package org.mariotaku.twidere.fragment.filter

import android.annotation.SuppressLint
import android.app.Activity
import android.app.Dialog
import android.content.Context
import android.content.DialogInterface
import android.content.Intent
import android.database.Cursor
import android.os.Bundle
import android.support.v4.app.DialogFragment
import android.support.v4.app.LoaderManager
import android.support.v4.content.CursorLoader
import android.support.v4.content.Loader
import android.support.v4.widget.SimpleCursorAdapter
import android.support.v7.app.AlertDialog
import android.view.*
import android.widget.AbsListView
import android.widget.ListView
import android.widget.TextView
import com.rengwuxian.materialedittext.MaterialEditText
import kotlinx.android.synthetic.main.layout_list_with_empty_view.*
import okhttp3.HttpUrl
import org.mariotaku.abstask.library.TaskStarter
import org.mariotaku.ktextension.*
import org.mariotaku.library.objectcursor.ObjectCursor
import org.mariotaku.sqliteqb.library.Expression
import org.mariotaku.twidere.R
import org.mariotaku.twidere.TwidereConstants.REQUEST_PURCHASE_EXTRA_FEATURES
import org.mariotaku.twidere.constant.IntentConstants.EXTRA_ACTION
import org.mariotaku.twidere.constant.IntentConstants.INTENT_PACKAGE_PREFIX
import org.mariotaku.twidere.extension.*
import org.mariotaku.twidere.extension.model.getComponentLabel
import org.mariotaku.twidere.extension.model.instantiateComponent
import org.mariotaku.twidere.extension.model.setupUrl
import org.mariotaku.twidere.fragment.BaseDialogFragment
import org.mariotaku.twidere.fragment.BaseFragment
import org.mariotaku.twidere.fragment.ExtraFeaturesIntroductionDialogFragment
import org.mariotaku.twidere.fragment.ProgressDialogFragment
import org.mariotaku.twidere.model.FiltersSubscription
import org.mariotaku.twidere.model.analyzer.PurchaseFinished
import org.mariotaku.twidere.provider.TwidereDataStore.Filters
import org.mariotaku.twidere.task.filter.RefreshFiltersSubscriptionsTask
import org.mariotaku.twidere.util.Analyzer
import org.mariotaku.twidere.util.content.ContentResolverUtils
import org.mariotaku.twidere.util.premium.ExtraFeaturesService
import org.mariotaku.twidere.util.view.SimpleTextWatcher
import java.lang.ref.WeakReference


/**
 * Created by mariotaku on 2016/12/31.
 */
class FiltersSubscriptionsFragment : BaseFragment(), LoaderManager.LoaderCallbacks<Cursor>,
        AbsListView.MultiChoiceModeListener {

    private lateinit var adapter: FilterSubscriptionsAdapter
    private var actionMode: ActionMode? = null

    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceState)
        setHasOptionsMenu(true)

        adapter = FilterSubscriptionsAdapter(context)
        listView.adapter = adapter
        listView.choiceMode = ListView.CHOICE_MODE_MULTIPLE_MODAL
        listView.setMultiChoiceModeListener(this)

        listContainer.visibility = View.GONE
        progressContainer.visibility = View.VISIBLE
        loaderManager.initLoader(0, null, this)


        if (!extraFeaturesService.isSupported()) {
            activity?.finish()
            return
        }

        if (savedInstanceState == null) {
            when (arguments?.getString(EXTRA_ACTION)) {
                ACTION_ADD_URL_SUBSCRIPTION -> {
                    if (!extraFeaturesService.isEnabled(ExtraFeaturesService.FEATURE_FILTERS_SUBSCRIPTION)) {
                        val df = ExtraFeaturesIntroductionDialogFragment.show(childFragmentManager,
                                ExtraFeaturesService.FEATURE_FILTERS_SUBSCRIPTION)
                        df.setTargetFragment(this, REQUEST_ADD_URL_SUBSCRIPTION_PURCHASE)
                    } else {
                        showAddUrlSubscription()
                    }
                }
                else -> {
                    if (!extraFeaturesService.isEnabled(ExtraFeaturesService.FEATURE_FILTERS_SUBSCRIPTION)) {
                        val df = ExtraFeaturesIntroductionDialogFragment.show(childFragmentManager,
                                ExtraFeaturesService.FEATURE_FILTERS_SUBSCRIPTION)
                        df.setTargetFragment(this, REQUEST_PURCHASE_EXTRA_FEATURES)
                    }
                }
            }
        }
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        when (requestCode) {
            REQUEST_ADD_URL_SUBSCRIPTION_PURCHASE -> {
                if (resultCode == Activity.RESULT_OK) {
                    Analyzer.log(PurchaseFinished.create(data!!))
                    executeAfterFragmentResumed { fragment ->
                        (fragment as FiltersSubscriptionsFragment).showAddUrlSubscription()
                    }
                } else {
                    activity?.finish()
                }
            }
            REQUEST_PURCHASE_EXTRA_FEATURES -> {
                if (resultCode == Activity.RESULT_OK) {
                    Analyzer.log(PurchaseFinished.create(data!!))
                } else {
                    activity?.finish()
                }
            }
        }
    }

