import {
	type IExecuteFunctions,
	type IDataObject,
	type ILoadOptionsFunctions,
	type INodeExecutionData,
	type INodePropertyOptions,
	type INodeType,
	type INodeTypeDescription,
	NodeConnectionTypes,
	NodeOperationError,
} from 'n8n-workflow';

import { customerFields, customerOperations } from './descriptions';
import {
	adjustMetadata,
	setFields,
	setMetadata,
	toSnakeCase,
	woocommerceApiRequest,
	woocommerceApiRequestAllItems,
} from './GenericFunctions';
import { orderFields, orderOperations } from './OrderDescription';
import type {
	IAddress,
	ICouponLine,
	IFeeLine,
	ILineItem,
	IOrder,
	IShoppingLine,
} from './OrderInterface';
import { productFields, productOperations } from './ProductDescription';
import type { IDimension, IImage, IProduct } from './ProductInterface';

function assertResourceId(
	context: IExecuteFunctions,
	id: unknown,
	displayName: string,
	itemIndex: number,
): void {
	if (id === undefined || id === null || String(id).trim() === '') {
		throw new NodeOperationError(context.getNode(), `${displayName} must not be empty`, {
			itemIndex,
		});
	}
}

export class WooCommerce implements INodeType {
	description: INodeTypeDescription = {
		displayName: 'WooCommerce',
		name: 'wooCommerce',
		icon: 'file:wooCommerce.svg',
		group: ['output'],
		version: 1,
		subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
		description: 'Consume WooCommerce API',
		defaults: {
			name: 'WooCommerce',
		},
		inputs: [NodeConnectionTypes.Main],
		outputs: [NodeConnectionTypes.Main],
		usableAsTool: true,
		credentials: [
			{
				name: 'wooCommerceApi',
				required: true,
			},
		],
		properties: [
			{
				displayName: 'Resource',
				name: 'resource',
				type: 'options',
				noDataExpression: true,
				options: [
					{
						name: 'Customer',
						value: 'customer',
					},
					{
						name: 'Order',
						value: 'order',
					},
					{
						name: 'Product',
						value: 'product',
					},
				],
				default: 'product',
			},
			...customerOperations,
			...customerFields,
			...productOperations,
			...productFields,
			...orderOperations,
			...orderFields,
		],
	};

	methods = {
		loadOptions: {
			// Get all the available categories to display them to user so that they can
			// select them easily
			async getCategories(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const categories = await woocommerceApiRequestAllItems.call(
					this,
					'GET',
					'/products/categories',
					{},
				);
				for (const category of categories) {
					const categoryName = category.name;
					const categoryId = category.id;
					returnData.push({
						name: categoryName,
						value: categoryId,
					});
				}
				return returnData;
			},
			// Get all the available tags to display them to user so that they can
			// select them easily
			async getTags(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const tags = await woocommerceApiRequestAllItems.call(this, 'GET', '/products/tags', {});
				for (const tag of tags) {
					const tagName = tag.name;
					const tagId = tag.id;
					returnData.push({
						name: tagName,
						value: tagId,
					});
				}
				return returnData;
			},
		},
	};

	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
		const items = this.getInputData();
		const returnData: INodeExecutionData[] = [];
		const length = items.length;
		let responseData;
		const resource = this.getNodeParameter('resource', 0);
		const operation = this.getNodeParameter('operation', 0);

		for (let i = 0; i < length; i++) {
			const qs: IDataObject = {};
			try {
				if (resource === 'customer') {
					// **********************************************************************
					//                                customer
					// **********************************************************************

					// https://woocommerce.github.io/woocommerce-rest-api-docs/?shell#customer-properties

					if (operation === 'create') {
						// ----------------------------------------
						//             customer: create
						// ----------------------------------------

						// https://woocommerce.github.io/woocommerce-rest-api-docs/?javascript#create-a-customer

						const body = {
							email: this.getNodeParameter('email', i),
						} as IDataObject;

						const additionalFields = this.getNodeParameter('additionalFields', i);

						if (Object.keys(additionalFields).length) {
							Object.assign(body, adjustMetadata(additionalFields));
						}

						responseData = await woocommerceApiRequest.call(this, 'POST', '/customers', body);
					} else if (operation === 'delete') {
						// ----------------------------------------
						//             customer: delete
						// ----------------------------------------

						// https://woocommerce.github.io/woocommerce-rest-api-docs/?javascript#delete-a-customer

						const customerId = this.getNodeParameter('customerId', i);
						assertResourceId(this, customerId, 'Customer ID', i);

						qs.force = true; // required, customers do not support trashing

						const endpoint = `/customers/${customerId}`;
						responseData = await woocommerceApiRequest.call(this, 'DELETE', endpoint, {}, qs);
					} else if (operation === 'get') {
						// ----------------------------------------
						//              customer: get
						// ----------------------------------------

