/**
 * Copyright (c) Microsoft Corporation. All rights reserved.
 * Licensed under the MIT License.
 */
import { Utils } from './Utils'
import * as BB from 'botbuilder'
import * as CLM from '@conversationlearner/models'

export enum DebugType {
    Client = 1 << 0,
    ClientBody = 1 << 1,
    MessageQueue = 1 << 2,
    Memory = 1 << 3,
    MemVerbose = 1 << 4
}

enum LogType {
    Log,
    Error
}

interface LogMessage {
    message: string
    logType: LogType
}

export class CLDebug {
    private static adapter: BB.BotAdapter
    private static conversationReference: Partial<BB.ConversationReference>
    private static cachedMessages: LogMessage[] = []
    public static logToUI: boolean = false  // If set all log messages displayed in chat UI, if false only error messages
    public static verbose: boolean = true
    public static debugType: DebugType = 0

    public static InitLogger(adapter: BB.BotAdapter, conversationReference: Partial<BB.ConversationReference>) {
        CLDebug.adapter = adapter
        CLDebug.conversationReference = conversationReference;
    }

    private static HasDebugType(debugType: DebugType): boolean {
        return (debugType & this.debugType) === debugType
    }
    private static async SendCache() {
        if (CLDebug.adapter && CLDebug.cachedMessages.length > 0) {

            //TODO: Only send when running in UI
            await CLDebug.adapter.continueConversation(CLDebug.conversationReference, async (context) => {
                let cachedMessages = [...this.cachedMessages]
                this.cachedMessages = []

                for (let logMessage of cachedMessages) {
                    if (logMessage.logType === LogType.Error) {
                        // TODO: Create CLM.SenderType.Error to special handle this when clicked
                        const clData: CLM.CLChannelData = { replayError: new CLM.ReplayErrorException(), senderType: CLM.SenderType.Bot, roundIndex: null, scoreIndex: null }
                        await context.sendActivity({ text: logMessage.message, channelData: { clData: clData } })
                    }
                    else {
                        await context.sendActivity(logMessage.message)
                    }
                }
            });
        }
    }

    public static Log(text: string, filter?: DebugType) {
        if (!filter || this.HasDebugType(filter)) {
            console.log(text)

            if (CLDebug.logToUI) {
                CLDebug.cachedMessages.push({ message: text, logType: LogType.Log })
            }
            CLDebug.SendCache()
        }
    }

    public static LogRequest(method: string, path: string, payload: any) {
        if (this.HasDebugType(DebugType.Client)) {

            // Ignore training status messages
            if (path.indexOf('trainingstatus') > 0) {
                return
            }

            let message = `${method} ${path}`

            if (this.HasDebugType(DebugType.ClientBody)) {
                const formattedBody = payload.body ? JSON.stringify(payload.body, null, '  ') : ''
                if (formattedBody.length > 0) {
                    message = `${message}\n\n${formattedBody}`
                }
            }
            console.log(message)

            if (CLDebug.logToUI) {
                CLDebug.cachedMessages.push({ message: message, logType: LogType.Log })
            }
            CLDebug.SendCache()
        }
    }

    public static Error(error: any, context: string = "", sendAsChat: boolean = true): string {
        let text = `ERROR: ${error ? Utils.ErrorString(error, context) : 'No details'}`

        console.log(text)

        if (sendAsChat) {
            CLDebug.cachedMessages.push({ message: text, logType: LogType.Error })
            CLDebug.SendCache()
        }

        return text
    }

    public static Verbose(text: string) {
        if (CLDebug.verbose) {
            CLDebug.Log(`${text}`)
        }
    }

    public static LogObject(obj: any) {
        CLDebug.Log(JSON.stringify(obj))
    }
}