/*
 * Type definitions for ExcelJS
 * Project: https://github.com/guyonroche/exceljs
 * Definitions by: Rycochet https://github.com/Rycochet
 * 
 * This is a WIP
 */
declare namespace ExcelJS {

	type Zip = any;
	type Stream = any;
	type Model = any;

	export const enum PageSize {
		LETTER = 0,
		LEGAL = 5,
		EXECUTIVE = 7,
		A4 = 9,
		A5 = 11,
		B5 = 13,
		JIS = 13,
		ENVELOPE_10 = 20,
		ENVELOPE_DL = 27,
		ENVELOPE_C5 = 28,
		ENVELOPE_B5 = 34,
		ENVELOPE_Monarch = 37,
		DOUBLE_JAPAN_POSTCARD_ROTATED = 82,
		_16K_197X273 = 119
	}

	/**
	 * between	Values must lie between formula results
	 * notBetween	Values must not lie between formula results
	 * equal	Value must equal formula result
	 * notEqual	Value must not equal formula result
	 * greaterThan	Value must be greater than formula result
	 * lessThan	Value must be less than formula result
	 * greaterThanOrEqual	Value must be greater than or equal to formula result
	 * lessThanOrEqual	Value must be less than or equal to formula result
	 */
	export type Operator = "between"
		| "notBetween"
		| "equal"
		| "notEqual"
		| "greaterThan"
		| "lessThan"
		| "greaterThanOrEqual"
		| "lessThanOrEqual";

	export type PatternStyles = "none"
		| "solid"
		| "darkVertical"
		| "darkGray"
		| "mediumGray"
		| "lightGray"
		| "gray125"
		| "gray0625"
		| "darkHorizontal"
		| "darkVertical"
		| "darkDown"
		| "darkUp"
		| "darkGrid"
		| "darkTrellis"
		| "lightHorizontal"
		| "lightVertical"
		| "lightDown"
		| "lightUp"
		| "lightGrid"
		| "lightTrellis"
		| "lightGrid";

	export type BorderStyles = "thin"
		| "dotted"
		| "dashDot"
		| "hair"
		| "dashDotDot"
		| "slantDashDot"
		| "mediumDashed"
		| "mediumDashDotDot"
		| "mediumDashDot"
		| "medium"
		| "double"
		| "thick"

	export interface View {
		x?: number;
		y?: number;
		width?: number;
		height?: number;
		firstSheet?: number;
		activeTab?: number;
		visibility?: "visible";
		xSplit?: number;
		ySplit?: number;
	}

	export interface WorkbookProperties {
		tabColor?: Color;
		showGridLines?: boolean;
		views?: View[];
		date1904?: boolean;
		outlineLevelCol?: number;
		outlineLevelRow?: number;
	}

	export interface WorksheetProperties {
		/**
		 * The worksheet column outline level
		 */
		outlineLevelCol: number;
		/**
		 * The worksheet row outline level
		 */
		outlineLevelRow: number;
		/**
		 * Default row height
		 */
		defaultRowHeight: number;
		/**
		 * TBD
		 */
		dyDescent: number;
	}

	export interface WorksheetViews {
		/**
		 * Controls the view state - one of normal, frozen or split
		 */
		state: "normal" | "frozen" | "split";
		/**
		 * The currently selected cell
		 */
		activeCell: string;
		/**
		 * Shows or hides the ruler in Page Layout
		 */
		showRuler: boolean;
		/**
		 * Shows or hides the row and column headers (e.g. A1, B1 at the top
		 * and 1,2,3 on the left
		 */
		showRowColHeaders: boolean;
		/**
		 * Shows or hides the gridlines (shown for cells where borders have not
		 * been defined)
		 */
		showGridLines: boolean;
		/**
		 * Percentage zoom to use for the view
		 */
		zoomScale: number;
		/**
		 * Normal zoom for the view
		 */
		zoomScaleNormal: number;
		/**
		 * Presentation style - one of pageBreakPreview or pageLayout. Note
		 * pageLayout is not compatable with frozen views
		 */
		style: "pageBreakPreview" | "pageLayout";
	}

