import { module, test } from 'qunit';
import { setupRenderingTest } from 'ember-qunit';
import { click, fillIn, render } from '@ember/test-helpers';
import hbs from 'htmlbars-inline-precompile';
import contributors from '../../../fixtures/contributors';
import contributions from '../../../fixtures/contributions';

module('Integration | Component | contribution-list', function(hooks) {
  setupRenderingTest(hooks);

  test('it renders all contributions with grouped rows collapsed', async function(assert) {
    let kredits = this.owner.lookup('service:kredits');
    kredits.set('contributors', contributors);

    this.set('fixtures', contributions);
    await render(hbs`{{contribution-list contributions=fixtures}}`);

    // 9 contributions: 2 groups (ids 1+3, 7+8) + 5 singletons = 7 top-level rows
    assert.equal(this.element.querySelectorAll('li').length, 7, '7 top-level rows when collapsed');
    assert.equal(this.element.querySelectorAll('li.grouped').length, 2, '2 grouped headers');
    assert.equal(this.element.querySelectorAll('li.group-item').length, 0, 'no expanded sub-items');
  });

  test('it renders filtered contributions', async function(assert) {
    let kredits = this.owner.lookup('service:kredits');
    kredits.set('contributors', contributors);

    this.set('fixtures', contributions);
    await render(hbs`{{contribution-list contributions=fixtures showQuickFilter=true}}`);

    await fillIn('.filter-contributor select', '1');
    // Contributor 1 is in ids 1, 2, 5, 6, 8. Grouped rows stay whole: id 1's
    // group (with id 3) and id 8's group (with id 7) show as grouped rows
    // because id 1 / id 8 match; ids 2, 5, 6 are singletons. 5 top-level rows.
    assert.equal(this.element.querySelectorAll('li').length, 5, 'select contributor');

    await click('.filter-contribution-size input');
    // Hide small (<=500): drops id 6 only. Grouped rows stay (matching items
    // are 1500/1500). 4 top-level rows.
    assert.equal(this.element.querySelectorAll('li').length, 4, 'hide small contributions');

    await fillIn('.filter-contribution-kind select', 'dev');
    // Kind dev (still filtered to contributor 1, hide small on): only groups
    // where a single item passes all three filters survive. Group {1,3}: id 1
    // is contributor 1 + dev → included. Group {8,7}: id 8 is contributor 1 but
    // community; id 7 is dev but contributor 3 → no item passes both → excluded.
    // Singletons id 2 (ops), id 5 (design) → excluded. 1 top-level row.
    assert.equal(this.element.querySelectorAll('li').length, 1, 'select kind');
  });

  test('filtering by contributor keeps grouped rows whole', async function(assert) {
    let kredits = this.owner.lookup('service:kredits');
    kredits.set('contributors', contributors);

    this.set('fixtures', contributions);
    await render(hbs`{{contribution-list contributions=fixtures showQuickFilter=true}}`);

    await fillIn('.filter-contributor select', '1');

    // The first row is the group containing id 1 (contributor 1) and id 3
    // (contributor 2) — it stays grouped, not collapsed to a singleton.
    const firstRow = this.element.querySelector('li');
    assert.ok(firstRow.classList.contains('grouped'), 'first row is still grouped');
    assert.equal(firstRow.querySelectorAll('.avatars img').length, 2, 'shows both contributors avatars');
  });

  test('grouped row expands on click to reveal sub-items', async function(assert) {
    let kredits = this.owner.lookup('service:kredits');
    kredits.set('contributors', contributors);

    this.set('fixtures', contributions);
    await render(hbs`{{contribution-list contributions=fixtures}}`);

    assert.equal(this.element.querySelectorAll('li.group-item').length, 0, 'no sub-items when collapsed');

    await click('.grouped:first-child');

    assert.equal(this.element.querySelectorAll('li.group-item').length, 2, '2 sub-items when expanded');
    assert.ok(this.element.querySelector('.grouped').classList.contains('expanded'), 'header has expanded class');

    await click('.grouped:first-child');
    assert.equal(this.element.querySelectorAll('li.group-item').length, 0, 'sub-items hidden when collapsed');
  });

  test('grouped row shows stacked avatars and single amount', async function(assert) {
    let kredits = this.owner.lookup('service:kredits');
    kredits.set('contributors', contributors);

    this.set('fixtures', contributions);
    await render(hbs`{{contribution-list contributions=fixtures}}`);

    const firstGroup = this.element.querySelector('.grouped');
    // Group ids 1+3 → 2 contributors → 2 avatars, no overflow
    assert.equal(firstGroup.querySelectorAll('.avatars img').length, 2, '2 avatar images');
    assert.equal(firstGroup.querySelectorAll('.avatar-overflow').length, 0, 'no overflow bubble for 2 contributors');
    // Single amount (first item's amount = 1500, not the sum)
    assert.equal(firstGroup.querySelector('.amount').textContent.trim(), '1500', 'shows single contribution amount');
  });

  test('auto-expands when selectedContributionId is a group child', async function(assert) {
    let kredits = this.owner.lookup('service:kredits');
    kredits.set('contributors', contributors);

    this.set('fixtures', contributions);
    this.set('selectedId', 3);

    await render(hbs`{{contribution-list contributions=fixtures selectedContributionId=selectedId}}`);

    assert.equal(this.element.querySelectorAll('li.group-item').length, 2, 'group auto-expanded');

    const selectedChild = this.element.querySelector('.group-item.selected');
    assert.ok(selectedChild, 'selected child has selected class');
    assert.equal(selectedChild.dataset.contributionId, '3', 'correct child is selected');
  });
});