import { render, screen } from "@testing-library/react";
import { describe, expect, it } from "vitest";
import { DashboardAnalyticsSection } from "@/components/dashboard/analytics-section";
import type { DashboardAnalytics } from "@/lib/types";

const EMPTY_ANALYTICS: DashboardAnalytics = {
  changes_by_type: {
    new_document: 0,
    removed_document: 0,
    content_modified: 0,
    price_change: 0,
    leadership_change: 0,
    filing_new: 0,
  },
  alerts_by_severity: { critical: 0, high: 0, medium: 0, low: 0 },
  sources_by_status: {
    active: 0,
    disabled: 0,
    rate_limited: 0,
    auth_required: 0,
    blocked_by_policy: 0,
    failed: 0,
  },
  runs_by_day: [],
  recent_signals: [],
};

describe("DashboardAnalyticsSection", () => {
  it("shows empty states when there is no activity yet", () => {
    render(<DashboardAnalyticsSection analytics={EMPTY_ANALYTICS} />);

    expect(screen.getByText(/no changes detected in the last 30 days/i)).toBeInTheDocument();
    expect(screen.getByText(/no alerts in the last 30 days/i)).toBeInTheDocument();
    expect(screen.getByText(/no monitoring runs in the last 30 days/i)).toBeInTheDocument();
    expect(screen.getByText(/no signals detected yet/i)).toBeInTheDocument();
  });

  it("renders a recent signal with company link and severity", () => {
    const analytics: DashboardAnalytics = {
      ...EMPTY_ANALYTICS,
      recent_signals: [
        {
          id: "change-1",
          company_id: "company-1",
          company_name: "Acme Mobility",
          change_type: "leadership_change",
          severity: "high",
          confidence_score: 0.8,
          summary: "New CEO announced",
          created_at: new Date().toISOString(),
        },
      ],
    };

    render(<DashboardAnalyticsSection analytics={analytics} />);

    expect(screen.getByText("New CEO announced")).toBeInTheDocument();
    expect(screen.getByRole("link", { name: "Acme Mobility" })).toHaveAttribute(
      "href",
      "/companies/company-1",
    );
    expect(screen.getByText("high")).toBeInTheDocument();
  });
});