import {
	IExecuteFunctions,
} from 'n8n-core';

import {
	IDataObject,
	ILoadOptionsFunctions,
	INodeExecutionData,
	INodePropertyOptions,
	INodeType,
	INodeTypeDescription,
	JsonObject,
} from 'n8n-workflow';

import {
	xeroApiRequest,
	xeroApiRequestAllItems,
} from './GenericFunctions';

import {
	invoiceFields,
	invoiceOperations
} from './InvoiceDescription';

import {
	contactFields,
	contactOperations,
} from './ContactDescription';

import {
	IInvoice,
	ILineItem,
} from './InvoiceInterface';

import {
	IAddress,
	IContact,
	IPhone,
} from './IContactInterface';

export class Xero implements INodeType {
	description: INodeTypeDescription = {
		displayName: 'Xero',
		name: 'xero',
		icon: 'file:xero.svg',
		group: ['output'],
		version: 1,
		subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
		description: 'Consume Xero API',
		defaults: {
			name: 'Xero',
		},
		inputs: ['main'],
		outputs: ['main'],
		credentials: [
			{
				name: 'xeroOAuth2Api',
				required: true,
			},
		],
		properties: [
			{
				displayName: 'Resource',
				name: 'resource',
				type: 'options',
				options: [
					{
						name: 'Contact',
						value: 'contact',
					},
					{
						name: 'Invoice',
						value: 'invoice',
					},
				],
				default: 'invoice',
				description: 'Resource to consume.',
			},
			// CONTACT
			...contactOperations,
			...contactFields,
			// INVOICE
			...invoiceOperations,
			...invoiceFields,
		],
	};

	methods = {
		loadOptions: {
			// Get all the item codes to display them to user so that he can
			// select them easily
			async getItemCodes(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const organizationId = this.getCurrentNodeParameter('organizationId');
				const returnData: INodePropertyOptions[] = [];
				const { Items: items } = await xeroApiRequest.call(this, 'GET', '/items', { organizationId });
				for (const item of items) {
					const itemName = item.Description;
					const itemId = item.Code;
					returnData.push({
						name: itemName,
						value: itemId,
					});
				}
				return returnData;
			},
			// Get all the account codes to display them to user so that he can
			// select them easily
			async getAccountCodes(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const organizationId = this.getCurrentNodeParameter('organizationId');
				const returnData: INodePropertyOptions[] = [];
				const { Accounts: accounts } = await xeroApiRequest.call(this, 'GET', '/Accounts', { organizationId });
				for (const account of accounts) {
					const accountName = account.Name;
					const accountId = account.Code;
					returnData.push({
						name: accountName,
						value: accountId,
					});
				}
				return returnData;
			},
			// Get all the tenants to display them to user so that he can
			// select them easily
			async getTenants(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const tenants = await xeroApiRequest.call(this, 'GET', '', {}, {}, 'https://api.xero.com/connections');
				for (const tenant of tenants) {
					const tenantName = tenant.tenantName;
					const tenantId = tenant.tenantId;
					returnData.push({
						name: tenantName,
						value: tenantId,
					});
				}
				return returnData;
			},
			// Get all the brading themes to display them to user so that he can
			// select them easily
			async getBrandingThemes(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const organizationId = this.getCurrentNodeParameter('organizationId');
				const returnData: INodePropertyOptions[] = [];
				const { BrandingThemes: themes } = await xeroApiRequest.call(this, 'GET', '/BrandingThemes', { organizationId });
				for (const theme of themes) {
					const themeName = theme.Name;
					const themeId = theme.BrandingThemeID;
					returnData.push({
						name: themeName,
						value: themeId,
					});
				}
				return returnData;
			},
			// Get all the brading themes to display them to user so that he can
			// select them easily
			async getCurrencies(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const organizationId = this.getCurrentNodeParameter('organizationId');
				const returnData: INodePropertyOptions[] = [];
				const { Currencies: currencies } = await xeroApiRequest.call(this, 'GET', '/Currencies', { organizationId });
				for (const currency of currencies) {
					const currencyName = currency.Code;
					const currencyId = currency.Description;
					returnData.push({
						name: currencyName,
						value: currencyId,
					});
				}
				return returnData;
			},
			// Get all the tracking categories to display them to user so that he can
			// select them easily
			async getTrakingCategories(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const organizationId = this.getCurrentNodeParameter('organizationId');
				const returnData: INodePropertyOptions[] = [];
				const { TrackingCategories: categories } = await xeroApiRequest.call(this, 'GET', '/TrackingCategories', { organizationId });
				for (const category of categories) {
					const categoryName = category.Name;
					const categoryId = category.TrackingCategoryID;
					returnData.push({
						name: categoryName,
						value: categoryId,
					});
				}
				return returnData;
			},
			// // Get all the tracking categories to display them to user so that he can
			// // select them easily
			// async getTrakingOptions(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
			// 	const organizationId = this.getCurrentNodeParameter('organizationId');
			// 	const name = this.getCurrentNodeParameter('name');
			// 	const returnData: INodePropertyOptions[] = [];
			// 	const { TrackingCategories: categories } = await xeroApiRequest.call(this, 'GET', '/TrackingCategories', { organizationId });
			// 	const { Options: options } = categories.filter((category: IDataObject) => category.Name === name)[0];
			// 	for (const option of options) {
			// 		const optionName = option.Name;
			// 		const optionId = option.TrackingOptionID;
			// 		returnData.push({
			// 			name: optionName,
			// 			value: optionId,
			// 		});
			// 	}
			// 	return returnData;
			// },
		},
	};

