from uuid import uuid4

from playwright.sync_api import Page, expect


def test_consumption_form_loads(page: Page):
    """Verify the consumption form page loads correctly."""
    page.goto("/ui/consumption")
    expect(page).to_have_title("CalMiner Consumption")
    expect(page.locator("h1")).to_have_text("Consumption")


def test_create_consumption_item(page: Page):
    """Test creating a new consumption item through the UI."""
    # First, create a scenario to associate the consumption with.
    page.goto("/ui/scenarios")
    scenario_name = f"Consumption Test Scenario {uuid4()}"
    page.fill("input[name='name']", scenario_name)
    page.click("button[type='submit']")
    with page.expect_response("**/api/scenarios/"):
        pass  # Wait for the scenario to be created

    # Now, navigate to the consumption page and add an item.
    page.goto("/ui/consumption")

    # Create a consumption item.
    consumption_desc = "Diesel for generators"
    page.select_option("select[name='scenario_id']", label=scenario_name)
    page.fill("input[name='description']", consumption_desc)
    page.fill("input[name='amount']", "5000")
    page.click("button[type='submit']")

    with page.expect_response("**/api/consumption/") as response_info:
        pass
    assert response_info.value.status == 201

    # Verify the new item appears in the table.
    expect(page.locator(f"tr:has-text('{consumption_desc}')")).to_be_visible()

    # Verify the feedback message.
    expect(page.locator("#consumption-feedback")
           ).to_have_text("Consumption record saved.")