	export interface WorksheetFrozenViews extends WorksheetViews {
		/**
		 * Controls the view state - one of normal, frozen or split
		 */
		state: "frozen";
		/**
		 * How many columns to freeze. To freeze rows only, set this to 0 or
		 * undefined
		 */
		xSplit: number;
		/**
		 * How many rows to freeze. To freeze columns only, set this to 0 or
		 * undefined
		 */
		ySplit: number;
		/**
		 * Which cell will be top-left in the bottom-right pane. Note: cannot
		 * be a frozen cell. Defaults to first unfrozen cell
		 */
		topLeftCell: string;
	}

	export interface WorksheetSplitViews extends WorksheetViews {
		/**
		 * Controls the view state - one of normal, frozen or split
		 */
		state: "split";
		/**
		 * How many points from the left to place the splitter. To split
		 * vertically, set this to 0 or undefined
		 */
		xSplit: number;
		/**
		 * How many points from the top to place the splitter. To split
		 * horizontally, set this to 0 or undefined
		 */
		ySplit: number;
		/**
		 * Which cell will be top-left in the bottom-right pane.
		 */
		topLeftCell: string;
		/**
		 * Which pane will be active - one of topLeft, topRight, bottomLeft and
		 * bottomRight
		 */
		activePane: "topLeft" | "topRight" | "bottomLeft" | "bottomRight";
	}

	export const enum ValueType {
		Null = 0,
		Merge = 1,
		Number = 2,
		String = 3,
		Date = 4,
		Hyperlink = 5,
		Formula = 6,
		SharedString = 7,
		RichText = 8
	}

	export interface Font {
		bold?: boolean;
		charset?: number;
		color: Color;
		family?: number;
		italic?: boolean;
		name?: string;
		outline?: boolean;
		scheme?: "none" | "minor" | "major";
		size?: number;
		strike?: boolean;
		underline?: boolean | "none" | "single" | "double" | "singleAccounting" | "doubleAccounting";
	}

	export interface Alignment {
		horizontal?: "left" | "center" | "right" | "fill" | "justify" | "centerContinuous" | "distributed";
		vertical?: "top" | "middle" | "bottom" | "distributed" | "justify";
		wrapText?: boolean;
		indent?: number;
		readingOrder?: "rtl" | "ltr";
		textRotation?: "vertical" | number;
	}

	export interface Color {
		argb: string;
	}

	export interface Border {
		up?: boolean;
		down?: boolean;
		left?: boolean;
		right?: boolean;
		style?: BorderStyles;
		color?: Color;
	}

	export interface Stop {
		position: number;
		color: Color;
	}

	export interface FillPattern {
		type: "pattern";
		pattern: PatternStyles;
		fgColor: Color;
		bgColor: Color
	}

	export interface FillGradientAngle {
		type: "gradient";
		gradient: "angle";
		degree: 0 | 45 | 90 | 135;
		stops: Stop[];
	}

	export interface FillGradientPath {
		type: "gradient";
		gradient: "path";
		center: {left: number, top: number};
		stops: Stop[];
	}

	export type Fill = FillPattern | FillGradientAngle | FillGradientPath;

	export interface Style {
		numFmt: string;
		font: Font;
		alignment: Alignment;
		border: Border;
		fill: Fill;
	}

	export interface DataValidationList {
		type: "list";
		allowBlank: boolean;
		/**
		 * ['"One,Two,Three,Four"']
		 * ['$D$5:$F$5']
		 */
		formulae: string[];
	}

	export interface DataValidationWhole {
		type: "whole";
		operator: Operator;
		showErrorMessage: boolean;
		formulae: number[];
		errorStyle: string;
		errorTitle: string;
		error: string;
	}

	export interface DataValidationDecimal {
		type: "decimal";
		operator: Operator;
		allowBlank: boolean;
		showInputMessage: boolean;
		formulae: number[];
		promptTitle: string;
		prompt: string;
	}

	export interface DataValidationTextLength {
		type: "textLength";
		operator: Operator;
		showErrorMessage: boolean;
		allowBlank: boolean;
		formulae: number[];
	}

	export interface DataValidationDate {
		type: "date";
		operator: Operator;
		showErrorMessage: boolean;
		allowBlank: boolean;
		formulae: Date[];
	}

	export type DataValidation = DataValidationList | DataValidationWhole | DataValidationDecimal | DataValidationTextLength | DataValidationDate;

	export interface Address {
		address: string;
		col: number;
		row: number;
		sheetName: string;
	}

	export interface Cell extends Style {
		readonly workbook: Workbook;
		readonly worksheet: Sheet;

