//
/*
 * Copyright (c) 2021 BWI GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import Foundation
import MatomoTracker

@objcMembers class BWIAnalytics : NSObject {
    static let sharedTracker = BWIAnalytics()
    
    public var running: Bool {
        get {
            guard let session = session else {
                return false
            }
            
            return BWIAnalyticsAccountDataService(mxSession: session).isEnabled()
        }
        set(enabled) {
            guard let session = session else {
                return
            }
            BWIAnalyticsAccountDataService(mxSession: session).setEnabled(enabled)
        }
    }
    
    private let matomo: MatomoTracker?
    private let appName: String
    private let appVersion: String
    private let appPlattform = "iOS"
    
    var session: MXSession? = nil
    
    private override init() {
        if !BWIBuildSettings.shared.secondaryAppName.isEmpty {
            appName = BWIBuildSettings.shared.secondaryAppName
        } else {
            appName = Bundle.main.object(forInfoDictionaryKey: "CFBundleDisplayName") as! String
        }
        appVersion = AppDelegate.theDelegate().appVersion
        
        if BWIBuildSettings.shared.bwiEnableErrorTracking {
            guard let url = URL(string: AppConfigService.shared.analyticsUrl()) else {
                matomo = nil
                return
            }
            
            matomo = MatomoTracker.init(siteId: BWIBuildSettings.shared.bwiAnalyticsAppId, baseURL:url, userAgent: nil)
            
            matomo?.isOptedOut = false
            
            matomo?.logger = DefaultLogger(minLevel: .verbose)
            
            matomo?.setCustomVariable(withIndex: 1, name: "App Platform", value: appPlattform)
            matomo?.setCustomVariable(withIndex: 2, name: "App Version", value: appVersion)
        } else {
            matomo = nil
        }
    }
    
    func isEnabled() -> Bool {
        return matomo != nil
    }
    
    func needsToShowPromt() -> Bool {
        if !BWIBuildSettings.shared.bwiEnableErrorTracking {
            return false
        }
        
        guard let session = session else {
            return false
        }
        
        return !BWIAccountNotificationService(mxSession: session).isNotificationShown(BWIAccountNotificationService.AccountNotifications.CodingKeys.analyticsPromt.rawValue)
    }
    
    func setPromtShown(_ shown: Bool) {
        guard let session = session else {
            return
        }
        
        BWIAccountNotificationService(mxSession: session).setNotification(BWIAccountNotificationService.AccountNotifications.CodingKeys.analyticsPromt.rawValue, shown: shown)
    }
    
    func trackScreen(_ screenName: String) {
        if running {
            matomo?.track(view: ["ios", appName, appVersion, screenName], url: nil)
        }
    }
    
    func trackEvent(_ category: String, action: String) {
        if running {
            matomo?.track(eventWithCategory: category, action: action, url:nil)
        }
    }
    
    func trackBwiDuration(_ duration: TimeInterval, _ category: String, _ name: String) {
        if running {
            matomo?.track(eventWithCategory: "Metrics", action: category, name: name, number: NSNumber(value: duration), url:nil)
        }
    }
    
    func trackBwiValue(_ value: NSNumber, _ category: String, _ action: String) {
        if running {
            matomo?.track(eventWithCategory: category, action: action, name: nil, number: value, url:nil)
        }
    }
    
    func trackBwiValue(_ value: NSNumber, _ category: String, _ action: String, _ name: String) {
        if running {
            matomo?.track(eventWithCategory: category, action: action, name: name, number: value, url:nil)
        }
    }
}

extension BWIAnalytics : MXAnalyticsDelegate {
    func trackJoinedRoom(asDM isDM: Bool, isSpace: Bool, memberCount: UInt) {
        // dont track NV specific logs
    }
    
    func trackValue(_ value: NSNumber, category: String, name: String) {
        // dont track NV specific logs
    }
    
    func trackDuration(_ milliseconds: Int, name: MXTaskProfileName, units: UInt) {
        // dont track NV specific logs
    }
    
    func startDurationTracking(forName name: String, operation: String) -> StopDurationTracking {
        return {}
    }
    
    func trackCreatedRoom(asDM isDM: Bool) {
        // dont track NV specific logs
    }
    
    func trackCallStarted(withVideo isVideo: Bool, numberOfParticipants: Int, incoming isIncoming: Bool) {
        // dont track NV specific logs
    }
    
    func trackCallEnded(withDuration duration: Int, video isVideo: Bool, numberOfParticipants: Int, incoming isIncoming: Bool) {
        // dont track NV specific logs
    }
    func trackCallError(with reason: __MXCallHangupReason, video isVideo: Bool, numberOfParticipants: Int, incoming isIncoming: Bool) {
        // dont track NV specific logs
    }
    
    func trackJoinedRoom(asDM isDM: Bool, memberCount: UInt) {
        // dont track NV specific logs
    }
    
    func trackContactsAccessGranted(_ granted: Bool) {
        // dont track NV specific logs
    }
    
    func trackBwiSDKValue(_ value: NSNumber, category: String, action: String) {
        self.trackBwiValue(value, category, action)
    }
    
    func trackBwiSDKValue(_ value: NSNumber, category: String, action: String, name: String) {
        self.trackBwiValue(value, category, action, name);
    }
    
    func trackBwiEvent(_ category: String, action: String) {
        self.trackEvent(category, action: action)
    }
    
    func trackComposerEvent(inThread: Bool, isEditing: Bool, isReply: Bool, startsThread: Bool) {
        // dont track NV specific logs
    }
    
    func trackNonFatalIssue(_ issue: String, details: [String : Any]?) {
        // dont track NV specific logs
    }
}