import { Authorized, Body, Delete, Get, JsonController, OnUndefined, Param, Post, Put } from 'routing-controllers';
import { OpenAPI, ResponseSchema } from 'routing-controllers-openapi';
import { getConnectionManager, Repository } from 'typeorm';
import { EntityFromBody } from 'typeorm-routing-controllers-extensions';
import { TrackIdsNotMatchingError, TrackNotFoundError } from "../errors/TrackErrors";
import { CreateTrack } from '../models/actions/CreateTrack';
import { Track } from '../models/entities/Track';
import { ResponseEmpty } from '../models/responses/ResponseEmpty';
import { ResponseTrack } from '../models/responses/ResponseTrack';

@JsonController('/tracks')
@OpenAPI({ security: [{ "AuthToken": [] }] })
export class TrackController {
	private trackRepository: Repository<Track>;

	/**
	 * Gets the repository of this controller's model/entity.
	 */
	constructor() {
		this.trackRepository = getConnectionManager().get().getRepository(Track);
	}

	@Get()
	@Authorized("TRACK:GET")
	@ResponseSchema(ResponseTrack, { isArray: true })
	async getAll() {
		let responseTracks: ResponseTrack[] = new Array<ResponseTrack>();
		const tracks = await this.trackRepository.find();
		tracks.forEach(track => {
			responseTracks.push(new ResponseTrack(track));
		});
		return responseTracks;
	}

	@Get('/:id')
	@Authorized("TRACK:GET")
	@ResponseSchema(ResponseTrack)
	@ResponseSchema(TrackNotFoundError, { statusCode: 404 })
	@OnUndefined(TrackNotFoundError)
	@OpenAPI({ description: "Returns a track of a specified id (if it exists)" })
	async getOne(@Param('id') id: number) {
		let track = await this.trackRepository.findOne({ id: id });
		if (!track) { throw new TrackNotFoundError(); }
		return new ResponseTrack(track);
	}

	@Post()
	@Authorized("TRACK:CREATE")
	@ResponseSchema(ResponseTrack)
	@OpenAPI({ description: "Create a new track object (id will be generated automagicly)." })
	async post(
		@Body({ validate: true })
		track: CreateTrack
	) {
		return new ResponseTrack(await this.trackRepository.save(track.toTrack()));
	}

	@Put('/:id')
	@Authorized("TRACK:UPDATE")
	@ResponseSchema(ResponseTrack)
	@ResponseSchema(TrackNotFoundError, { statusCode: 404 })
	@ResponseSchema(TrackIdsNotMatchingError, { statusCode: 406 })
	@OpenAPI({ description: "Update a track object (id can't be changed)." })
	async put(@Param('id') id: number, @EntityFromBody() track: Track) {
		let oldTrack = await this.trackRepository.findOne({ id: id });

		if (!oldTrack) {
			throw new TrackNotFoundError();
		}

		if (oldTrack.id != track.id) {
			throw new TrackIdsNotMatchingError();
		}

		await this.trackRepository.save(track);
		return new ResponseTrack(track);
	}

	@Delete('/:id')
	@Authorized("TRACK:DELETE")
	@ResponseSchema(ResponseTrack)
	@ResponseSchema(ResponseEmpty, { statusCode: 204 })
	@OnUndefined(204)
	@OpenAPI({ description: "Delete a specified track (if it exists)." })
	async remove(@Param("id") id: number) {
		let track = await this.trackRepository.findOne({ id: id });
		if (!track) { return null; }

		await this.trackRepository.delete(track);
		return new ResponseTrack(track);
	}
}