mw.editcheck.BaseEditCheck = function MWBaseEditCheck( config ) {
	this.config = config;
};

OO.initClass( mw.editcheck.BaseEditCheck );

mw.editcheck.BaseEditCheck.static.onlyCoveredNodes = false;

mw.editcheck.BaseEditCheck.static.choices = [
	{
		action: 'accept',
		label: ve.msg( 'editcheck-dialog-action-yes' ),
		icon: 'check'
	},
	{
		action: 'reject',
		label: ve.msg( 'editcheck-dialog-action-no' ),
		icon: 'close'
	}
];

mw.editcheck.BaseEditCheck.static.description = ve.msg( 'editcheck-dialog-addref-description' );

/**
 * @param {mw.editcheck.Diff} diff
 * @return {mw.editcheck.EditCheckAction[]}
 */
mw.editcheck.BaseEditCheck.prototype.onBeforeSave = null;

/**
 * @param {mw.editcheck.Diff} diff
 * @return {mw.editcheck.EditCheckAction[]}
 */
mw.editcheck.BaseEditCheck.prototype.onDocumentChange = null;

/**
 * @param {string} choice `action` key from static.choices
 * @param {mw.editcheck.EditCheckAction} action
 * @param {ve.ui.EditCheckContextItem} contextItem
 */
mw.editcheck.BaseEditCheck.prototype.act = null;

/**
 * @param {mw.editcheck.EditCheckAction} action
 * @return {Object[]}
 */
mw.editcheck.BaseEditCheck.prototype.getChoices = function () {
	return this.constructor.static.choices;
};

/**
 * @param {mw.editcheck.EditCheckAction} action
 * @return {string}
 */
mw.editcheck.BaseEditCheck.prototype.getDescription = function () {
	return this.constructor.static.description;
};

/**
 * Find out whether the check should be applied
 *
 * This is a general check for its applicability to the viewer / page, rather
 * than a specific check based on the current edit. It's used to filter out
 * checks before any maybe-expensive content analysis happens.
 *
 * @return {boolean} Whether the check should be shown
 */
mw.editcheck.BaseEditCheck.prototype.canBeShown = function () {
	// all checks are only in the main namespace for now
	if ( mw.config.get( 'wgNamespaceNumber' ) !== mw.config.get( 'wgNamespaceIds' )[ '' ] ) {
		return false;
	}
	// some checks are configured to only be for logged in / out users
	if ( mw.editcheck.ecenable ) {
		return true;
	}
	// account status:
	// loggedin, loggedout, or any-other-value meaning 'both'
	// we'll count temporary users as "logged out" by using isNamed here
	if ( this.config.account === 'loggedout' && mw.user.isNamed() ) {
		return false;
	}
	if ( this.config.account === 'loggedin' && !mw.user.isNamed() ) {
		return false;
	}
	// some checks are only shown for newer users
	if ( this.config.maximumEditcount && mw.config.get( 'wgUserEditCount', 0 ) > this.config.maximumEditcount ) {
		return false;
	}
	return true;
};

/**
 * Get content ranges where at least the minimum about of text has been changed
 *
 * @param {mw.editcheck.Diff} diff
 * @return {ve.Range[]}
 */
mw.editcheck.BaseEditCheck.prototype.getModifiedRangesFromDiff = function ( diff ) {
	return diff.getModifiedRanges( this.constructor.static.onlyCoveredNodes )
		.filter(
			( range ) => range.getLength() >= this.config.minimumCharacters &&
				this.shouldApplyToSection( diff.documentModel, range )
		);
};

/**
 * Check if a modified range is a section we don't ignore (config.ignoreSections)
 *
 * @param {ve.dm.Document} documentModel
 * @param {ve.Range} range
 * @return {boolean}
 */
mw.editcheck.BaseEditCheck.prototype.shouldApplyToSection = function ( documentModel, range ) {
	const ignoreSections = this.config.ignoreSections || [];
	if ( ignoreSections.length === 0 && !this.config.ignoreLeadSection ) {
		// Nothing is forbidden, so everything is permitted
		return true;
	}
	const isHeading = function ( nodeType ) {
		return nodeType === 'mwHeading';
	};
	// Note: we set a limit of 1 here because otherwise this will turn around
	// to keep looking when it hits the document boundary:
	const heading = documentModel.getNearestNodeMatching( isHeading, range.start, -1, 1 );
	if ( !heading ) {
		// There's no preceding heading, so work out if we count as being in a
		// lead section. It's only a lead section if there's more headings
		// later in the document, otherwise it's just a stub article.
		return !(
			this.config.ignoreLeadSection &&
			!!documentModel.getNearestNodeMatching( isHeading, range.start, 1 )
		);
	}
	if ( ignoreSections.length === 0 ) {
		// There's nothing left to deny
		return true;
	}
	const compare = new Intl.Collator( documentModel.getLang(), { sensitivity: 'accent' } ).compare;
	const headingText = documentModel.data.getText( false, heading.getRange() );
	for ( let i = ignoreSections.length - 1; i >= 0; i-- ) {
		if ( compare( headingText, ignoreSections[ i ] ) === 0 ) {
			return false;
		}
	}
	return true;
};

