import { ribbit, resetDOM } from './setup';

const lib = ribbit();

describe('RibbitEmitter', () => {
    beforeEach(() => resetDOM());

    it('fires save event', () => {
        const editor = new lib.Editor({});
        editor.run();
        let received: any = null;
        editor.on('save', (payload: any) => {
            received = payload;
        });
        editor.save();
        expect(received).toHaveProperty('markdown');
        expect(received).toHaveProperty('html');
    });

    it('off removes handler', () => {
        const editor = new lib.Editor({});
        editor.run();
        let count = 0;
        const handler = () => {
            count++;
        };
        editor.on('save', handler);
        editor.save();
        editor.off('save', handler);
        editor.save();
        expect(count).toBe(1);
    });

    it('multiple listeners', () => {
        const editor = new lib.Editor({});
        editor.run();
        let count = 0;
        editor.on('save', () => {
            count++;
        });
        editor.on('save', () => {
            count++;
        });
        editor.save();
        expect(count).toBe(2);
    });
});

describe('Ribbit viewer', () => {
    beforeEach(() => resetDOM('**bold**'));

    it('starts with null state', () => {
        const viewer = new lib.Viewer({});
        expect(viewer.getState()).toBeNull();
    });

    it('run sets view state', () => {
        const viewer = new lib.Viewer({});
        viewer.run();
        expect(viewer.getState()).toBe('view');
    });

    it('renders html', () => {
        const viewer = new lib.Viewer({});
        viewer.run();
        expect(viewer.element.innerHTML).toContain('<strong>bold</strong>');
    });

    it('getMarkdown returns source', () => {
        const viewer = new lib.Viewer({});
        expect(viewer.getMarkdown()).toBe('**bold**');
    });
});

describe('Ribbit events', () => {
    it('ready fires on run', () => {
        resetDOM('hello');
        let payload: any = null;
        const viewer = new lib.Viewer({
            on: {
                ready: (eventPayload: any) => {
                    payload = eventPayload;
                },
            },
        });
        viewer.run();
        expect(payload).toHaveProperty('markdown');
        expect(payload).toHaveProperty('mode', 'view');
        expect(payload.theme.name).toBe('ribbit-default');
    });
});

describe('RibbitEditor modes', () => {
    beforeEach(() => resetDOM('**bold**'));

    it('starts in view', () => {
        const editor = new lib.Editor({});
        editor.run();
        expect(editor.getState()).toBe('view');
    });

    it('switches to wysiwyg', () => {
        const editor = new lib.Editor({});
        editor.run();
        editor.wysiwyg();
        expect(editor.getState()).toBe('wysiwyg');
        expect(editor.element.contentEditable).toBe('true');
    });

    it('switches to edit', () => {
        const editor = new lib.Editor({});
        editor.run();
        editor.wysiwyg();
        editor.edit();
        expect(editor.getState()).toBe('edit');
    });

    it('switches back to view', () => {
        const editor = new lib.Editor({});
        editor.run();
        editor.wysiwyg();
        editor.view();
        expect(editor.getState()).toBe('view');
        expect(editor.element.contentEditable).toBe('false');
    });

    it('fires modeChange events', () => {
        const modes: string[] = [];
        const editor = new lib.Editor({
            on: {
                modeChange: ({ current }: any) => {
                    modes.push(current);
                },
            },
        });
        editor.run();
        editor.wysiwyg();
        editor.edit();
        editor.view();
        expect(modes).toEqual(['view', 'wysiwyg', 'edit', 'view']);
    });

    it('sourceMode disabled blocks edit', () => {
        resetDOM();
        const editor = new lib.Editor({
            currentTheme: 'no-source',
            themes: [{
                name: 'no-source',
                features: { sourceMode: false },
            }],
        });
        editor.run();
        editor.wysiwyg();
        editor.edit();
        expect(editor.getState()).toBe('wysiwyg');
    });
});

describe('ThemeManager', () => {
    beforeEach(() => resetDOM());

    it('lists registered themes', () => {
        const editor = new lib.Editor({ themes: [{ name: 'dark' }] });
        editor.run();
        expect(editor.themes.list()).toContain('ribbit-default');
        expect(editor.themes.list()).toContain('dark');
    });

    it('set switches theme', () => {
        const editor = new lib.Editor({ themes: [{ name: 'dark' }] });
        editor.run();
        editor.themes.set('dark');
        expect(editor.themes.current().name).toBe('dark');
    });

    it('disable hides from list', () => {
        const editor = new lib.Editor({ themes: [{ name: 'dark' }] });
        editor.run();
        editor.themes.disable('dark');
        expect(editor.themes.list()).not.toContain('dark');
    });

    it('enable restores to list', () => {
        const editor = new lib.Editor({ themes: [{ name: 'dark' }] });
        editor.run();
        editor.themes.disable('dark');
        editor.themes.enable('dark');
        expect(editor.themes.list()).toContain('dark');
    });

    it('set disabled throws', () => {
        const editor = new lib.Editor({ themes: [{ name: 'dark' }] });
        editor.run();
        editor.themes.disable('dark');
        expect(() => editor.themes.set('dark')).toThrow();
    });

    it('set unknown throws', () => {
        const editor = new lib.Editor({});
        editor.run();
        expect(() => editor.themes.set('nonexistent')).toThrow();
    });

    it('remove active throws', () => {
        const editor = new lib.Editor({});
        editor.run();
        expect(() => editor.themes.remove(editor.themes.current().name)).toThrow();
    });

    it('fires themeChange', () => {
        let payload: any = null;
        const editor = new lib.Editor({
            themes: [{ name: 'dark' }],
            on: {
                themeChange: (eventPayload: any) => {
                    payload = eventPayload;
                },
            },
        });
        editor.run();
        editor.themes.set('dark');
        expect(payload.current.name).toBe('dark');
        expect(payload.previous.name).toBe('ribbit-default');
    });
});


describe('defaultTheme', () => {
    it('has correct shape', () => {
        expect(lib.defaultTheme.name).toBe('ribbit-default');
        expect(lib.defaultTheme.tags).toBeDefined();
        expect(lib.defaultTheme.features.sourceMode).toBe(true);
    });
});

describe('Utility functions', () => {
    it('encodeHtmlEntities', () => {
        expect(lib.encodeHtmlEntities('<')).toBe('&#60;');
        expect(lib.encodeHtmlEntities('>')).toBe('&#62;');
        expect(lib.encodeHtmlEntities('&')).toBe('&#38;');
    });

    it('decodeHtmlEntities', () => {
        expect(lib.decodeHtmlEntities('&#60;')).toBe('<');
        expect(lib.decodeHtmlEntities('&amp;')).toBe('&');
    });

    it('camelCase', () => {
        expect(lib.camelCase('hello').join('')).toBe('Hello');
        expect(lib.camelCase('hello world').join(' ')).toBe('Hello World');
    });
});

describe('Editor htmlToMarkdown', () => {
    beforeEach(() => resetDOM());

    it('converts strong', () => {
        const editor = new lib.Editor({});
        editor.run();
        expect(editor.htmlToMarkdown('<strong>bold</strong>')).toBe('**bold**');
    });

    it('converts em', () => {
        const editor = new lib.Editor({});
        editor.run();
        expect(editor.htmlToMarkdown('<em>italic</em>')).toBe('*italic*');
    });
});