// @ts-ignore
import $ from "jquery"
import {LicenseInfo} from "./Wikimedia";
import ImageAttributionSource from "./ImageAttributionSource";
import {UIEventSource} from "../UIEventSource";
import BaseUIElement from "../../UI/BaseUIElement";

export class Imgur extends ImageAttributionSource {

    public static readonly singleton = new Imgur();

    private constructor() {
        super();
    }

    static uploadMultiple(
        title: string, description: string, blobs: FileList,
        handleSuccessfullUpload: ((imageURL: string) => void),
        allDone: (() => void),
        onFail: ((reason: string) => void),
        offset: number = 0) {

        if (blobs.length == offset) {
            allDone();
            return;
        }
        const blob = blobs.item(offset);
        const self = this;
        this.uploadImage(title, description, blob,
            (imageUrl) => {
                handleSuccessfullUpload(imageUrl);
                self.uploadMultiple(
                    title, description, blobs,
                    handleSuccessfullUpload,
                    allDone,
                    onFail,
                    offset + 1);
            },
            onFail
        );


    }

    static uploadImage(title: string, description: string, blob,
                       handleSuccessfullUpload: ((imageURL: string) => void),
                       onFail: (reason: string) => void) {

        const apiUrl = 'https://api.imgur.com/3/image';
        const apiKey = '7070e7167f0a25a';

        const settings = {
            async: true,
            crossDomain: true,
            processData: false,
            contentType: false,
            type: 'POST',
            url: apiUrl,
            headers: {
                Authorization: 'Client-ID ' + apiKey,
                Accept: 'application/json',
            },
            mimeType: 'multipart/form-data',
        };
        const formData = new FormData();
        formData.append('image', blob);
        formData.append("title", title);
        formData.append("description", description)
        // @ts-ignore
        settings.data = formData;

        // Response contains stringified JSON
        // Image URL available at response.data.link
        // @ts-ignore
        $.ajax(settings).done(function (response) {
            response = JSON.parse(response);
            handleSuccessfullUpload(response.data.link);
        }).fail((reason) => {
            console.log("Uploading to IMGUR failed", reason);
            // @ts-ignore
            onFail(reason);
        });
    }

    SourceIcon(): BaseUIElement {
        return undefined;
    }

    protected DownloadAttribution(url: string): UIEventSource<LicenseInfo> {
        const src = new UIEventSource<LicenseInfo>(undefined)


        const hash = url.substr("https://i.imgur.com/".length).split(".jpg")[0];

        const apiUrl = 'https://api.imgur.com/3/image/' + hash;
        const apiKey = '7070e7167f0a25a';

        const settings = {
            async: true,
            crossDomain: true,
            processData: false,
            contentType: false,
            type: 'GET',
            url: apiUrl,
            headers: {
                Authorization: 'Client-ID ' + apiKey,
                Accept: 'application/json',
            },
        };
        // @ts-ignore
        $.ajax(settings).done(function (response) {
            const descr: string = response.data.description ?? "";
            const data: any = {};
            for (const tag of descr.split("\n")) {
                const kv = tag.split(":");
                const k = kv[0];
                data[k] = kv[1].replace("\r", "");
            }


            const licenseInfo = new LicenseInfo();

            licenseInfo.licenseShortName = data.license;
            licenseInfo.artist = data.author;

            src.setData(licenseInfo)

        }).fail((reason) => {
            console.log("Getting metadata from to IMGUR failed", reason)
        });

        return src;
    }


}