/* =====================================================================
   uc-session-continuity-guard.spec.ts — 같은 내담자 활성 회기 보호

   목적: 종료된 회기가 아닌 같은 내담자의 진행 중 회기가 있을 때 새 회기를
   중복 생성하지 않고, 서버가 돌려준 기존 회기로 학습자를 이동시킨다.
   모든 응답은 route fixture이며 실제 AI 엔진/DB를 쓰지 않는다.
   ===================================================================== */

import { expect, test, type Page } from "@playwright/test";

const ACTIVE_SESSION_ID = "77777777-7777-4777-8777-777777777777";

function jsonRoute(body: unknown, status = 200) {
  return {
    status,
    contentType: "application/json",
    body: JSON.stringify(body),
  };
}

async function installFixture(page: Page) {
  let startAttempts = 0;

  await page.route("**/api/**", (route) =>
    route.fulfill(jsonRoute({ detail: "not part of this focused fixture" }, 404)),
  );
  await page.route("**/api/auth/me", (route) =>
    route.fulfill(
      jsonRoute({
        user_id: "00000000-0000-0000-0000-00000uccg301",
        email: "continuity.guard@hs.ac.kr",
        display_name: "연속성 검증 학습자",
        role: "learner",
        admin_access: false,
        super_admin: false,
        account_status: "approved",
        approval_required: false,
        cohort_ids: [],
        consent_at: Math.floor(Date.now() / 1000),
        onboarding_completed_at: Math.floor(Date.now() / 1000),
        nickname: "연속성 검증 학습자",
        self_introduction: "",
        avatar_url: "",
      }),
    ),
  );
  await page.route("**/api/personas", (route) =>
    route.fulfill(
      jsonRoute([
        {
          code: "P1",
          display_name: "민서(청소년 우울)",
          difficulty: "hard",
          theory_target: ["humanistic"],
          demographics: { age_band: "10대" },
          presenting_summary: "자퇴와 무기력감을 둘러싼 상담 연습",
          voice_preset: "soft-young-fem",
          source: "database",
          degraded: false,
        },
      ]),
    ),
  );
  await page.route("**/api/users/me/prepost-measures**", (route) =>
    route.fulfill(
      jsonRoute({
        pilot_id: "phase3-pilot-draft",
        instrument_version: "test",
        measures: [],
        complete_pre_count: 0,
        complete_post_count: 0,
        updated_at: null,
      }),
    ),
  );
  await page.route("**/api/sessions", async (route) => {
    if (route.request().method() !== "POST") {
      await route.fallback();
      return;
    }
    startAttempts += 1;
    await route.fulfill(
      jsonRoute(
        {
          detail: {
            code: "active_session_exists",
            session_id: ACTIVE_SESSION_ID,
          },
        },
        409,
      ),
    );
  });
  await page.route(`**/api/sessions/${ACTIVE_SESSION_ID}`, (route) =>
    route.fulfill(
      jsonRoute({
        session_id: ACTIVE_SESSION_ID,
        case_id: "uc-continuity-case-001",
        persona_code: "P1",
        persona_name: "민서",
        session_no: 1,
        status: "active",
        stage: "라포",
        theory_mode: "humanistic",
        effective_openness: 0.21,
        started_at: new Date().toISOString(),
        ended_at: null,
        review_ready: false,
        turns: [],
        goal_stages: ["라포"],
        progress: null,
        duration_limit_seconds: 3600,
        warning_before_end_seconds: 600,
      }),
    ),
  );

  return { startAttempts: () => startAttempts };
}

test.describe("uc session continuity guard", () => {
  test("같은 내담자의 활성 회기 충돌은 기존 회기로 이어간다", async ({ page }) => {
    const fixture = await installFixture(page);
    await page.goto("/learn/session/P1");
    await expect(page.locator(".sx-page--prestart")).toBeVisible();

    await page.getByRole("button", { name: "회기 시작" }).click();

    await expect(page).toHaveURL(
      new RegExp(`/learn/session/${ACTIVE_SESSION_ID}$`),
    );
    await expect(page.getByText("민서").first()).toBeVisible();
    expect(fixture.startAttempts()).toBe(1);
  });
});