import { ApplicationPlatform, BooleanFlag, type Envelope, type Token, Upload } from "@clarity-types/data";
import * as scrub from "@src/core/scrub";
import { time } from "@src/core/time";
import version from "@src/core/version";
import * as metadata from "@src/data/metadata";

export let data: Envelope = null;

export function start(): void {
    const m = metadata.data;
    data = {
        version,
        sequence: 0,
        start: 0,
        duration: 0,
        projectId: m.projectId,
        userId: m.userId,
        sessionId: m.sessionId,
        pageNum: m.pageNum,
        upload: Upload.Async,
        end: BooleanFlag.False,
        applicationPlatform: ApplicationPlatform.WebApp,
        url: "",
    };
}

export function stop(): void {
    data = null;
}

export function envelope(last: boolean): Token[] {
    data.start = data.start + data.duration;
    data.duration = time() - data.start;
    data.sequence++;
    data.upload = last && "sendBeacon" in navigator ? Upload.Beacon : Upload.Async;
    data.end = last ? BooleanFlag.True : BooleanFlag.False;
    data.applicationPlatform = ApplicationPlatform.WebApp;
    data.url = scrub.url(location.href, false, true);
    return [
        data.version,
        data.sequence,
        data.start,
        data.duration,
        data.projectId,
        data.userId,
        data.sessionId,
        data.pageNum,
        data.upload,
        data.end,
        data.applicationPlatform,
        data.url,
    ];
}