    override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
        inflater.inflate(R.menu.menu_filters_subscriptions, menu)
    }

    override fun onOptionsItemSelected(item: MenuItem): Boolean {
        when (item.itemId) {
            R.id.add -> {
                val df = AddUrlSubscriptionDialogFragment()
                df.show(fragmentManager, "add_url_subscription")
                return true
            }
            R.id.refresh -> {
                executeAfterFragmentResumed { fragment ->
                    ProgressDialogFragment.show(fragment.childFragmentManager, FRAGMENT_TAG_RREFRESH_FILTERS)
                    val task = RefreshFiltersSubscriptionsTask(fragment.context)
                    val fragmentRef = WeakReference(fragment)
                    task.callback = {
                        fragmentRef.get()?.executeAfterFragmentResumed { fragment ->
                            val df = fragment.childFragmentManager.findFragmentByTag(FRAGMENT_TAG_RREFRESH_FILTERS) as? DialogFragment
                            df?.dismiss()
                        }
                    }
                    TaskStarter.execute(task)
                }
                return true
            }
            else -> return false
        }
    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        return inflater.inflate(R.layout.layout_list_with_empty_view, container, false)
    }

    override fun onCreateLoader(id: Int, args: Bundle?): Loader<Cursor> {
        val loader = CursorLoader(context)
        loader.uri = Filters.Subscriptions.CONTENT_URI
        loader.projection = Filters.Subscriptions.COLUMNS
        return loader
    }

    override fun onLoaderReset(loader: Loader<Cursor>) {
        adapter.changeCursor(null)
    }

    override fun onLoadFinished(loader: Loader<Cursor>, cursor: Cursor) {
        adapter.changeCursor(cursor)
        if (cursor.isEmpty) {
            listView.visibility = View.GONE
            emptyView.visibility = View.VISIBLE
            emptyIcon.setImageResource(R.drawable.ic_info_info_generic)
            emptyText.setText(R.string.hint_empty_filters_subscriptions)
        } else {
            listView.visibility = View.VISIBLE
            emptyView.visibility = View.GONE
        }
        listContainer.visibility = View.VISIBLE
        progressContainer.visibility = View.GONE
    }

    override fun onItemCheckedStateChanged(mode: ActionMode?, position: Int, id: Long, checked: Boolean) {

    }


    override fun onCreateActionMode(mode: ActionMode, menu: Menu): Boolean {
        actionMode = mode
        mode.menuInflater.inflate(R.menu.action_multi_select_items, menu)
        menu.setGroupAvailability(R.id.selection_group, true)
        return true
    }

    override fun onPrepareActionMode(mode: ActionMode, menu: Menu): Boolean {
        listView.updateSelectionItems(menu)
        return true
    }

    override fun onActionItemClicked(mode: ActionMode, item: MenuItem): Boolean {
        when (item.itemId) {
            R.id.delete -> {
                performDeletion()
                mode.finish()
            }
            R.id.select_all -> {
                listView.selectAll()
            }
            R.id.select_none -> {
                listView.selectNone()
            }
            R.id.invert_selection -> {
                listView.invertSelection()
            }
        }
        return true
    }

    override fun onDestroyActionMode(mode: ActionMode) {
        actionMode = null
    }

    @SuppressLint("Recycle")
    private fun performDeletion() {
        val ids = listView.checkedItemIds
        val resolver = context.contentResolver
        val where = Expression.inArgs(Filters.Subscriptions._ID, ids.size).sql
        val whereArgs = ids.toStringArray()
        resolver.query(Filters.Subscriptions.CONTENT_URI, Filters.Subscriptions.COLUMNS, where,
                whereArgs, null)?.useCursor { cursor ->
            val indices = ObjectCursor.indicesFrom(cursor, FiltersSubscription::class.java)
            cursor.moveToFirst()
            while (!cursor.isAfterLast) {
                val subscription = indices.newObject(cursor)
                subscription.instantiateComponent(context)?.deleteLocalData()
                cursor.moveToNext()
            }
        }
        ContentResolverUtils.bulkDelete(resolver, Filters.Subscriptions.CONTENT_URI, Filters._ID,
                false, ids, null, null)
        ContentResolverUtils.bulkDelete(resolver, Filters.Users.CONTENT_URI, Filters.Users.SOURCE,
                false, ids, null, null)
        ContentResolverUtils.bulkDelete(resolver, Filters.Keywords.CONTENT_URI, Filters.Keywords.SOURCE,
                false, ids, null, null)
        ContentResolverUtils.bulkDelete(resolver, Filters.Sources.CONTENT_URI, Filters.Sources.SOURCE,
                false, ids, null, null)
        ContentResolverUtils.bulkDelete(resolver, Filters.Links.CONTENT_URI, Filters.Links.SOURCE,
                false, ids, null, null)
    }

