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

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

import { validateJSON, zendeskApiRequest, zendeskApiRequestAllItems } from './GenericFunctions';

import { ticketFields, ticketOperations } from './TicketDescription';

import { ticketFieldFields, ticketFieldOperations } from './TicketFieldDescription';

import { userFields, userOperations } from './UserDescription';

import { organizationFields, organizationOperations } from './OrganizationDescription';

import type { IComment, ITicket } from './TicketInterface';

export class Zendesk implements INodeType {
	description: INodeTypeDescription = {
		displayName: 'Zendesk',
		name: 'zendesk',
		icon: 'file:zendesk.svg',
		group: ['output'],
		version: 1,
		subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
		description: 'Consume Zendesk API',
		defaults: {
			name: 'Zendesk',
		},
		inputs: ['main'],
		outputs: ['main'],
		credentials: [
			{
				name: 'zendeskApi',
				required: true,
				displayOptions: {
					show: {
						authentication: ['apiToken'],
					},
				},
			},
			{
				name: 'zendeskOAuth2Api',
				required: true,
				displayOptions: {
					show: {
						authentication: ['oAuth2'],
					},
				},
			},
		],
		properties: [
			{
				displayName: 'Authentication',
				name: 'authentication',
				type: 'options',
				options: [
					{
						name: 'API Token',
						value: 'apiToken',
					},
					{
						name: 'OAuth2',
						value: 'oAuth2',
					},
				],
				default: 'apiToken',
			},
			{
				displayName: 'Resource',
				name: 'resource',
				type: 'options',
				noDataExpression: true,
				options: [
					{
						name: 'Ticket',
						value: 'ticket',
						description:
							'Tickets are the means through which your end users (customers) communicate with agents in Zendesk Support',
					},
					{
						name: 'Ticket Field',
						value: 'ticketField',
						description: 'Manage system and custom ticket fields',
					},
					{
						name: 'User',
						value: 'user',
						description: 'Manage users',
					},
					{
						name: 'Organization',
						value: 'organization',
						description: 'Manage organizations',
					},
				],
				default: 'ticket',
			},
			// TICKET
			...ticketOperations,
			...ticketFields,
			// TICKET FIELD
			...ticketFieldOperations,
			...ticketFieldFields,
			// USER
			...userOperations,
			...userFields,
			// ORGANIZATION
			...organizationOperations,
			...organizationFields,
		],
	};

	methods = {
		loadOptions: {
			// Get all the custom fields to display them to user so that he can
			// select them easily
			async getCustomFields(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const customFields = [
					'text',
					'textarea',
					'date',
					'integer',
					'decimal',
					'regexp',
					'multiselect',
					'tagger',
				];
				const fields = await zendeskApiRequestAllItems.call(
					this,
					'ticket_fields',
					'GET',
					'/ticket_fields',
				);
				for (const field of fields) {
					if (customFields.includes(field.type)) {
						const fieldName = field.title;
						const fieldId = field.id;
						returnData.push({
							name: fieldName,
							value: fieldId,
						});
					}
				}
				return returnData;
			},
			// Get all the groups to display them to user so that he can
			// select them easily
			async getGroups(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const groups = await zendeskApiRequestAllItems.call(this, 'groups', 'GET', '/groups');
				for (const group of groups) {
					const groupName = group.name;
					const groupId = group.id;
					returnData.push({
						name: groupName,
						value: groupId,
					});
				}
				return returnData;
			},
			// Get all the tags to display them to user so that he can
			// select them easily
			async getTags(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const tags = await zendeskApiRequestAllItems.call(this, 'tags', 'GET', '/tags');
				for (const tag of tags) {
					const tagName = tag.name;
					const tagId = tag.name;
					returnData.push({
						name: tagName,
						value: tagId,
					});
				}
				return returnData;
			},

			// Get all the locales to display them to user so that he can
			// select them easily
			async getLocales(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const locales = await zendeskApiRequestAllItems.call(this, 'locales', 'GET', '/locales');
				for (const locale of locales) {
					const localeName = `${locale.locale} - ${locale.name}`;
					const localeId = locale.locale;
					returnData.push({
						name: localeName,
						value: localeId,
					});
				}
				return returnData;
			},

			// Get all the user fields to display them to user so that he can
			// select them easily
			async getUserFields(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const fields = await zendeskApiRequestAllItems.call(
					this,
					'user_fields',
					'GET',
					'/user_fields',
				);
				for (const field of fields) {
					const fieldName = field.title;
					const fieldId = field.key;
					returnData.push({
						name: fieldName,
						value: fieldId,
					});
				}
				return returnData;
			},

