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/*
 * 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

import android.app.Activity
import android.content.Intent
import android.net.Uri
import android.os.Bundle
import android.text.TextUtils
import android.widget.Toast
import net.lacolaco.smileessence.activity.MainActivity
import net.lacolaco.smileessence.command.CommandOpenUserDetail
import net.lacolaco.smileessence.entity.Tweet
import net.lacolaco.smileessence.logging.Logger
import net.lacolaco.smileessence.util.UIHandler
import net.lacolaco.smileessence.view.DialogHelper
import net.lacolaco.smileessence.view.dialog.StatusDetailDialogFragment

import java.util.regex.Matcher
import java.util.regex.Pattern

object IntentRouter {

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

    private val TWITTER_HOST = "twitter.com"
    private val TWITTER_STATUS_PATTERN = Pattern.compile("\\A(?:/#!)?/(?:\\w{1,15})/status(?:es)?/(\\d+)\\z", Pattern.CASE_INSENSITIVE)
    private val TWITTER_USER_PATTERN = Pattern.compile("\\A(?:/#!)?/(\\w{1,15})/?\\z", Pattern.CASE_INSENSITIVE)
    private val TWITTER_POST_PATTERN = Pattern.compile("\\A/(intent/tweet|share)\\z", Pattern.CASE_INSENSITIVE)

    // -------------------------- STATIC METHODS --------------------------

    fun onNewIntent(activity: MainActivity, intent: Intent) {
        Logger.debug("onNewIntent")
        val uri = intent.data
        if (uri != null) {
            onUriIntent(activity, uri)
        } else if (intent.action != null) {
            when (intent.action) {
                Intent.ACTION_SEND -> {
                    if ("text/plain" == intent.type) {
                        val extra = intent.extras
                        if (extra != null) {
                            val text = getText(extra)
                            openPostPage(activity, text)
                        }
                    } else if (intent.type.startsWith("image/")) {
                        val imageUri = intent.getParcelableExtra<Uri>(Intent.EXTRA_STREAM)
                        openPostPageWithImage(activity, imageUri)
                    }
                }
            }
        }
    }

    private fun onUriIntent(activity: MainActivity, uri: Uri) {
        Logger.debug(uri.toString())

        if (uri.host == TWITTER_HOST) {
            val postMatcher = TWITTER_POST_PATTERN.matcher(uri.path) // /share and /intent/tweet: don't accept status parameter
            if (postMatcher.find()) {
                openPostPage(activity, extractText(uri))
                return
            }
            val statusMatcher = TWITTER_STATUS_PATTERN.matcher(uri.path)
            if (statusMatcher.find()) {
                showStatusDialog(activity, java.lang.Long.parseLong(statusMatcher.group(1)))
                return
            }
            val userMatcher = TWITTER_USER_PATTERN.matcher(uri.path)
            if (userMatcher.find()) {
                showUserDialog(activity, userMatcher.group(1))
            }
        }
    }

    private fun getText(extra: Bundle): String {
        val builder = StringBuilder()
        if (!TextUtils.isEmpty(extra.getCharSequence(Intent.EXTRA_SUBJECT))) {
            builder.append(extra.getCharSequence(Intent.EXTRA_SUBJECT)).append(" ")
        }
        builder.append(extra.getCharSequence(Intent.EXTRA_TEXT))
        return builder.toString()
    }

    private fun extractText(uri: Uri): String {
        var result = ""
        val text = uri.getQueryParameter("text")
        val url = uri.getQueryParameter("url")
        val via = uri.getQueryParameter("via")
        val hashtags = uri.getQueryParameter("hashtags")

        if (!TextUtils.isEmpty(text)) result += text
        if (!TextUtils.isEmpty(url)) result += " " + url
        if (!TextUtils.isEmpty(hashtags)) result += " " + hashtags.trim { it <= ' ' }.replace(",".toRegex(), " #")
        if (!TextUtils.isEmpty(via)) result += " via @" + via

        return result
    }

    private fun showStatusDialog(activity: Activity, id: Long) {
        Tweet.fetchTask(id, Application.currentWorld!!.account)
                .onDoneUI { tweet -> DialogHelper.showDialog(activity, StatusDetailDialogFragment.newInstance(tweet)) }
                .onFail { x -> Application.toast(R.string.error_intent_status_cannot_load) }
                .execute()
    }

    private fun showUserDialog(activity: MainActivity, screenName: String) {
        val openUserDetail = CommandOpenUserDetail(activity, screenName)
        openUserDetail.execute()
    }

    private fun openPostPage(activity: MainActivity, str: String) {
        UIHandler().post { activity.world.postState.beginTransaction().setText(str).commitWithOpen(activity) }
    }

    private fun openPostPageWithImage(activity: MainActivity, imageUri: Uri) {
        UIHandler().post { activity.openPostPageWithImage(imageUri) }
    }
}