//
//  MTImagePickerAlbumController.swift
//  MTImagePicker
//
//  Created by Luo on 9/6/16.
//  Copyright © 2016 Luo. All rights reserved.
//

import UIKit
import AssetsLibrary

class MTImagePickerAlbumCell: UITableViewCell {

    @IBOutlet weak var lbAlbumCount: UILabel!
    @IBOutlet weak var lbAlbumName: UILabel!
    @IBOutlet weak var posterImageView: UIImageView!

    func setup(model: MTImagePickerAlbumModel) {
        self.lbAlbumCount.text = "(\(model.getAlbumCount()))"
        self.lbAlbumName.text = model.getAlbumName()
        self.posterImageView.image = model.getAlbumImage(size: self.posterImageView.frame.size)
    }
}

class MTImagePickerAlbumsController: UITableViewController {

    var mediaTypes: [MTImagePickerMediaType] = [MTImagePickerMediaType.Photo]
    var source: MTImagePickerSource = .ALAsset
    var maxCount: Int = Int.max
    weak var delegate: MTImagePickerControllerDelegate?

    private var dataSource = [MTImagePickerAlbumModel]()
    private var _source: MTImagePickerSource = .Photos

    class var instance: MTImagePickerAlbumsController {
        get {
            let storyboard = UIStoryboard(name: "MTImagePicker", bundle: Bundle.main)
            let vc = storyboard.instantiateViewController(withIdentifier: "MTImagePickerAlbumsController") as! MTImagePickerAlbumsController
            return vc
        }
    }

    override func viewDidLoad() {
        self.tableView.tableFooterView = UIView()
        MTImagePickerDataSource.fetch(type: self.source, mediaTypes: self.mediaTypes, complete: { (dataSource) in
            self.dataSource = dataSource
            self.tableView.reloadData()
        })
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return self.dataSource.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let model = self.dataSource[indexPath.row]
        let cell = self.tableView.dequeueReusableCell(withIdentifier: "MTImagePickerAlbumCell", for: indexPath as IndexPath)
        (cell as? MTImagePickerAlbumCell)?.setup(model: model)
        return cell

    }

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let model = self.dataSource[indexPath.row]
        self.pushToMTImagePickerController(model: model, animate: true)
        tableView.deselectRow(at: indexPath as IndexPath, animated: true)
    }

    func pushToMTImagePickerController(model: MTImagePickerAlbumModel, animate: Bool) {
        let controller = MTImagePickerAssetsController.instance
        controller.groupModel = model
        controller.delegate = self.delegate
        controller.maxCount = self.maxCount
        controller.source = self.source
        self.navigationController?.pushViewController(controller, animated: animate)
    }
    @IBAction func btnCancelTouch(_ sender: AnyObject) {
        self.dismiss(animated: true, completion: nil)
    }
}