//
//  MPPositive_BatchDeletionViewController.swift
//  relax.offline.mp3.music
//
//  Created by Mr.Zhou on 2024/12/23.
//

import UIKit
///批量删除
class MPPositive_BatchDeletionViewController: MPPositive_BaseViewController {
    //确认按钮
    private lazy var confirmBtn:UIButton = {
        let btn:UIButton = .init()
        btn.setTitle("Confirm", for: .normal)
        btn.setTitleColor(.white, for: .normal)
        btn.titleLabel?.font = .systemFont(ofSize: 16*width, weight: .medium)
        btn.addTarget(self, action: #selector(deleteAction(_ :)), for: .touchUpInside)
        return btn
    }()
    //tableView
    private lazy var tableView:MPPositive_DefaultTableView = {
        let tableView:MPPositive_DefaultTableView = .init(frame: .zero, style: .plain)
        tableView.dataSource = self
        tableView.delegate = self
        tableView.register(MPPositive_AddSongTableViewCell.self, forCellReuseIdentifier: MPPositive_AddSongTableViewCellID)
        return tableView
    }()
    private let MPPositive_AddSongTableViewCellID = "MPPositive_AddSongTableViewCell"
    private var status:[Bool] = []
    private var offlines:[MPPositive_DownloadViewModel]
    init(withOfflines offlines:[MPPositive_DownloadViewModel]) {
        self.offlines = offlines
        super.init(nibName: nil, bundle: nil)
        refreshStatus()
    }
    
    required init?(coder: NSCoder) {
        self.offlines = []
        super.init(coder: coder)
        refreshStatus()
    }
    override func viewDidLoad() {
        super.viewDidLoad()
        setPopBtn()
        setTitle("Batch Deletion")
        config()
    }
    private func config() {
        navView.addSubview(confirmBtn)
        confirmBtn.snp.makeConstraints { make in
            make.right.equalToSuperview().offset(-16*width)
            make.centerY.equalToSuperview()
        }
        view.addSubview(tableView)
        tableView.snp.makeConstraints { make in
            make.left.bottom.right.equalToSuperview()
            make.top.equalTo(navView.snp.bottom)
        }
    }
    //补充status
    private func refreshStatus() {
        //每一个离线资源都产生对应的状态值(默认false)
        self.status = offlines.compactMap({_ in false})
        //刷新页面
        DispatchQueue.main.async {
            [weak self] in
            guard let self = self else {return}
            tableView.showMessage(status.count)
            tableView.reloadData()
        }
    }
    //确认删除
    @objc private func deleteAction(_ sender:UIButton) {
        view.endEditing(true)
        //将状态值为ture的数据取出
        var array:[MPPositive_DownloadViewModel] = []
        for (index, item) in status.enumerated() {
            if item == true {
                array.append(offlines[index])
            }
        }
        guard !array.isEmpty else {
            MP_HUD.showWithStatus(hudStatus: .error, text: "Please select the song", delay: 1.0, completion: nil)
            return
        }
        MP_HUD.loading()
        array.forEach { item in
            //确定删除
            MP_DownloadManager.shared.deleteFileDocuments(item.loadItem.videoId ?? "") { videoId in
            }
        }
        MP_HUD.success("Removed".localizableString(), delay: 1.0) { [weak self] in
            self?.navigationController?.popViewController(animated: true)
        }
    }
}
//MARK: - tableView
extension MPPositive_BatchDeletionViewController: UITableViewDataSource, UITableViewDelegate {
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return offlines.count
    }
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: MPPositive_AddSongTableViewCellID, for: indexPath) as! MPPositive_AddSongTableViewCell
        cell.download = offlines[indexPath.row]
        cell.statu = status[indexPath.row]
        return cell
    }
    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        //调整当前选中的状态值
        status[indexPath.row] = !status[indexPath.row]
        tableView.reloadData()
    }
}