import sqlite3
import importlib

import pytest

server_app_module = importlib.import_module("server.app")

# Expose app and init_db from the imported module
app = server_app_module.app
init_db = server_app_module.init_db


@pytest.fixture
def client():
    with app.test_client() as client:
        yield client


def test_is_postgres_enabled():
    """Test postgres detection logic."""
    from server.database import is_postgres_enabled, set_postgres_override

    # Test override functionality
    set_postgres_override(True)
    assert is_postgres_enabled()

    set_postgres_override(False)
    assert not is_postgres_enabled()

    set_postgres_override(None)  # Reset to default


def test_db_cursor_context_manager():
    """Test database cursor context manager."""
    from server.database import db_cursor

    with db_cursor() as (conn, cur):
        assert conn is not None
        assert cur is not None
        # Test that we can execute a query
        cur.execute("SELECT 1")
        result = cur.fetchone()
        assert result[0] == 1


def test_get_app_settings_empty():
    """Test getting app settings when none exist."""
    from server.database import get_app_settings

    settings = get_app_settings()
    assert isinstance(settings, dict)
    assert len(settings) == 0


def test_update_app_setting():
    """Test updating app settings."""
    from server.database import update_app_setting, get_app_settings

    # Update a setting
    update_app_setting("test_key", "test_value")

    # Verify it was saved
    settings = get_app_settings()
    assert settings["test_key"] == "test_value"


def test_delete_app_setting():
    """Test deleting app settings."""
    from server.database import update_app_setting, delete_app_setting, get_app_settings

    # Add a setting
    update_app_setting("delete_test", "to_delete")

    # Delete it
    delete_app_setting("delete_test")

    # Verify it's gone
    settings = get_app_settings()
    assert "delete_test" not in settings


def test_get_contacts_pagination():
    """Test contact pagination."""
    from server.database import get_contacts

    # Get first page
    submissions, total = get_contacts(page=1, per_page=10)
    assert isinstance(submissions, list)
    assert isinstance(total, int)
    assert total >= 0