/**
 * Tests for PopoverManager
 */

import { PopoverManager } from '../../resources/js/modules/livecomponent/PopoverManager.js';

describe('PopoverManager', () => {
    let manager;
    let anchor;

    beforeEach(() => {
        // Create anchor element for testing
        anchor = document.createElement('button');
        anchor.id = 'test-anchor';
        anchor.textContent = 'Anchor';
        document.body.appendChild(anchor);

        manager = new PopoverManager();
    });

    afterEach(() => {
        if (manager) {
            manager.destroy();
        }
        if (anchor && anchor.parentNode) {
            anchor.parentNode.removeChild(anchor);
        }
        // Clean up any remaining popovers
        document.querySelectorAll('.livecomponent-popover').forEach(el => el.remove());
    });

    describe('show', () => {
        it('should create and show popover', () => {
            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                content: 'Test content',
                position: 'top'
            });

            expect(popover).toBeDefined();
            expect(popover.element).toBeDefined();
            
            const popoverElement = document.querySelector('.livecomponent-popover');
            expect(popoverElement).toBeTruthy();
        });

        it('should return null when anchorId is missing', () => {
            const popover = manager.show('test-popover', {
                content: 'Test content'
            });

            expect(popover).toBeNull();
        });

        it('should return null when anchor element not found', () => {
            const popover = manager.show('test-popover', {
                anchorId: 'non-existent',
                content: 'Test content'
            });

            expect(popover).toBeNull();
        });

        it('should position popover relative to anchor', () => {
            anchor.style.position = 'absolute';
            anchor.style.top = '100px';
            anchor.style.left = '200px';
            anchor.style.width = '100px';
            anchor.style.height = '50px';

            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                content: 'Test',
                position: 'top',
                offset: 10
            });

            expect(popover).toBeDefined();
            const popoverElement = popover.element;
            
            // Check that popover is positioned
            expect(popoverElement.style.position).toBe('fixed');
            expect(popoverElement.style.top).toBeTruthy();
            expect(popoverElement.style.left).toBeTruthy();
        });

        it('should include title when provided', () => {
            manager.show('test-popover', {
                anchorId: 'test-anchor',
                title: 'Test Title',
                content: 'Test content'
            });

            const titleElement = document.querySelector('.popover-title');
            expect(titleElement).toBeTruthy();
            expect(titleElement.textContent).toBe('Test Title');
        });

        it('should include arrow when showArrow is true', () => {
            manager.show('test-popover', {
                anchorId: 'test-anchor',
                showArrow: true,
                content: 'Test'
            });

            const arrow = document.querySelector('.popover-arrow');
            expect(arrow).toBeTruthy();
        });

        it('should not include arrow when showArrow is false', () => {
            manager.show('test-popover', {
                anchorId: 'test-anchor',
                showArrow: false,
                content: 'Test'
            });

            const arrow = document.querySelector('.popover-arrow');
            expect(arrow).toBeFalsy();
        });
    });

    describe('hide', () => {
        it('should hide popover', () => {
            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                content: 'Test'
            });

            expect(manager.popovers.has('test-popover')).toBe(true);

            manager.hide('test-popover');

            expect(manager.popovers.has('test-popover')).toBe(false);
        });

        it('should handle hiding non-existent popover gracefully', () => {
            expect(() => {
                manager.hide('non-existent');
            }).not.toThrow();
        });
    });

    describe('position calculation', () => {
        beforeEach(() => {
            anchor.style.position = 'absolute';
            anchor.style.top = '100px';
            anchor.style.left = '200px';
            anchor.style.width = '100px';
            anchor.style.height = '50px';
        });

        it('should position popover on top', () => {
            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                position: 'top',
                offset: 10
            });

            const rect = popover.element.getBoundingClientRect();
            const anchorRect = anchor.getBoundingClientRect();

            expect(rect.bottom).toBeLessThan(anchorRect.top);
        });

        it('should position popover on bottom', () => {
            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                position: 'bottom',
                offset: 10
            });

            const rect = popover.element.getBoundingClientRect();
            const anchorRect = anchor.getBoundingClientRect();

            expect(rect.top).toBeGreaterThan(anchorRect.bottom);
        });

        it('should position popover on left', () => {
            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                position: 'left',
                offset: 10
            });

            const rect = popover.element.getBoundingClientRect();
            const anchorRect = anchor.getBoundingClientRect();

            expect(rect.right).toBeLessThan(anchorRect.left);
        });

        it('should position popover on right', () => {
            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                position: 'right',
                offset: 10
            });

            const rect = popover.element.getBoundingClientRect();
            const anchorRect = anchor.getBoundingClientRect();

            expect(rect.left).toBeGreaterThan(anchorRect.right);
        });
    });

    describe('auto positioning', () => {
        it('should choose best position when position is auto', () => {
            anchor.style.position = 'absolute';
            anchor.style.top = '50px';
            anchor.style.left = '50px';

            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                position: 'auto',
                offset: 10
            });

            expect(popover).toBeDefined();
            // Should position successfully
            expect(popover.element.style.position).toBe('fixed');
        });
    });

    describe('viewport boundary detection', () => {
        it('should keep popover within viewport', () => {
            // Position anchor near top-left corner
            anchor.style.position = 'absolute';
            anchor.style.top = '10px';
            anchor.style.left = '10px';

            const popover = manager.show('test-popover', {
                anchorId: 'test-anchor',
                position: 'top',
                offset: 100 // Large offset that would push outside viewport
            });

            const rect = popover.element.getBoundingClientRect();
            expect(rect.top).toBeGreaterThanOrEqual(0);
            expect(rect.left).toBeGreaterThanOrEqual(0);
        });
    });

    describe('destroy', () => {
        it('should cleanup all popovers', () => {
            manager.show('popover-1', { anchorId: 'test-anchor', content: 'Test 1' });
            manager.show('popover-2', { anchorId: 'test-anchor', content: 'Test 2' });

            expect(manager.popovers.size).toBeGreaterThan(0);

            manager.destroy();

            expect(manager.popovers.size).toBe(0);
        });
    });

    describe('Popover API detection', () => {
        it('should detect Popover API support', () => {
            // This test checks if the manager correctly detects API support
            // Actual behavior depends on browser environment
            expect(manager.usePopoverAPI).toBeDefined();
            expect(typeof manager.usePopoverAPI).toBe('boolean');
        });
    });
});