<?php

class AO3Bridge extends BridgeAbstract {
	const NAME = 'AO3';
	const URI = 'https://archiveofourown.org/';
	const CACHE_TIMEOUT = 1800;
	const DESCRIPTION = 'Returns works or chapters from Archive of Our Own';
	const MAINTAINER = 'Obsidienne';
	const PARAMETERS = array(
		'List' => array(
			'url' => array(
				'name' => 'url',
				'required' => true,
				// Example: F/F tag, complete works only
				'exampleValue' => self::URI
					. 'works?work_search[complete]=T&tag_id=F*s*F',
			),
		),
		'Bookmarks' => array(
			'user' => array(
				'name' => 'user',
				'required' => true,
				// Example: Nyaaru's bookmarks
				'exampleValue' => 'Nyaaru',
			),
		),
		'Work' => array(
			'id' => array(
				'name' => 'id',
				'required' => true,
				// Example: latest chapters from A Better Past by LysSerris
				'exampleValue' => '18181853',
			),
		)
	);

	// Feed for lists of works (e.g. recent works, search results, filtered tags,
	// bookmarks, series, collections).
	private function collectList($url) {
		$html = getSimpleHTMLDOM($url)
			or returnServerError('could not request AO3');
		$html = defaultLinkTo($html, self::URI);

		foreach($html->find('.index.group > li') as $element) {
			$item = array();

			$title = $element->find('div h4 a', 0);
			if (!isset($title)) continue; // discard deleted works
			$item['title'] = $title->plaintext;
			$item['content'] = $element;
			$item['uri'] = $title->href;

			$strdate = $element->find('div p.datetime', 0)->plaintext;
			$item['timestamp'] = strtotime($strdate);

			$chapters = $element->find('dl dd.chapters', 0);
			// bookmarked series and external works do not have a chapters count
			$chapters = (isset($chapters) ? $chapters->plaintext : 0);
			$item['uid'] = $item['uri'] . "/$strdate/$chapters";

			$this->items[] = $item;
		}
	}

	// Feed for recent chapters of a specific work.
	private function collectWork($id) {
		$url = self::URI . "/works/$id/navigate";
		$html = getSimpleHTMLDOM($url)
			or returnServerError('could not request AO3');
		$html = defaultLinkTo($html, self::URI);

		$this->title = $html->find('h2 a', 0)->plaintext;

		foreach($html->find('ol.index.group > li') as $element) {
			$item = array();

			$item['title'] = $element->find('a', 0)->plaintext;
			$item['content'] = $element;
			$item['uri'] = $element->find('a', 0)->href;

			$strdate = $element->find('span.datetime', 0)->plaintext;
			$strdate = str_replace('(', '', $strdate);
			$strdate = str_replace(')', '', $strdate);
			$item['timestamp'] = strtotime($strdate);

			$item['uid'] = $item['uri'] . "/$strdate";

			$this->items[] = $item;
		}

		$this->items = array_reverse($this->items);
	}

	public function collectData() {
		switch($this->queriedContext) {
			case 'Bookmarks':
				$user = $this->getInput('user');
				$this->title = $user;
				$url = self::URI
					. '/users/' . $user
					. '/bookmarks?bookmark_search[sort_column]=bookmarkable_date';
				return $this->collectList($url);
			case 'List': return $this->collectList(
				$this->getInput('url')
			);
			case 'Work': return $this->collectWork(
				$this->getInput('id')
			);
		}
	}

	public function getName() {
		$name = parent::getName() . " $this->queriedContext";
		if (isset($this->title)) $name .= " - $this->title";
		return $name;
	}

	public function getIcon() {
		return self::URI . '/favicon.ico';
	}
}