	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
		const items = this.getInputData();
		const returnData: IDataObject[] = [];
		const length = items.length as unknown as number;
		const qs: IDataObject = {};
		let responseData;
		for (let i = 0; i < length; i++) {
			try {
				const resource = this.getNodeParameter('resource', 0) as string;
				const operation = this.getNodeParameter('operation', 0) as string;
				//https://developer.xero.com/documentation/api/invoices
				if (resource === 'invoice') {
					if (operation === 'create') {
						const organizationId = this.getNodeParameter('organizationId', i) as string;
						const type = this.getNodeParameter('type', i) as string;
						const additionalFields = this.getNodeParameter('additionalFields', i) as IDataObject;
						const contactId = this.getNodeParameter('contactId', i) as string;
						const lineItemsValues = ((this.getNodeParameter('lineItemsUi', i) as IDataObject).lineItemsValues as IDataObject[]);

						const body: IInvoice = {
							organizationId,
							Type: type,
							Contact: { ContactID: contactId },
						};

						if (lineItemsValues) {
							const lineItems: ILineItem[] = [];
							for (const lineItemValue of lineItemsValues) {
								const lineItem: ILineItem = {
									Tracking: [],
								};
								lineItem.AccountCode = lineItemValue.accountCode as string;
								lineItem.Description = lineItemValue.description as string;
								lineItem.DiscountRate = lineItemValue.discountRate as string;
								lineItem.ItemCode = lineItemValue.itemCode as string;
								lineItem.LineAmount = lineItemValue.lineAmount as string;
								lineItem.Quantity = (lineItemValue.quantity as number).toString();
								lineItem.TaxAmount = lineItemValue.taxAmount as string;
								lineItem.TaxType = lineItemValue.taxType as string;
								lineItem.UnitAmount = lineItemValue.unitAmount as string;
								// if (lineItemValue.trackingUi) {
								// 	//@ts-ignore
								// 	const { trackingValues } = lineItemValue.trackingUi as IDataObject[];
								// 	if (trackingValues) {
								// 		for (const trackingValue of trackingValues) {
								// 			const tracking: IDataObject = {};
								// 			tracking.Name = trackingValue.name as string;
								// 			tracking.Option = trackingValue.option as string;
								// 			lineItem.Tracking!.push(tracking);
								// 		}
								// 	}
								// }
								lineItems.push(lineItem);
							}
							body.LineItems = lineItems;
						}

