import React, {useState, useCallback} from 'react';
import PropTypes from 'prop-types';
import {Plus, Loader, Play} from 'lucide-react';
import FormatUnitTest from './FormatUnitTest';
import AddFormatTestModal from './AddFormatTestModal';
import DeleteConfirmationModal from '@ui/DeleteConfirmationModal';

const FormatTestingTab = ({
    conditions,
    tests,
    onTestsChange,
    isRunningTests,
    onRunTests
}) => {
    const [isModalOpen, setIsModalOpen] = useState(false);
    const [editingTest, setEditingTest] = useState(null);
    const [deleteTestId, setDeleteTestId] = useState(null);

    const handleAddOrUpdateTest = useCallback(
        testData => {
            let updatedTests;
            if (editingTest) {
                // Update existing test
                updatedTests = tests.map(test =>
                    test.id === testData.id ? testData : test
                );
            } else {
                // Add new test
                updatedTests = [...tests, testData];
            }
            onTestsChange(updatedTests);
            onRunTests(conditions, updatedTests);
            setEditingTest(null);
        },
        [tests, onTestsChange, onRunTests, conditions, editingTest]
    );

    const handleEditTest = useCallback(test => {
        setEditingTest(test);
        setIsModalOpen(true);
    }, []);

    const handleDeleteTest = useCallback(() => {
        const updatedTests = tests.filter(test => test.id !== deleteTestId);
        onTestsChange(updatedTests);
        setDeleteTestId(null);
    }, [tests, deleteTestId, onTestsChange]);

    const handleCloseModal = useCallback(() => {
        setIsModalOpen(false);
        setEditingTest(null);
    }, []);

    // Calculate test statistics
    const totalTests = tests?.length || 0;
    const passedTests = tests?.filter(test => test.passes)?.length || 0;

    return (
        <div className='flex flex-col h-full'>
            {/* Header Section with Progress Bar */}
            <div className='flex items-center justify-between pb-4 pr-2'>
                <div>
                    <h2 className='text-xl font-semibold text-gray-900 dark:text-white mb-3'>
                        Unit Tests
                    </h2>
                    <div className='flex items-center gap-3'>
                        <div className='h-1.5 w-32 bg-gray-200 dark:bg-gray-700 rounded-full overflow-hidden'>
                            <div
                                className='h-full bg-emerald-500 rounded-full transition-all duration-300'
                                style={{
                                    width: `${
                                        totalTests
                                            ? (passedTests / totalTests) * 100
                                            : 0
                                    }%`
                                }}
                            />
                        </div>
                        <span className='text-sm text-gray-600 dark:text-gray-300'>
                            {totalTests > 0
                                ? `${passedTests}/${totalTests} tests passing`
                                : 'No tests added yet'}
                        </span>
                    </div>
                </div>
                <div className='flex items-center gap-2'>
                    {tests?.length > 0 && (
                        <button
                            onClick={() => onRunTests(conditions, tests)}
                            disabled={isRunningTests}
                            className='inline-flex items-center px-3 py-2 text-sm font-medium rounded-md bg-green-600 hover:bg-green-700 disabled:bg-green-600/50 text-white'>
                            {isRunningTests ? (
                                <Loader className='w-4 h-4 mr-2 animate-spin' />
                            ) : (
                                <Play className='w-4 h-4 mr-2' />
                            )}
                            Run Tests
                        </button>
                    )}
                    <button
                        onClick={() => setIsModalOpen(true)}
                        className='inline-flex items-center px-3 py-2 text-sm font-medium rounded-md bg-blue-600 hover:bg-blue-700 text-white'>
                        <Plus className='w-4 h-4 mr-2' />
                        Add Test
                    </button>
                </div>
            </div>

            {/* Test List */}
            <div className='flex-1 overflow-y-auto pr-2'>
                {tests?.length > 0 ? (
                    <div className='space-y-3'>
                        {tests.map(test => (
                            <FormatUnitTest
                                key={test.id}
                                test={test}
                                onDelete={() => setDeleteTestId(test.id)}
                                onEdit={() => handleEditTest(test)}
                            />
                        ))}
                    </div>
                ) : (
                    <div className='text-center py-12 bg-gray-50 dark:bg-gray-800/50 rounded-lg'>
                        <p className='text-gray-500 dark:text-gray-400'>
                            No tests added yet
                        </p>
                    </div>
                )}
            </div>

            {/* Modals */}
            <AddFormatTestModal
                isOpen={isModalOpen}
                onClose={handleCloseModal}
                onAdd={handleAddOrUpdateTest}
                editTest={editingTest}
                tests={tests}
            />

            <DeleteConfirmationModal
                isOpen={!!deleteTestId}
                onClose={() => setDeleteTestId(null)}
                onConfirm={handleDeleteTest}
            />
        </div>
    );
};

FormatTestingTab.propTypes = {
    conditions: PropTypes.arrayOf(
        PropTypes.shape({
            name: PropTypes.string.isRequired,
            type: PropTypes.string.isRequired,
            pattern: PropTypes.string,
            required: PropTypes.bool.isRequired,
            negate: PropTypes.bool.isRequired
        })
    ).isRequired,
    tests: PropTypes.arrayOf(
        PropTypes.shape({
            id: PropTypes.number.isRequired,
            input: PropTypes.string.isRequired,
            expected: PropTypes.bool.isRequired,
            passes: PropTypes.bool.isRequired,
            lastRun: PropTypes.string,
            conditionResults: PropTypes.array.isRequired
        })
    ).isRequired,
    onTestsChange: PropTypes.func.isRequired,
    isRunningTests: PropTypes.bool.isRequired,
    onRunTests: PropTypes.func.isRequired
};

export default FormatTestingTab;