//
//  MenuViewController.swift
//  Earthquake Network
//
//  Created by Busi Andrea on 27/07/2020.
//  Copyright © 2020 Earthquake Network. All rights reserved.
//

import UIKit
import SafariServices


class MenuViewController: UITableViewController {

    enum MenuItem: CaseIterable {
        case header
        case settings
        case informations
        case faq
        case help
        case author
        case sponsors
        case disclaimer
        case privacy
        
        var title: String {
            switch self {
            case .header: return ""
            case .settings: return NSLocalizedString("Impostazioni", comment: "voce menu")
            case .informations: return NSLocalizedString("Informazioni", comment: "voce menu")
            case .faq: return NSLocalizedString("F.A.Q.", comment: "voce menu")
            case .help: return NSLocalizedString("Help", comment: "voce menu")
            case .author: return NSLocalizedString("Autore", comment: "voce menu")
            case .sponsors: return NSLocalizedString("Patrocinatori", comment: "voce menu")
            case .disclaimer: return NSLocalizedString("Disclaimer", comment: "voce menu")
            case .privacy: return NSLocalizedString("Privacy", comment: "voce menu")
            }
        }
        
        var icon: String? {
            switch self {
            case .header: return nil
            case .settings: return "menu-icon-settings"
            case .informations: return "menu-icon-info"
            case .faq: return "menu-icon-faq"
            case .help: return "menu-icon-help"
            case .author: return "menu-icon-author"
            case .sponsors: return "menu-icon-sponsors"
            case .disclaimer: return "menu-icon-terms"
            case .privacy: return "menu-icon-privacy"
            }
        }
    }
    
    private let items = MenuItem.allCases
    private static let CellIdentifierHeader = "HeaderCell"
    private static let CellIdentifierItem = "MenuItemCell"
    
    // MARK: - View Lifecycle
    
    override func viewDidLoad() {
        super.viewDidLoad()
    }

    // MARK: - Table view data source

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        items.count
    }
    
    override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
        let item = items[indexPath.row]
        if item == .header {
            return 160
        }
        return 60
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let item = items[indexPath.row]
        if item == .header {
            let cell = tableView.dequeueReusableCell(withIdentifier: Self.CellIdentifierHeader, for: indexPath) as! MenuHeaderTableViewCell
            cell.updateUI()
            return cell
        }
        
        let cell = tableView.dequeueReusableCell(withIdentifier: Self.CellIdentifierItem, for: indexPath) as! MenuItemTableViewCell
        cell.item = item
        return cell
    }
    
    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        self.revealViewController()?.revealToggle(animated: true)
        
        let item = items[indexPath.row]
        switch item {
        case .header:
            break
        case .settings:
            NotificationCenter.default.post(name: NSNotification.Name(rawValue: NOTIFICHE_SISMI), object: nil)
        default:
            // open url if available
            if let url = externalUrl(for: item) {
                let controller = SFSafariViewController(url: url)
                present(controller, animated: true, completion: nil)
            }
        }
    }
    
    // MARK: - Private
    
    private func externalUrl(for item: MenuItem) -> URL? {
        let baseUrl = EQNWebsiteAddress
        switch item {
        case .informations: return URL(string: "\(baseUrl)")
        case .faq:          return URL(string: "\(baseUrl)/f-a-q/")
        case .help:         return URL(string: "\(baseUrl)/help/")
        case .author:       return URL(string: "\(baseUrl)/contact/")
        case .sponsors:     return URL(string: "\(baseUrl)/sponsors/")
        case .disclaimer:   return URL(string: "\(baseUrl)/terms-conditions/")
        case .privacy:      return URL(string: "\(baseUrl)/privacy/")
        default:            return nil
        }
    }
}