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

import { collectionFields, collectionOperations } from './CollectionDescription';
import { documentFields, documentOperations } from './DocumentDescription';
import {
	fullDocumentToJson,
	googleApiRequest,
	googleApiRequestAllItems,
	jsonToDocument,
} from './GenericFunctions';
import { generatePairedItemData } from '../../../../utils/utilities';

export class GoogleFirebaseCloudFirestore implements INodeType {
	description: INodeTypeDescription = {
		displayName: 'Google Cloud Firestore',
		name: 'googleFirebaseCloudFirestore',
		// eslint-disable-next-line n8n-nodes-base/node-class-description-icon-not-svg
		icon: 'file:googleFirebaseCloudFirestore.png',
		group: ['input'],
		version: [1, 1.1],
		subtitle: '={{$parameter["resource"] + ": " + $parameter["operation"]}}',
		description: 'Interact with Google Firebase - Cloud Firestore API',
		defaults: {
			name: 'Google Cloud Firestore',
		},
		usableAsTool: true,
		inputs: [NodeConnectionType.Main],
		outputs: [NodeConnectionType.Main],
		credentials: [
			{
				name: 'googleFirebaseCloudFirestoreOAuth2Api',
				required: true,
				displayOptions: {
					show: {
						authentication: ['googleFirebaseCloudFirestoreOAuth2Api'],
					},
				},
			},
			{
				name: 'googleApi',
				required: true,
				displayOptions: {
					show: {
						authentication: ['serviceAccount'],
					},
				},
			},
		],
		properties: [
			{
				displayName: 'Authentication',
				name: 'authentication',
				type: 'options',
				options: [
					{
						// eslint-disable-next-line n8n-nodes-base/node-param-display-name-miscased
						name: 'OAuth2 (recommended)',
						value: 'googleFirebaseCloudFirestoreOAuth2Api',
					},
					{
						name: 'Service Account',
						value: 'serviceAccount',
					},
				],
				default: 'googleFirebaseCloudFirestoreOAuth2Api',
			},
			{
				displayName: 'Resource',
				name: 'resource',
				type: 'options',
				noDataExpression: true,
				options: [
					{
						name: 'Document',
						value: 'document',
					},
					{
						name: 'Collection',
						value: 'collection',
					},
				],
				default: 'document',
			},
			...documentOperations,
			...documentFields,
			...collectionOperations,
			...collectionFields,
		],
	};

	methods = {
		loadOptions: {
			async getProjects(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const collections = await googleApiRequestAllItems.call(
					this,
					'results',
					'GET',
					'',
					{},
					{},
					'https://firebase.googleapis.com/v1beta1/projects',
				);
				// @ts-ignore
				const returnData = collections.map((o) => ({
					name: o.projectId,
					value: o.projectId,
				})) as INodePropertyOptions[];
				return returnData;
			},
		},
	};

	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
		const items = this.getInputData();
		const itemData = generatePairedItemData(items.length);
		const returnData: INodeExecutionData[] = [];
		let responseData;

		const resource = this.getNodeParameter('resource', 0);
		const operation = this.getNodeParameter('operation', 0);

		const nodeVersion = this.getNode().typeVersion;

		let itemsLength = items.length ? 1 : 0;
		let fallbackPairedItems;

		if (nodeVersion >= 1.1) {
			itemsLength = items.length;
		} else {
			fallbackPairedItems = generatePairedItemData(items.length);
		}

		if (resource === 'document') {
			if (operation === 'get') {
				const projectId = this.getNodeParameter('projectId', 0) as string;
				const database = this.getNodeParameter('database', 0) as string;
				const simple = this.getNodeParameter('simple', 0) as boolean;
				const documentList = items.map((_: IDataObject, i: number) => {
					const collection = this.getNodeParameter('collection', i) as string;
					const documentId = this.getNodeParameter('documentId', i) as string;
					return `projects/${projectId}/databases/${database}/documents/${collection}/${documentId}`;
				});

				responseData = await googleApiRequest.call(
					this,
					'POST',
					`/${projectId}/databases/${database}/documents:batchGet`,
					{ documents: documentList },
				);

				responseData = responseData.map((element: { found: { id: string; name: string } }) => {
					if (element.found) {
						element.found.id = element.found.name.split('/').pop() as string;
					}
					return element;
				});