			// Get all the organization fields to display them to the user for easy selection
			async getOrganizationFields(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const fields = await zendeskApiRequestAllItems.call(
					this,
					'organization_fields',
					'GET',
					'/organization_fields',
				);
				for (const field of fields) {
					const fieldName = field.title;
					const fieldId = field.key;
					returnData.push({
						name: fieldName,
						value: fieldId,
					});
				}
				return returnData;
			},

			async getOrganizations(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				const fields = await zendeskApiRequestAllItems.call(
					this,
					'organizations',
					'GET',
					'/organizations',
					{},
					{},
				);
				for (const field of fields) {
					returnData.push({
						name: field.name,
						value: field.id,
					});
				}
				return returnData;
			},
		},
	};

	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
		const items = this.getInputData();
		const returnData: INodeExecutionData[] = [];
		const length = items.length;
		const qs: IDataObject = {};
		let responseData;
		for (let i = 0; i < length; i++) {
			try {
				const resource = this.getNodeParameter('resource', 0);
				const operation = this.getNodeParameter('operation', 0);
				//https://developer.zendesk.com/api-reference/ticketing/introduction/
				if (resource === 'ticket') {
					//https://developer.zendesk.com/rest_api/docs/support/tickets
					if (operation === 'create') {
						const description = this.getNodeParameter('description', i) as string;
						const jsonParameters = this.getNodeParameter('jsonParameters', i);
						const comment: IComment = {
							body: description,
						};
						const body: ITicket = {
							comment,
						};
						if (jsonParameters) {
							const additionalFieldsJson = this.getNodeParameter(
								'additionalFieldsJson',
								i,
							) as string;

							if (additionalFieldsJson !== '') {
								if (validateJSON(additionalFieldsJson) !== undefined) {
									Object.assign(body, JSON.parse(additionalFieldsJson));
								} else {
									throw new NodeOperationError(
										this.getNode(),
										'Additional fields must be a valid JSON',
										{ itemIndex: i },
									);
								}
							}
						} else {
							const additionalFields = this.getNodeParameter('additionalFields', i);

							if (additionalFields.type) {
								body.type = additionalFields.type as string;
							}
							if (additionalFields.externalId) {
								body.external_id = additionalFields.externalId as string;
							}
							if (additionalFields.subject) {
								body.subject = additionalFields.subject as string;
							}
							if (additionalFields.status) {
								body.status = additionalFields.status as string;
							}
							if (additionalFields.recipient) {
								body.recipient = additionalFields.recipient as string;
							}
							if (additionalFields.group) {
								body.group = additionalFields.group as string;
							}
							if (additionalFields.tags) {
								body.tags = additionalFields.tags as string[];
							}
							if (additionalFields.customFieldsUi) {
								body.custom_fields = (additionalFields.customFieldsUi as IDataObject)
									.customFieldsValues as IDataObject[];
							}
						}
						responseData = await zendeskApiRequest.call(this, 'POST', '/tickets', { ticket: body });
						responseData = responseData.ticket;
					}
					//https://developer.zendesk.com/rest_api/docs/support/tickets#update-ticket
					if (operation === 'update') {
						const ticketId = this.getNodeParameter('id', i) as string;
						const jsonParameters = this.getNodeParameter('jsonParameters', i);
						const body: ITicket = {};

						if (jsonParameters) {
							const updateFieldsJson = this.getNodeParameter('updateFieldsJson', i) as string;

							if (updateFieldsJson !== '') {
								if (validateJSON(updateFieldsJson) !== undefined) {
									Object.assign(body, JSON.parse(updateFieldsJson));
								} else {
									throw new NodeOperationError(
										this.getNode(),
										'Additional fields must be a valid JSON',
										{ itemIndex: i },
									);
								}
							}
						} else {
							const updateFields = this.getNodeParameter('updateFields', i);

							if (updateFields.type) {
								body.type = updateFields.type as string;
							}
							if (updateFields.externalId) {
								body.external_id = updateFields.externalId as string;
							}
							if (updateFields.subject) {
								body.subject = updateFields.subject as string;
							}
							if (updateFields.status) {
								body.status = updateFields.status as string;
							}
							if (updateFields.recipient) {
								body.recipient = updateFields.recipient as string;
							}
							if (updateFields.group) {
								body.group = updateFields.group as string;
							}
							if (updateFields.tags) {
								body.tags = updateFields.tags as string[];
							}
							if (updateFields.customFieldsUi) {
								body.custom_fields = (updateFields.customFieldsUi as IDataObject)
									.customFieldsValues as IDataObject[];
							}
							if (updateFields.assigneeEmail) {
								body.assignee_email = updateFields.assigneeEmail as string;
							}
							if (updateFields.internalNote) {
								const comment: IComment = {
									html_body: updateFields.internalNote as string,
									public: false,
								};
								body.comment = comment;
							}

