import { describe, it, expect } from "vitest";
import { render, screen } from "@testing-library/react";
import { WorkflowResultsTab } from "./WorkflowResultsTab";
import type { WorkflowStepResult } from "@fusion/core";

describe("WorkflowResultsTab", () => {
  const mockResults: WorkflowStepResult[] = [
    {
      workflowStepId: "WS-001",
      workflowStepName: "QA Check",
      status: "passed",
      output: "All tests passed successfully.",
      startedAt: "2026-03-31T10:00:00Z",
      completedAt: "2026-03-31T10:02:30Z",
    },
    {
      workflowStepId: "WS-002",
      workflowStepName: "Security Audit",
      status: "failed",
      output: "Found 2 security issues in auth.ts",
      startedAt: "2026-03-31T10:02:35Z",
      completedAt: "2026-03-31T10:03:15Z",
    },
    {
      workflowStepId: "WS-003",
      workflowStepName: "Documentation Review",
      status: "skipped",
      output: undefined,
      startedAt: undefined,
      completedAt: undefined,
    },
    {
      workflowStepId: "WS-004",
      workflowStepName: "Performance Check",
      status: "pending",
      output: undefined,
      startedAt: "2026-03-31T10:03:20Z",
      completedAt: undefined,
    },
  ];

  it("renders list of workflow step results", () => {
    render(<WorkflowResultsTab taskId="FN-001" results={mockResults} />);

    expect(screen.getByTestId("workflow-results-list")).toBeInTheDocument();
    expect(screen.getByText("QA Check")).toBeInTheDocument();
    expect(screen.getByText("Security Audit")).toBeInTheDocument();
    expect(screen.getByText("Documentation Review")).toBeInTheDocument();
    expect(screen.getByText("Performance Check")).toBeInTheDocument();
  });

  it("renders correct status badges for each result", () => {
    render(<WorkflowResultsTab taskId="FN-001" results={mockResults} />);

    // Passed badge
    const passedBadge = screen.getByTestId("workflow-result-badge-WS-001");
    expect(passedBadge).toHaveTextContent("Passed");
    expect(passedBadge).toHaveStyle({ backgroundColor: "var(--color-success, #3fb950)" });

    // Failed badge
    const failedBadge = screen.getByTestId("workflow-result-badge-WS-002");
    expect(failedBadge).toHaveTextContent("Failed");
    expect(failedBadge).toHaveStyle({ backgroundColor: "var(--color-error, #f85149)" });

    // Skipped badge
    const skippedBadge = screen.getByTestId("workflow-result-badge-WS-003");
    expect(skippedBadge).toHaveTextContent("Skipped");

    // Pending badge
    const pendingBadge = screen.getByTestId("workflow-result-badge-WS-004");
    expect(pendingBadge).toHaveTextContent("Running…");
    expect(pendingBadge).toHaveStyle({ backgroundColor: "var(--todo, #58a6ff)" });
  });

  it("shows output content for each result", () => {
    render(<WorkflowResultsTab taskId="FN-001" results={mockResults} />);

    expect(screen.getByTestId("workflow-result-output-WS-001")).toHaveTextContent(
      "All tests passed successfully."
    );
    expect(screen.getByTestId("workflow-result-output-WS-002")).toHaveTextContent(
      "Found 2 security issues in auth.ts"
    );
  });

  it("handles results without output gracefully", () => {
    render(<WorkflowResultsTab taskId="FN-001" results={mockResults} />);

    // WS-003 and WS-004 have no output, so output elements should not be rendered
    expect(screen.queryByTestId("workflow-result-output-WS-003")).not.toBeInTheDocument();
    expect(screen.queryByTestId("workflow-result-output-WS-004")).not.toBeInTheDocument();
  });

  it("shows empty state when no results", () => {
    render(<WorkflowResultsTab taskId="FN-001" results={[]} />);

    expect(screen.getByTestId("workflow-results-empty")).toBeInTheDocument();
    expect(screen.getByText("No workflow steps have run yet.")).toBeInTheDocument();
  });

  it("shows loading state when loading prop is true", () => {
    render(<WorkflowResultsTab taskId="FN-001" results={[]} loading={true} />);

    expect(screen.getByTestId("workflow-results-loading")).toBeInTheDocument();
    expect(screen.getByText("Loading workflow results…")).toBeInTheDocument();
  });

  it("displays execution timestamps when available", () => {
    render(<WorkflowResultsTab taskId="FN-001" results={mockResults} />);

    // Check that timestamps are displayed for results that have them
    const timestamps = screen.getAllByText(/Started:/);
    expect(timestamps.length).toBeGreaterThanOrEqual(3); // 3 results have startedAt
  });

  it("displays duration when start and end times are available", () => {
    render(<WorkflowResultsTab taskId="FN-001" results={mockResults} />);

    // The first result has a 2m 30s duration
    expect(screen.getByText("2m 30s")).toBeInTheDocument();
  });

  it("handles results with missing timestamps gracefully", () => {
    const resultsWithoutTimestamps: WorkflowStepResult[] = [
      {
        workflowStepId: "WS-005",
        workflowStepName: "Simple Check",
        status: "passed",
        output: "Done",
      },
    ];

    render(<WorkflowResultsTab taskId="FN-001" results={resultsWithoutTimestamps} />);

    expect(screen.getByText("Simple Check")).toBeInTheDocument();
    // Should not crash without timestamps
  });
});