				if (simple) {
					responseData = responseData
						.map((element: IDataObject) => {
							return fullDocumentToJson(element.found as IDataObject);
						})
						.filter((el: IDataObject) => !!el);
				}

				const executionData = this.helpers.constructExecutionMetaData(
					this.helpers.returnJsonArray(responseData as IDataObject[]),
					{ itemData },
				);

				returnData.push(...executionData);
			} else if (operation === 'create') {
				const projectId = this.getNodeParameter('projectId', 0) as string;
				const database = this.getNodeParameter('database', 0) as string;
				const simple = this.getNodeParameter('simple', 0) as boolean;

				await Promise.all(
					items.map(async (item: IDataObject, i: number) => {
						const collection = this.getNodeParameter('collection', i) as string;
						const columns = this.getNodeParameter('columns', i) as string;
						const documentId = this.getNodeParameter('documentId', i) as string;
						const columnList = columns.split(',').map((column) => column.trim());
						const document = { fields: {} };
						columnList.map((column) => {
							// @ts-ignore
							if (item.json[column]) {
								// @ts-ignore
								document.fields[column] = jsonToDocument(item.json[column] as IDataObject);
							} else {
								// @ts-ignore
								document.fields[column] = jsonToDocument(null);
							}
						});
						responseData = await googleApiRequest.call(
							this,
							'POST',
							`/${projectId}/databases/${database}/documents/${collection}`,
							document,
							{ documentId },
						);

						responseData.id = (responseData.name as string).split('/').pop();

						if (simple) {
							responseData = fullDocumentToJson(responseData as IDataObject);
						}

						const executionData = this.helpers.constructExecutionMetaData(
							this.helpers.returnJsonArray(responseData as IDataObject[]),
							{ itemData: { item: i } },
						);

						returnData.push(...executionData);
					}),
				);
			} else if (operation === 'getAll') {
				for (let i = 0; i < itemsLength; i++) {
					try {
						const projectId = this.getNodeParameter('projectId', i) as string;
						const database = this.getNodeParameter('database', i) as string;
						const collection = this.getNodeParameter('collection', i) as string;
						const returnAll = this.getNodeParameter('returnAll', i);
						const simple = this.getNodeParameter('simple', i) as boolean;

						if (returnAll) {
							responseData = await googleApiRequestAllItems.call(
								this,
								'documents',
								'GET',
								`/${projectId}/databases/${database}/documents/${collection}`,
							);
						} else {
							const limit = this.getNodeParameter('limit', i);
							const getAllResponse = (await googleApiRequest.call(
								this,
								'GET',
								`/${projectId}/databases/${database}/documents/${collection}`,
								{},
								{ pageSize: limit },
							)) as IDataObject;
							responseData = getAllResponse.documents;
						}

						responseData = responseData.map((element: IDataObject) => {
							element.id = (element.name as string).split('/').pop();
							return element;
						});

						if (simple) {
							responseData = responseData.map((element: IDataObject) =>
								fullDocumentToJson(element),
							);
						}

						const executionData = this.helpers.constructExecutionMetaData(
							this.helpers.returnJsonArray(responseData as IDataObject[]),
							{ itemData: fallbackPairedItems ?? [{ item: i }] },
						);

						returnData.push(...executionData);
					} catch (error) {
						if (this.continueOnFail()) {
							returnData.push({
								json: { error: error.message },
								pairedItem: fallbackPairedItems ?? [{ item: i }],
							});
							continue;
						}
						throw error;
					}
				}
			} else if (operation === 'delete') {
				await Promise.all(
					items.map(async (_: IDataObject, i: number) => {
						const projectId = this.getNodeParameter('projectId', i) as string;
						const database = this.getNodeParameter('database', i) as string;
						const collection = this.getNodeParameter('collection', i) as string;
						const documentId = this.getNodeParameter('documentId', i) as string;

						await googleApiRequest.call(
							this,
							'DELETE',
							`/${projectId}/databases/${database}/documents/${collection}/${documentId}`,
						);

						const executionData = this.helpers.constructExecutionMetaData(
							this.helpers.returnJsonArray({ success: true }),
							{ itemData: { item: i } },
						);

						returnData.push(...executionData);
					}),
				);
			} else if (operation === 'upsert') {
				const projectId = this.getNodeParameter('projectId', 0) as string;
				const database = this.getNodeParameter('database', 0) as string;

