(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        define(["converse"], factory);
    } else {
        factory(converse);
    }
}(this, function (converse) {
    let __, html, _converse;

    converse.plugins.add("toolbar-utilities", {
        'dependencies': [],

        'initialize': function () {
            _converse = this._converse;
            __ = _converse.__;
            html = converse.env.html;

			_converse.api.listen.on('getToolbarButtons', function(toolbar_el, buttons)	{
				let style = "width:18px; height:18px; fill:var(--chat-color);";
				
				if (toolbar_el.model.get("type") === "chatroom") {
					style = "width:18px; height:18px; fill:var(--muc-color);";
				}
							
				buttons.push(html`
					<button class="btn toolbar-utilities-scroll" title="${__('Scroll to the bottom')}" @click=${scrollToBottom}/>
						<converse-icon style=" ${style}" class="fa fa-angle-double-down" size="1em"></converse-icon>
					</button>
				`);

				buttons.push(html`
					<button class="btn toolbar-utilities-thrash" title="${__('Trash chat history')}" @click=${trashHistory}/>
						<converse-icon style="${style}" class="far fa-trash-alt" size="1em"></converse-icon>
					</button>
				`);

				buttons.push(html`
					<button class="btn toolbar-utilities-refresh" title="${__('Refresh chat history')}" @click=${refreshHistory}/>
						<converse-icon style="${style}" class="fa fa-sync" size="1em"></converse-icon>
					</button>
				`);			

				return buttons;
			});			

        }
    });
		

	function openChatbox(view) {
		let jid = view.model.get("jid");
		let type = view.model.get("type");

		console.debug("openChatbox", jid, type);

		if (jid)
		{
			if (type == "chatbox") _converse.api.chats.open(jid, {'bring_to_foreground': true}, true);
			else
			if (type == "chatroom") _converse.api.rooms.open(jid, {'bring_to_foreground': true}, true);
		}
	}
		
	function refreshHistory(ev) {
		ev.stopPropagation();
		ev.preventDefault();
		
		const toolbar_el = converse.env.utils.ancestor(ev.target, 'converse-chat-toolbar');
		const chatview = _converse.chatboxviews.get(toolbar_el.model.get('jid'));		
		console.debug("refreshHistory", chatview);

		chatview.close();
		setTimeout(function() { openChatbox(chatview) });
	}

	async function trashHistory(ev) {
		ev.stopPropagation();
		ev.preventDefault();

		const result = confirm(_converse.__('Are you sure you want to clear the messages from this conversation?'));

		if (result === true) {		
			const toolbar_el = converse.env.utils.ancestor(ev.target, 'converse-chat-toolbar');
			await toolbar_el.model.messages.clearStore(); 
			toolbar_el.model.messages.fetched.resolve();		
		}
	}

	function scrollToBottom(ev) {
		ev.stopPropagation();
		ev.preventDefault();
		
		const toolbar_el = converse.env.utils.ancestor(ev.target, 'converse-chat-toolbar');
		const chatview = _converse.chatboxviews.get(toolbar_el.model.get('jid'));	
		const ele = chatview.querySelector(".chat-content__messages");		
		console.debug("scrollToBottom", ele);
		
		ele.scrollTo(0, ele.scrollHeight);
	}

}));