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import { describe, expect, it } from "vitest";
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import { parseICalendarBytes } from "@/worker/caldav/ical/parse";
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import { parseVCardBytes } from "@/worker/carddav/vcard";
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import { utf8ArrayBuffer } from "@tests/worker/helpers/bytes";
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import { extractDeadPropertyFragment } from "@/worker/xml/dead-props";
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import { parseSafeXml } from "@/worker/xml/parser";
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describe("parser compatibility checks", () => {
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  it("preserves namespace URI and local name for dead property fragments", () => {
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    const fragment = extractDeadPropertyFragment('<x:favorite xmlns:x="urn:example:test">blue</x:favorite>');
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    expect(fragment).toEqual({
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      nsUri: "urn:example:test",
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      localName: "favorite",
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      xmlValue: '<x:favorite xmlns:x="urn:example:test">blue</x:favorite>',
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    });
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  });
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  it("rejects unsafe entity declarations", () => {
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    expect(() => parseSafeXml("<!DOCTYPE x [<!ENTITY y 'z'>]><x>&y;</x>")).toThrow(
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      "Unsafe XML entity declarations are not accepted",
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    );
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  });
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  it("rejects structurally hostile XML below the byte limit", () => {
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    const deep = `${"<x>".repeat(129)}${"</x>".repeat(129)}`;
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    expect(() => parseSafeXml(deep)).toThrow();
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    const many = `<root>${"<x/>".repeat(50_001)}</root>`;
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    expect(() => parseSafeXml(many, 1_000_000)).toThrow("element count limit");
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  });
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  it("imports bounded calendar and contact parsers in the Worker runtime", () => {
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    const calendar = [
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      "BEGIN:VCALENDAR",
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      "VERSION:2.0",
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      "PRODID:-//dab//parser-check//EN",
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      "BEGIN:VEVENT",
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      "UID:calendar-parser-check",
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      "DTSTAMP:20260521T000000Z",
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      "DTSTART:20260521T000000Z",
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      "END:VEVENT",
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      "END:VCALENDAR",
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    ].join("\r\n");
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    const contact = ["BEGIN:VCARD", "VERSION:4.0", "UID:contact-parser-check", "FN:Parser Check", "END:VCARD"].join(
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      "\r\n",
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    );
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    expect(parseICalendarBytes(utf8ArrayBuffer(calendar), 4096, { maxYears: 1, maxInstances: 10 }).uid).toBe(
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      "calendar-parser-check",
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    );
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    expect(parseVCardBytes(utf8ArrayBuffer(contact), 4096).uid).toBe("contact-parser-check");
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  });
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});