import { createApp, h, nextTick, reactive, ref } from 'vue';
import TicketDescriptionEditor from '../../resources/js/components/tickets/TicketDescriptionEditor.vue';
import TicketDescription from '../../resources/js/components/tickets/TicketDescription.vue';
import { createLocalization } from '../../resources/js/lib/localization';
import '../../resources/css/app.css';

const original = 'First line\nSecond line\n\n**Existing bold**';
const state = reactive({
    value: original,
    disabled: false,
    error: '',
    result: 'Running browser checks…',
    updates: 0,
});
const component = ref(null);
const app = createApp({
    render: () =>
        h('main', { class: 'mx-auto max-w-3xl space-y-6 p-6' }, [
            h(
                'h1',
                { class: 'text-xl font-semibold' },
                'Ticket description editor',
            ),
            h('p', { id: 'test-result', role: 'status' }, state.result),
            h(TicketDescriptionEditor, {
                ref: component,
                id: 'description',
                label: 'Description',
                modelValue: state.value,
                disabled: state.disabled,
                error: state.error,
                'onUpdate:modelValue': (value) => {
                    state.value = value;
                    state.updates++;
                },
            }),
            h('h2', { class: 'font-semibold' }, 'Saved description preview'),
            h(TicketDescription, { description: state.value }),
        ]),
}).use(createLocalization());
app.mount('#app');
const tick = async () => {
    await nextTick();
    await new Promise((resolve) => requestAnimationFrame(resolve));
};
const assert = (condition, message) => {
    if (!condition) {
        throw new Error(message);
    }
};
const button = (name) =>
    [...document.querySelectorAll('button')].find(
        (element) =>
            element.getAttribute('aria-label') === name ||
            element.textContent.trim() === name,
    );
const click = async (name) => {
    const element = button(name);
    assert(element && !element.disabled, `Button available: ${name}`);
    element.click();
    await tick();
};
try {
    await tick();
    const editor = component.value.$.setupState.editor;
    assert(editor, 'Editor mounted');
    assert(
        state.value === original && state.updates === 0,
        'Mount preserves exact source',
    );
    assert(
        document
            .querySelector('#description')
            .getAttribute('contenteditable') === 'true',
        'Visual textbox is editable',
    );
    assert(
        editor.getText().includes('First line\nSecond line'),
        'Legacy newlines retained',
    );
    state.value = 'Format this';
    await tick();
    editor.commands.selectAll();
    for (const name of ['Bold', 'Italic', 'Strikethrough']) {
        await click(name);
        assert(
            button(name).getAttribute('aria-pressed') === 'true',
            `${name} active`,
        );
    }
    assert(
        state.value.includes('**') && state.value.includes('~~'),
        'Formatting emits Markdown',
    );
    await click('Undo');
    assert(!editor.isActive('strike'), 'Undo restores prior state');
    await click('Redo');
    assert(editor.isActive('strike'), 'Redo restores formatting');
    await click('Markdown');
    const source = document.querySelector('textarea#description');
    assert(source.value === state.value, 'Source matches the editor output');
    source.value = '## From source\n\n- One\n- Two';
    source.dispatchEvent(new Event('input', { bubbles: true }));
    await tick();
    await click('Visual editor');
    assert(
        document.querySelector('#description h2')?.textContent ===
            'From source',
        'Source updates visual editor',
    );
    assert(
        document.querySelectorAll('#description li').length === 2,
        'Lists render after source switch',
    );
    for (const [name, selector] of [
        ['Bullet list', 'ul li'],
        ['Numbered list', 'ol li'],
        ['Quote', 'blockquote'],
        ['Inline code', 'code'],
        ['Code block', 'pre code'],
        ['Heading 2', 'h2'],
        ['Heading 3', 'h3'],
    ]) {
        state.value = `Check ${name}`;
        await tick();
        editor.commands.selectAll();
        await click(name);
        assert(
            document.querySelector(`#description ${selector}`),
            `${name} renders`,
        );
    }
    state.value = 'Link text';
    await tick();
    editor.commands.selectAll();
    await click('Add or edit link');
    assert(
        document.activeElement.id === 'description-link',
        'Link field receives focus',
    );
    const input = document.querySelector('#description-link');
    input.value = 'javascript:alert(1)';
    input.dispatchEvent(new Event('input', { bubbles: true }));
    await tick();
    await click('Apply link');
    assert(
        document
            .querySelector('#description-link-error')
            .textContent.includes('Enter a valid'),
        'Unsafe link rejected',
    );
    input.value = 'https://example.test/docs';
    input.dispatchEvent(new Event('input', { bubbles: true }));
    await tick();
    await click('Apply link');
    assert(
        state.value === '[Link text](https://example.test/docs)',
        'Selection becomes a Markdown link',
    );
    await click('Remove link');
    assert(state.value === 'Link text', 'Link can be removed');
    state.disabled = true;
    state.error = 'Description rejected.';
    await tick();
    assert(
        document
            .querySelector('#description')
            .getAttribute('contenteditable') === 'false',
        'Processing disables editing',
    );
    assert(
        document.querySelector('#description').getAttribute('aria-invalid') ===
            'true',
        'Server error reflected on editor',
    );
    assert(
        button('Bold').disabled && button('Markdown').disabled,
        'Processing disables controls',
    );
    assert(state.value === 'Link text', 'Validation retains draft');
    state.disabled = false;
    state.error = '';
    state.value = 'Reset draft';
    await tick();
    assert(editor.getText() === 'Reset draft', 'External reset syncs editor');
    editor.commands.selectAll();
    await click('Heading 1');
    assert(state.value.startsWith('# '), 'Heading command saves Markdown');
    editor.commands.clearContent();
    await tick();
    assert(state.value === '', 'Clearing editor saves an empty description');
    state.value = '| A | B |\n| - | - |\n| a | b |';
    await tick();
    assert(
        document.querySelector('textarea#description').value === state.value,
        'Unsupported content retained as source',
    );
    assert(button('Visual editor').disabled, 'Lossy conversion is unavailable');
    state.value =
        '# Plan\n\nUse **bold** and *italic* formatting, lists and [links](https://example.test).\n\n- Create ticket\n- Save description\n\n> Keep existing descriptions readable.';
    await tick();
    state.result =
        'Browser checks passed: formatting, undo/redo, source round-trip, links, errors, disabled state, reset, clearing and legacy content.';
} catch (error) {
    state.result = `FAILED: ${error.message}`;
    console.error(error);
}
window.addEventListener('pagehide', () => app.unmount(), { once: true });