/*
 * Nextcloud Android client application
 *
 * @author Tobias Kaminsky
 * Copyright (C) 2020 Nextcloud GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
 *
 * You should have received a copy of the GNU Affero General Public
 * License along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package com.nextcloud.ui

import android.accounts.Account
import android.annotation.SuppressLint
import android.app.Dialog
import android.content.Context
import android.os.Bundle
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.view.inputmethod.InputMethodManager
import androidx.annotation.VisibleForTesting
import androidx.emoji.bundled.BundledEmojiCompatConfig
import androidx.emoji.text.EmojiCompat
import androidx.fragment.app.DialogFragment
import androidx.recyclerview.widget.LinearLayoutManager
import com.google.android.material.dialog.MaterialAlertDialogBuilder
import com.google.gson.Gson
import com.google.gson.reflect.TypeToken
import com.nextcloud.client.account.User
import com.nextcloud.client.account.UserAccountManager
import com.nextcloud.client.core.AsyncRunner
import com.nextcloud.client.di.Injectable
import com.nextcloud.client.network.ClientFactory
import com.owncloud.android.R
import com.owncloud.android.datamodel.ArbitraryDataProvider
import com.owncloud.android.lib.common.OwnCloudClientFactory
import com.owncloud.android.lib.resources.users.ClearStatusMessageRemoteOperation
import com.owncloud.android.lib.resources.users.PredefinedStatus
import com.owncloud.android.lib.resources.users.SetPredefinedCustomStatusMessageRemoteOperation
import com.owncloud.android.lib.resources.users.SetStatusRemoteOperation
import com.owncloud.android.lib.resources.users.SetUserDefinedCustomStatusMessageRemoteOperation
import com.owncloud.android.lib.resources.users.Status
import com.owncloud.android.lib.resources.users.StatusType
import com.owncloud.android.ui.activity.BaseActivity
import com.owncloud.android.ui.adapter.PredefinedStatusClickListener
import com.owncloud.android.ui.adapter.PredefinedStatusListAdapter
import com.vanniktech.emoji.EmojiManager
import com.vanniktech.emoji.EmojiPopup
import com.vanniktech.emoji.googlecompat.GoogleCompatEmojiProvider
import kotlinx.android.synthetic.main.dialog_set_status.*
import java.util.ArrayList
import javax.inject.Inject

private const val ARG_CURRENT_USER_PARAM = "currentUser"
private const val ARG_CURRENT_STATUS_PARAM = "currentStatus"

class SetStatusDialogFragment : DialogFragment(),
    PredefinedStatusClickListener,
    Injectable {
    private lateinit var dialogView: View
    private var currentUser: User? = null
    private var currentStatus: Status? = null
    private lateinit var accountManager: UserAccountManager
    private lateinit var predefinedStatus: ArrayList<PredefinedStatus>
    private lateinit var adapter: PredefinedStatusListAdapter
    private var selectedPredefinedMessageId: String? = null
    private lateinit var popup: EmojiPopup

    @Inject
    lateinit var arbitraryDataProvider: ArbitraryDataProvider

    @Inject
    lateinit var asyncRunner: AsyncRunner

    @Inject
    lateinit var clientFactory: ClientFactory

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        arguments?.let {
            currentUser = it.getParcelable(ARG_CURRENT_USER_PARAM)
            currentStatus = it.getParcelable(ARG_CURRENT_STATUS_PARAM)

            val json = arbitraryDataProvider.getValue(currentUser, ArbitraryDataProvider.PREDEFINED_STATUS)

            if (json.isNotEmpty()) {
                val myType = object : TypeToken<ArrayList<PredefinedStatus>>() {}.type
                predefinedStatus = Gson().fromJson(json, myType)
            }
        }

        val config = BundledEmojiCompatConfig(requireContext())
        config.setReplaceAll(true)
        val emojiCompat = EmojiCompat.init(config)

        EmojiManager.install(GoogleCompatEmojiProvider(emojiCompat))
    }

    @SuppressLint("InflateParams")
    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        dialogView = LayoutInflater.from(requireContext()).inflate(R.layout.dialog_set_status, null)
        return MaterialAlertDialogBuilder(requireContext())
            .setView(dialogView)
            .create()
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
        accountManager = (activity as BaseActivity).userAccountManager

        currentStatus?.let {
            emoji.setText(it.icon)
            customStatusInput.text.clear()
            customStatusInput.setText(it.message)
        }

        adapter = PredefinedStatusListAdapter(this, requireContext())
        if (this::predefinedStatus.isInitialized) {
            adapter.list = predefinedStatus
        }
        predefinedStatusList.adapter = adapter
        predefinedStatusList.layoutManager = LinearLayoutManager(context)

