import { NATIVE_FETCH } from "./bx-flags";
import { STATES } from "./global";

export class XcloudApi {
    private static instance: XcloudApi;

    public static getInstance(): XcloudApi {
        if (!XcloudApi.instance) {
            XcloudApi.instance = new XcloudApi();
        }

        return XcloudApi.instance;
    }

    #CACHE_TITLES: {[key: string]: XcloudTitleInfo} = {};
    #CACHE_WAIT_TIME: {[key: string]: XcloudWaitTimeInfo} = {};

    async getTitleInfo(id: string): Promise<XcloudTitleInfo | null> {
        if (id in this.#CACHE_TITLES) {
            return this.#CACHE_TITLES[id];
        }

        const baseUri = STATES.selectedRegion.baseUri;
        if (!baseUri || !STATES.gsToken) {
            return null;
        }

        let json;
        try {
            const response = await NATIVE_FETCH(`${baseUri}/v2/titles`, {
                method: 'POST',
                headers: {
                    'Authorization': `Bearer ${STATES.gsToken}`,
                    'Content-Type': 'application/json',
                },

                // format the data
                body: JSON.stringify({
                    alternateIds: [id],
                    alternateIdType: 'productId',
                }),
            });

            json = (await response.json()).results[0];
        } catch (e) {
            json = {}
        }
        this.#CACHE_TITLES[id] = json;
        return json;
    }

    async getWaitTime(id: string): Promise<XcloudWaitTimeInfo | null> {
        if (id in this.#CACHE_WAIT_TIME) {
            return this.#CACHE_WAIT_TIME[id];
        }

        const baseUri = STATES.selectedRegion.baseUri;
        if (!baseUri || !STATES.gsToken) {
            return null;
        }

        let json;
        try {
            const response = await NATIVE_FETCH(`${baseUri}/v1/waittime/${id}`, {
                method: 'GET',
                headers: {
                    'Authorization': `Bearer ${STATES.gsToken}`,
                },
            });

            json = await response.json();
        } catch (e) {
            json = {};
        }

        this.#CACHE_WAIT_TIME[id] = json;
        return json;
    }
}