						if (additionalFields.brandingThemeId) {
							body.BrandingThemeID = additionalFields.brandingThemeId as string;
						}
						if (additionalFields.currency) {
							body.CurrencyCode = additionalFields.currency as string;
						}
						if (additionalFields.currencyRate) {
							body.CurrencyRate = additionalFields.currencyRate as string;
						}
						if (additionalFields.date) {
							body.Date = additionalFields.date as string;
						}
						if (additionalFields.dueDate) {
							body.DueDate = additionalFields.dueDate as string;
						}
						if (additionalFields.dueDate) {
							body.DueDate = additionalFields.dueDate as string;
						}
						if (additionalFields.expectedPaymentDate) {
							body.ExpectedPaymentDate = additionalFields.expectedPaymentDate as string;
						}
						if (additionalFields.invoiceNumber) {
							body.InvoiceNumber = additionalFields.invoiceNumber as string;
						}
						if (additionalFields.lineAmountType) {
							body.LineAmountType = additionalFields.lineAmountType as string;
						}
						if (additionalFields.plannedPaymentDate) {
							body.PlannedPaymentDate = additionalFields.plannedPaymentDate as string;
						}
						if (additionalFields.reference) {
							body.Reference = additionalFields.reference as string;
						}
						if (additionalFields.sendToContact) {
							body.SentToContact = additionalFields.sendToContact as boolean;
						}
						if (additionalFields.status) {
							body.Status = additionalFields.status as string;
						}
						if (additionalFields.url) {
							body.Url = additionalFields.url as string;
						}

						responseData = await xeroApiRequest.call(this, 'POST', '/Invoices', body);
						responseData = responseData.Invoices;
					}
					if (operation === 'update') {
						const invoiceId = this.getNodeParameter('invoiceId', i) as string;
						const organizationId = this.getNodeParameter('organizationId', i) as string;
						const updateFields = this.getNodeParameter('updateFields', i) as IDataObject;

						const body: IInvoice = {
							organizationId,
						};

						if (updateFields.lineItemsUi) {
							const lineItemsValues = (updateFields.lineItemsUi as IDataObject).lineItemsValues as IDataObject[];
							if (lineItemsValues) {
								const lineItems: ILineItem[] = [];
								for (const lineItemValue of lineItemsValues) {
									const lineItem: ILineItem = {
										Tracking: [],
									};
									lineItem.AccountCode = lineItemValue.accountCode as string;
									lineItem.Description = lineItemValue.description as string;
									lineItem.DiscountRate = lineItemValue.discountRate as string;
									lineItem.ItemCode = lineItemValue.itemCode as string;
									lineItem.LineAmount = lineItemValue.lineAmount as string;
									lineItem.Quantity = (lineItemValue.quantity as number).toString();
									lineItem.TaxAmount = lineItemValue.taxAmount as string;
									lineItem.TaxType = lineItemValue.taxType as string;
									lineItem.UnitAmount = lineItemValue.unitAmount as string;
									// if (lineItemValue.trackingUi) {
									// 	//@ts-ignore
									// 	const { trackingValues } = lineItemValue.trackingUi as IDataObject[];
									// 	if (trackingValues) {
									// 		for (const trackingValue of trackingValues) {
									// 			const tracking: IDataObject = {};
									// 			tracking.Name = trackingValue.name as string;
									// 			tracking.Option = trackingValue.option as string;
									// 			lineItem.Tracking!.push(tracking);
									// 		}
									// 	}
									// }
									lineItems.push(lineItem);
								}
								body.LineItems = lineItems;
							}
						}

