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

import { EMPLOYEE, MANAGER, apiPostData, createAuthenticatedApiClient, login, logout } from "./helpers/auth";
import { openNavLink } from "./helpers/navigation";
import { TEST_IDS } from "./helpers/testIds";

function formatDate(offsetDays: number) {
  const value = new Date();
  value.setUTCDate(value.getUTCDate() + offsetDays);
  return value.toISOString().slice(0, 10);
}


async function selectFirstEnabledOption(locator: Locator) {
  await expect
    .poll(async () => {
      const optionValues = await locator.locator("option").evaluateAll((options) =>
        options
          .map((option) => ({
            value: (option as HTMLOptionElement).value,
            disabled: (option as HTMLOptionElement).disabled,
          }))
          .filter((option) => option.value && !option.disabled)
          .map((option) => option.value),
      );
      return optionValues[0] ?? "";
    })
    .not.toBe("");

  const [firstValue] = await locator.locator("option").evaluateAll((options) =>
    options
      .map((option) => ({
        value: (option as HTMLOptionElement).value,
        disabled: (option as HTMLOptionElement).disabled,
      }))
      .filter((option) => option.value && !option.disabled)
      .map((option) => option.value),
  );

  await locator.selectOption(firstValue);
}

async function createLeaveDraft(page: Page, startDate: string, endDate: string, reason: string) {
  const createResponsePromise = page.waitForResponse(
    (response) => response.request().method() === "POST" && new URL(response.url()).pathname === "/api/leave-requests" && response.ok(),
  );

  await selectFirstEnabledOption(page.locator("#leave-type"));
  await page.locator("#leave-start-date").fill(startDate);
  await page.locator("#leave-end-date").fill(endDate);
  await page.locator("#leave-start-session").selectOption("am");
  await page.locator("#leave-end-session").selectOption("pm");
  await page.locator("#leave-reason").fill(reason);
  await page.getByRole("button", { name: "创建草稿" }).click();

  const createPayload = (await (await createResponsePromise).json()) as { data?: { id?: string } };
  const leaveRequestId = createPayload.data?.id;
  if (!leaveRequestId) {
    throw new Error(`创建请假草稿后未返回 id: ${JSON.stringify(createPayload)}`);
  }
  return leaveRequestId;
}

async function submitLeave(api: Awaited<ReturnType<typeof createAuthenticatedApiClient>>["api"], leaveRequestId: string) {
  return apiPostData<{ leaveRequestId: string; currentTaskId: string }>(api, `/api/leave-requests/${leaveRequestId}/submit`, {});
}

async function withdrawLeave(api: Awaited<ReturnType<typeof createAuthenticatedApiClient>>["api"], leaveRequestId: string) {
  return apiPostData<{ leaveRequestId: string; leaveStatus: string }>(api, `/api/leave-requests/${leaveRequestId}/withdraw`, {});
}

test("E2E 请假主链路：草稿 → 提交 → 撤回 + 提交 → 审批", async ({ page }) => {
  const employeeClient = await createAuthenticatedApiClient(EMPLOYEE);
  const baseOffset = 30 + Number(String(Date.now()).slice(-2));
  const firstDate = formatDate(baseOffset);
  const secondDate = formatDate(baseOffset + 7);

  try {
    await login(page, EMPLOYEE);
  await (await openNavLink(page, "请假")).click();
  await expect(page.getByRole("heading", { name: "请假申请" })).toBeVisible();

  const firstLeaveId = await createLeaveDraft(page, firstDate, firstDate, `Playwright 撤回请假 ${Date.now()}`);
  await submitLeave(employeeClient.api, firstLeaveId);
  await page.goto("/leave-requests");
  const firstRow = page.getByRole("row").filter({ hasText: firstDate }).first();
  await expect(firstRow).toContainText("审批中", { timeout: 30_000 });

  await withdrawLeave(employeeClient.api, firstLeaveId);
  await page.goto("/leave-requests");
  await expect(firstRow).toContainText("草稿", { timeout: 30_000 });

  const secondLeaveId = await createLeaveDraft(page, secondDate, secondDate, `Playwright 审批请假 ${Date.now()}`);
  const secondSubmit = await submitLeave(employeeClient.api, secondLeaveId);
  await page.goto("/leave-requests");
  const secondRow = page.getByRole("row").filter({ hasText: secondDate }).first();
  await expect(secondRow).toContainText("审批中", { timeout: 30_000 });

  await logout(page, EMPLOYEE.name);

  await login(page, MANAGER);
  await (await openNavLink(page, "待我处理")).click();
  await expect(page.getByTestId(TEST_IDS.workflow.tasksTable)).toBeVisible();
  const taskRow = page.getByTestId(TEST_IDS.workflow.taskRow).filter({ hasText: secondSubmit.currentTaskId }).first();
  await expect(taskRow).toBeVisible({ timeout: 30_000 });
  await taskRow.getByTestId(TEST_IDS.workflow.detailLink).click();
  await page.getByTestId(TEST_IDS.workflow.approve).click();
  await expect(page.getByTestId(TEST_IDS.workflow.summary)).toContainText(/状态：(completed|已完成)/);

  await logout(page, MANAGER.name);

  await login(page, EMPLOYEE);
  await page.goto("/leave-requests");
  await expect(page.getByRole("row").filter({ hasText: secondDate }).first()).toContainText("已通过", { timeout: 30_000 });
  await expect(page.getByRole("row").filter({ hasText: firstDate }).first()).toContainText("草稿", { timeout: 30_000 });
  } finally {
    await employeeClient.dispose();
  }
});