						// https://woocommerce.github.io/woocommerce-rest-api-docs/?javascript#retrieve-a-customer

						const customerId = this.getNodeParameter('customerId', i);
						assertResourceId(this, customerId, 'Customer ID', i);

						const endpoint = `/customers/${customerId}`;
						responseData = await woocommerceApiRequest.call(this, 'GET', endpoint);
					} else if (operation === 'getAll') {
						// ----------------------------------------
						//             customer: getAll
						// ----------------------------------------

						// https://woocommerce.github.io/woocommerce-rest-api-docs/?javascript#list-all-customers

						const filters = this.getNodeParameter('filters', i);
						const returnAll = this.getNodeParameter('returnAll', i);

						if (Object.keys(filters).length) {
							Object.assign(qs, filters);
						}

						if (returnAll) {
							responseData = await woocommerceApiRequestAllItems.call(
								this,
								'GET',
								'/customers',
								{},
								{},
							);
						} else {
							qs.per_page = this.getNodeParameter('limit', i);
							responseData = await woocommerceApiRequest.call(this, 'GET', '/customers', {}, qs);
						}
					} else if (operation === 'update') {
						// ----------------------------------------
						//             customer: update
						// ----------------------------------------

						// https://woocommerce.github.io/woocommerce-rest-api-docs/?javascript#update-a-customer

						const body = {} as IDataObject;
						const updateFields = this.getNodeParameter('updateFields', i);

						if (Object.keys(updateFields).length) {
							Object.assign(body, adjustMetadata(updateFields));
						}

						const customerId = this.getNodeParameter('customerId', i);
						assertResourceId(this, customerId, 'Customer ID', i);

						const endpoint = `/customers/${customerId}`;
						responseData = await woocommerceApiRequest.call(this, 'PUT', endpoint, body);
					}
				} else if (resource === 'product') {
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#create-a-product
					if (operation === 'create') {
						const name = this.getNodeParameter('name', i) as string;
						const additionalFields = this.getNodeParameter('additionalFields', i);
						const body: IProduct = {
							name,
						};

						setFields(additionalFields, body);

						if (additionalFields.categories) {
							body.categories = (additionalFields.categories as string[]).map((category) => ({
								id: parseInt(category, 10),
							})) as unknown as IDataObject[];
						}

						const images = (this.getNodeParameter('imagesUi', i) as IDataObject)
							.imagesValues as IImage[];
						if (images) {
							body.images = images;
						}
						const dimension = (this.getNodeParameter('dimensionsUi', i) as IDataObject)
							.dimensionsValues as IDimension;
						if (dimension) {
							body.dimensions = dimension;
						}
						const metadata = (this.getNodeParameter('metadataUi', i) as IDataObject)
							.metadataValues as IDataObject[];
						if (metadata) {
							body.meta_data = metadata;
						}
						responseData = await woocommerceApiRequest.call(this, 'POST', '/products', body);
					}
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#update-a-product
					if (operation === 'update') {
						const productId = this.getNodeParameter('productId', i) as string;
						assertResourceId(this, productId, 'Product ID', i);
						const updateFields = this.getNodeParameter('updateFields', i);
						const body: IProduct = {};

						setFields(updateFields, body);

