import { describe, expect, it } from "vitest";
import { getInitialMarriageProfile } from "@/hooks/marriage/use-profile-main";
import type { MarriageProfileResponse } from "@/hooks/marriage/types";

/**
 * Robust parser replicating the layout.tsx and auth-bridge.ts cookie resolution strategy.
 */
export function parseMarriageCookie(
  rawCookie: string | null | undefined,
): { parsedJson: any; profile?: MarriageProfileResponse } | null {
  if (!rawCookie || !rawCookie.trim()) return null;

  const trimmed = rawCookie.trim();

  // Strategy 1: Try decoding URI component first (Standard RFC-6265 percent-encoded cookie from Flutter)
  try {
    const decoded = decodeURIComponent(trimmed);
    const parsed = JSON.parse(decoded);
    return {
      parsedJson: parsed,
      profile: getInitialMarriageProfile(parsed),
    };
  } catch {
    // Strategy 2: Fallback for legacy raw unencoded JSON cookies
    try {
      const parsed = JSON.parse(trimmed);
      return {
        parsedJson: parsed,
        profile: getInitialMarriageProfile(parsed),
      };
    } catch {
      return null;
    }
  }
}

describe("HABIB_MARRIAGE_DATA Cookie Encoding & Decoding Suite", () => {
  it("successfully parses standard URL-encoded JSON with Persian characters (Uri.encodeComponent)", () => {
    const originalData = {
      id: 101,
      status: "match_found",
      gender: "male",
      city: "تهران",
      bio: "مهندس کامپیوتر، علاقه‌مند به کتاب‌خوانی و طبیعت‌گردی",
      match_summary: {
        id: 202,
        gender: "female",
        public_info: [
          { label: "شهر", value: "اصفهان" },
          { label: "تحصیلات", value: "کارشناسی ارشد" },
        ],
      },
    };

    // Simulate Flutter: Uri.encodeComponent(json.encode(marriageData))
    const encodedCookie = encodeURIComponent(JSON.stringify(originalData));

    // Verify it's purely US-ASCII
    expect(/^[\x00-\x7F]*$/.test(encodedCookie)).toBe(true);

    const result = parseMarriageCookie(encodedCookie);
    expect(result).not.toBeNull();
    expect(result?.parsedJson.city).toBe("تهران");
    expect(result?.parsedJson.bio).toBe("مهندس کامپیوتر، علاقه‌مند به کتاب‌خوانی و طبیعت‌گردی");
    expect(result?.parsedJson.match_summary.public_info[0].value).toBe("اصفهان");
    expect(result?.profile?.status).toBe("match_found");
  });

  it("successfully parses legacy raw unencoded JSON with Persian characters", () => {
    const legacyRawCookie = JSON.stringify({
      id: 102,
      status: "active",
      gender: "female",
      city: "مشهد",
      interests: ["زیارت", "خانواده"],
    });

    const result = parseMarriageCookie(legacyRawCookie);
    expect(result).not.toBeNull();
    expect(result?.parsedJson.city).toBe("مشهد");
    expect(result?.parsedJson.interests).toEqual(["زیارت", "خانواده"]);
  });

  it("handles complex strings with percentage signs, quotes, and emojis without crashing", () => {
    const complexData = {
      id: 103,
      status: "match_found",
      note: "تطابق با دقت ۱۰۰% و رضایت ۹۵% 💍❤️",
      query: "param1=val&param2=50%off",
    };

    const encodedCookie = encodeURIComponent(JSON.stringify(complexData));
    const result = parseMarriageCookie(encodedCookie);

    expect(result).not.toBeNull();
    expect(result?.parsedJson.note).toBe("تطابق با دقت ۱۰۰% و رضایت ۹۵% 💍❤️");
    expect(result?.parsedJson.query).toBe("param1=val&param2=50%off");
  });

  it("handles unencoded JSON containing raw percent sign gracefully via fallback", () => {
    // If an unencoded cookie contains raw %, decodeURIComponent will throw URIError.
    // The parser MUST catch it and fallback to JSON.parse directly.
    const rawWithPercent = '{"status":"active","progress":"100% completed","city":"شیراز"}';

    const result = parseMarriageCookie(rawWithPercent);
    expect(result).not.toBeNull();
    expect(result?.parsedJson.progress).toBe("100% completed");
    expect(result?.parsedJson.city).toBe("شیراز");
  });

  it("returns null safely for corrupted, empty, or invalid cookies", () => {
    expect(parseMarriageCookie(null)).toBeNull();
    expect(parseMarriageCookie("")).toBeNull();
    expect(parseMarriageCookie("   ")).toBeNull();
    expect(parseMarriageCookie("undefined")).toBeNull();
    expect(parseMarriageCookie("invalid-not-json")).toBeNull();
    expect(parseMarriageCookie("%E0%A4%A")).toBeNull(); // Malformed URI sequence
  });
});