import { IExecuteFunctions } from 'n8n-core';
import { INodeExecutionData } from 'n8n-workflow';
import { SheetProperties } from '../../helpers/GoogleSheets.types';
import { GoogleSheet } from '../../helpers/GoogleSheet';
import {
	getColumnName,
	getColumnNumber,
	untilSheetSelected,
} from '../../helpers/GoogleSheets.utils';

export const description: SheetProperties = [
	{
		displayName: 'Clear',
		name: 'clear',
		type: 'options',
		options: [
			{
				name: 'Whole Sheet',
				value: 'wholeSheet',
			},
			{
				name: 'Specific Rows',
				value: 'specificRows',
			},
			{
				name: 'Specific Columns',
				value: 'specificColumns',
			},
			{
				name: 'Specific Range',
				value: 'specificRange',
			},
		],
		displayOptions: {
			show: {
				resource: ['sheet'],
				operation: ['clear'],
			},
			hide: {
				...untilSheetSelected,
			},
		},
		default: 'wholeSheet',
		description: 'What to clear',
	},
	{
		displayName: 'Keep First Row',
		name: 'keepFirstRow',
		type: 'boolean',
		displayOptions: {
			show: {
				resource: ['sheet'],
				operation: ['clear'],
				clear: ['wholeSheet'],
			},
			hide: {
				...untilSheetSelected,
			},
		},
		default: false,
	},
	{
		displayName: 'Start Row Number',
		name: 'startIndex',
		type: 'number',
		typeOptions: {
			minValue: 1,
		},
		default: 1,
		description: 'The row number to delete from, The first row is 1',
		displayOptions: {
			show: {
				resource: ['sheet'],
				operation: ['clear'],
				clear: ['specificRows'],
			},
			hide: {
				...untilSheetSelected,
			},
		},
	},
	{
		displayName: 'Number of Rows to Delete',
		name: 'rowsToDelete',
		type: 'number',
		typeOptions: {
			minValue: 1,
		},
		default: 1,
		displayOptions: {
			show: {
				resource: ['sheet'],
				operation: ['clear'],
				clear: ['specificRows'],
			},
			hide: {
				...untilSheetSelected,
			},
		},
	},

	{
		displayName: 'Start Column',
		name: 'startIndex',
		type: 'string',
		default: 'A',
		description: 'The column to delete',
		displayOptions: {
			show: {
				resource: ['sheet'],
				operation: ['clear'],
				clear: ['specificColumns'],
			},
			hide: {
				...untilSheetSelected,
			},
		},
	},
	{
		// Could this be better as "end column"?
		displayName: 'Number of Columns to Delete',
		name: 'columnsToDelete',
		type: 'number',
		typeOptions: {
			minValue: 1,
		},
		default: 1,
		displayOptions: {
			show: {
				resource: ['sheet'],
				operation: ['clear'],
				clear: ['specificColumns'],
			},
			hide: {
				...untilSheetSelected,
			},
		},
	},
	{
		displayName: 'Range',
		name: 'range',
		type: 'string',
		displayOptions: {
			show: {
				resource: ['sheet'],
				operation: ['clear'],
				clear: ['specificRange'],
			},
			hide: {
				...untilSheetSelected,
			},
		},
		default: 'A:F',
		required: true,
		description:
			'The table range to read from or to append data to. See the Google <a href="https://developers.google.com/sheets/api/guides/values#writing">documentation</a> for the details. If it contains multiple sheets it can also be added like this: "MySheet!A:F"',
	},
];

export async function execute(
	this: IExecuteFunctions,
	sheet: GoogleSheet,
	sheetName: string,
): Promise<INodeExecutionData[]> {
	const items = this.getInputData();

	for (let i = 0; i < items.length; i++) {
		const clearType = this.getNodeParameter('clear', i) as string;
		const keepFirstRow = this.getNodeParameter('keepFirstRow', i, false) as boolean;
		let range = '';

		if (clearType === 'specificRows') {
			const startIndex = this.getNodeParameter('startIndex', i) as number;
			const rowsToDelete = this.getNodeParameter('rowsToDelete', i) as number;
			const endIndex = rowsToDelete === 1 ? startIndex : startIndex + rowsToDelete - 1;

			range = `${sheetName}!${startIndex}:${endIndex}`;
		}

		if (clearType === 'specificColumns') {
			const startIndex = this.getNodeParameter('startIndex', i) as string;
			const columnsToDelete = this.getNodeParameter('columnsToDelete', i) as number;
			const columnNumber = getColumnNumber(startIndex);
			const endIndex = columnsToDelete === 1 ? columnNumber : columnNumber + columnsToDelete - 1;

			range = `${sheetName}!${startIndex}:${getColumnName(endIndex)}`;
		}

		if (clearType === 'specificRange') {
			const rangeField = this.getNodeParameter('range', i) as string;
			const region = rangeField.includes('!') ? rangeField.split('!')[1] || '' : rangeField;

			range = `${sheetName}!${region}`;
		}

		if (clearType === 'wholeSheet') {
			range = sheetName;
		}

		if (keepFirstRow) {
			const firstRow = await sheet.getData(`${range}!1:1`, 'FORMATTED_VALUE');
			await sheet.clearData(range);
			await sheet.updateRows(range, firstRow as string[][], 'RAW', 1);
		} else {
			await sheet.clearData(range);
		}
	}

	return items;
}