package info.nightscout.androidaps.dialogs

import android.os.Bundle
import android.text.Editable
import android.text.TextWatcher
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ArrayAdapter
import com.google.common.base.Joiner
import info.nightscout.androidaps.Constants
import info.nightscout.androidaps.R
import info.nightscout.androidaps.data.ProfileSealed
import info.nightscout.androidaps.database.AppRepository
import info.nightscout.androidaps.database.entities.TemporaryTarget
import info.nightscout.androidaps.database.entities.UserEntry.Action
import info.nightscout.androidaps.database.entities.UserEntry.Sources
import info.nightscout.androidaps.database.entities.ValueWithUnit
import info.nightscout.androidaps.database.transactions.InsertAndCancelCurrentTemporaryTargetTransaction
import info.nightscout.androidaps.databinding.DialogProfileswitchBinding
import info.nightscout.androidaps.extensions.toVisibility
import info.nightscout.androidaps.interfaces.ActivePlugin
import info.nightscout.androidaps.interfaces.Config
import info.nightscout.androidaps.interfaces.Profile
import info.nightscout.androidaps.interfaces.ProfileFunction
import info.nightscout.androidaps.logging.LTag
import info.nightscout.androidaps.logging.UserEntryLogger
import info.nightscout.androidaps.plugins.bus.RxBus
import info.nightscout.androidaps.utils.DefaultValueHelper
import info.nightscout.androidaps.utils.HardLimits
import info.nightscout.androidaps.utils.HtmlHelper
import info.nightscout.androidaps.utils.T
import info.nightscout.androidaps.utils.alertDialogs.OKDialog
import info.nightscout.androidaps.utils.resources.ResourceHelper
import io.reactivex.disposables.CompositeDisposable
import io.reactivex.rxkotlin.plusAssign
import java.text.DecimalFormat
import java.util.*
import java.util.concurrent.TimeUnit
import javax.inject.Inject
import kotlin.collections.ArrayList

class ProfileSwitchDialog : DialogFragmentWithDate() {

    @Inject lateinit var rh: ResourceHelper
    @Inject lateinit var profileFunction: ProfileFunction
    @Inject lateinit var activePlugin: ActivePlugin
    @Inject lateinit var repository: AppRepository
    @Inject lateinit var uel: UserEntryLogger
    @Inject lateinit var config: Config
    @Inject lateinit var hardLimits: HardLimits
    @Inject lateinit var rxBus: RxBus
    @Inject lateinit var defaultValueHelper: DefaultValueHelper

    private var profileIndex: Int? = null

    private val disposable = CompositeDisposable()

    private var _binding: DialogProfileswitchBinding? = null

    // This property is only valid between onCreateView and
    // onDestroyView.
    private val binding get() = _binding!!

    private val textWatcher: TextWatcher = object : TextWatcher {
        override fun afterTextChanged(s: Editable) {
            val isDuration = binding.duration.value > 0
            val isLowerPercentage = binding.percentage.value < 100
            binding.ttLayout.visibility = (isDuration && isLowerPercentage).toVisibility()
        }

        override fun beforeTextChanged(s: CharSequence, start: Int, count: Int, after: Int) {}
        override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {}
    }

    override fun onSaveInstanceState(savedInstanceState: Bundle) {
        super.onSaveInstanceState(savedInstanceState)
        savedInstanceState.putDouble("duration", binding.duration.value)
        savedInstanceState.putDouble("percentage", binding.percentage.value)
        savedInstanceState.putDouble("timeshift", binding.timeshift.value)
    }

    override fun onCreateView(
        inflater: LayoutInflater, container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View {
        onCreateViewGeneral()
        arguments?.let { bundle ->
            profileIndex = bundle.getInt("profileIndex", 0)
        }
        _binding = DialogProfileswitchBinding.inflate(inflater, container, false)
        return binding.root
    }

    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        binding.duration.setParams(
            savedInstanceState?.getDouble("duration")
                ?: 0.0, 0.0, Constants.MAX_PROFILE_SWITCH_DURATION, 10.0, DecimalFormat("0"), false, binding.okcancel.ok,
            textWatcher
        )
        binding.percentage.setParams(
            savedInstanceState?.getDouble("percentage")
                ?: 100.0, Constants.CPP_MIN_PERCENTAGE.toDouble(), Constants.CPP_MAX_PERCENTAGE.toDouble(), 5.0,
            DecimalFormat("0"), false, binding.okcancel.ok, textWatcher
        )
        binding.timeshift.setParams(
            savedInstanceState?.getDouble("timeshift")
                ?: 0.0, Constants.CPP_MIN_TIMESHIFT.toDouble(), Constants.CPP_MAX_TIMESHIFT.toDouble(), 1.0, DecimalFormat("0"), false, binding.okcancel.ok
        )

