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/*
 * Copyright 2020 Allan Wang
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.pitchedapps.frost.facebook.parsers

import com.pitchedapps.frost.R
import com.pitchedapps.frost.facebook.FB_URL_BASE
import org.jsoup.nodes.Document

object BadgeParser : FrostParser<FrostBadges> by BadgeParserImpl()

data class FrostBadges(
    val feed: String?,
    val friends: String?,
    val messages: String?,
    val notifications: String?
) : ParseData {
    override val isEmpty: Boolean
        get() = feed.isNullOrEmpty() &&
            friends.isNullOrEmpty() &&
            messages.isNullOrEmpty() &&
            notifications.isNullOrEmpty()
}

private class BadgeParserImpl : FrostParserBase<FrostBadges>(false) {
    // Not actually displayed
    override var nameRes: Int = R.string.frost_name

    override val url: String = FB_URL_BASE

    override fun parseImpl(doc: Document): FrostBadges? {
        val header = doc.getElementById("header") ?: return null
        if (header.select("[data-sigil=count]").isEmpty())
            return null
        val (feed, requests, messages, notifications) = listOf(
            "feed",
            "requests",
            "messages",
            "notifications"
        )
            .map { "[data-sigil*=$it] [data-sigil=count]" }
            .map { doc.select(it) }
            .map { e -> e?.getOrNull(0)?.ownText() }
        return FrostBadges(
            feed = feed,
            friends = requests,
            messages = messages,
            notifications = notifications
        )
    }
}