/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2012-2014 lacolaco.net
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package net.lacolaco.smileessence.view.page

import android.app.AlertDialog
import android.os.Bundle
import android.text.Spannable
import android.text.TextUtils
import android.text.method.ArrowKeyMovementMethod
import android.view.KeyEvent
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.view.inputmethod.EditorInfo
import android.widget.EditText
import android.widget.ImageButton
import android.widget.ListView
import android.widget.TextView
import com.handmark.pulltorefresh.library.PullToRefreshBase
import com.handmark.pulltorefresh.library.PullToRefreshListView
import net.lacolaco.smileessence.R
import net.lacolaco.smileessence.activity.MainActivity
import net.lacolaco.smileessence.preference.InternalPreferenceHelper
import net.lacolaco.smileessence.twitter.task.Searches
import net.lacolaco.smileessence.util.SystemServiceHelper
import net.lacolaco.smileessence.util.UIHandler
import net.lacolaco.smileessence.view.adapter.TimelineAdapter
import net.lacolaco.smileessence.view.dialog.ConfirmDialogFragment
import twitter4j.Query

import java.util.ArrayList

class SearchFragment : CustomListFragment<TimelineAdapter>(), View.OnClickListener, View.OnLongClickListener, View.OnFocusChangeListener {

    // ------------------------------ FIELDS ------------------------------

    private lateinit var queryString: String
    private var editText: EditText? = null

    // --------------------- GETTER / SETTER METHODS ---------------------

    override val refreshMode: PullToRefreshBase.Mode
        get() = PullToRefreshBase.Mode.BOTH

    // ------------------------ INTERFACE METHODS ------------------------

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

        queryString = InternalPreferenceHelper.instance.get(R.string.key_last_used_search_query, "")
        adapter = TimelineAdapter(activity)

        refresh()
    }

    override fun refresh() { //TODO
        if (!TextUtils.isEmpty(queryString)) {
            startSearch(queryString)
        }
    }

    // --------------------- Interface OnClickListener ---------------------

    override fun onClick(v: View) {
        when (v.id) {
            R.id.button_search_queries -> {
                openSearchQueryDialog()
            }
            R.id.button_search_execute -> {
                search()
            }
            R.id.button_search_save -> {
                saveQuery()
            }
        }
    }

    override fun onLongClick(v: View): Boolean {
        when (v.id) {
            R.id.button_search_save -> {
                val text = editText!!.text.toString()
                for (ss in world.savedSearches.values) {
                    if (ss.query == text) {
                        ConfirmDialogFragment.show(activity, getString(R.string.dialog_confirm_delete_query), {
                            Searches.DestroySavedSearchTask(world.account, ss.id)
                                    .onDoneUI { x ->
                                        world.notify(R.string.notice_search_query_deleted)
                                        world.refreshSavedSearches()
                                    }
                                    .onFailUI { x -> world.notify("unable to delete search query") }
                                    .execute()
                        }, false)
                        break
                    }
                }
                return true
            }
        }
        return false
    }

    // --------------------- Interface OnFocusChangeListener ---------------------

    override fun onFocusChange(v: View, hasFocus: Boolean) {
        if (!hasFocus) {
            SystemServiceHelper.hideIM(activity, editText)
        }
    }

    // --------------------- Interface OnRefreshListener2 ---------------------

    override fun onPullDownToRefresh(refreshView: PullToRefreshBase<ListView>) {
        if (TextUtils.isEmpty(queryString)) {
            UIHandler().post {
                notifyTextEmpty()
                refreshView.onRefreshComplete()
            }
            return
        }
        val query = Query()
        query.query = queryString
        query.count = 200
        query.resultType = Query.RECENT
        if (adapter.count > 0) {
            query.sinceId = adapter.topID
        }
        runRefreshTask(query, {
            updateListViewWithNotice(refreshView.refreshableView, true)
            refreshView.onRefreshComplete()
        })
    }

    override fun onPullUpToRefresh(refreshView: PullToRefreshBase<ListView>) {
        if (TextUtils.isEmpty(queryString)) {
            UIHandler().post {
                notifyTextEmpty()
                refreshView.onRefreshComplete()
            }
            return
        }
        val query = Query()
        query.query = queryString
        query.count = 200
        query.resultType = Query.RECENT
        if (adapter.count > 0) {
            query.maxId = adapter.lastID - 1
        }
        runRefreshTask(query, {
            updateListViewWithNotice(refreshView.refreshableView, false)
            refreshView.onRefreshComplete()
        })
    }