/**
 * Adjust a fragment to include/exclude trailing punctuation
 *
 * @param {ve.dm.SurfaceFragment} insertionPointFragment
 * @return {ve.dm.SurfaceFragment}
 */
mw.editcheck.BaseEditCheck.prototype.adjustForPunctuation = function ( insertionPointFragment ) {
	if ( this.config.beforePunctuation ) {
		// TODO: Use UnicodeJS properties directly once is https://gerrit.wikimedia.org/r/c/unicodejs/+/893832 merged
		const sentenceProperties = {
			ATerm: [ 0x002E, 0x2024, 0xFE52, 0xFF0E ],
			STerm: [ 0x0021, 0x003F, 0x0589, 0x061E, 0x061F, 0x06D4, [ 0x0700, 0x0702 ], 0x07F9, 0x0837, 0x0839, 0x083D, 0x083E, 0x0964, 0x0965, 0x104A, 0x104B, 0x1362, 0x1367, 0x1368, 0x166E, 0x1735, 0x1736, 0x1803, 0x1809, 0x1944, 0x1945, [ 0x1AA8, 0x1AAB ], 0x1B5A, 0x1B5B, 0x1B5E, 0x1B5F, 0x1C3B, 0x1C3C, 0x1C7E, 0x1C7F, 0x203C, 0x203D, [ 0x2047, 0x2049 ], 0x2E2E, 0x2E3C, 0x3002, 0xA4FF, 0xA60E, 0xA60F, 0xA6F3, 0xA6F7, 0xA876, 0xA877, 0xA8CE, 0xA8CF, 0xA92F, 0xA9C8, 0xA9C9, [ 0xAA5D, 0xAA5F ], 0xAAF0, 0xAAF1, 0xABEB, 0xFE56, 0xFE57, 0xFF01, 0xFF1F, 0xFF61, 0x10A56, 0x10A57, [ 0x10F55, 0x10F59 ], 0x11047, 0x11048, [ 0x110BE, 0x110C1 ], [ 0x11141, 0x11143 ], 0x111C5, 0x111C6, 0x111CD, 0x111DE, 0x111DF, 0x11238, 0x11239, 0x1123B, 0x1123C, 0x112A9, 0x1144B, 0x1144C, 0x115C2, 0x115C3, [ 0x115C9, 0x115D7 ], 0x11641, 0x11642, [ 0x1173C, 0x1173E ], 0x11944, 0x11946, 0x11A42, 0x11A43, 0x11A9B, 0x11A9C, 0x11C41, 0x11C42, 0x11EF7, 0x11EF8, 0x16A6E, 0x16A6F, 0x16AF5, 0x16B37, 0x16B38, 0x16B44, 0x16E98, 0x1BC9F, 0x1DA88 ],
			Close: [ 0x0022, [ 0x0027, 0x0029 ], 0x005B, 0x005D, 0x007B, 0x007D, 0x00AB, 0x00BB, [ 0x0F3A, 0x0F3D ], 0x169B, 0x169C, [ 0x2018, 0x201F ], 0x2039, 0x203A, 0x2045, 0x2046, 0x207D, 0x207E, 0x208D, 0x208E, [ 0x2308, 0x230B ], 0x2329, 0x232A, [ 0x275B, 0x2760 ], [ 0x2768, 0x2775 ], 0x27C5, 0x27C6, [ 0x27E6, 0x27EF ], [ 0x2983, 0x2998 ], [ 0x29D8, 0x29DB ], 0x29FC, 0x29FD, [ 0x2E00, 0x2E0D ], 0x2E1C, 0x2E1D, [ 0x2E20, 0x2E29 ], 0x2E42, [ 0x3008, 0x3011 ], [ 0x3014, 0x301B ], [ 0x301D, 0x301F ], 0xFD3E, 0xFD3F, 0xFE17, 0xFE18, [ 0xFE35, 0xFE44 ], 0xFE47, 0xFE48, [ 0xFE59, 0xFE5E ], 0xFF08, 0xFF09, 0xFF3B, 0xFF3D, 0xFF5B, 0xFF5D, 0xFF5F, 0xFF60, 0xFF62, 0xFF63, [ 0x1F676, 0x1F678 ] ],
			SContinue: [ 0x002C, 0x002D, 0x003A, 0x055D, 0x060C, 0x060D, 0x07F8, 0x1802, 0x1808, 0x2013, 0x2014, 0x3001, 0xFE10, 0xFE11, 0xFE13, 0xFE31, 0xFE32, 0xFE50, 0xFE51, 0xFE55, 0xFE58, 0xFE63, 0xFF0C, 0xFF0D, 0xFF1A, 0xFF64 ]
		};
		const punctuationPattern = new RegExp(
			unicodeJS.charRangeArrayRegexp( [].concat(
				sentenceProperties.ATerm,
				sentenceProperties.STerm,
				sentenceProperties.Close,
				sentenceProperties.SContinue
			) )
		);
		let lastCharacter = insertionPointFragment.adjustLinearSelection( -1, 0 ).getText();
		while ( punctuationPattern.test( lastCharacter ) ) {
			insertionPointFragment = insertionPointFragment.adjustLinearSelection( -1, -1 );
			lastCharacter = insertionPointFragment.adjustLinearSelection( -1, 0 ).getText();
		}
	}
	return insertionPointFragment;
};