							if (updateFields.publicReply) {
								const comment: IComment = {
									body: updateFields.publicReply as string,
									public: true,
								};
								body.comment = comment;
							}
						}
						responseData = await zendeskApiRequest.call(this, 'PUT', `/tickets/${ticketId}`, {
							ticket: body,
						});
						responseData = responseData.ticket;
					}
					//https://developer.zendesk.com/rest_api/docs/support/tickets#show-ticket
					//https://developer.zendesk.com/api-reference/ticketing/tickets/suspended_tickets/#show-suspended-ticket
					if (operation === 'get') {
						const ticketType = this.getNodeParameter('ticketType', i) as string;
						const ticketId = this.getNodeParameter('id', i) as string;
						const endpoint =
							ticketType === 'regular' ? `/tickets/${ticketId}` : `/suspended_tickets/${ticketId}`;
						responseData = await zendeskApiRequest.call(this, 'GET', endpoint, {});
						responseData = responseData.ticket || responseData.suspended_ticket;
					}
					//https://developer.zendesk.com/rest_api/docs/support/search#list-search-results
					//https://developer.zendesk.com/api-reference/ticketing/tickets/suspended_tickets/#list-suspended-tickets
					if (operation === 'getAll') {
						const ticketType = this.getNodeParameter('ticketType', i) as string;
						const returnAll = this.getNodeParameter('returnAll', i);
						const options = this.getNodeParameter('options', i);
						qs.query = 'type:ticket';
						if (options.query) {
							qs.query += ` ${options.query}`;
						}
						if (options.status) {
							qs.query += ` status:${options.status}`;
						}
						if (options.group) {
							qs.query += ` group:${options.group}`;
						}

						if (options.sortBy) {
							qs.sort_by = options.sortBy;
						}
						if (options.sortOrder) {
							qs.sort_order = options.sortOrder;
						}
						const endpoint = ticketType === 'regular' ? '/search' : '/suspended_tickets';
						const property = ticketType === 'regular' ? 'results' : 'suspended_tickets';
						if (returnAll) {
							responseData = await zendeskApiRequestAllItems.call(
								this,
								property,
								'GET',
								endpoint,
								{},
								qs,
							);
						} else {
							const limit = this.getNodeParameter('limit', i);
							qs.per_page = limit;
							responseData = await zendeskApiRequest.call(this, 'GET', endpoint, {}, qs);
							responseData = responseData.results || responseData.suspended_tickets;
						}
					}
					//https://developer.zendesk.com/rest_api/docs/support/tickets#delete-ticket
					//https://developer.zendesk.com/api-reference/ticketing/tickets/suspended_tickets/#delete-suspended-ticket
					if (operation === 'delete') {
						const ticketType = this.getNodeParameter('ticketType', i) as string;
						const ticketId = this.getNodeParameter('id', i) as string;
						const endpoint =
							ticketType === 'regular' ? `/tickets/${ticketId}` : `/suspended_tickets/${ticketId}`;
						responseData = await zendeskApiRequest.call(this, 'DELETE', endpoint, {});
						responseData = { success: true };
					}
					//https://developer.zendesk.com/api-reference/ticketing/tickets/suspended_tickets/#recover-suspended-ticket
					if (operation === 'recover') {
						const ticketId = this.getNodeParameter('id', i) as string;
						try {
							responseData = await zendeskApiRequest.call(
								this,
								'PUT',
								`/suspended_tickets/${ticketId}/recover`,
								{},
							);
							responseData = responseData.ticket;
						} catch (error) {
							throw new NodeApiError(this.getNode(), error);
						}
					}
				}
				//https://developer.zendesk.com/api-reference/ticketing/tickets/ticket_fields/
				if (resource === 'ticketField') {
					//https://developer.zendesk.com/rest_api/docs/support/tickets#show-ticket
					if (operation === 'get') {
						const ticketFieldId = this.getNodeParameter('ticketFieldId', i) as string;
						responseData = await zendeskApiRequest.call(
							this,
							'GET',
							`/ticket_fields/${ticketFieldId}`,
							{},
						);
						responseData = responseData.ticket_field;
					}
					//https://developer.zendesk.com/rest_api/docs/support/ticket_fields#list-ticket-fields
					if (operation === 'getAll') {
						const returnAll = this.getNodeParameter('returnAll', i);
						if (returnAll) {
							responseData = await zendeskApiRequestAllItems.call(
								this,
								'ticket_fields',
								'GET',
								'/ticket_fields',
								{},
								qs,
							);
						} else {
							const limit = this.getNodeParameter('limit', i);
							qs.limit = limit;
							responseData = await zendeskApiRequestAllItems.call(
								this,
								'ticket_fields',
								'GET',
								'/ticket_fields',
								{},
								qs,
							);
							responseData = responseData.slice(0, limit);
						}
					}
				}
				//https://developer.zendesk.com/api-reference/ticketing/users/users/
				if (resource === 'user') {
					//https://developer.zendesk.com/api-reference/ticketing/users/users/#create-user
					if (operation === 'create') {
						const name = this.getNodeParameter('name', i) as string;
						const additionalFields = this.getNodeParameter('additionalFields', i);

