//
//  Copyright (c) 2015 Google Inc.
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

#import "PostListViewController.h"
#import "Post.h"
#import "PostTableViewCell.h"
#import "PostDataSource.h"
#import "PostDetailTableViewController.h"

@import Firebase;
@import FirebaseUI;

@implementation PostListViewController

- (void)viewDidLoad {
  [super viewDidLoad];

  // [START create_database_reference]
  self.ref = [[FIRDatabase database] reference];
  // [END create_database_reference]

  self.dataSource = [[PostDataSource alloc] initWithQuery:[self getQuery]
                                               modelClass:[Post class]
                                                 nibNamed:@"PostTableViewCell"
                                      cellReuseIdentifier:@"post"
                                                     view:self.tableView];

  [self.dataSource
   populateCellWithBlock:^void(PostTableViewCell *__nonnull cell,
                               Post *__nonnull post) {
     cell.authorImage.image = [UIImage imageNamed:@"ic_account_circle"];
     cell.authorLabel.text = post.author;
     NSString *imageName = [post.stars objectForKey:[self getUid]] ? @"ic_star" : @"ic_star_border";
     [cell.starButton setImage:[UIImage imageNamed:imageName] forState:UIControlStateNormal];
     cell.numStarsLabel.text = [NSString stringWithFormat:@"%d", post.starCount];
     cell.postTitle.text = post.title;
     cell.postBody.text = post.body;
   }];

  self.tableView.dataSource = self.dataSource;
  self.tableView.delegate = self;
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
  [self performSegueWithIdentifier:@"detail" sender:indexPath];
}

- (void)viewWillAppear:(BOOL)animated {
  [self.tableView reloadData];
}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
  return 150;
}

- (NSString *) getUid {
  return [FIRAuth auth].currentUser.uid;
}

- (FIRDatabaseQuery *) getQuery {
  return self.ref;
}

-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
  NSIndexPath *path = sender;
  PostDetailTableViewController *detail = segue.destinationViewController;
  FirebaseTableViewDataSource *source = self.dataSource;
  FIRDataSnapshot *snapshot = [source objectAtIndex:path.row];
  detail.postKey = snapshot.key;
}
@end