		/**
		 * Modify/Add individual cell
		 */
		value: any;

		readonly text: string;

		readonly toCsvString: string;

		readonly address: string;
		readonly row: number;
		readonly col: number;
		readonly $col$row: string;

		/**
		 * Query a cell's type
		 */
		readonly type: ValueType;

		readonly effectiveType: ValueType;

		readonly isMerged: boolean;

		readonly fullAddress: Address;



		merge(master: Cell): void;
		unmerge(): void;
		isMergedTo(master: Cell): boolean;
		readonly master: Cell;

		readonly isHyperlink: boolean;
		readonly hyperlink: string;

		/*
		 * Style
		 */
		style: Style;

		/**
		 * Individual cells (or multiple groups of cells) can have names
		 * assigned to them. The names can be used in formulas and data
		 * validation (and probably more).
		 */
		name: string;

		/**
		 * Cells can define what values are valid or not and provide prompting
		 * to the user to help guide them.
		 */
		dataValidation: DataValidation;
	}

	export interface Column extends Style {
		readonly workbook: Workbook;
		readonly worksheet: Sheet;

		readonly number: number;
		readonly letter: string;

		readonly isCustomWidth: boolean;

		defn: {
			header: string;
			key: string;
			width: number;
			style: Style;
			hidden: boolean;
			outlineLevel: number;
		};

		readonly headers: string[];

		/**
		 * Check if any custom size or style
		 */
		readonly isDefault: boolean;

		/**
		 * The width of the column, this is the only value to be saved
		 */
		width: number;

		/**
		 * A convenience value for finding columns by name (must not match a
		 * column letter)
		 */
		key: string;

		/**
		 * The value of the top cell in the column
		 */
		header: string;

		/**
		 * Is the column hidden from view
		 */
		hidden: boolean;

		/**
		 * Set an outline level for columns
		 */
		outlineLevel: number;

		/**
		 * Columns support a readonly field to indicate the collapsed state
		 * based on outlineLevel
		 */
		readonly collapsed: boolean;

		/**
		 * Check if same size, visibility and style
		 */
		equivalentTo?(other: Column): boolean;

		/**
		 * Iterate over all current cells in this column
		 */
		eachCell(callback: (cell: Cell, rowNumber: number) => void): void;
		eachCell(options: {includeEmpty: boolean}, callback: (cell: Cell, rowNumber: number) => void): void;

		/**
		 * cut one or more columns (columns to the right are shifted left)
		 * If column properties have been defined, they will be cut or moved accordingly
		 * Known Issue: If a splice causes any merged cells to move, the results may be unpredictable
		 */
		spliceColumns(start: number, count: number, ...insert: Cell[][]): void;
	}

	export interface Row extends Style {
		readonly workbook: Workbook;
		readonly worksheet: Sheet;

		/**
		 * Return the row number
		 */
		readonly number: number;

		/**
		 * A sparse array of cell values
		 */
		values: any[] | {[key: string]: any};

		/**
		 * Returns true if the row includes at least one cell with a value
		 */
		readonly hasValues: boolean;

		/**
		 * Number of cells in this row
		 */
		readonly cellCount: number;

		/**
		 * Number of non-empty cells in this row
		 */
		readonly actualCellCount: number;

		/**
		 * Get the min and max column number for the non-null cells in this row
		 * or null
		 */
		readonly dimensions: null | {min: number, max: number};

		/**
		 * The height of the row, this is the only value to be saved
		 */
		height: number;

		/**
		 * Set an outline level for columns
		 */
		outlineLevel: number;

		/**
		 * Columns support a readonly field to indicate the collapsed state
		 * based on outlineLevel
		 */
		readonly collapsed: boolean;

		/**
		 * Assign row values by object, using column keys
		 */
		value: {[columnId: string]: any} | any[]

		/**
		 * Returns the cell at col.
		 * If not found, return undefined
		 */
		findCell(col: number): Cell | undefined;

		/**
		 * Inform Streaming Writer that this row (and all rows before it) are
		 * complete and ready to write. Has no effect on Worksheet document
		 */
		commit(): void;

		/**
		 * Return the cell at col.
		 * If not found, create a new one.
		 */
		getCell(col: string | number): Cell;


		/**
		 * Iterate over all current cells in this column
		 */
		eachCell(callback: (cell: Cell, rowNumber: number) => void): void;
		eachCell(options: {includeEmpty: boolean}, callback: (cell: Cell, rowNumber: number) => void): void;