						if (updateFields.type) {
							body.Type = updateFields.type as string;
						}
						if (updateFields.Contact) {
							body.Contact = { ContactID: updateFields.contactId as string };
						}
						if (updateFields.brandingThemeId) {
							body.BrandingThemeID = updateFields.brandingThemeId as string;
						}
						if (updateFields.currency) {
							body.CurrencyCode = updateFields.currency as string;
						}
						if (updateFields.currencyRate) {
							body.CurrencyRate = updateFields.currencyRate as string;
						}
						if (updateFields.date) {
							body.Date = updateFields.date as string;
						}
						if (updateFields.dueDate) {
							body.DueDate = updateFields.dueDate as string;
						}
						if (updateFields.dueDate) {
							body.DueDate = updateFields.dueDate as string;
						}
						if (updateFields.expectedPaymentDate) {
							body.ExpectedPaymentDate = updateFields.expectedPaymentDate as string;
						}
						if (updateFields.invoiceNumber) {
							body.InvoiceNumber = updateFields.invoiceNumber as string;
						}
						if (updateFields.lineAmountType) {
							body.LineAmountType = updateFields.lineAmountType as string;
						}
						if (updateFields.plannedPaymentDate) {
							body.PlannedPaymentDate = updateFields.plannedPaymentDate as string;
						}
						if (updateFields.reference) {
							body.Reference = updateFields.reference as string;
						}
						if (updateFields.sendToContact) {
							body.SentToContact = updateFields.sendToContact as boolean;
						}
						if (updateFields.status) {
							body.Status = updateFields.status as string;
						}
						if (updateFields.url) {
							body.Url = updateFields.url as string;
						}

						responseData = await xeroApiRequest.call(this, 'POST', `/Invoices/${invoiceId}`, body);
						responseData = responseData.Invoices;
					}
					if (operation === 'get') {
						const organizationId = this.getNodeParameter('organizationId', i) as string;
						const invoiceId = this.getNodeParameter('invoiceId', i) as string;
						responseData = await xeroApiRequest.call(this, 'GET', `/Invoices/${invoiceId}`, { organizationId });
						responseData = responseData.Invoices;
					}
					if (operation === 'getAll') {
						const organizationId = this.getNodeParameter('organizationId', i) as string;
						const returnAll = this.getNodeParameter('returnAll', i) as boolean;
						const options = this.getNodeParameter('options', i) as IDataObject;
						if (options.statuses) {
							qs.statuses = (options.statuses as string[]).join(',');
						}
						if (options.orderBy) {
							qs.order = `${options.orderBy} ${(options.sortOrder === undefined) ? 'DESC' : options.sortOrder}`;
						}
						if (options.where) {
							qs.where = options.where;
						}
						if (options.createdByMyApp) {
							qs.createdByMyApp = options.createdByMyApp as boolean;
						}
						if (returnAll) {
							responseData = await xeroApiRequestAllItems.call(this, 'Invoices', 'GET', '/Invoices', { organizationId }, qs);
						} else {
							const limit = this.getNodeParameter('limit', i) as number;
							responseData = await xeroApiRequest.call(this, 'GET', `/Invoices`, { organizationId }, qs);
							responseData = responseData.Invoices;
							responseData = responseData.splice(0, limit);
						}
					}
				}
				if (resource === 'contact') {
					if (operation === 'create') {
						const organizationId = this.getNodeParameter('organizationId', i) as string;
						const name = this.getNodeParameter('name', i) as string;
						const additionalFields = this.getNodeParameter('additionalFields', i) as IDataObject;
						const addressesUi = additionalFields.addressesUi as IDataObject;
						const phonesUi = additionalFields.phonesUi as IDataObject;

						const body: IContact = {
							Name: name,
						};

						if (additionalFields.accountNumber) {
							body.AccountNumber = additionalFields.accountNumber as string;
						}

						if (additionalFields.bankAccountDetails) {
							body.BankAccountDetails = additionalFields.bankAccountDetails as string;
						}

						if (additionalFields.contactNumber) {
							body.ContactNumber = additionalFields.contactNumber as string;
						}

						if (additionalFields.contactStatus) {
							body.ContactStatus = additionalFields.contactStatus as string;
						}

