import RequestWrapper from './Request'
import { Serie, Set, Card, CardResume, SerieList, SetList, SupportedLanguages, StringEndpoint } from './interfaces'

type Endpoint = 'cards' | 'categories' | 'hp' | 'illustrators' | 'rarities' | 'retreats' | 'series' | 'sets' | 'types'

const ENDPOINTS: Array<Endpoint> = ['cards', 'categories', 'hp', 'illustrators', 'rarities', 'retreats', 'series', 'sets', 'types']
const BASE_URL = 'https://api.tcgdex.net/v2'

export default class TCGdex {
	/**
	 * @deprecated to change the lang use `this.lang`
	 */
	public static defaultLang: SupportedLanguages = "en"

	public constructor(public lang?: SupportedLanguages) {}

	public getLang() {
		return this.lang ?? TCGdex.defaultLang ?? 'en'
	}

	/**
	 * Shortcut to easily fetch a card using both it's global id and it's local ID
	 * @param id the card global/local ID
	 * @param set the card set name/ID (optionnal)
	 * @returns the card object
	 */
	public async fetchCard(id: string | number, set?: string): Promise<Card | undefined> {
		const path = set ? ['sets', set] : ['cards']
		// @ts-expect-error the base endpoint is 'sets' or 'cards'
		return this.fetch(...path, id)
	}

	/**
	 * Shortcut to easily fetch cards using an optionnal set name/ID
	 * @param set the card set name/ID (optionnal)
	 * @returns a card list
	 */
	public async fetchCards(set?: string): Promise<Array<CardResume> | undefined> {
		if (set) {
			const fSet = await this.fetch('sets', set)
			return fSet ? fSet.cards : undefined
		}
		return this.fetch('cards')
	}

	/**
	 * @deprecated use `this.fetch('sets', set)`
	 */
	public async fetchSet(set: string) {
		return this.fetch('sets', set)
	}

	/**
	 * @deprecated use `this.fetch('series', serie)`
	 */
	public async fetchSerie(serie: string): Promise<Serie | undefined> {
		return this.fetch('series', serie)
	}

	/**
	 * @deprecated use `this.fetch('series')`
	 */
	public async fetchSeries(): Promise<SerieList | undefined> {
		return this.fetch('series')
	}

	/**
	 * Shortcut to easily fetch sets using an optionnal serie name/ID
	 * @param serie the card set name/ID (optionnal)
	 * @returns a card list
	 */
	public async fetchSets(serie?: string): Promise<SetList | undefined> {
		if (serie) {
			const fSerie = await this.fetch('series', serie)
			return fSerie ? fSerie.sets : undefined
		}
		return this.fetch('sets')
	}

	/**
	 * Fetch a card using its global id
	 * @param endpoint_0 'cards'
	 * @param endpoint_1 {string} the card global ID
	 */
	public async fetch(...type: ['cards', string]): Promise<Card | undefined>
	/**
	 * Fetch every cards in the database
	 * @param endpoint_0 'cards'
	 */
	public async fetch(type: 'cards'): Promise<Array<CardResume> | undefined>
	/**
	 * Fetch a card using its local id and its set
	 * @param endpoint_0 'sets'
	 * @param endpoint_1 {string} the set name or ID
	 * @param endpoint_2 {string} the card local ID
	 */
	public async fetch(...endpoint: ['sets', string, string]): Promise<Card | undefined>
	/**
	 * Fetch a set
	 * @param endpoint_0 'sets'
	 * @param endpoint_1 {string} the set name or ID
	 */
	public async fetch(...endpoint: ['sets', string]): Promise<Set | undefined>
	/**
	 * Fetch every sets
	 * @param endpoint_0 'sets'
	 */
	public async fetch(endpoint: 'sets'): Promise<SetList | undefined>
	/**
	 * Fetch a serie
	 * @param endpoint_0 'series'
	 * @param endpoint_1 {string} the serie name or ID
	 */
	public async fetch(...endpoint: ['series', string]): Promise<Serie | undefined>
	/**
	 * Fetch every series
	 * @param endpoint_0 'series'
	 */
	public async fetch(endpoint: 'series'): Promise<SerieList | undefined>
	/**
	 * Fetch cards depending on a specific filter
	 * @param endpoint_0 {'categories' | 'hp' | 'illustrators' | 'rarities' | 'retreats' | 'types'}
	 * Possible value 'categories' | 'hp' | 'illustrators' | 'rarities' | 'retreats' | 'types'
	 * @param endpoint_1 {string} the value set while fetching the index
	 */
	public async fetch(...endpoint: ['categories' | 'hp' | 'illustrators' | 'rarities' | 'retreats' | 'types', string]): Promise<StringEndpoint | undefined>
	/**
	 * Fetch cards depending on a specific filter
	 * @param endpoint_0 {'hp' | 'retreats' | 'categories' | 'illustrators' | 'rarities' | 'types'}
	 * Possible value 'hp' | 'retreats' | 'categories' | 'illustrators' | 'rarities' | 'types'
	 * @param endpoint_1 {string} Fetch the possible values to use depending on the endpoint
	 */
	public async fetch(endpoint: 'hp' | 'retreats' | 'categories' | 'illustrators' | 'rarities' | 'types'): Promise<Array<string> | undefined>
	public async fetch(...endpoint: Array<Endpoint | string>): Promise<any | undefined> {
		if (endpoint.length === 0) {
			throw new Error(`endpoint to fetch is empty!`)
		}
		// @ts-expect-error with the precedent check, we KNOW that type is not empty
		const baseEndpoint = endpoint.shift().toLowerCase() as Endpoint
		if (!ENDPOINTS.includes(baseEndpoint)) {
			throw new Error(`unknown endpoint to fetch! (${baseEndpoint})`)
		}
		return this.makeRequest(baseEndpoint, ...endpoint)
	}

	/**
	 * Function to make the request and normalize the whole path
	 */
	private makeRequest<T = any>(...url: Array<string | number>) {
		// Normalize path
		const path = url.map((v) => encodeURI(
			v
				// Transform numbers to string
				.toString()
				// replace this special character with an escaped one
				.replace('?', '%3F')
				// normalize the string
				.normalize('NFC')
				// remove some special chars by nothing
				.replace(/["'\u0300-\u036f]/g, "")
		)).join('/')
		return RequestWrapper.getRequest<T>(`${BASE_URL}/${this.getLang()}/${path}`).get()
	}
}