//
//  ForayCoordinator.swift
//  foray
//
//  Created by Nicholas Tay on 21/3/2022.
//

import Foundation
import UIKit
import LinkPresentation

class ForayCoordinator: Coordinator {
    var childCoordinators = [Coordinator]()
    var window: UIWindow?
    var navigationController: UINavigationController
    var loadingOverlay: ForayLoadingOverlay
    
    init(window: UIWindow?, navigationController: UINavigationController) {
        self.window = window
        self.navigationController = navigationController
        self.loadingOverlay = ForayLoadingOverlay(viewController: navigationController)
    }
    
    func start() {
        push(vc: ForayTableViewController(), animated: false)
    }
    
    let detailViewController = ForayDetailViewController()
    
    func showDetails(item: PenguinItemViewModel) {
        detailViewController.setDetails(item: item)
        push(vc: detailViewController)
    }
    
    func showLoading() {
        loadingOverlay.show()
    }
    
    func hideLoading() {
        loadingOverlay.hide()
    }

    func share(item: PenguinItemViewModel) {
        let itemSource = ForayLinkPresentationSource(title: "\(item.name) (#\(item.id))", shareURL: URL(string: "https://nick.tay.blue/")!, image: item.icon)
        let activity = UIActivityViewController(activityItems: [itemSource], applicationActivities: nil)
        navigationController.present(activity, animated: true)
    }
}

class ForayLinkPresentationSource: NSObject, UIActivityItemSource {
    private let metadata: LPLinkMetadata

    func activityViewControllerLinkMetadata(_ activityViewController: UIActivityViewController) -> LPLinkMetadata? {
        return metadata
    }

    func activityViewControllerPlaceholderItem(_ activityViewController: UIActivityViewController) -> Any {
        guard let url = metadata.originalURL else { return "" }
        return url.absoluteURL
    }

    func activityViewController(_ activityViewController: UIActivityViewController, itemForActivityType activityType: UIActivity.ActivityType?) -> Any? {
        return metadata.originalURL
    }

    init(title: String, shareURL: URL, image: UIImage? = nil) {
        metadata = LPLinkMetadata()
        metadata.iconProvider = NSItemProvider(object: image ?? UIImage.fromAsset(.spy))
        metadata.originalURL = shareURL
        metadata.url = shareURL
        metadata.title = title
    }
}