// 主题工具函数
import { themeConfig } from '@/sheep/config/theme';

/**
 * 获取主题色
 * @param {string} type - 主题色类型 'main' | 'light' | 'dark'
 * @returns {string} 颜色值
 */
export function getThemeColor(type = 'main') {
  return themeConfig.primary[type] || themeConfig.primary.main;
}

/**
 * 获取主题色透明度版本
 * @param {number} opacity - 透明度 1-5
 * @returns {string} rgba颜色值
 */
export function getThemeColorWithOpacity(opacity = 1) {
  return themeConfig.primary.opacity[opacity] || themeConfig.primary.opacity[1];
}

/**
 * 获取语义化颜色
 * @param {string} type - 颜色类型 'success' | 'warning' | 'danger' | 'info'
 * @returns {string} 颜色值
 */
export function getSemanticColor(type) {
  return themeConfig.colors[type] || themeConfig.colors.info;
}

/**
 * 获取文本颜色
 * @param {string} type - 文本类型 'primary' | 'regular' | 'secondary' | 'placeholder'
 * @returns {string} 颜色值
 */
export function getTextColor(type = 'primary') {
  return themeConfig.colors.text[type] || themeConfig.colors.text.primary;
}

/**
 * 获取边框颜色
 * @param {string} type - 边框类型 'base' | 'light' | 'lighter' | 'extra_light'
 * @returns {string} 颜色值
 */
export function getBorderColor(type = 'base') {
  return themeConfig.colors.border[type] || themeConfig.colors.border.base;
}

/**
 * 获取背景颜色
 * @param {string} type - 背景类型 'base' | 'page' | 'card'
 * @returns {string} 颜色值
 */
export function getBackgroundColor(type = 'base') {
  return themeConfig.colors.background[type] || themeConfig.colors.background.base;
}

/**
 * 设置主题色
 * @param {string} color - 新的主题色
 */
export function setThemeColor(color) {
  // 更新主题配置
  themeConfig.primary.main = color;
  // 生成相关颜色
  themeConfig.primary.light = lightenColor(color, 20);
  themeConfig.primary.dark = darkenColor(color, 20);
  // 生成透明度颜色
  const rgb = hexToRgb(color);
  for (let i = 1; i <= 5; i++) {
    themeConfig.primary.opacity[i] = `rgba(${rgb.r}, ${rgb.g}, ${rgb.b}, 0.${i})`;
  }
}

/**
 * 十六进制颜色转RGB
 */
function hexToRgb(hex) {
  const result = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
  return result ? {
    r: parseInt(result[1], 16),
    g: parseInt(result[2], 16),
    b: parseInt(result[3], 16)
  } : null;
}

/**
 * 颜色变亮
 */
function lightenColor(hex, percent) {
  const rgb = hexToRgb(hex);
  if (!rgb) return hex;
  
  const factor = percent / 100;
  rgb.r = Math.round(rgb.r + (255 - rgb.r) * factor);
  rgb.g = Math.round(rgb.g + (255 - rgb.g) * factor);
  rgb.b = Math.round(rgb.b + (255 - rgb.b) * factor);
  
  return `#${rgb.r.toString(16).padStart(2, '0')}${rgb.g.toString(16).padStart(2, '0')}${rgb.b.toString(16).padStart(2, '0')}`;
}

/**
 * 颜色变暗
 */
function darkenColor(hex, percent) {
  const rgb = hexToRgb(hex);
  if (!rgb) return hex;
  
  const factor = percent / 100;
  rgb.r = Math.round(rgb.r * (1 - factor));
  rgb.g = Math.round(rgb.g * (1 - factor));
  rgb.b = Math.round(rgb.b * (1 - factor));
  
  return `#${rgb.r.toString(16).padStart(2, '0')}${rgb.g.toString(16).padStart(2, '0')}${rgb.b.toString(16).padStart(2, '0')}`;
}

export default {
  getThemeColor,
  getThemeColorWithOpacity,
  getSemanticColor,
  getTextColor,
  getBorderColor,
  getBackgroundColor,
  setThemeColor
};