						if (additionalFields.defaultCurrency) {
							body.DefaultCurrency = additionalFields.defaultCurrency as string;
						}

						if (additionalFields.emailAddress) {
							body.EmailAddress = additionalFields.emailAddress as string;
						}

						if (additionalFields.firstName) {
							body.FirstName = additionalFields.firstName as string;
						}

						if (additionalFields.lastName) {
							body.LastName = additionalFields.lastName as string;
						}

						if (additionalFields.purchasesDefaultAccountCode) {
							body.PurchasesDefaultAccountCode = additionalFields.purchasesDefaultAccountCode as string;
						}

						if (additionalFields.salesDefaultAccountCode) {
							body.SalesDefaultAccountCode = additionalFields.salesDefaultAccountCode as string;
						}

						if (additionalFields.skypeUserName) {
							body.SkypeUserName = additionalFields.skypeUserName as string;
						}

						if (additionalFields.taxNumber) {
							body.taxNumber = additionalFields.taxNumber as string;
						}

						if (additionalFields.xeroNetworkKey) {
							body.xeroNetworkKey = additionalFields.xeroNetworkKey as string;
						}

						if (phonesUi) {
							const phoneValues = phonesUi?.phonesValues as IDataObject[];
							if (phoneValues) {
								const phones: IPhone[] = [];
								for (const phoneValue of phoneValues) {
									const phone: IPhone = {};
									phone.PhoneType = phoneValue.phoneType as string;
									phone.PhoneNumber = phoneValue.phoneNumber as string;
									phone.PhoneAreaCode = phoneValue.phoneAreaCode as string;
									phone.PhoneCountryCode = phoneValue.phoneCountryCode as string;
									phones.push(phone);
								}
								body.Phones = phones;
							}
						}

						if (addressesUi) {
							const addressValues = addressesUi?.addressesValues as IDataObject[];
							if (addressValues) {
								const addresses: IAddress[] = [];
								for (const addressValue of addressValues) {
									const address: IAddress = {};
									address.AddressType = addressValue.type as string;
									address.AddressLine1 = addressValue.line1 as string;
									address.AddressLine2 = addressValue.line2 as string;
									address.City = addressValue.city as string;
									address.Region = addressValue.region as string;
									address.PostalCode = addressValue.postalCode as string;
									address.Country = addressValue.country as string;
									address.AttentionTo = addressValue.attentionTo as string;
									addresses.push(address);
								}
								body.Addresses = addresses;
							}
						}

						responseData = await xeroApiRequest.call(this, 'POST', '/Contacts', { organizationId, Contacts: [body] });
						responseData = responseData.Contacts;
					}
					if (operation === 'get') {
						const organizationId = this.getNodeParameter('organizationId', i) as string;
						const contactId = this.getNodeParameter('contactId', i) as string;
						responseData = await xeroApiRequest.call(this, 'GET', `/Contacts/${contactId}`, { organizationId });
						responseData = responseData.Contacts;
					}
					if (operation === 'getAll') {
						const organizationId = this.getNodeParameter('organizationId', i) as string;
						const returnAll = this.getNodeParameter('returnAll', i) as boolean;
						const options = this.getNodeParameter('options', i) as IDataObject;
						if (options.includeArchived) {
							qs.includeArchived = options.includeArchived as boolean;
						}
						if (options.orderBy) {
							qs.order = `${options.orderBy} ${(options.sortOrder === undefined) ? 'DESC' : options.sortOrder}`;
						}
						if (options.where) {
							qs.where = options.where;
						}
						if (returnAll) {
							responseData = await xeroApiRequestAllItems.call(this, 'Contacts', 'GET', '/Contacts', { organizationId }, qs);
						} else {
							const limit = this.getNodeParameter('limit', i) as number;
							responseData = await xeroApiRequest.call(this, 'GET', `/Contacts`, { organizationId }, qs);
							responseData = responseData.Contacts;
							responseData = responseData.splice(0, limit);
						}

