//
//  XCBActions.swift
//  Tusker
//
//  Created by Shadowfacts on 9/23/18.
//  Copyright © 2018 Shadowfacts. All rights reserved.
//

import UIKit

struct XCBActions {
    // MARK: - Posts
    
    static func postStatus(_ url: XCallbackURL) -> Bool {
        let session = XCBManager.createSession(type: .postStatus, url: url)
        
        let mentioning = url.arguments["mentioning"]
        let text = url.arguments["text"]
        
        func postStatusSilently() {
            var status = ""
            if let mentioning = mentioning { status += mentioning }
            if let text = text { status += text }
            let request = MastodonController.shared.client.createStatus(text: status)
            MastodonController.shared.client.run(request) { response in
                if case let .success(status, _) = response {
                    session.complete(with: .success, additionalData: [
                        "statusURL": status.url?.absoluteString,
                        "statusURI": status.uri
                        ])
                } else if case let .failure(error) = response {
                    session.complete(with: .error, additionalData: [
                        "error": error.localizedDescription
                        ])
                }
            }
        }
        
        func showComposeStatus() {
            let vc = ComposeViewController.create(for: session, mentioning: mentioning, text: text)
            UIApplication.shared.keyWindow!.rootViewController!.present(vc, animated: true)
        }
        
        let silent = Bool(url.arguments["silent"] ?? "false") ?? false
        if silent {
            if let source = url.source {
                let permission = Preferences.shared.silentActions[source] ?? .undecided
                switch permission {
                case .accepted:
                    postStatusSilently()
                case .rejected:
                    showComposeStatus()
                case .undecided:
                    let alert = UIAlertController(title: "\(source) wants to perform actions silently", message: "Accepting will allow \(source) to perform actions without your confirmation, rejecting will always prompt for confirmation.", preferredStyle: .alert)
                    alert.addAction(UIAlertAction(title: "Accept", style: .default, handler: { (_) in
                        Preferences.shared.silentActions[source] = .accepted
                        postStatusSilently()
                    }))
                    alert.addAction(UIAlertAction(title: "Reject", style: .default, handler: { (_) in
                        Preferences.shared.silentActions[source] = .rejected
                        showComposeStatus()
                    }))
                    UIApplication.shared.keyWindow!.rootViewController!.present(alert, animated: true)
                }
            } else {
                session.complete(with: .error, additionalData: ["error": "Cannot perform silent action without source app, x-source parameter must be specified"])
            }
        } else {
            showComposeStatus()
        }
        return true
    }
}