						const images = (this.getNodeParameter('imagesUi', i) as IDataObject)
							.imagesValues as IImage[];
						if (images) {
							body.images = images;
						}
						const dimension = (this.getNodeParameter('dimensionsUi', i) as IDataObject)
							.dimensionsValues as IDimension;
						if (dimension) {
							body.dimensions = dimension;
						}
						const metadata = (this.getNodeParameter('metadataUi', i) as IDataObject)
							.metadataValues as IDataObject[];
						if (metadata) {
							body.meta_data = metadata;
						}
						responseData = await woocommerceApiRequest.call(
							this,
							'PUT',
							`/products/${productId}`,
							body,
						);
					}
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#retrieve-a-product
					if (operation === 'get') {
						const productId = this.getNodeParameter('productId', i) as string;
						assertResourceId(this, productId, 'Product ID', i);
						responseData = await woocommerceApiRequest.call(
							this,
							'GET',
							`/products/${productId}`,
							{},
							qs,
						);
					}
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#list-all-products
					if (operation === 'getAll') {
						const returnAll = this.getNodeParameter('returnAll', i);
						const options = this.getNodeParameter('options', i);
						if (options.after) {
							qs.after = options.after as string;
						}
						if (options.before) {
							qs.before = options.before as string;
						}
						if (options.category) {
							qs.category = options.category as string;
						}
						if (options.context) {
							qs.context = options.context as string;
						}
						if (options.featured) {
							qs.featured = options.featured as boolean;
						}
						if (options.maxPrice) {
							qs.max_price = options.maxPrice as string;
						}
						if (options.minPrice) {
							qs.min_price = options.minPrice as string;
						}
						if (options.order) {
							qs.order = options.order as string;
						}
						if (options.orderBy) {
							qs.orderby = options.orderBy as string;
						}
						if (options.search) {
							qs.search = options.search as string;
						}
						if (options.sku) {
							qs.sku = options.sku as string;
						}
						if (options.slug) {
							qs.slug = options.slug as string;
						}
						if (options.status) {
							qs.status = options.status as string;
						}
						if (options.stockStatus) {
							qs.stock_status = options.stockStatus as string;
						}
						if (options.tag) {
							qs.tag = options.tag as string;
						}
						if (options.taxClass) {
							qs.tax_class = options.taxClass as string;
						}
						if (options.type) {
							qs.type = options.type as string;
						}
						if (returnAll) {
							responseData = await woocommerceApiRequestAllItems.call(
								this,
								'GET',
								'/products',
								{},
								qs,
							);
						} else {
							qs.per_page = this.getNodeParameter('limit', i);
							responseData = await woocommerceApiRequest.call(this, 'GET', '/products', {}, qs);
						}
					}
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#delete-a-product
					if (operation === 'delete') {
						const productId = this.getNodeParameter('productId', i) as string;
						assertResourceId(this, productId, 'Product ID', i);
						responseData = await woocommerceApiRequest.call(
							this,
							'DELETE',
							`/products/${productId}`,
							{},
							{ force: true },
						);
					}
				}
				if (resource === 'order') {
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#create-an-order
					if (operation === 'create') {
						const additionalFields = this.getNodeParameter('additionalFields', i);
						const body: IOrder = {};

						setFields(additionalFields, body);

						const billing = (this.getNodeParameter('billingUi', i) as IDataObject)
							.billingValues as IAddress;
						if (billing !== undefined) {
							body.billing = billing;
							toSnakeCase(billing as IDataObject);
						}
						const shipping = (this.getNodeParameter('shippingUi', i) as IDataObject)
							.shippingValues as IAddress;
						if (shipping !== undefined) {
							body.shipping = shipping;
							toSnakeCase(shipping as IDataObject);
						}
						const couponLines = (this.getNodeParameter('couponLinesUi', i) as IDataObject)
							.couponLinesValues as ICouponLine[];
						if (couponLines) {
							body.coupon_lines = couponLines;
							setMetadata(couponLines);
							toSnakeCase(couponLines);
						}
						const feeLines = (this.getNodeParameter('feeLinesUi', i) as IDataObject)
							.feeLinesValues as IFeeLine[];
						if (feeLines) {
							body.fee_lines = feeLines;
							setMetadata(feeLines);
							toSnakeCase(feeLines);
						}
						const lineItems = (this.getNodeParameter('lineItemsUi', i) as IDataObject)
							.lineItemsValues as ILineItem[];
						if (lineItems) {
							body.line_items = lineItems;
							setMetadata(lineItems);
							toSnakeCase(lineItems);
						}
						const metadata = (this.getNodeParameter('metadataUi', i) as IDataObject)
							.metadataValues as IDataObject[];
						if (metadata) {
							body.meta_data = metadata;
						}
						const shippingLines = (this.getNodeParameter('shippingLinesUi', i) as IDataObject)
							.shippingLinesValues as IShoppingLine[];
						if (shippingLines) {
							body.shipping_lines = shippingLines;
							setMetadata(shippingLines);
							toSnakeCase(shippingLines);
						}
						responseData = await woocommerceApiRequest.call(this, 'POST', '/orders', body);
					}
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#update-an-order
					if (operation === 'update') {
						const orderId = this.getNodeParameter('orderId', i) as string;
						assertResourceId(this, orderId, 'Order ID', i);
						const updateFields = this.getNodeParameter('updateFields', i);
						const body: IOrder = {};

						if (updateFields.currency) {
							body.currency = updateFields.currency as string;
						}
						if (updateFields.customerId) {
							body.customer_id = parseInt(updateFields.customerId as string, 10);
						}
						if (updateFields.customerNote) {
							body.customer_note = updateFields.customerNote as string;
						}
						if (updateFields.parentId) {
							body.parent_id = parseInt(updateFields.parentId as string, 10);
						}
						if (updateFields.paymentMethodId) {
							body.payment_method = updateFields.paymentMethodId as string;
						}
						if (updateFields.paymentMethodTitle) {
							body.payment_method_title = updateFields.paymentMethodTitle as string;
						}