		/**
		 * cut one or more rows (rows below are shifted up)
		 * If row properties have been defined, they will be cut or moved accordingly
		 * Known Issue: If a splice causes any merged cells to move, the results may be unpredictable
		 */
		splice?(start: number, count: number, ...insert: Cell[][]): void;
	}

	export interface PageSetupOptions {
		/**
		 * Whitespace on the borders of the page. Units are inches.
		 */
		margins: number;
		/**
		 * Orientation of the page - i.e. taller (portrait) or wider (landscape)
		 */
		orientation: "portrait" | "landscape";
		/**
		 * Horizontal Dots per Inch. Default value is -1
		 */
		horizontalDpi: number;
		/**
		 * Vertical Dots per Inch. Default value is -1
		 */
		verticalDpi: number;
		/**
		 * Whether to use fitToWidth and fitToHeight or scale settings. Default
		 * is based on presence of these settings in the pageSetup object - if
		 * both are present, scale wins (i.e. default will be false)
		 */
		fitToPage: "fitToWidth" | "fitToHeight" | "scale";
		/**
		 * Which order to print the pages - one of ['downThenOver',
		 * 'overThenDown']
		 */
		pageOrder: "downThenOver" | "overThenDown";
		/**
		 * Print without colour
		 */
		blackAndWhite: boolean;
		/**
		 * Print with less quality (and ink)
		 */
		draft: boolean;
		/**
		 * Where to place comments - one of ['atEnd', 'asDisplayed', 'None']
		 */
		cellComments: "atEnd" | "asDisplayed" | "None";
		/**
		 * Where to show errors - one of ['dash', 'blank', 'NA', 'displayed']
		 */
		errors: "dash" | "blank" | "NA" | "displayed";
		/**
		 * Percentage value to increase or reduce the size of the print. Active
		 * when fitToPage is false
		 */
		scale: number;
		/**
		 * How many pages wide the sheet should print on to. Active when
		 * fitToPage is true
		 */
		fitToWidth: number;
		/**
		 * How many pages high the sheet should print on to. Active when
		 * fitToPage is true
		 */
		fitToHeight: number;
		/**
		 * What paper size to use
		 */
		paperSize: PageSize;
		/**
		 * Whether to show the row numbers and column letters
		 */
		showRowColHeaders: boolean;
		/**
		 * Whether to show grid lines
		 */
		showGridLines: boolean;
		/**
		 * Which number to use for the first page
		 */
		firstPageNumber: number;
		/**
		 * Whether to center the sheet data horizontally
		 */
		horizontalCentered: boolean;
		/**
		 * Whether to center the sheet data vertically
		 */
		verticalCentered: boolean;
		/**
		 * Set the print area
		 */
		printArea: string;
	}

	export interface Sheet {
		pageSetup: PageSetupOptions;
		properties: WorksheetProperties;
		views: (WorksheetViews | WorksheetFrozenViews | WorksheetSplitViews)[];

		/**
		 * An array of Columns
		 */
		columns: Column[];

		/**
		 * The total row size of the document. Equal to the row number of the
		 * last row that has values.
		 */
		rowCount: number;

		/**
		 * A count of the number of rows that have values. If a mid-document
		 * row is empty, it will not be included in the count.
		 */
		actualRowCount: number;

		/**
		 * The total column size of the document. Equal to the maximum cell
		 * count from all of the rows
		 */
		columnCount: number;

		/**
		 * A count of the number of columns that have values.
		 */
		actualColumnCount: number;

		/**
		 * Check of the sheet has any merges
		 */
		hasMerges: boolean;

		/**
		 * Bottom row of the sheet
		 */
		lastRow: number;

		/**
		 * Get a single column by col number or ID. If it doesn't exist, create
		 * it and any gaps before it
		 */
		getColumn(name: string | number): Column;

		/**
		 * Get a row by row number.
		 */
		getRow(name: number): Row;

		/**
		 * cut one or more columns (columns to the right are shifted left)
		 * If column properties have been defined, they will be cut or moved accordingly
		 * Known Issue: If a splice causes any merged cells to move, the results may be unpredictable
		 */
		spliceColumns?(start: number, count: number, ...insert: Cell[][]): void;

		/**
		 * cut one or more rowa (rows below are shifted up)
		 * If row properties have been defined, they will be cut or moved accordingly
		 * Known Issue: If a splice causes any merged cells to move, the results may be unpredictable
		 */
		spliceRows?(start: number, count: number, ...insert: Cell[][]): void;