						const body: IDataObject = {
							name,
						};

						Object.assign(body, additionalFields);

						if (body.userFieldsUi) {
							const userFieldsUI = (body.userFieldsUi as IDataObject)
								.userFieldValues as IDataObject[];
							if (userFieldsUI) {
								body.user_fields = {};
								for (const userField of userFieldsUI) {
									//@ts-ignore
									body.user_fields[userField.field] = userField.value;
								}
								delete body.userFieldsUi;
							}
						}
						responseData = await zendeskApiRequest.call(this, 'POST', '/users', { user: body });
						responseData = responseData.user;
					}
					//https://developer.zendesk.com/api-reference/ticketing/users/users/#update-user
					if (operation === 'update') {
						const userId = this.getNodeParameter('id', i) as string;
						const updateFields = this.getNodeParameter('updateFields', i);

						const body: IDataObject = {};

						Object.assign(body, updateFields);

						if (body.userFieldsUi) {
							const userFieldsUI = (body.userFieldsUi as IDataObject)
								.userFieldValues as IDataObject[];
							if (userFieldsUI) {
								body.user_fields = {};
								for (const userField of userFieldsUI) {
									//@ts-ignore
									body.user_fields[userField.field] = userField.value;
								}
								delete body.userFieldsUi;
							}
						}

						responseData = await zendeskApiRequest.call(this, 'PUT', `/users/${userId}`, {
							user: body,
						});
						responseData = responseData.user;
					}
					//https://developer.zendesk.com/api-reference/ticketing/users/users/#show-user
					if (operation === 'get') {
						const userId = this.getNodeParameter('id', i) as string;
						responseData = await zendeskApiRequest.call(this, 'GET', `/users/${userId}`, {});
						responseData = responseData.user;
					}
					//https://developer.zendesk.com/api-reference/ticketing/users/users/#list-users
					if (operation === 'getAll') {
						const returnAll = this.getNodeParameter('returnAll', i);
						const options = this.getNodeParameter('filters', i);

						Object.assign(qs, options);

						if (returnAll) {
							responseData = await zendeskApiRequestAllItems.call(
								this,
								'users',
								'GET',
								'/users',
								{},
								qs,
							);
						} else {
							const limit = this.getNodeParameter('limit', i);
							qs.per_page = limit;
							responseData = await zendeskApiRequest.call(this, 'GET', '/users', {}, qs);
							responseData = responseData.users;
						}
					}
					//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/#list-organizations
					if (operation === 'getOrganizations') {
						const userId = this.getNodeParameter('id', i) as string;
						responseData = await zendeskApiRequest.call(
							this,
							'GET',
							`/users/${userId}/organizations`,
							{},
						);
						responseData = responseData.organizations;
					}
					//https://developer.zendesk.com/api-reference/ticketing/users/users/#search-users
					if (operation === 'search') {
						const returnAll = this.getNodeParameter('returnAll', i);
						const options = this.getNodeParameter('filters', i);

						Object.assign(qs, options);

						if (returnAll) {
							responseData = await zendeskApiRequestAllItems.call(
								this,
								'users',
								'GET',
								'/users/search',
								{},
								qs,
							);
						} else {
							const limit = this.getNodeParameter('limit', i);
							qs.per_page = limit;
							responseData = await zendeskApiRequest.call(this, 'GET', '/users/search', {}, qs);
							responseData = responseData.users;
						}
					}
					//https://developer.zendesk.com/api-reference/ticketing/users/users/#delete-user
					if (operation === 'delete') {
						const userId = this.getNodeParameter('id', i) as string;
						responseData = await zendeskApiRequest.call(this, 'DELETE', `/users/${userId}`, {});
						responseData = responseData.user;
					}
					//https://developer.zendesk.com/api-reference/ticketing/users/users/#show-user-related-information
					if (operation === 'getRelatedData') {
						const userId = this.getNodeParameter('id', i) as string;
						responseData = await zendeskApiRequest.call(
							this,
							'GET',
							`/users/${userId}/related`,
							{},
						);
						responseData = responseData.user_related;
					}
				}
				//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/
				if (resource === 'organization') {
					//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/#create-organization
					if (operation === 'create') {
						const name = this.getNodeParameter('name', i) as string;

