//
//  AccountSettingsViewController.m
//  OpenStack
//
//  Created by Mike Mayo on 12/14/10.
//  The OpenStack project is provided under the Apache 2.0 license.
//

#import "AccountSettingsViewController.h"
#import "OpenStackAccount.h"
#import "ActivityIndicatorView.h"
#import "Provider.h"
#import "RSTextFieldCell.h"
#import "UIColor+MoreColors.h"
#import "OpenStackAppDelegate.h"
#import "UIViewController+Conveniences.h"
#import "OpenStackRequest.h"

#define kUsername 0
#define kAuthToken 1

@implementation AccountSettingsViewController

@synthesize account, username, authToken;

#pragma mark - View lifecycle

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation {
    return ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) || (toInterfaceOrientation == UIInterfaceOrientationPortrait);
}

- (void)viewDidLoad {
    [super viewDidLoad];
    self.navigationItem.title = @"Authentication";
    userDetailsSection = 0;
    getTokenSection = 1;
    [self addSaveButton];
    self.navigationItem.rightBarButtonItem.enabled = NO;
}

#pragma mark - Memory management

- (void)dealloc {
    [username release];
    [authToken release];
    [account release];
    [super dealloc];
}

#pragma mark - Internal

- (void) updateSaveButtonForUsername:(NSString *)checkUsername andAuthToken:(NSString *)checkAuthToken {
    self.navigationItem.rightBarButtonItem.enabled = (checkUsername && checkUsername.length &&
                                                      checkAuthToken &&checkAuthToken.length &&
                                                      (![checkUsername isEqualToString:account.username] ||
                                                       ![checkAuthToken isEqualToString:account.authToken]));
}

#pragma mark - Properties

- (void)setUsername:(NSString *)aUsername {
    [username release];
    username = [aUsername retain];
    [self updateSaveButtonForUsername:username andAuthToken:authTokenTextField.text];
}

- (void)setAuthToken:(NSString *)anAuthToken {
    [authToken release];
    authToken = [anAuthToken retain];
    [self updateSaveButtonForUsername:usernameTextField.text andAuthToken:authToken];
}

#pragma mark - Actions

- (void)setUsername:(NSString *)aUsername andAuthToken:(NSString *)anAuthToken {
    if (aUsername) {
        [username release];
        username = [aUsername retain];
    }
    if (anAuthToken) {
        [authToken release];
        authToken = [anAuthToken retain];
    }
    [self updateSaveButtonForUsername:username andAuthToken:authToken];
}

#pragma mark - UITableViewDataSource

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 2;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    if (section == userDetailsSection)
        return 2;
    else
        return 1;
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
    if (section == userDetailsSection)
        return [NSString stringWithFormat:@"%@ Login", self.account.provider.name];
    else
        return nil;
}

- (NSString *)tableView:(UITableView *)tableView titleForFooterInSection:(NSInteger)section {
    if (section == userDetailsSection)
        return @"API Version 1.0";
    else
        return nil;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    static NSString *CellIdentifier = @"Cell";
    RSTextFieldCell *cell = nil;
    if (indexPath.section == userDetailsSection) {
        cell = (RSTextFieldCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
        if (cell == nil) {
            cell = [[[RSTextFieldCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:CellIdentifier] autorelease];
            cell.selectionStyle = UITableViewCellSelectionStyleNone;
        }
        
        if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPad) {
            cell.backgroundColor = [UIColor colorWithRed:1 green:1 blue:1 alpha:0.8];
        }
        