        onlineStatus.setOnClickListener { setStatus(StatusType.ONLINE) }
        dndStatus.setOnClickListener { setStatus(StatusType.DND) }
        awayStatus.setOnClickListener { setStatus(StatusType.AWAY) }
        invisibleStatus.setOnClickListener { setStatus(StatusType.INVISIBLE) }

        clearStatus.setOnClickListener { clearStatus() }
        setStatus.setOnClickListener { setStatusMessage() }
        emoji.setOnClickListener { openEmojiPopup() }

        popup = EmojiPopup.Builder
            .fromRootView(view)
            .setOnEmojiClickListener { _, _ ->
                popup.dismiss()
                emoji.clearFocus()
                val imm: InputMethodManager = context?.getSystemService(Context.INPUT_METHOD_SERVICE) as
                    InputMethodManager
                imm.hideSoftInputFromWindow(emoji.windowToken, 0)
            }
            .build(emoji)
        emoji.disableKeyboardInput(popup)
        emoji.forceSingleEmoji()
    }

    private fun openEmojiPopup() {
        popup.show()
    }

    private fun clearStatus() {
        asyncRunner.postQuickTask(ClearStatusTask(accountManager.currentOwnCloudAccount?.savedAccount, context),
            { dismiss(it) })
    }

    private fun setStatus(statusType: StatusType) {
        asyncRunner.postQuickTask(
            SetStatusTask(
                statusType,
                accountManager.currentOwnCloudAccount?.savedAccount,
                context)
        )
    }

    private fun setStatusMessage() {
        if (selectedPredefinedMessageId != null) {
            asyncRunner.postQuickTask(
                SetPredefinedCustomStatusTask(
                    selectedPredefinedMessageId!!,
                    1603719631,
                    accountManager.currentOwnCloudAccount?.savedAccount,
                    context),
                { dismiss(it) }
            )
        } else {
            asyncRunner.postQuickTask(
                SetUserDefinedCustomStatusTask(
                    customStatusInput.text.toString(),
                    emoji.text.toString(),
                    1603719631,
                    accountManager.currentOwnCloudAccount?.savedAccount,
                    context),
                { dismiss(it) }
            )
        }
    }

    private fun dismiss(boolean: Boolean) {
        if (boolean) {
            dismiss()
        }
    }

    private class SetPredefinedCustomStatusTask(val messageId: String,
                                                val clearAt: Long,
                                                val account: Account?,
                                                val context: Context?) : Function0<Boolean> {
        override fun invoke(): Boolean {
            val client = OwnCloudClientFactory.createNextcloudClient(account, context)

            return SetPredefinedCustomStatusMessageRemoteOperation(messageId, clearAt).execute(client).isSuccess
        }
    }

    private class SetUserDefinedCustomStatusTask(val message: String,
                                                 val icon: String,
                                                 val clearAt: Long,
                                                 val account: Account?,
                                                 val context: Context?) : Function0<Boolean> {
        override fun invoke(): Boolean {
            val client = OwnCloudClientFactory.createNextcloudClient(account, context)

            return SetUserDefinedCustomStatusMessageRemoteOperation(message, icon, clearAt).execute(client).isSuccess
        }
    }

    private class SetStatusTask(val statusType: StatusType,
                                val account: Account?,
                                val context: Context?) : Function0<Boolean> {
        override fun invoke(): Boolean {
            val client = OwnCloudClientFactory.createNextcloudClient(account, context)

            return SetStatusRemoteOperation(statusType).execute(client).isSuccess
        }
    }

    private class ClearStatusTask(val account: Account?, val context: Context?) : Function0<Boolean> {
        override fun invoke(): Boolean {
            val client = OwnCloudClientFactory.createNextcloudClient(account, context)

            return ClearStatusMessageRemoteOperation().execute(client).isSuccess
        }
    }

    /**
     * Fragment creator
     */
    companion object {
        @JvmStatic
        fun newInstance(user: User, status: Status?) =
            SetStatusDialogFragment().apply {
                arguments = Bundle().apply {
                    putParcelable(ARG_CURRENT_USER_PARAM, user)
                    putParcelable(ARG_CURRENT_STATUS_PARAM, status)
                }
            }
    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        return dialogView
    }

    override fun onClick(predefinedStatus: PredefinedStatus) {
        selectedPredefinedMessageId = predefinedStatus.id
        emoji.setText(predefinedStatus.icon)
        customStatusInput.text.clear()
        customStatusInput.text.append(predefinedStatus.message)
    }

    @VisibleForTesting
    fun setPredefinedStatus(predefinedStatus: ArrayList<PredefinedStatus>) {
        adapter.list = predefinedStatus
        predefinedStatusList.adapter?.notifyDataSetChanged()
    }
}