        // profile
        context?.let { context ->
            val profileStore = activePlugin.activeProfileSource.profile
                ?: return
            val profileListToCheck = profileStore.getProfileList()
            val profileList = ArrayList<CharSequence>()
            for (profileName in profileListToCheck) {
                val profileToCheck = activePlugin.activeProfileSource.profile?.getSpecificProfile(profileName.toString())
                if (profileToCheck != null && ProfileSealed.Pure(profileToCheck).isValid("ProfileSwitch", activePlugin.activePump, config, rh, rxBus, hardLimits, false).isValid)
                    profileList.add(profileName)
            }
            if (profileList.isEmpty()) {
                dismiss()
                return
            }
            val adapter = ArrayAdapter(context, R.layout.spinner_centered, profileList)
            binding.profile.adapter = adapter
            // set selected to actual profile
            if (profileIndex != null)
                binding.profile.setSelection(profileIndex as Int)
            else
                for (p in profileList.indices)
                    if (profileList[p] == profileFunction.getOriginalProfileName())
                        binding.profile.setSelection(p)
        }

        profileFunction.getProfile()?.let { profile ->
            if (profile is ProfileSealed.EPS)
                if (profile.value.originalPercentage != 100 || profile.value.originalTimeshift != 0L) {
                    binding.reuselayout.visibility = View.VISIBLE
                    binding.reusebutton.text = rh.gs(R.string.reuse_profile_pct_hours, profile.value.originalPercentage, T.msecs(profile.value.originalTimeshift).hours().toInt())
                    binding.reusebutton.setOnClickListener {
                        binding.percentage.value = profile.value.originalPercentage.toDouble()
                        binding.timeshift.value = profile.value.originalTimeshift.toDouble()
                    }
                }
        }
        binding.ttLayout.visibility = View.GONE
    }

    override fun onDestroyView() {
        super.onDestroyView()
        disposable.clear()
        _binding = null
    }

    override fun submit(): Boolean {
        if (_binding == null) return false
        val profileStore = activePlugin.activeProfileSource.profile
            ?: return false

        val actions: LinkedList<String> = LinkedList()
        val duration = binding.duration.value?.toInt() ?: return false
        if (duration > 0L)
            actions.add(rh.gs(R.string.duration) + ": " + rh.gs(R.string.format_mins, duration))
        val profileName = binding.profile.selectedItem.toString()
        actions.add(rh.gs(R.string.profile) + ": " + profileName)
        val percent = binding.percentage.value.toInt()
        if (percent != 100)
            actions.add(rh.gs(R.string.percent) + ": " + percent + "%")
        val timeShift = binding.timeshift.value.toInt()
        if (timeShift != 0)
            actions.add(rh.gs(R.string.careportal_newnstreatment_timeshift_label) + ": " + rh.gs(R.string.format_hours, timeShift.toDouble()))
        val notes = binding.notesLayout.notes.text.toString()
        if (notes.isNotEmpty())
            actions.add(rh.gs(R.string.notes_label) + ": " + notes)
        if (eventTimeChanged)
            actions.add(rh.gs(R.string.time) + ": " + dateUtil.dateAndTimeString(eventTime))

        val isTT = binding.duration.value > 0 && binding.percentage.value < 100 && binding.tt.isChecked
        val target = defaultValueHelper.determineActivityTT()
        val units = profileFunction.getUnits()
        if (isTT)
            actions.add(rh.gs(R.string.careportal_temporarytarget) + ": " + rh.gs(R.string.activity))

        activity?.let { activity ->
            val ps = profileFunction.buildProfileSwitch(profileStore, profileName, duration, percent, timeShift, eventTime) ?: return@let
            val validity = ProfileSealed.PS(ps).isValid(rh.gs(R.string.careportal_profileswitch), activePlugin.activePump, config, rh, rxBus, hardLimits, false)
            if (validity.isValid)
                OKDialog.showConfirmation(activity, rh.gs(R.string.careportal_profileswitch), HtmlHelper.fromHtml(Joiner.on("<br/>").join(actions)), {
                    if (profileFunction.createProfileSwitch(
                            profileStore,
                            profileName = profileName,
                            durationInMinutes = duration,
                            percentage = percent,
                            timeShiftInHours = timeShift,
                            timestamp = eventTime
                        )
                    ) {
                        uel.log(Action.PROFILE_SWITCH,
                                Sources.ProfileSwitchDialog,
                                notes,
                                ValueWithUnit.Timestamp(eventTime).takeIf { eventTimeChanged },
                                ValueWithUnit.SimpleString(profileName),
                                ValueWithUnit.Percent(percent),
                                ValueWithUnit.Hour(timeShift).takeIf { timeShift != 0 },
                                ValueWithUnit.Minute(duration).takeIf { duration != 0 })
                        if (percent == 90 && duration == 10) sp.putBoolean(R.string.key_objectiveuseprofileswitch, true)
                        if (isTT) {
                            disposable += repository.runTransactionForResult(
                                InsertAndCancelCurrentTemporaryTargetTransaction(
                                    timestamp = eventTime,
                                    duration = TimeUnit.MINUTES.toMillis(duration.toLong()),
                                    reason = TemporaryTarget.Reason.ACTIVITY,
                                    lowTarget = Profile.toMgdl(target, profileFunction.getUnits()),
                                    highTarget = Profile.toMgdl(target, profileFunction.getUnits())
                                )
                            ).subscribe({ result ->
                                            result.inserted.forEach { aapsLogger.debug(LTag.DATABASE, "Inserted temp target $it") }
                                            result.updated.forEach { aapsLogger.debug(LTag.DATABASE, "Updated temp target $it") }
                                        }, {
                                            aapsLogger.error(LTag.DATABASE, "Error while saving temporary target", it)
                                        })
                            uel.log(
                                Action.TT, Sources.TTDialog, ValueWithUnit.Timestamp(eventTime).takeIf { eventTimeChanged }, ValueWithUnit.TherapyEventTTReason(
                                    TemporaryTarget.Reason.ACTIVITY
                                ), ValueWithUnit.fromGlucoseUnit(target, units.asText), ValueWithUnit.Minute(duration)
                            )
                        }
                    }
                })
            else {
                OKDialog.show(
                    activity,
                    rh.gs(R.string.careportal_profileswitch),
                    HtmlHelper.fromHtml(Joiner.on("<br/>").join(validity.reasons))
                )
                return false
            }
        }
        return true
    }
}