"use strict";
import { isNil, map } from "lodash";
import {
	Context,
	Service,
	ServiceBroker,
	ServiceSchema,
	Errors,
} from "moleculer";
import { DbMixin } from "../mixins/db.mixin";
import Comic from "../models/comic.model";
import { walkFolder } from "../utils/file.utils";
import { convertXMLToJSON } from "../utils/xml.utils";
import https from "https";
import { logger } from "../utils/logger.utils";
import {
	IExtractComicBookCoverErrorResponse,
	IExtractedComicBookCoverFile,
	IExtractionOptions,
} from "threetwo-ui-typings";
import {
	extractCoverFromFile,
	unrarArchive,
} from "../utils/uncompression.utils";
import {scrapeIssuesFromDOM} from "../utils/scraping.utils";
const ObjectId = require("mongoose").Types.ObjectId;

export default class ImportService extends Service {
	public constructor(
		public broker: ServiceBroker,
		schema: ServiceSchema<{}> = { name: "import" }
	) {
		super(broker);
		this.parseServiceSchema(
			Service.mergeSchemas(
				{
					name: "import",
					mixins: [DbMixin("comics", Comic)],
					settings: {
						// Available fields in the responses
						fields: ["_id", "name", "quantity", "price"],

						// Validator for the `create` & `insert` actions.
						entityValidator: {
							name: "string|min:3",
							price: "number|positive",
						},
					},
					hooks: {},
					actions: {
						walkFolders: {
							rest: "POST /walkFolders",
							params: {
								basePathToWalk: "string",
							},
							async handler(
								ctx: Context<{ basePathToWalk: string }>
							) {
								return await walkFolder(
									ctx.params.basePathToWalk,
									[".cbz", ".cbr"],
								);
							},
						},
						convertXMLToJSON: {
							rest: "POST /convertXmlToJson",
							params: {},
							async handler(ctx: Context<{}>) {
								return convertXMLToJSON("lagos");
							},
						},
						processAndImportToDB: {
							rest: "POST /processAndImportToDB",
							
							params: {},
							async handler(
								ctx: Context<{
									extractionOptions: any;
									walkedFolders: 
										{
											name: string;
											path: string;
											extension: string;
											containedIn: string;
											fileSize: number;
											isFile: boolean;
											isLink: boolean;
										};
								}>
							) {
								try {
									const { extractionOptions, walkedFolders } =
										ctx.params;
										let comicExists = await Comic.exists({
											"rawFileDetails.name": `${walkedFolders.name}`,
										});
										if (!comicExists) {
											// 1. Extract cover and cover metadata
											let comicBookCoverMetadata:
												| IExtractedComicBookCoverFile
												| IExtractComicBookCoverErrorResponse
												| IExtractedComicBookCoverFile[] =
												await extractCoverFromFile(
													extractionOptions,
													walkedFolders
												);
											
											// 2. Add to mongo
											const dbImportResult =
												await this.broker.call(
													"import.rawImportToDB",
													{
														importStatus: {
															isImported: true,
															tagged: false,
															matchedResult: {
																score: "0",
															},
														},
														rawFileDetails:
															comicBookCoverMetadata,
														sourcedMetadata: {
															comicvine: {},
														},
													},
													{}
												);
											