    private fun showAddUrlSubscription() {
        val df = AddUrlSubscriptionDialogFragment()
        df.arguments = Bundle {
            this[EXTRA_ADD_SUBSCRIPTION_URL] = arguments?.getString(EXTRA_ADD_SUBSCRIPTION_URL)
            this[EXTRA_ADD_SUBSCRIPTION_NAME] = arguments?.getString(EXTRA_ADD_SUBSCRIPTION_NAME)
        }
        df.show(fragmentManager, "add_url_subscription")
    }

    class FilterSubscriptionsAdapter(context: Context) : SimpleCursorAdapter(context,
            R.layout.list_item_two_line, null, arrayOf(Filters.Subscriptions.NAME),
            intArrayOf(android.R.id.text1), 0) {
        private var indices: ObjectCursor.CursorIndices<FiltersSubscription>? = null
        private var tempObject: FiltersSubscription = FiltersSubscription()

        override fun swapCursor(c: Cursor?): Cursor? {
            indices = c?.let { ObjectCursor.indicesFrom(it, FiltersSubscription::class.java) }
            return super.swapCursor(c)
        }

        override fun bindView(view: View, context: Context, cursor: Cursor) {
            super.bindView(view, context, cursor)
            val indices = this.indices!!
            val iconView = view.findViewById(android.R.id.icon)
            val summaryView = view.findViewById(android.R.id.text2) as TextView

            indices.parseFields(tempObject, cursor)

            iconView.visibility = View.GONE
            summaryView.text = tempObject.getComponentLabel(context)
        }
    }

    class AddUrlSubscriptionDialogFragment : BaseDialogFragment() {
        override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
            val builder = AlertDialog.Builder(context)
            builder.setView(R.layout.dialog_add_filters_subscription)
            builder.setPositiveButton(R.string.action_add_filters_subscription) { dialog, which ->
                dialog as AlertDialog
                val editName = dialog.findViewById(R.id.name) as MaterialEditText
                val editUrl = dialog.findViewById(R.id.url) as MaterialEditText
                val subscription = FiltersSubscription()
                subscription.name = editName.text.toString()
                subscription.setupUrl(editUrl.text.toString())
                val component = subscription.instantiateComponent(context) ?: return@setPositiveButton
                component.firstAdded()
                val vc = ObjectCursor.valuesCreatorFrom(FiltersSubscription::class.java)
                context.contentResolver.insert(Filters.Subscriptions.CONTENT_URI, vc.create(subscription))
            }
            builder.setNegativeButton(android.R.string.cancel, null)
            val dialog = builder.create()
            dialog.setOnShowListener {
                it as AlertDialog
                it.applyTheme()
                val editName = it.findViewById(R.id.name) as MaterialEditText
                val editUrl = it.findViewById(R.id.url) as MaterialEditText
                val positiveButton = it.getButton(DialogInterface.BUTTON_POSITIVE)

                fun updateEnableState() {
                    val nameValid = !editName.empty
                    val urlValid = HttpUrl.parse(editUrl.text.toString()) != null
                    positiveButton.isEnabled = nameValid && urlValid
                }

                val watcher = object : SimpleTextWatcher {
                    override fun onTextChanged(s: CharSequence, start: Int, before: Int, count: Int) {
                        updateEnableState()
                    }
                }
                editName.addTextChangedListener(watcher)
                editUrl.addTextChangedListener(watcher)

                val args = arguments
                if (savedInstanceState == null && args != null) {
                    editName.setText(args.getString(EXTRA_ADD_SUBSCRIPTION_NAME))
                    editUrl.setText(args.getString(EXTRA_ADD_SUBSCRIPTION_URL))
                }

                updateEnableState()
            }
            return dialog
        }
    }

    companion object {
        const val ACTION_ADD_URL_SUBSCRIPTION = "${INTENT_PACKAGE_PREFIX}ADD_URL_FILTERS_SUBSCRIPTION"
        const val REQUEST_ADD_URL_SUBSCRIPTION_PURCHASE = 101
        const val EXTRA_ADD_SUBSCRIPTION_URL = "add_subscription.url"
        const val EXTRA_ADD_SUBSCRIPTION_NAME = "add_subscription.name"
        private const val FRAGMENT_TAG_RREFRESH_FILTERS = "refresh_filters"
    }
}