/*
 * This file is part of the MediaWiki extension MultimediaViewer.
 *
 * MultimediaViewer 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 2 of the License, or
 * (at your option) any later version.
 *
 * MultimediaViewer 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 MultimediaViewer.  If not, see <http://www.gnu.org/licenses/>.
 */

( function () {
	/**
	 * Represents information about a single image repository
	 *
	 * @class mw.mmv.model.Repo
	 * @constructor
	 * @param {string} displayName
	 * @param {string} favIcon URL to the repo's favicon
	 * @param {boolean} isLocal
	 */
	function Repo(
		displayName,
		favIcon,
		isLocal
	) {
		/** @property {string} displayName Human-readable name of the repository */
		this.displayName = displayName;

		/** @property {string} favIcon An icon that represents the repository */
		this.favIcon = favIcon;

		/** @property {boolean} isLocal Whether the repository is the local wiki */
		this.isLocal = isLocal;
	}

	/**
	 * Creates a new object from repoInfo we found in an API response.
	 *
	 * @static
	 * @param {Object} repoInfo
	 * @return {mw.mmv.model.Repo}
	 */
	Repo.newFromRepoInfo = function ( repoInfo ) {
		if ( repoInfo.apiurl ) {
			return new ForeignApiRepo(
				repoInfo.displayname,
				repoInfo.favicon,
				false,
				repoInfo.apiurl,
				repoInfo.server,
				repoInfo.articlepath
			);
		} else if ( repoInfo.descBaseUrl ) {
			return new ForeignDbRepo(
				repoInfo.displayname,
				repoInfo.favicon,
				false,
				repoInfo.descBaseUrl
			);
		} else {
			return new Repo( repoInfo.displayname, repoInfo.favicon, repoInfo.local );
		}
	};

	/**
	 * Returns true if the repo is Wikimedia Commons.
	 *
	 * @return {boolean}
	 */
	Repo.prototype.isCommons = function () {
		// there does not seem to be a sensible way to do this
		return this.displayName === 'Wikimedia Commons';
	};

	/**
	 * Gets the article path for the repository.
	 *
	 * @param {boolean} absolute if true, the URL will be absolute (if false, it still might be)
	 * @return {string} Replace $1 with the page name you want to link to.
	 */
	Repo.prototype.getArticlePath = function ( absolute ) {
		var articlePath = mw.config.get( 'wgArticlePath' );
		if ( absolute ) {
			articlePath = mw.config.get( 'wgServer' ) + articlePath;
		}
		return articlePath;
	};

	/**
	 * Gets the a link to the site where the image was uploaded to.
	 * This is a hack and might break for wikis with exotic config; unfortunately no
	 * better data is provided currently.
	 *
	 * @return {string}
	 */
	Repo.prototype.getSiteLink = function () {
		return this.getArticlePath( true ).replace( '$1', '' );
	};

	/**
	 * Represents information about a foreign API repository
	 *
	 * @class mw.mmv.model.ForeignApiRepo
	 * @extends mw.mmv.model.Repo
	 * @constructor
	 * @inheritdoc
	 * @param {string} displayName
	 * @param {string} favIcon
	 * @param {boolean} isLocal
	 * @param {string} apiUrl URL to the wiki's api.php
	 * @param {string} server Hostname for the wiki
	 * @param {string} articlePath Path to articles on the wiki, relative to the hostname.
	 */
	function ForeignApiRepo(
		displayName,
		favIcon,
		isLocal,
		apiUrl,
		server,
		articlePath
	) {
		Repo.call( this, displayName, favIcon, isLocal );

		/** @property {string} apiUrl URL to the wiki's api.php */
		this.apiUrl = apiUrl;

		/** @property {string} server Hostname for the wiki */
		this.server = server;

		/** @property {string} articlePath Path to articles on the wiki, relative to the hostname */
		this.articlePath = articlePath;

		/** @property {string} absoluteArticlePath Path to articles on the wiki, relative to nothing */
		this.absoluteArticlePath = server + articlePath;
	}

	OO.inheritClass( ForeignApiRepo, Repo );

	/**
	 * @override
	 * @inheritdoc
	 */
	ForeignApiRepo.prototype.getArticlePath = function () {
		return this.absoluteArticlePath;
	};

	/**
	 * @override
	 * @inheritdoc
	 */
	ForeignApiRepo.prototype.isCommons = function () {
		return /^(https?:)?\/\/commons.wikimedia.org/.test( this.server );
	};

	/**
	 * Represents information about a foreign, shared DB repository
	 *
	 * @class mw.mmv.model.ForeignDbRepo
	 * @extends mw.mmv.model.Repo
	 * @constructor
	 * @inheritdoc
	 * @param {string} displayName
	 * @param {string} favIcon
	 * @param {boolean} isLocal
	 * @param {string} descBaseUrl Base URL for description pages - should include the "File:" prefix or similar.
	 */
	function ForeignDbRepo(
		displayName,
		favIcon,
		isLocal,
		descBaseUrl
	) {
		Repo.call( this, displayName, favIcon, isLocal );

		/** @property {string} descBaseUrl Base URL for descriptions on the wiki - append a file's title to this to get the description page */
		this.descBaseUrl = descBaseUrl;
	}

	OO.inheritClass( ForeignDbRepo, Repo );

	/**
	 * @override
	 * @inheritdoc
	 */
	ForeignDbRepo.prototype.getArticlePath = function () {
		return this.descBaseUrl.replace( /[^/:]*:$/, '$1' );
	};

	/**
	 * @override
	 * @inheritdoc
	 */
	ForeignDbRepo.prototype.isCommons = function () {
		return /^(https?:)?\/\/commons.wikimedia.org/.test( this.descBaseUrl );
	};

	mw.mmv.model.Repo = Repo;
	mw.mmv.model.ForeignApiRepo = ForeignApiRepo;
	mw.mmv.model.ForeignDbRepo = ForeignDbRepo;
}() );