												return { comicBookCoverMetadata, dbImportResult };
										} else {
											logger.info(
												`Comic: \"${walkedFolders.name}\" already exists in the database`
											);
										}
								} catch (error) {
									logger.error(
										"Error importing comic books",
										error
									);
								}
							},
						},
						rawImportToDB: {
							rest: "POST /rawImportToDB",
							params: {},
							async handler(
								ctx: Context<{
									sourcedMetadata: {
										comicvine: {
											volume: { api_detail_url: string };
											volumeInformation: {};
										};
									};
									rawFileDetails: {
										name: string;
									};
								}>
							) {
								let volumeDetails;
								const comicMetadata = ctx.params;
								if (
									comicMetadata.sourcedMetadata.comicvine &&
									!isNil(
										comicMetadata.sourcedMetadata.comicvine
											.volume
									)
								) {
									volumeDetails =
										await this.getComicVineVolumeMetadata(
											comicMetadata.sourcedMetadata
												.comicvine.volume.api_detail_url
										);
									comicMetadata.sourcedMetadata.comicvine.volumeInformation =
										volumeDetails;
								}
								return new Promise(async (resolve, reject) => {
									Comic.create(ctx.params, (error, data) => {
										if (data) {
											resolve(data);
										} else if (error) {
											throw new Errors.MoleculerError(
												"Failed to import comic book",
												400,
												"IMS_FAILED_COMIC_BOOK_IMPORT",
												data
											);
										}
									});
								});
							},
						},
						applyComicVineMetadata: {
							rest: "POST /applyComicVineMetadata",
							params: {},
							async handler(
								ctx: Context<{
									match: {
										volume: { api_detail_url: string };
										volumeInformation: object;
									};
									comicObjectId: string;
								}>
							) {
								// 1. Find mongo object by id
								// 2. Import payload into sourcedMetadata.comicvine
								const comicObjectId = new ObjectId(
									ctx.params.comicObjectId
								);
								const matchedResult = ctx.params.match;
								let volumeDetailsPromise;
								if (!isNil(matchedResult.volume)) {
									volumeDetailsPromise =
										this.getComicVineVolumeMetadata(
											matchedResult.volume.api_detail_url
										);
								}
								return new Promise(async (resolve, reject) => {
									const volumeDetails =
										await volumeDetailsPromise;
									matchedResult.volumeInformation =
										volumeDetails;
									Comic.findByIdAndUpdate(
										comicObjectId,
										{
											sourcedMetadata: {
												comicvine: matchedResult,
											},
										},
										{ new: true },
										(err, result) => {
											if (err) {
												console.log(err);
												reject(err);
											} else {
												// 3. Fetch and append volume information
												resolve(result);
											}
										}
									);
								});
							},
						},
						applyAirDCPPDownloadMetadata: {
							rest: "POST /applyAirDCPPDownloadMetadata",
							params: {},
							async handler(
								ctx: Context<{
									comicObjectId: string;
									resultId: string;
									bundleId: string;
									directoryIds: [];
									searchInstanceId: string;
								}>
							) {
								const comicObjectId = new ObjectId(
									ctx.params.comicObjectId
								);
								return new Promise((resolve, reject) => {
									Comic.findByIdAndUpdate(
										comicObjectId,
										{
											$push: {
												"acquisition.directconnect": {
													resultId:
														ctx.params.resultId,
													bundleId:
														ctx.params.bundleId,
													directoryIds:
														ctx.params.directoryIds,
													searchInstanceId:
														ctx.params
															.searchInstanceId,
												},
											},
										},
										{ new: true, safe: true, upsert: true },
										(err, result) => {
											if (err) {
												reject(err);
											} else {
												resolve(result);
											}
										}
									);
								});
							},
						},

						getComicBooks: {
							rest: "POST /getComicBooks",
							params: {},
							async handler(
								ctx: Context<{ paginationOptions: object }>
							) {
								return await Comic.paginate(
									{},
									ctx.params.paginationOptions
								);
							},
						},
						getComicBookById: {
							rest: "POST /getComicBookById",
							params: { id: "string" },
							async handler(ctx: Context<{ id: string }>) {
								return await Comic.findById(ctx.params.id);
							},
						},
						getComicBookGroups: {
							rest: "GET /getComicBookGroups",
							params: {},
							async handler(ctx: Context<{}>) {
								let volumesMetadata = [];
								// 1. get volumes with issues mapped where issue count > 2
								const volumes = await Comic.aggregate([
									{
										$group: {
											_id: "$sourcedMetadata.comicvine.volume.id",
											volumeURI: {
												$last: "$sourcedMetadata.comicvine.volume.api_detail_url",
											},
											count: { $sum: 1 },
										},
									},
									{
										$match: {
											count: { $gte: 2 },
										},
									},
									{ $sort: { updatedAt: -1 } },
									{ $skip: 0 },
									{ $limit: 5 },
								]);
								// 2. Map over the aggregation result and get volume metadata from CV
								// 2a. Make a call to comicvine-service
								volumesMetadata = map(
									volumes,
									async (volume) => {
										if (!isNil(volume.volumeURI)) {
											return await ctx.call(
												"comicvine.getVolumes",
												{
													volumeURI: volume.volumeURI,
													data: {
														format: "json",
														fieldList:
															"id,name,deck,api_detail_url",
														limit: "1",
														offset: "0",
													},
												}
											);
										}
									}
								);

								return Promise.all(volumesMetadata);
							},
						},
						scrapeIssueNamesFromDOM: {
							rest: "POST /scrapeIssueNamesFromDOM",
							params: {},
							async handler(ctx: Context<{ html: string}>) {
								return scrapeIssuesFromDOM(ctx.params.html);
							}
						},
						unrarArchive: {
							rest: "POST /unrarArchive",
							params: {},
							timeout: 10000,
							async handler(ctx: Context<{ filePath: string, options: IExtractionOptions,}>) {
								return await unrarArchive(ctx.params.filePath, ctx.params.options);
							}
						}
					},
					methods: {
						getComicVineVolumeMetadata: (apiDetailURL) =>
							new Promise((resolve, reject) => {
								const options = {
									headers: {
										'User-Agent': 'ThreeTwo',
									}
								}
								return https
									.get(
										`${apiDetailURL}?api_key=${process.env.COMICVINE_API_KEY}&format=json&limit=1&offset=0&field_list=id,name,description,image,first_issue,last_issue,publisher,count_of_issues,character_credits,person_credits,aliases`, options,
										(resp) => {
											let data = "";
											resp.on("data", (chunk) => {
												data += chunk;
											});

											resp.on("end", () => {
												const volumeInformation =
													JSON.parse(data);
												resolve(
													volumeInformation.results
												);
											});
										}
									)
									.on("error", (err) => {
										console.log("Error: " + err.message);
										reject(err);
									})
								}
							),
					},
				},
				schema
			)
		);
	}
}