		/**
		 * Find a row (if exists) by row number
		 */
		findRow(row: number): Row;

		/**
		 * Add a single row to the sheet
		 */
		addRow(cells?: {[columnId: string]: any} | any[]): Row;

		/**
		 * Add multiple rows to the sheet
		 */
		addRows(cells: ({[columnId: string]: any} | any[])[]): void;

		/**
		 * Iterate over all rows that have values in a worksheet
		 */
		eachRow?(callback: (row: Row, rowNumber: number) => void): void;
		eachRow?(options: {includeEmpty: boolean}, callback: (row: Row, rowNumber: number) => void): void;

		/**
		 * Returns the cell at [r,c] or address given by r.
		 * If not found, return undefined
		 */
		findCell(address: string): Cell | undefined;
		findCell(row: number, col: number): Cell | undefined;

		/**
		 * Return all rows as sparse array
		 */
		getSheetValues(): Cell[][];

		/**
		 * Return the cell at [r,c] or address given by r.
		 * If not found, create a new one.
		 */
		getCell(address: string): Cell;
		getCell(row: number, col: number): Cell;

		/**
		 * Convert the range defined by ['tl:br'], [tl,br] or [t,l,b,r] into a
		 * single 'merged' cell
		 */
		mergeCells?(cellRange: string): void;
		mergeCells?(topLeft: string, bottomRight: string): void;
		mergeCells?(top: number, left: number, bottom: number, right: number): void;

		/**
		 * Scan the range defined by ['tl:br'], [tl,br] or [t,l,b,r] and if any
		 * cell is part of a merge, un-merge the group. Note this function can
		 * affect multiple merges and merge-blocks are atomic - either they're
		 * all merged or all un-merged.
		 */
		unMergeCells?(cellRange: string): void;
		unMergeCells?(topLeft: string, bottomRight: string): void;
		unMergeCells?(top: number, left: number, bottom: number, right: number): void;

	}

	interface LoadOptions {
		base64?: boolean;
	}

	interface WriteOptions {
		base64?: boolean;
		useStyles?: boolean;
		useSharedStrings?: boolean;
	}

	export interface XLSX {
		addApp(zip: Zip, model: Model): Promise<void>;
		addContentTypes(zip: Zip, model: Model): Promise<void>;
		addCore(zip: Zip, model: Model): Promise<void>;
		addOfficeRels(zip: Zip, model: Model): Promise<void>;
		addSharedStrings(zip: Zip, model: Model): Promise<void>;
		addStyles(zip: Zip, model: Model): Promise<void>;
		addThemes(zip: Zip): Promise<void>;
		addWorkbook(zip: Zip, model: Model, options: any): Promise<void>;
		addWorkbookRels(zip: Zip, model: Model): Promise<void>;
		addWorksheets(zip: Zip, model: Model, options: any): Promise<void>;
		createInputStream(): Promise<void>;
		load(data: any, options?: LoadOptions): Promise<Workbook>;
		parseRels(stream: Stream): Promise<void>;
		parseSharedStrings(stream: Stream): Promise<void>;
		parseWorkbook(stream: Stream): Promise<void>;
		parseWorksheet(stream: Stream): Promise<void>;
		read(stream: Stream): Promise<Workbook>;
		readFile(filename: string): Promise<void>;
		reconcile(model: Model): Promise<void>;
		write(stream: Stream, options?: WriteOptions): Promise<void>;
		writeBuffer(options?: WriteOptions): Promise<void>;
		writeFile(filename: string, options?: WriteOptions): Promise<void>;
	}

	export class Workbook {
		creator?: string;
		lastModifiedBy?: string;
		lastPrinted?: Date;
		created?: Date;
		modified?: Date;
		properties?: WorkbookProperties;
		worksheets?: Sheet[];
		definedNames?: string[];
		views?: View[];
		company?: string;
		manager?: string;
		title?: string;
		subject?: string;
		keywords?: string;
		category?: string;
		description?: string;
		language?: string;
		revision?: string;

		model?: any;
		xlsx?: XLSX;

		addWorksheet?(name: string, options?: WorkbookProperties): Sheet;
		getWorksheet?(name: string | number): Sheet;
		removeWorksheet?(name: string | number): void;

		eachSheet?(callback: (worksheet: Sheet, sheetId: number) => void): void;
	}
}