text:(NSString *)text {
    return [self initWithFrame:frame text:text withProgress:NO];
}

- (id)initWithText:(NSString *)text withProgress:(BOOL)withProgress {
    return [self initWithFrame:[self frameForText:text withProgress:withProgress] text:text withProgress:withProgress];
}

- (id)initWithText:(NSString *)text {
    return [self initWithText:text withProgress:NO];
}

+ (id)activityIndicatorViewWithText:(NSString *)text withProgress:(BOOL)withProgress {
    return [[[self alloc] initWithText:text withProgress:withProgress] autorelease];
}

+ (id)activityIndicatorViewWithText:(NSString *)text {
        return [self activityIndicatorViewWithText:text withProgress:NO];
}

+ (id)activityIndicatorViewWithText:(NSString *)text withProgress:(BOOL)withProgress andAddToView:(UIView *)view scrollOffset:(CGFloat)offset {
    ActivityIndicatorView *activityIndicatorView = [self activityIndicatorViewWithText:text withProgress:withProgress];
    [activityIndicatorView addToView:view scrollOffset:offset];
    return activityIndicatorView;
}

+ (id)activityIndicatorViewWithText:(NSString *)text withProgress:(BOOL)withProgress andAddToView:(UIView *)view {
    return [self activityIndicatorViewWithText:text withProgress:withProgress andAddToView:view scrollOffset:0.0];
}

+ (id)activityIndicatorViewWithText:(NSString *)text andAddToView:(UIView *)view scrollOffset:(CGFloat)offset {
    return [self activityIndicatorViewWithText:text withProgress:NO andAddToView:view scrollOffset:offset];
}

+ (id)activityIndicatorViewWithText:(NSString *)text andAddToView:(UIView *)view {
    return [self activityIndicatorViewWithText:text withProgress:NO andAddToView:view scrollOffset:0.0];
}

#pragma mark - View lifecycle

- (void)didMoveToSuperview {
    [super didMoveToSuperview];
    self.superview.userInteractionEnabled = NO;
}

#pragma mark - Memory management

- (void)dealloc {
    [progressView release];
    [spinner release];
    [super dealloc];
}

#pragma mark - Internal

- (CGRect)frameForText:(NSString *)text withProgress:(BOOL)withProgress {
    CGSize textSize = [text sizeWithFont:[UIFont systemFontOfSize:kFontSize]
                       constrainedToSize:CGSizeMake(300.0f, 9000.0f)
                           lineBreakMode:UILineBreakModeWordWrap];
    CGFloat baseWidth = 62.0;
    CGFloat width = baseWidth + textSize.width;
    CGFloat x = (320.0 - width) / 2;
    return CGRectMake(x, 146.0, width, withProgress ? 60.0 : 40.0);
}

#pragma mark - Actions

- (void)addToView:(UIView *)view scrollOffset:(CGFloat)offset {
    self.alpha = 0.0;
    [view addSubview:self];
    
    self.center = view.center;

    // if it's a scroll view, move the frame down
    CGRect newFrame = self.frame;
    newFrame.origin.y = 146.0 + offset;
    self.frame = newFrame;
    
    [UIView animateWithDuration:kFadeTime animations:^{
        self.alpha = 1.0;
    }];
}

- (void)addToView:(UIView *)view {
    [self addToView:view scrollOffset:0.0];
}

- (void)removeFromSuperview {
    [self.spinner stopAnimating];
    [UIView animateWithDuration:kFadeTime animations:^{
        self.alpha = 0.0;
    } completion:^(BOOL finished) {
        self.superview.userInteractionEnabled = YES;
        [super removeFromSuperview];
    }];    
}

@end