// @vitest-environment jsdom
import { readFileSync } from 'node:fs';
import { resolve } from 'node:path';

import { describe, expect, test } from 'vitest';

import {
  declaration,
  parseStyleSheet,
  resolveDeclarations,
  type StyleRule,
} from './styleCascade';

/**
 * 侧栏样式的声明级断言。
 *
 * jsdom 不加载这个 CSS 文件，所以这里按仓库既有做法（`styleCascade`）直接解析**真实生效的声明**：
 * 「状态 tone 映射」「等宽数字」「圆角 / 悬停」「过渡」「reduced-motion 关动效」都用声明钉住。
 */
const SIDEBAR_CSS_PATH = resolve(
  process.cwd(),
  'apps/ai-game-creator-shell/src/features/resource-canvas/resourceCanvasAssetGenerationTasksSidebar.css',
);
const rules = parseStyleSheet(readFileSync(SIDEBAR_CSS_PATH, 'utf8'));

/**
 * `styleCascade` 的求值器只认识宽度媒体查询，遇到 `prefers-reduced-motion` 会主动报错；
 * 那条规则的生效与否单独在下面按声明断言，所以求值时先把它排除掉。
 */
const widthRules = rules.filter(
  (rule) => !(rule.media ?? '').includes('prefers-reduced-motion'),
);

function resolved(
  selectors: readonly string[],
  viewportWidth = 1280,
): Map<string, string> {
  return resolveDeclarations(widthRules, selectors, viewportWidth);
}

function toneRule(tone: string): StyleRule | undefined {
  return rules.find((rule) =>
    rule.selectors.includes(
      `.game-resource-generation-task-badge[data-tone='${tone}']`,
    ),
  );
}

describe('「生成任务」侧栏样式', () => {
  test('四种状态各有一档 tone，取值全部来自平台 token 而不硬编码颜色', () => {
    const tones = ['queued', 'running', 'completed', 'failed'] as const;
    const resolvedTones = tones.map((tone) =>
      resolved([
        '.game-resource-generation-task-badge',
        `.game-resource-generation-task-badge[data-tone='${tone}']`,
      ]),
    );
    const signature = (map: Map<string, string>) =>
      ['border-color', 'background', 'color']
        .map((property) => declaration(map, property))
        .join(' | ');

    const signatures = resolvedTones.map(signature);
    // 四档必须互不相同，否则「状态徽标成体系」这条就退化成同一个样子。
    expect(new Set(signatures).size).toBe(4);
    expect(signatures[0]).toContain('--platform-neutral');
    expect(signatures[1]).toContain('--platform-accent');
    expect(signatures[2]).toContain('--platform-success');
    expect(signatures[3]).toContain('--platform-button-danger');
    for (const one of signatures) {
      expect(one).not.toMatch(/#[0-9a-f]{3,8}|rgba?\(|hsla?\(/iu);
    }
    // 四档 tone 必须在 CSS 里真实存在（少一档这条断言就红）。
    for (const tone of tones) {
      expect(toneRule(tone)).toBeDefined();
    }
  });

  test('生成中只有「在动」的呼吸感，没有伪造百分比', () => {
    const running = resolved([
      '.game-resource-generation-task-badge',
      ".game-resource-generation-task-badge[data-tone='running']",
    ]);
    // 徽标本身不承载进度数值：文案由组件按后端状态给，样式里不出现百分比工具。
    expect(declaration(running, 'color')).toBe('var(--platform-accent)');
    const pulse = rules.find((rule) =>
      rule.selectors.includes(
        ".game-resource-generation-task-badge[data-tone='running']::before",
      ),
    );
    expect(pulse?.declarations.get('animation')).toContain('pulse');
  });

  test('阶段是次要信息、已耗时等宽数字右对齐', () => {
    const phase = resolved(['.game-resource-generation-task-card-phase']);
    expect(declaration(phase, 'color')).toBe('var(--platform-text-muted)');
    expect(declaration(phase, 'font-size')).toBe('0.7rem');

    const elapsed = resolved(['.game-resource-generation-task-card-elapsed']);
    expect(declaration(elapsed, 'font-variant-numeric')).toBe('tabular-nums');
    expect(declaration(elapsed, 'text-align')).toBe('right');
  });

  test('条目卡片有圆角与悬停反馈，失败原因可折行不截断', () => {
    const card = resolved(['.game-resource-generation-task-card']);
    expect(declaration(card, 'border-radius')).toBe('0.5rem');

    const hover = resolved([
      '.game-resource-generation-task-card',
      '.game-resource-generation-task-card:hover',
    ]);
    expect(declaration(hover, 'box-shadow')).toBe(
      'var(--platform-desktop-hover-shadow)',
    );
    expect(declaration(hover, 'transform')).toBe('translateY(-1px)');

    const error = resolved(['.game-resource-generation-task-card-error']);
    expect(declaration(error, 'white-space')).toBe('normal');
    expect(declaration(error, 'overflow-wrap')).toBe('anywhere');

    const locate = resolved(['.game-resource-generation-task-locate']);
    expect(declaration(locate, 'text-decoration')).toContain('underline');
  });

  test('进场动画留在侧栏上，删除的折叠把手不再有样式残留', () => {
    const sidebar = resolved(['.game-resource-generation-tasks-sidebar']);
    expect(declaration(sidebar, 'animation')).toContain(
      'game-resource-generation-tasks-enter',
    );
    expect(declaration(sidebar, 'border-radius')).toBe('0.75rem');
    expect(declaration(sidebar, 'backdrop-filter')).toBe('blur(10px)');

