//
//  NCCapabilitiesView.swift
//  Nextcloud
//
//  Created by Marino Faggiana on 19/05/23.
//  Copyright © 2023 Marino Faggiana. All rights reserved.
//

import SwiftUI
import NextcloudKit

@objc class NCHostingCapabilitiesView: NSObject {

    @objc func makeShipDetailsUI() -> UIViewController {

        let capabilitiesStatus = NCCapabilitiesStatus()
        let view = NCCapabilitiesView(capabilitiesStatus: capabilitiesStatus)
        let vc = UIHostingController(rootView: view)
        vc.title = NSLocalizedString("_capabilities_", comment: "")
        return vc
    }
}

class NCCapabilitiesStatus: ObservableObject {

    struct Capability: Identifiable, Hashable {
        let id = UUID()
        let text: String
        let image: UIImage
        let available: Bool
    }

    @Published var capabililies: [Capability] = []
    @Published var json = "Lorem ipsum dolor sit amet. Ea voluptas aperiam aut inventore saepe in tenetur modi\n.Cum sint tempore sed maiores quos aut quaerat deleniti.\nQui beatae quia qui repellat sunt in Quis libero aut quidem porro non explicabo tenetur et natus doloribus non voluptatum consequatur.\n"
    @Published var homeServer = ""

    init(preview: Bool = false) {

        if preview {
            capabililies = [Capability(text: "File sharing", image: UIImage(named: "share")!.resizeImage(size: CGSize(width: 25, height: 25))!, available: true),
                            Capability(text: "Externa site", image: UIImage(systemName: "network")!, available: false)
            ]
            homeServer = "https://cloud.nextcloud.com/remote.php.dav/files/marino/"
        } else {
            guard let activeAccount = NCManageDatabase.shared.getActiveAccount() else { return }
            homeServer = NCUtilityFileSystem.shared.getHomeServer(urlBase: activeAccount.urlBase, userId: activeAccount.userId) + "/"
            getCapabilities(account: activeAccount.account)
            updateCapabilities(account: activeAccount.account)
        }
    }

    func getCapabilities(account: String) {

        NextcloudKit.shared.getCapabilities { account, data, error in
            if error == .success && data != nil {
                NCManageDatabase.shared.addCapabilitiesJSon(data!, account: account)
                let serverVersionMajor = NCManageDatabase.shared.getCapabilitiesServerInt(account: account, elements: NCElementsJSON.shared.capabilitiesVersionMajor)
                if serverVersionMajor >= NCGlobal.shared.nextcloudVersion18 {
                    NextcloudKit.shared.NCTextObtainEditorDetails { account, editors, creators, _, error in
                        if error == .success {
                            NCManageDatabase.shared.addDirectEditing(account: account, editors: editors, creators: creators)
                            self.updateCapabilities(account: account)
                        }
                    }
                } else {
                    self.updateCapabilities(account: account)
                }
            } else {
                self.updateCapabilities(account: account)
            }
        }
    }

    func updateCapabilities(account: String) {

        var available: Bool = false
        capabililies.removeAll()

        self.json = ""

        // File Sharing
        available = NCManageDatabase.shared.getCapabilitiesServerBool(account: account, elements: NCElementsJSON.shared.capabilitiesFileSharingApiEnabled, exists: false)
        capabililies.append(Capability(text: "File sharing", image: UIImage(named: "share")!.resizeImage(size: CGSize(width: 25, height: 25))!, available: available))

        // ExternalSites
        available = NCManageDatabase.shared.getCapabilitiesServerBool(account: account, elements: NCElementsJSON.shared.capabilitiesExternalSitesExists, exists: true)
        capabililies.append(Capability(text: "External site", image: UIImage(systemName: "network")!, available: available))

        // E2EE
        available = NCManageDatabase.shared.getCapabilitiesServerBool(account: account, elements: NCElementsJSON.shared.capabilitiesE2EEEnabled, exists: false)
        capabililies.append(Capability(text: "End-to-End Encryption", image: UIImage(systemName: "lock")!, available: available))

        if NCManageDatabase.shared.getCapabilitiesServerArray(account: account, elements: NCElementsJSON.shared.capabilitiesActivity) == nil {
            available = false
        } else {
            available = true
        }
        capabililies.append(Capability(text: "Activity", image: UIImage(systemName: "bolt")!, available: available))

        if NCManageDatabase.shared.getCapabilitiesServerArray(account: account, elements: NCElementsJSON.shared.capabilitiesNotification) == nil {
            available = false
        } else {
            available = true
        }
        capabililies.append(Capability(text: "Notification", image: UIImage(systemName: "bell")!, available: available))