						if (updateFields.status) {
							body.status = updateFields.status as string;
						}
						if (updateFields.transactionID) {
							body.transaction_id = updateFields.transactionID as string;
						}
						const billing = (this.getNodeParameter('billingUi', i) as IDataObject)
							.billingValues as IAddress;
						if (billing !== undefined) {
							body.billing = billing;
							toSnakeCase(billing as IDataObject);
						}
						const shipping = (this.getNodeParameter('shippingUi', i) as IDataObject)
							.shippingValues as IAddress;
						if (shipping !== undefined) {
							body.shipping = shipping;
							toSnakeCase(shipping as IDataObject);
						}
						const couponLines = (this.getNodeParameter('couponLinesUi', i) as IDataObject)
							.couponLinesValues as ICouponLine[];
						if (couponLines) {
							body.coupon_lines = couponLines;
							setMetadata(couponLines);
							toSnakeCase(couponLines);
						}
						const feeLines = (this.getNodeParameter('feeLinesUi', i) as IDataObject)
							.feeLinesValues as IFeeLine[];
						if (feeLines) {
							body.fee_lines = feeLines;
							setMetadata(feeLines);
							toSnakeCase(feeLines);
						}
						const lineItems = (this.getNodeParameter('lineItemsUi', i) as IDataObject)
							.lineItemsValues as ILineItem[];
						if (lineItems) {
							body.line_items = lineItems;
							setMetadata(lineItems);
							toSnakeCase(lineItems);
						}
						const metadata = (this.getNodeParameter('metadataUi', i) as IDataObject)
							.metadataValues as IDataObject[];
						if (metadata) {
							body.meta_data = metadata;
						}
						const shippingLines = (this.getNodeParameter('shippingLinesUi', i) as IDataObject)
							.shippingLinesValues as IShoppingLine[];
						if (shippingLines) {
							body.shipping_lines = shippingLines;
							setMetadata(shippingLines);
							toSnakeCase(shippingLines);
						}

						responseData = await woocommerceApiRequest.call(
							this,
							'PUT',
							`/orders/${orderId}`,
							body,
						);
					}
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#retrieve-an-order
					if (operation === 'get') {
						const orderId = this.getNodeParameter('orderId', i) as string;
						assertResourceId(this, orderId, 'Order ID', i);
						responseData = await woocommerceApiRequest.call(
							this,
							'GET',
							`/orders/${orderId}`,
							{},
							qs,
						);
					}
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#list-all-orders
					if (operation === 'getAll') {
						const returnAll = this.getNodeParameter('returnAll', i);
						const options = this.getNodeParameter('options', i);
						if (options.after) {
							qs.after = options.after as string;
						}
						if (options.before) {
							qs.before = options.before as string;
						}
						if (options.category) {
							qs.category = options.category as string;
						}
						if (options.customer) {
							qs.customer = parseInt(options.customer as string, 10);
						}
						if (options.decimalPoints) {
							qs.dp = options.decimalPoints as number;
						}
						if (options.product) {
							qs.product = parseInt(options.product as string, 10);
						}
						if (options.order) {
							qs.order = options.order as string;
						}
						if (options.orderBy) {
							qs.orderby = options.orderBy as string;
						}
						if (options.search) {
							qs.search = options.search as string;
						}
						if (options.status) {
							qs.status = options.status as string;
						}
						if (returnAll) {
							responseData = await woocommerceApiRequestAllItems.call(
								this,
								'GET',
								'/orders',
								{},
								qs,
							);
						} else {
							qs.per_page = this.getNodeParameter('limit', i);
							responseData = await woocommerceApiRequest.call(this, 'GET', '/orders', {}, qs);
						}
					}
					//https://woocommerce.github.io/woocommerce-rest-api-docs/#delete-an-order
					if (operation === 'delete') {
						const orderId = this.getNodeParameter('orderId', i) as string;
						assertResourceId(this, orderId, 'Order ID', i);
						responseData = await woocommerceApiRequest.call(
							this,
							'DELETE',
							`/orders/${orderId}`,
							{},
							{ force: true },
						);
					}
				}
				const executionData = this.helpers.constructExecutionMetaData(
					this.helpers.returnJsonArray(responseData as IDataObject[]),
					{ itemData: { item: i } },
				);
				returnData.push(...executionData);
			} catch (error) {
				if (this.continueOnFail()) {
					returnData.push(
						...this.helpers.constructExecutionMetaData(
							this.helpers.returnJsonArray({ error: (error as Error).message }),
							{ itemData: { item: i } },
						),
					);
					continue;
				}
				throw error;
			}
		}
		return [returnData];
	}
}