    // 折叠把手与底部关闭条都已删除：对应类名不得再出现在样式表里。
    for (const removed of [
      '.game-resource-generation-tasks-handle',
      '.game-resource-generation-tasks-handle-label',
      '.game-resource-generation-tasks-handle-badge',
      '.game-resource-generation-tasks-sidebar-footer',
    ]) {
      expect(rules.some((rule) => rule.selectors.includes(removed))).toBe(
        false,
      );
    }
  });

  test('收起与进场同源反向：is-leaving 挂上收起动画，减动效下同样关掉', () => {
    const leaving = resolved([
      '.game-resource-generation-tasks-sidebar',
      '.game-resource-generation-tasks-sidebar.is-leaving',
    ]);
    const animation = declaration(leaving, 'animation');
    expect(animation).toContain('game-resource-generation-tasks-leave');
    expect(animation).toContain('160ms');
    // 动画期间不该还能点到里面（此刻它在播退场，点它只会在卸载前留下半截状态）。
    expect(declaration(leaving, 'pointer-events')).toBe('none');
    expect(
      rules.some((rule) =>
        rule.selectors.includes(
          '.game-resource-generation-tasks-sidebar.is-leaving',
        ),
      ),
    ).toBe(true);

    // 减少动效：收起动画同样关掉，组件那边会立即卸载，不白等 160ms。
    const reduced = rules.filter((rule) =>
      (rule.media ?? '').includes('prefers-reduced-motion'),
    );
    expect(
      reduced.some(
        (rule) =>
          rule.selectors.includes(
            '.game-resource-generation-tasks-sidebar.is-leaving',
          ) && rule.declarations.get('animation') === 'none',
      ),
    ).toBe(true);
  });

  test('列表滚动条是细样式，滚动区域有界', () => {
    const scroll = resolved(['.game-resource-generation-tasks-scroll']);
    expect(declaration(scroll, 'overflow-y')).toBe('auto');
    expect(declaration(scroll, 'scrollbar-width')).toBe('thin');
    expect(declaration(scroll, 'overscroll-behavior')).toBe('contain');
    const thumb = rules.find((rule) =>
      rule.selectors.includes(
        '.game-resource-generation-tasks-scroll::-webkit-scrollbar-thumb',
      ),
    );
    expect(thumb?.declarations.get('background')).toBe(
      'var(--platform-line-soft)',
    );

    // 侧栏高度有界：上下边界都给死，不靠内容撑高（内容再多也只滚列表）。
    const sidebar = resolved(['.game-resource-generation-tasks-sidebar']);
    expect(declaration(sidebar, 'top')).toBe('4rem');
    expect(declaration(sidebar, 'bottom')).toBe('6rem');
    expect(declaration(sidebar, 'width')).toBe('min(300px, 80vw)');
  });

  test('窄屏（360px）下侧栏不溢出不挡把手', () => {
    const narrow = resolved(['.game-resource-generation-tasks-sidebar'], 360);
    expect(declaration(narrow, 'width')).toBe('auto');
    expect(declaration(narrow, 'left')).toBe('0.5rem');
    expect(declaration(narrow, 'right')).toBe('0.5rem');
  });

  test('prefers-reduced-motion 下进场动画与过渡都被关掉', () => {
    const reduced = rules.filter((rule) =>
      (rule.media ?? '').includes('prefers-reduced-motion'),
    );
    expect(reduced.length).toBeGreaterThan(0);
    const motionless = (selector: string, property: string) =>
      reduced.some(
        (rule) =>
          rule.selectors.includes(selector) &&
          rule.declarations.get(property) === 'none',
      );
    expect(
      motionless('.game-resource-generation-tasks-sidebar', 'animation'),
    ).toBe(true);
    expect(
      motionless('.game-resource-generation-task-card', 'transition'),
    ).toBe(true);
  });

  test('焦点环可见（键盘可见焦点用平台 token）', () => {
    const focusRule = rules.find((rule) =>
      rule.selectors.includes(
        '.game-resource-generation-tasks-sidebar-icon-button:focus-visible',
      ),
    );
    expect(focusRule?.declarations.get('outline')).toBe(
      '2px solid var(--platform-accent)',
    );
    expect(focusRule?.declarations.get('box-shadow')).toBe(
      '0 0 0 3px var(--platform-input-focus-ring)',
    );
  });
});