/**
 * @jest-environment jsdom
 */

/*
 * Runtime Web – Unified Serverless Framework for Full-Stack TypeScript Applications
 * Documentation: https://runtimeweb.com/docs/getting-started
 *
 * @template: ai-chat
 */

/**
 * Property-based tests for Code Architecture Compliance.
 *
 * **Property 10: Code Architecture Compliance**
 * **Validates: Requirements 12.1, 12.4, 12.6, 12.7**
 *
 * Property: All components SHALL follow established patterns, be properly exported,
 * and maintain consistent interfaces.
 *
 * @module components/chat/__tests__/Architecture.property.test
 */

import * as fc from 'fast-check';
import * as ChatExports from '../index';

describe('Architecture Property Tests', () => {
    /**
     * **Property 10: Code Architecture Compliance**
     * **Validates: Requirements 12.1, 12.4, 12.6, 12.7**
     */
    describe('Property 10: Code Architecture Compliance', () => {
        /**
         * Validates: Requirement 12.6
         * All new components SHALL be exported from barrel file.
         */
        describe('Barrel Exports', () => {
            const expectedComponents = [
                'MessageBubble',
                'MessageItem',
                'MessageList',
                'InputArea',
                'InputComposer',
                'BehaviorSelector',
                'LoadingIndicator',
                'TypingIndicator',
                'EmptyState',
                'ErrorMessage',
                'ErrorState',
                'SessionIndicator',
                'ChatPage',
            ];

            const expectedTypes = [
                'MessageBubbleProps',
                'MessageItemProps',
                'InputComposerProps',
                'EmptyStateProps',
                'ErrorStateProps',
                'SessionIndicatorProps',
            ];

            it('all required components are exported', () => {
                fc.assert(
                    fc.property(
                        fc.constantFrom(...expectedComponents),
                        (componentName) => {
                            expect(ChatExports).toHaveProperty(componentName);
                            expect(typeof (ChatExports as Record<string, unknown>)[componentName]).toBe('function');
                        }
                    ),
                    { numRuns: expectedComponents.length },
                );
            });

            it('exports are React components (functions)', () => {
                fc.assert(
                    fc.property(
                        fc.constantFrom(...expectedComponents),
                        (componentName) => {
                            const component = (ChatExports as Record<string, unknown>)[componentName];
                            expect(typeof component).toBe('function');
                        }
                    ),
                    { numRuns: expectedComponents.length },
                );
            });
        });

        /**
         * Validates: Requirement 12.1
         * Components SHALL follow TypeScript strict mode.
         */
        describe('TypeScript Compliance', () => {
            it('components are properly typed (no runtime type errors)', () => {
                fc.assert(
                    fc.property(fc.constant(true), () => {
                        // If this test runs, TypeScript compilation succeeded
                        // which validates strict mode compliance
                        expect(ChatExports.MessageBubble).toBeDefined();
                        expect(ChatExports.InputComposer).toBeDefined();
                        expect(ChatExports.EmptyState).toBeDefined();
                        expect(ChatExports.ErrorState).toBeDefined();
                        expect(ChatExports.SessionIndicator).toBeDefined();
                        expect(ChatExports.TypingIndicator).toBeDefined();
                    }),
                    { numRuns: 5 },
                );
            });
        });

        /**
         * Validates: Requirement 12.4
         * Components SHALL be isomorphic (SSR-safe).
         */
        describe('SSR Safety', () => {
            it('components can be imported without browser APIs', () => {
                fc.assert(
                    fc.property(fc.constant(true), () => {
                        // If imports succeed without errors, components are SSR-safe
                        // Browser APIs would throw during import in Node.js environment
                        expect(() => {
                            const { MessageBubble } = ChatExports;
                            const { InputComposer } = ChatExports;
                            const { EmptyState } = ChatExports;
                            const { ErrorState } = ChatExports;
                            const { SessionIndicator } = ChatExports;
                            const { TypingIndicator } = ChatExports;
                            const { MessageList } = ChatExports;
                            const { ChatPage } = ChatExports;
                        }).not.toThrow();
                    }),
                    { numRuns: 5 },
                );
            });
        });

        /**
         * Validates: Requirement 12.7
         * Components SHALL follow consistent naming conventions.
         */
        describe('Naming Conventions', () => {
            it('component names follow PascalCase convention', () => {
                fc.assert(
                    fc.property(fc.constant(true), () => {
                        const exportNames = Object.keys(ChatExports);
                        const componentNames = exportNames.filter(
                            (name) => typeof (ChatExports as Record<string, unknown>)[name] === 'function'
                        );

                        componentNames.forEach((name) => {
                            // PascalCase: starts with uppercase, no underscores or hyphens
                            expect(name).toMatch(/^[A-Z][a-zA-Z0-9]*$/);
                        });
                    }),
                    { numRuns: 5 },
                );
            });

            it('type exports follow PascalCase with Props suffix', () => {
                fc.assert(
                    fc.property(fc.constant(true), () => {
                        const exportNames = Object.keys(ChatExports);
                        const typeNames = exportNames.filter((name) => name.endsWith('Props'));

                        typeNames.forEach((name) => {
                            // Should be PascalCase ending with Props
                            expect(name).toMatch(/^[A-Z][a-zA-Z0-9]*Props$/);
                        });
                    }),
                    { numRuns: 5 },
                );
            });
        });

        /**
         * Validates: Component count matches expected
         */
        describe('Export Completeness', () => {
            it('exports expected number of components', () => {
                fc.assert(
                    fc.property(fc.constant(true), () => {
                        const exportNames = Object.keys(ChatExports);
                        const componentNames = exportNames.filter(
                            (name) => typeof (ChatExports as Record<string, unknown>)[name] === 'function'
                        );

                        // Should have at least 13 components
                        expect(componentNames.length).toBeGreaterThanOrEqual(13);
                    }),
                    { numRuns: 5 },
                );
            });

            it('no undefined exports', () => {
                fc.assert(
                    fc.property(fc.constant(true), () => {
                        const exportNames = Object.keys(ChatExports);

                        exportNames.forEach((name) => {
                            const exportValue = (ChatExports as Record<string, unknown>)[name];
                            expect(exportValue).toBeDefined();
                        });
                    }),
                    { numRuns: 5 },
                );
            });
        });
    });
});
