/*
 * Copyright (c) 2016 The MITRE Corporation
 *
 * 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.
 */

var commentstreams_querier = ( function () {
	'use strict';

	return {
		queryComment: function ( pageid, reply ) {
			var self = this;
			var api = new mw.Api();
			api.get( {
				action: 'csquerycomment',
				pageid: pageid
			} )
				.done( function ( data ) {
					if ( data.csquerycomment === undefined ) {
						self.reportError( 'invalid', reply );
					}
					reply( data.csquerycomment );
				} )
				.fail( function ( code, error ) {
					self.reportError( error, reply );
				} );
		},
		deleteComment: function ( pageid, reply ) {
			var self = this;
			var api = new mw.Api();
			api.post( {
				action: 'csdeletecomment',
				pageid: pageid,
				token: mw.user.tokens.get( 'csrfToken' )
			} )
				.done( function () {
					reply();
				} )
				.fail( function ( code, error ) {
					self.reportError( error, reply );
				} );
		},
		postComment: function ( commenttitle, wikitext, associatedid, parentid, commentblockid,
			reply ) {
			var self = this;
			var api = new mw.Api();
			var data = {
				action: 'cspostcomment',
				wikitext: wikitext,
				associatedid: associatedid,
				commentblockid: commentblockid,
				token: mw.user.tokens.get( 'csrfToken' )
			};
			if ( commenttitle !== null ) {
				data.commenttitle = commenttitle;
			}
			if ( parentid !== null ) {
				data.parentid = parentid;
			}
			api.post(
				data
			)
				.done( function ( postData ) {
					if ( postData.cspostcomment === undefined ) {
						self.reportError( 'invalid', reply );
					}
					self.queryComment( postData.cspostcomment, reply );
				} )
				.fail( function ( code, error ) {
					self.reportError( error, reply );
				} );
		},
		editComment: function ( commenttitle, wikitext, pageid, reply ) {
			var self = this;
			var api = new mw.Api();
			var data = {
				action: 'cseditcomment',
				pageid: pageid,
				wikitext: wikitext,
				token: mw.user.tokens.get( 'csrfToken' )
			};
			if ( commenttitle ) {
				data.commenttitle = commenttitle;
			}
			api.post(
				data
			)
				.done( function () {
					self.queryComment( pageid, reply );
				} )
				.fail( function ( code, error ) {
					self.reportError( error, reply );
				} );
		},
		vote: function ( pageid, vote, reply ) {
			var self = this;
			var api = new mw.Api();
			api.post( {
				action: 'csvote',
				pageid: pageid,
				vote: vote,
				token: mw.user.tokens.get( 'csrfToken' )
			} )
				.done( function () {
					reply();
				} )
				.fail( function ( code, error ) {
					self.reportError( error, reply );
				} );
		},
		watch: function ( pageid, action, reply ) {
			var self = this;
			var api = new mw.Api();
			api.post( {
				action: action ? 'cswatch' : 'csunwatch',
				pageid: pageid,
				token: mw.user.tokens.get( 'csrfToken' )
			} )
				.done( function () {
					reply();
				} )
				.fail( function ( code, error ) {
					self.reportError( error, reply );
				} );
		},
		reportError: function ( error, reply ) {
			if (
				error === 'invalid' ||
				error.error === undefined ||
				error.error.code === undefined ||
				error.error[ '*' ] === undefined
			) {
				reply( {
					error: 'commentstreams-api-error-invalid'
				} );
			} else if ( error.error.code === 'nosuchpageid' ) {
				reply( {
					error: 'commentstreams-api-error-commentnotfound'
				} );
			} else if ( error.error.code === 'badtoken' ) {
				reply( {
					error: 'commentstreams-api-error-notloggedin'
				} );
			} else {
				// These types of errors should never happen, but in the case of install errors,
				// syntax errors during development, or conflicting extensions, they could happen.
				// Since there is no other good way of debugging them, they will be displayed.
				reply( {
					error: error.error[ '*' ]
				} );
			}
		}
	};
}() );

window.CommentStreamsQuerier = commentstreams_querier;