//
//  GroupPageController.swift
//  PaiAi
//
//  Created by zhengjianfei on 16/3/28.
//  Copyright © 2016年 FFIB. All rights reserved.
//

import UIKit
import RxSwift
import RxCocoa
import RxDataSources
import PaiaiUIKit
import PaiaiDataKit

final class GroupPageController: UIViewController {

    // MARK: Storyboard property
    @IBOutlet var collectionView: UICollectionView!
    @IBOutlet weak var photographLabel: UILabel!
    @IBOutlet weak var photographBtn: UIButton!

    // MARK: custom UI property
    var maskImageView = UIImageView()
    var maskLabel = UILabel()

    // MARK: data property
    var viewModel: GroupPageViewModel!
    fileprivate let disposeBag = DisposeBag()
    
    // MARK: view function
    override func viewDidLoad() {
        super.viewDidLoad()
        
        collectionView.register(UINib(nibName: "PhotoCell", bundle: nil),
                                forCellWithReuseIdentifier: "photoCell")
        
        configurationRx()
        
        addReloadControl()
    }

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(true)
        makeNavigationBar()
    }

    // MARK: init interface
    func makeNavigationBar() {
//        navigationItem.setRightBars(buttonSpace: 0,
//                                    images: [UIImage(named: "二维码"), UIImage(named: "更多-右上角-1")],
//                                    actions: [#selector(showEWM), #selector(pushToGroupDetailController)],
//                                    target: self)
//        titleWithbackBar = ""
//        let barView = UIView(frame: CGRect(x: 0, y: 0, width: kScreenWidth - 150, height: 40))
//        let label = UILabel()
////        label.text = groupModel.group_name
//        label.textColor = UIColor.white
//        let labelWidth = min(label.sizeThatFits(CGSize(width: kScreenWidth - 200, height: 40)).width, kScreenWidth - 200)
//        let imageView = UIImageView(frame: CGRect(x: 0, y: 2, width: 40, height: 40))
//        imageView.center = CGPoint(x: barView.center.x - labelWidth / 2, y: barView.center.y)
////        imageView.setImageWithNullableURL(groupModel.group_avatar, placeholderImage: UIImage(named: "Group\(groupModel.group_default_avatar)"))
//        imageView.cornerRadius = 20
//        label.frame = CGRect(x: 40 + imageView.x + 5, y: 2, width: kScreenWidth - 200, height: 40)
//        barView.addSubViews([imageView, label])
//        navigationItem.titleView = barView
    }
    
    var dataSource: RxCollectionViewSectionedAnimatedDataSource<AnimatableSectionModel<Int, PhotoItem>> {
        return RxCollectionViewSectionedAnimatedDataSource<AnimatableSectionModel<Int, PhotoItem>>(configureCell: { (dataSource, collectionView, indexPath, item) -> UICollectionViewCell in
            let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "photoCell", for: indexPath) as! PhotoCell
            cell.setInfo(item, source: .group)
            return cell
        })
    }

    func configurationRx() {
        
        collectionView.rx.setDelegate(self).disposed(by: disposeBag)
        
//        viewModel.isReload.subscribe(onNext: {
//            [weak self] _ in
//            guard let `self` = self else { return }
//            self.collectionView.es.stopPullToRefresh()
//        }).disposed(by: disposeBag)
        
        viewModel.groupPhotoContents
            .bind(to: collectionView.rx.items(dataSource: dataSource))
            .disposed(by: disposeBag)
        
        collectionView.rx.modelSelected(PhotoItem.self)
            .subscribe(onNext: { [unowned self] in self.viewModel.didSelect($0) })
            .disposed(by: disposeBag)
        
        collectionView.collectionViewLayout = WaterfallFlowLayout()
    }
    
    func addReloadControl() {
//        collectionView.es.addPullToRefresh {
//            [unowned self] in
//            self.viewModel.reload()
//        }
//        collectionView.es.startPullToRefresh()
    }
}

extension GroupPageController: UICollectionViewDelegateFlowLayout {

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        return viewModel.layoutSizeForIndexPath(indexPath)
    }
}

// MARK: imagepicker delegate
extension GroupPageController: UIImagePickerControllerDelegate, UINavigationControllerDelegate {

    @IBAction func takePhotoAction() {
        let vc = UIImagePickerController()
        #if (arch(i386) || arch(x86_64))
            vc.sourceType = .photoLibrary
        #else
            vc.sourceType = .camera
        #endif
        vc.delegate = self
        present(vc, animated: true, completion: nil)
    }

    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
        dismiss(animated: true, completion: nil)
        
        guard let image = info[.originalImage] as? UIImage else { return }
        
        viewModel.submit(image: image)
    }
    
    func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
        dismiss(animated: true, completion: nil)
    }

}