        [cell.textLabel setBackgroundColor:[UIColor clearColor]];
        
        if (indexPath.row == kUsername) {
            cell.textLabel.text = @"Username";
            usernameTextField = cell.textField;
            usernameTextField.delegate = self;
            usernameTextField.secureTextEntry = NO;
            usernameTextField.returnKeyType = UIReturnKeyNext;
            if (username) {
                usernameTextField.text = username;
            } else {
                usernameTextField.text = self.account.username;
            }
        } else if (indexPath.row == kAuthToken) {
            cell.textLabel.text = @"Token";
            authTokenTextField = cell.textField;
            authTokenTextField.secureTextEntry = NO;
            authTokenTextField.delegate = self;
            authTokenTextField.returnKeyType = UIReturnKeyDone;
            if (authToken) {
                authTokenTextField.text = authToken;
            } else {
                authTokenTextField.text = self.account.authToken;
            }
        }
    } else {
        cell = (RSTextFieldCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
        if (cell == nil) {
            cell = [[[RSTextFieldCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
        }
        
        cell.textLabel.text = @"Get Token";
    }
    return cell;
}

#pragma mark - UITableViewDelegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    if (indexPath.section == getTokenSection) {
        NSString *protocol = [[[[[NSBundle mainBundle] objectForInfoDictionaryKey:@"CFBundleURLTypes"] objectAtIndex:0] objectForKey:@"CFBundleURLSchemes"] objectAtIndex:0];
        NSString *loginURL = [NSString stringWithFormat:@"%@?next=%@://login&force=", account.pithosLoginURLPrefix, protocol];
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:loginURL]];
        [tableView deselectRowAtIndexPath:indexPath animated:NO];
    }
}

#pragma mark - UITextFieldDelegate

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    if ([textField isEqual:usernameTextField]) {
        [authTokenTextField becomeFirstResponder];
    }
    return NO;
}

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
    NSString *result = [textField.text stringByReplacingCharactersInRange:range withString:string];
    if ([textField isEqual:usernameTextField]) {
        self.username = result;
    } else if ([textField isEqual:authTokenTextField]) {
        self.authToken = result;
    }
    return YES;
}

#pragma mark - Button Handlers

- (void)saveButtonPressed:(id)sender {
    self.navigationItem.rightBarButtonItem.enabled = NO;
    [self authenticate];
}

#pragma mark - Authentication

- (void)authenticate {
    if (!usernameTextField.text || [usernameTextField.text isEqualToString:@""]) {
        [self alert:nil message:@"Please enter your Username."];
        self.navigationItem.rightBarButtonItem.enabled = YES;
        [usernameTextField becomeFirstResponder];
    } else if (!authTokenTextField.text || [authTokenTextField.text isEqualToString:@""]) {
        [self alert:nil message:@"Please enter your Token."];
        self.navigationItem.rightBarButtonItem.enabled = YES;
        [authTokenTextField becomeFirstResponder];
    } else {
        OpenStackAccount *temporaryAccount = [[[OpenStackAccount alloc] init] autorelease];
        temporaryAccount.provider = account.provider;
        temporaryAccount.username = usernameTextField.text;
        temporaryAccount.authToken = authTokenTextField.text;
        
        __block ActivityIndicatorView *activityIndicatorView = [ActivityIndicatorView activityIndicatorViewWithText:@"Authenticating..."
                                                                                                       andAddToView:self.view];
        OpenStackRequest *request = [OpenStackRequest authenticationRequest:temporaryAccount];
        request.completionBlock = ^{
            [activityIndicatorView removeFromSuperview];
            if ([request isSuccess]) {
                account.username = request.account.username;
                account.authToken = request.account.authToken;
                NSString *storageURLString = [[request responseHeaders] objectForKey:@"X-Storage-Url"];
                if (storageURLString) {
                    account.filesURL = [NSURL URLWithString:storageURLString];
                } else {
                    account.filesURL = [[account.hostURL URLByAppendingPathComponent:@"v1"] URLByAppendingPathComponent:account.username];
                }
                [account persist];
            } else {
                self.navigationItem.rightBarButtonItem.enabled = YES;
                [self alert:@"Authentication Failure" message:@"Please check your Username and Token."];
            }
        };
        request.failedBlock = ^{
            [activityIndicatorView removeFromSuperview];
            self.navigationItem.rightBarButtonItem.enabled = YES;
            if ([request responseStatusCode] == 401) {
                [self alert:@"Authentication Failure" message:@"Please check your Username and Token."];
            } else {
                [self failOnBadConnection];
            }
        };
        [request startAsynchronous];
    }
}

@end