        available = NCManageDatabase.shared.getCapabilitiesServerBool(account: account, elements: NCElementsJSON.shared.capabilitiesFilesUndelete, exists: false)
        capabililies.append(Capability(text: "Deleted files", image: UIImage(systemName: "trash")!, available: available))

        var textEditor = false
        var onlyofficeEditors = false
        if let editors = NCManageDatabase.shared.getDirectEditingEditors(account: account) {
            for editor in editors {
                if editor.editor == NCGlobal.shared.editorText {
                    textEditor = true
                } else if editor.editor == NCGlobal.shared.editorOnlyoffice {
                    onlyofficeEditors = true
                }
            }
        }
        capabililies.append(Capability(text: "Text", image: UIImage(named: "text")!.resizeImage(size: CGSize(width: 25, height: 25))!, available: textEditor))
        capabililies.append(Capability(text: "ONLYOFFICE", image: UIImage(named: "onlyoffice")!.resizeImage(size: CGSize(width: 25, height: 25))!, available: onlyofficeEditors))

        if NCManageDatabase.shared.getCapabilitiesServerArray(account: account, elements: NCElementsJSON.shared.capabilitiesRichdocumentsMimetypes) == nil {
            available = false
        } else {
            available = true
        }
        capabililies.append(Capability(text: "Collabora", image: UIImage(named: "collabora")!.resizeImage(size: CGSize(width: 25, height: 25))!, available: available))

        available = NCManageDatabase.shared.getCapabilitiesServerBool(account: account, elements: NCElementsJSON.shared.capabilitiesUserStatusEnabled, exists: false)
        capabililies.append(Capability(text: "User Status", image: UIImage(systemName: "moon")!, available: available))

        available = NCManageDatabase.shared.getCapabilitiesServerBool(account: account, elements: NCElementsJSON.shared.capabilitiesFilesComments, exists: false)
        capabililies.append(Capability(text: "Comments", image: UIImage(systemName: "ellipsis.bubble")!, available: available))

        let hasLockCapability = NCManageDatabase.shared.getCapabilitiesServerInt(account: account, elements: NCElementsJSON.shared.capabilitiesFilesLockVersion) >= 1
        if hasLockCapability {
            available = false
        } else {
            available = true
        }
        capabililies.append(Capability(text: "Lock file", image: UIImage(systemName: "lock")!, available: available))

        available = NCManageDatabase.shared.getCapabilitiesServerBool(account: account, elements: NCElementsJSON.shared.capabilitiesGroupfoldersEnabled, exists: false)
        capabililies.append(Capability(text: "Group folders", image: UIImage(systemName: "person.2")!, available: available))

        if let json = NCManageDatabase.shared.getCapabilities(account: account) {
            self.json = json
        }
    }
}

struct NCCapabilitiesView: View {

    @ObservedObject var capabilitiesStatus: NCCapabilitiesStatus

    init(capabilitiesStatus: NCCapabilitiesStatus) {
        self.capabilitiesStatus = capabilitiesStatus
    }

    var body: some View {
        VStack {
            List {
                Section {
                    ForEach(capabilitiesStatus.capabililies, id: \.id) { capability in
                        HStack {
                            Capability(text: capability.text, image: Image(uiImage: capability.image))
                            CapabilityAvailable(available: capability.available)
                        }
                    }
                }
                Section {
                    Capability(text: capabilitiesStatus.homeServer, image: Image(uiImage: UIImage(systemName: "house")!))
                }
                Section {
                    ScrollView(.horizontal) {
                        Text(capabilitiesStatus.json)
                            .font(.system(size: 12))
                    }
                }
            }
        }
        .frame(maxWidth: .infinity, alignment: .top)
    }
}

struct Capability: View {

    @State var text: String = ""
    @State var image: Image

    var body: some View {
        Label {
            Text(text)
                .font(.system(size: 15))
                .foregroundColor(Color(UIColor.systemGray))
        } icon: {
            image
                .renderingMode(.template)
                .foregroundColor(Color(UIColor.systemGray))
        }
        .frame(maxWidth: .infinity, alignment: .leading)
    }
}

struct CapabilityAvailable: View {

    @State var available: Bool

    var body: some View {
        if available {
            Image(systemName: "checkmark.circle.fill")
                .foregroundColor(.green)
        } else {
            Image(systemName: "multiply.circle.fill")
                .foregroundColor(.red)
        }
    }
}

struct NCCapabilitiesView_Previews: PreviewProvider {
    static var previews: some View {
        NCCapabilitiesView(capabilitiesStatus: NCCapabilitiesStatus(preview: true))
    }
}