//
//  AppDelegate.swift
//  MastoSearch
//
//  Created by Shadowfacts on 12/10/21.
//

import Cocoa
import UniformTypeIdentifiers
import AuthenticationServices
import Combine
import OSLog
import MastoSearchCore

@main
class AppDelegate: NSObject, NSApplicationDelegate {

    @IBOutlet weak var accountMenu: NSMenu!
    
    func applicationWillFinishLaunching(_ notification: Notification) {
        DatabaseController.shared.initialize()
        
        updateAccountMenu()
    }

    func applicationDidFinishLaunching(_ aNotification: Notification) {
        SyncController.shared.syncStatuses(errorHandler: self.handleSyncError(_:))
    }

    func applicationWillTerminate(_ aNotification: Notification) {
        DatabaseController.shared.close()
    }

    func applicationSupportsSecureRestorableState(_ app: NSApplication) -> Bool {
        return true
    }
    
    private func updateAccountMenu() {
        accountMenu.removeAllItems()
        if let account = LocalData.account {
            let item = accountMenu.addItem(withTitle: "Logged in to \(account.instanceURL.host!)", action: nil, keyEquivalent: "")
            item.isEnabled = false
            accountMenu.addItem(withTitle: "Log out", action: #selector(logOut), keyEquivalent: "")
        } else {
            accountMenu.addItem(withTitle: "Log in...", action: #selector(logIn), keyEquivalent: "")
        }
    }
    
    @IBAction func importFile(_ sender: Any) {
        let panel = NSOpenPanel()
        panel.canChooseFiles = true
        panel.canChooseDirectories = false
        panel.allowsMultipleSelection = false
        panel.allowedContentTypes = [.commaSeparatedText]
        panel.beginSheetModal(for: NSApp.mainWindow!) { (resp) in
            guard resp == .OK else {
                return
            }
            ImportController.shared.importCSV(url: panel.url!)
            SyncController.shared.onSync.send()
            SyncController.shared.syncStatuses(errorHandler: self.handleSyncError(_:))
        }
    }
    
    @objc func logIn() {
        let alert = NSAlert()
        alert.messageText = "Enter instance URL:"
        alert.addButton(withTitle: "OK")
        alert.addButton(withTitle: "Cancel")
        
        let textField = NSTextField(frame: NSRect(x: 0, y: 0, width: 300, height: 24))
        textField.placeholderString = "https://mastodon.social/"
        alert.accessoryView = textField
        
        guard alert.runModal() == .alertFirstButtonReturn,
              let url = URL(string: textField.stringValue) else {
            return
        }
        
        LoginController.shared.logIn(with: url, presentationContextProvider: self) {
            self.updateAccountMenu()
            SyncController.shared.syncStatuses(errorHandler: self.handleSyncError(_:))
        }
    }
    
    @objc func logOut() {
        LocalData.account = nil
        updateAccountMenu()
    }
    
    private func handleSyncError(_ error: APIController.Error) {
        let alert = NSAlert()
        alert.alertStyle = .warning
        alert.messageText = "Error syncing statuses"
        alert.informativeText = error.localizedDescription
        alert.runModal()
    }
    
}

extension AppDelegate: ASWebAuthenticationPresentationContextProviding {
    func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
        return NSApp.keyWindow!
    }
}