Upload-Box/help.js at main · vision39/Upload-Box · GitHub

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window.addEventListener("DOMContentLoaded",() => {
	const upload = new UploadModal("#upload");
});

class UploadModal {
    filename = "";
    isCopying = false;
    isUploading = false;
    progress = 0;
    progressTimeout = null;
    state = 0;

    constructor(el) {
        this.el = document.querySelector(el);
        this.el?.addEventListener("click",this.action.bind(this));
        this.el?.querySelector("#file")?.addEventListener("change",this.fileHandle.bind(this));
    }
    action(e) {
        this[e.target?.getAttribute("data-action")]?.();
        this.stateDisplay();
    }
    cancel() {
        this.isUploading = false;
        this.progress = 0;
        this.progressTimeout = null;
        this.state = 0;
        this.stateDisplay();
        this.progressDisplay();
        this.fileReset();
    }
    async copy() {
        const copyButton = this.el?.querySelector("[data-action='copy']");

        if (!this.isCopying && copyButton) {
            // disable
            this.isCopying = true;
            copyButton.style.width = `${copyButton.offsetWidth}px`;
            copyButton.disabled = true;
            copyButton.textContent = "Copied!";
            navigator.clipboard.writeText(this.filename);
            await new Promise(res => setTimeout(res, 1000));
            // reenable
            this.isCopying = false;
            copyButton.removeAttribute("style");
            copyButton.disabled = false;
            copyButton.textContent = "Copy Link";
        }
    }
    fail() {
        this.isUploading = false;
        this.progress = 0;
        this.progressTimeout = null;
        this.state = 2;
        this.stateDisplay();
    }
    file() {
        this.el?.querySelector("#file").click();
    }
    fileDisplay(name = "") {
        // update the name
        this.filename = name;

        const fileValue = this.el?.querySelector("[data-file]");
        if (fileValue) fileValue.textContent = this.filename;

        // show the file
        this.el?.setAttribute("data-ready", this.filename ? "true" : "false");
    }
    fileHandle(e) {
        return new Promise(() => {
            const { target } = e;
            if (target?.files.length) {
                let reader = new FileReader();
                reader.onload = e2 => {
                    this.fileDisplay(target.files[0].name);
                };
                reader.readAsDataURL(target.files[0]);
            }
        });
    }
    fileReset() {
        const fileField = this.el?.querySelector("#file");
        if (fileField) fileField.value = null;

        this.fileDisplay();
    }
    progressDisplay() {
        const progressValue = this.el?.querySelector("[data-progress-value]");
        const progressFill = this.el?.querySelector("[data-progress-fill]");
        const progressTimes100 = Math.floor(this.progress * 100);

        if (progressValue) progressValue.textContent = `${progressTimes100}%`;
        if (progressFill) progressFill.style.transform = `translateX(${progressTimes100}%)`;
    }
    async progressLoop() {
        this.progressDisplay();

        if (this.isUploading) {
            if (this.progress === 0) {
                await new Promise(res => setTimeout(res, 1000));
                // fail randomly
                if (!this.isUploading) {
                    return;
                } else if (Utils.randomInt(0,2) === 0) {
                    this.fail();
                    return;
                }
            }
            // …or continue with progress
            if (this.progress < 1) {
                this.progress += 0.01;
                this.progressTimeout = setTimeout(this.progressLoop.bind(this), 50);
            } else if (this.progress >= 1) {
                this.progressTimeout = setTimeout(() => {
                    if (this.isUploading) {
                        this.success();
                        this.stateDisplay();
                        this.progressTimeout = null;
                    }
                }, 250);
            }
        }
    }
    stateDisplay() {
        this.el?.setAttribute("data-state", `${this.state}`);
    }
    success() {
        this.isUploading = false;
        this.state = 3;
        this.stateDisplay();
    }
    upload() {
        if (!this.isUploading) {
            this.isUploading = true;
            this.progress = 0;
            this.state = 1;
            this.progressLoop();
        }
    }
}

class Utils {
    static randomInt(min = 0,max = 2**32) {
        const percent = crypto.getRandomValues(new Uint32Array(1))[0] / 2**32;
        const relativeValue = (max - min) * percent;

// end

        return Math.round(min + relativeValue);
    }

}