					}
					if (operation === 'update') {
						const organizationId = this.getNodeParameter('organizationId', i) as string;
						const contactId = this.getNodeParameter('contactId', i) as string;
						const updateFields = this.getNodeParameter('updateFields', i) as IDataObject;
						const addressesUi = updateFields.addressesUi as IDataObject;
						const phonesUi = updateFields.phonesUi as IDataObject;

						const body: IContact = {};

						if (updateFields.accountNumber) {
							body.AccountNumber = updateFields.accountNumber as string;
						}

						if (updateFields.name) {
							body.Name = updateFields.name as string;
						}

						if (updateFields.bankAccountDetails) {
							body.BankAccountDetails = updateFields.bankAccountDetails as string;
						}

						if (updateFields.contactNumber) {
							body.ContactNumber = updateFields.contactNumber as string;
						}

						if (updateFields.contactStatus) {
							body.ContactStatus = updateFields.contactStatus as string;
						}

						if (updateFields.defaultCurrency) {
							body.DefaultCurrency = updateFields.defaultCurrency as string;
						}

						if (updateFields.emailAddress) {
							body.EmailAddress = updateFields.emailAddress as string;
						}

						if (updateFields.firstName) {
							body.FirstName = updateFields.firstName as string;
						}

						if (updateFields.lastName) {
							body.LastName = updateFields.lastName as string;
						}

						if (updateFields.purchasesDefaultAccountCode) {
							body.PurchasesDefaultAccountCode = updateFields.purchasesDefaultAccountCode as string;
						}

						if (updateFields.salesDefaultAccountCode) {
							body.SalesDefaultAccountCode = updateFields.salesDefaultAccountCode as string;
						}

						if (updateFields.skypeUserName) {
							body.SkypeUserName = updateFields.skypeUserName as string;
						}

						if (updateFields.taxNumber) {
							body.taxNumber = updateFields.taxNumber as string;
						}

						if (updateFields.xeroNetworkKey) {
							body.xeroNetworkKey = updateFields.xeroNetworkKey as string;
						}

						if (phonesUi) {
							const phoneValues = phonesUi?.phonesValues as IDataObject[];
							if (phoneValues) {
								const phones: IPhone[] = [];
								for (const phoneValue of phoneValues) {
									const phone: IPhone = {};
									phone.PhoneType = phoneValue.phoneType as string;
									phone.PhoneNumber = phoneValue.phoneNumber as string;
									phone.PhoneAreaCode = phoneValue.phoneAreaCode as string;
									phone.PhoneCountryCode = phoneValue.phoneCountryCode as string;
									phones.push(phone);
								}
								body.Phones = phones;
							}
						}

						if (addressesUi) {
							const addressValues = addressesUi?.addressesValues as IDataObject[];
							if (addressValues) {
								const addresses: IAddress[] = [];
								for (const addressValue of addressValues) {
									const address: IAddress = {};
									address.AddressType = addressValue.type as string;
									address.AddressLine1 = addressValue.line1 as string;
									address.AddressLine2 = addressValue.line2 as string;
									address.City = addressValue.city as string;
									address.Region = addressValue.region as string;
									address.PostalCode = addressValue.postalCode as string;
									address.Country = addressValue.country as string;
									address.AttentionTo = addressValue.attentionTo as string;
									addresses.push(address);
								}
								body.Addresses = addresses;
							}
						}

						responseData = await xeroApiRequest.call(this, 'POST', `/Contacts/${contactId}`, { organizationId, Contacts: [body] });
						responseData = responseData.Contacts;
					}
				}
				if (Array.isArray(responseData)) {
					returnData.push.apply(returnData, responseData as IDataObject[]);
				} else {
					returnData.push(responseData as IDataObject);
				}
			} catch (error) {
				if (this.continueOnFail()) {
					returnData.push({ error: (error as JsonObject).message });
					continue;
				}
				throw error;
			}
		}
		return [this.helpers.returnJsonArray(returnData)];
	}
}