						const body: IDataObject & {
							name: string;
							organization_fields?: { [key: string]: object | string };
						} = {
							name,
						};

						const { organizationFieldsUi, ...rest } = this.getNodeParameter(
							'additionalFields',
							i,
						) as IDataObject & {
							organizationFieldsUi?: {
								organizationFieldValues: Array<{ field: string; value: string }>;
							};
						};

						Object.assign(body, rest);

						if (organizationFieldsUi?.organizationFieldValues.length) {
							const organizationFieldsUI = organizationFieldsUi.organizationFieldValues;
							if (organizationFieldsUI.length) {
								body.organization_fields = {};
								for (const organizationField of organizationFieldsUI) {
									body.organization_fields[organizationField.field] = organizationField.value;
								}
							}
						}

						responseData = await zendeskApiRequest.call(this, 'POST', '/organizations', {
							organization: body,
						});
						responseData = responseData.organization;
					}
					//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/#delete-organization
					if (operation === 'delete') {
						const organizationId = this.getNodeParameter('id', i) as string;
						await zendeskApiRequest.call(this, 'DELETE', `/organizations/${organizationId}`, {});
						responseData = { success: true };
					}
					//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/#count-organizations
					if (operation === 'count') {
						responseData = await zendeskApiRequest.call(this, 'GET', '/organizations/count', {});
						responseData = responseData.count;
					}
					//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/#show-organization
					if (operation === 'get') {
						const organizationId = this.getNodeParameter('id', i) as string;
						responseData = await zendeskApiRequest.call(
							this,
							'GET',
							`/organizations/${organizationId}`,
							{},
						);
						responseData = responseData.organization;
					}
					//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/#list-organizations
					if (operation === 'getAll') {
						const returnAll = this.getNodeParameter('returnAll', i);

						if (returnAll) {
							responseData = await zendeskApiRequestAllItems.call(
								this,
								'organizations',
								'GET',
								'/organizations',
								{},
								qs,
							);
						} else {
							const limit = this.getNodeParameter('limit', i);
							qs.per_page = limit;
							responseData = await zendeskApiRequest.call(this, 'GET', '/organizations', {}, qs);
							responseData = responseData.organizations;
						}
					}
					//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/#show-organizations-related-information
					if (operation === 'getRelatedData') {
						const organizationId = this.getNodeParameter('id', i) as string;
						responseData = await zendeskApiRequest.call(
							this,
							'GET',
							`/organizations/${organizationId}/related`,
							{},
						);
						responseData = responseData.organization_related;
					}
					//https://developer.zendesk.com/api-reference/ticketing/organizations/organizations/#update-organization
					if (operation === 'update') {
						const organizationId = this.getNodeParameter('id', i) as string;

						const body: IDataObject & { organization_fields?: { [key: string]: object | string } } =
							{};

						const { organizationFieldsUi, ...rest } = this.getNodeParameter(
							'updateFields',
							i,
						) as IDataObject & {
							organizationFieldsUi?: {
								organizationFieldValues: Array<{ field: string; value: string }>;
							};
						};

						Object.assign(body, rest);

						if (organizationFieldsUi?.organizationFieldValues.length) {
							const organizationFieldsUI = organizationFieldsUi.organizationFieldValues;
							if (organizationFieldsUI.length) {
								body.organization_fields = {};
								for (const organizationField of organizationFieldsUI) {
									body.organization_fields[organizationField.field] = organizationField.value;
								}
							}
						}

						responseData = await zendeskApiRequest.call(
							this,
							'PUT',
							`/organizations/${organizationId}`,
							{ organization: body },
						);
						responseData = responseData.organization;
					}
				}
				const executionData = this.helpers.constructExecutionMetaData(
					this.helpers.returnJsonArray(responseData),
					{ itemData: { item: i } },
				);
				returnData.push(...executionData);
			} catch (error) {
				if (this.continueOnFail()) {
					returnData.push({ json: { error: error.message } });
					continue;
				}
				throw error;
			}
		}
		return this.prepareOutputData(returnData);
	}
}