    // ------------------------ OVERRIDE METHODS ------------------------

    override fun getListView(page: View): PullToRefreshListView {
        return page.findViewById(R.id.listview_search) as PullToRefreshListView
    }

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup, savedInstanceState: Bundle?): View {
        val page = inflater.inflate(R.layout.fragment_search, container, false)
        val listView = getListView(page)
        listView.setAdapter(adapter)
        listView.setOnScrollListener(this)
        listView.setOnRefreshListener(this)
        listView.mode = refreshMode
        val buttonQueries = getQueriesButton(page)
        buttonQueries.setOnClickListener(this)
        val buttonExecute = getExecuteButton(page)
        buttonExecute.setOnClickListener(this)
        val buttonSave = getSaveButton(page)
        buttonSave.setOnClickListener(this)
        editText = getEditText(page)
        editText!!.onFocusChangeListener = this
        editText!!.setText(queryString)
        editText!!.setOnEditorActionListener { textView, i, keyEvent ->
            if (i == EditorInfo.IME_ACTION_SEARCH || keyEvent != null &&
                    keyEvent.action == KeyEvent.ACTION_DOWN &&
                    keyEvent.keyCode == KeyEvent.KEYCODE_ENTER) {
                search()
            }
            true
        }
        editText!!.movementMethod = object : ArrowKeyMovementMethod() {
            override fun right(widget: TextView, buffer: Spannable): Boolean {
                //Don't move page
                return widget.selectionEnd == widget.length() || super.right(widget, buffer)
            }

            override fun left(widget: TextView, buffer: Spannable): Boolean {
                //Don't move page
                return widget.selectionStart == 0 || super.left(widget, buffer)
            }
        }
        return page
    }

    private fun getEditText(page: View): EditText {
        return page.findViewById(R.id.edittext_search) as EditText
    }

    private fun getExecuteButton(page: View): ImageButton {
        return page.findViewById(R.id.button_search_execute) as ImageButton
    }

    private fun getQueriesButton(page: View): ImageButton {
        return page.findViewById(R.id.button_search_queries) as ImageButton
    }

    private fun getSaveButton(page: View): ImageButton {
        return page.findViewById(R.id.button_search_save) as ImageButton
    }

    private fun notifyTextEmpty() {
        world.notifyError(R.string.notice_search_text_empty)
    }

    private fun openSearchQueryDialog() {
        val sss = ArrayList(world.savedSearches.values)
        val builder = AlertDialog.Builder(activity)
        builder.setItems(sss.map { it.query }.toTypedArray()) { dialog, which ->
            val ss = sss[which]
            (activity as MainActivity).openSearchPage(ss.query)
        }
        val dialog = builder.create()
        dialog.show()
    }

    private fun saveQuery() {
        val text = editText!!.text.toString()
        if (TextUtils.isEmpty(text)) {
            world.notifyError(R.string.notice_query_is_empty)
        } else {
            Searches.CreateSavedSearchTask(world.account, text).onDoneUI { cb ->
                world.notify(R.string.notice_query_saved)
                world.refreshSavedSearches()
            }.onFailUI { ex -> world.notifyError("Query is not saved") }.execute()
        }
    }

    private fun search() {
        if (editText != null) {
            val text = editText!!.text.toString()
            if (TextUtils.isEmpty(text)) {
                world.notifyError(R.string.notice_query_is_empty)
            } else {
                startSearch(text)
                SystemServiceHelper.hideIM(activity, editText)
            }
        }
    }

    fun startSearch(queryString: String) {
        InternalPreferenceHelper.instance.set(R.string.key_last_used_search_query, queryString)
        if (editText != null)
            editText!!.setText(queryString)
        this.queryString = queryString
        adapter.clear()
        adapter.updateForce()
        if (!TextUtils.isEmpty(queryString)) {
            val query = Query()
            query.query = queryString
            query.count = 200
            query.resultType = Query.RECENT
            runRefreshTask(query) { adapter.updateForce() }
        }
    }

    private fun runRefreshTask(query: Query, onFinish: () -> Unit) {
        Searches.SearchTask(world.account, query)
                .onFail { x -> world.notifyError(R.string.notice_error_search) }
                .onDoneUI { tweets -> adapter.addAll(tweets.filter { t -> !t.isRetweet }) }
                .onFinishUI(onFinish)
                .execute()
    }
}