				const updates = items.map((item: IDataObject, i: number) => {
					const collection = this.getNodeParameter('collection', i) as string;
					const updateKey = this.getNodeParameter('updateKey', i) as string;
					// @ts-ignore
					const documentId = item.json[updateKey] as string;
					const columns = this.getNodeParameter('columns', i) as string;
					const columnList = columns.split(',').map((column) => column.trim());
					const document = {};
					columnList.map((column) => {
						// @ts-ignore
						if (item.json.hasOwnProperty(column)) {
							// @ts-ignore
							document[column] = jsonToDocument(item.json[column] as IDataObject);
						} else {
							// @ts-ignore
							document[column] = jsonToDocument(null);
						}
					});

					return {
						update: {
							name: `projects/${projectId}/databases/${database}/documents/${collection}/${documentId}`,
							fields: document,
						},
						updateMask: {
							fieldPaths: columnList,
						},
					};
				});

				responseData = [];

				const { writeResults, status } = await googleApiRequest.call(
					this,
					'POST',
					`/${projectId}/databases/${database}/documents:batchWrite`,
					{ writes: updates },
				);

				for (let i = 0; i < writeResults.length; i++) {
					writeResults[i].status = status[i];
					Object.assign(writeResults[i], items[i].json);

					const executionData = this.helpers.constructExecutionMetaData(
						this.helpers.returnJsonArray(writeResults[i] as IDataObject[]),
						{ itemData: { item: i } },
					);

					returnData.push(...executionData);
				}
			} else if (operation === 'query') {
				const projectId = this.getNodeParameter('projectId', 0) as string;
				const database = this.getNodeParameter('database', 0) as string;
				const simple = this.getNodeParameter('simple', 0) as boolean;

				await Promise.all(
					items.map(async (_: IDataObject, i: number) => {
						const query = this.getNodeParameter('query', i) as string;
						responseData = await googleApiRequest.call(
							this,
							'POST',
							`/${projectId}/databases/${database}/documents:runQuery`,
							jsonParse(query),
						);

						responseData = responseData.map(
							(element: { document: { id: string; name: string } }) => {
								if (element.document) {
									element.document.id = element.document.name.split('/').pop() as string;
								}
								return element;
							},
						);

						if (simple) {
							responseData = responseData
								.map((element: IDataObject) => {
									return fullDocumentToJson(element.document as IDataObject);
								})
								.filter((element: IDataObject) => !!element);
						}

						const executionData = this.helpers.constructExecutionMetaData(
							this.helpers.returnJsonArray(responseData as IDataObject[]),
							{ itemData: { item: i } },
						);

						returnData.push(...executionData);
					}),
				);
			}
		} else if (resource === 'collection') {
			if (operation === 'getAll') {
				for (let i = 0; i < itemsLength; i++) {
					try {
						const projectId = this.getNodeParameter('projectId', i) as string;
						const database = this.getNodeParameter('database', i) as string;
						const returnAll = this.getNodeParameter('returnAll', i);

						if (returnAll) {
							const getAllResponse = await googleApiRequestAllItems.call(
								this,
								'collectionIds',
								'POST',
								`/${projectId}/databases/${database}/documents:listCollectionIds`,
							);
							// @ts-ignore
							responseData = getAllResponse.map((o) => ({ name: o }));
						} else {
							const limit = this.getNodeParameter('limit', i);
							const getAllResponse = (await googleApiRequest.call(
								this,
								'POST',
								`/${projectId}/databases/${database}/documents:listCollectionIds`,
								{},
								{ pageSize: limit },
							)) as IDataObject;
							// @ts-ignore
							responseData = getAllResponse.collectionIds.map((o) => ({ name: o }));
						}

						const executionData = this.helpers.constructExecutionMetaData(
							this.helpers.returnJsonArray(responseData as IDataObject[]),
							{ itemData: fallbackPairedItems ?? [{ item: i }] },
						);

						returnData.push(...executionData);
					} catch (error) {
						if (this.continueOnFail()) {
							returnData.push({
								json: { error: error.message },
								pairedItem: fallbackPairedItems ?? [{ item: i }],
							});
							continue;
						}
						throw error;
					}
				}
			}
		}

		return [returnData];
	}
}