// src/services/stockService.js
// 股票数据服务 - 模糊搜索工具函数
// 注意: getAllStocks 已迁移到 Redux (stockSlice.loadAllStocks)

/**
 * 股票数据服务
 */
export const stockService = {
    /**
     * 模糊搜索股票（匹配 code 或 name）
     * @param {string} query - 搜索关键词
     * @param {Array<{code: string, name: string}>} stockList - 股票列表
     * @param {number} limit - 返回结果数量限制
     * @returns {Array<{code: string, name: string}>}
     */
    fuzzySearch(query, stockList, limit = 10) {
        if (!query || !stockList || stockList.length === 0) {
            return [];
        }

        const lowerQuery = query.toLowerCase();

        // 模糊匹配 code 或 name
        const results = stockList.filter(stock => {
            const code = (stock.code || '').toString().toLowerCase();
            const name = (stock.name || '').toLowerCase();
            return code.includes(lowerQuery) || name.includes(lowerQuery);
        });

        // 优先级排序：
        // 1. code 精确匹配
        // 2. name 精确匹配
        // 3. code 开头匹配
        // 4. name 开头匹配
        // 5. 其他包含匹配
        results.sort((a, b) => {
            const aCode = (a.code || '').toString().toLowerCase();
            const aName = (a.name || '').toLowerCase();
            const bCode = (b.code || '').toString().toLowerCase();
            const bName = (b.name || '').toLowerCase();

            // 精确匹配
            if (aCode === lowerQuery) return -1;
            if (bCode === lowerQuery) return 1;
            if (aName === lowerQuery) return -1;
            if (bName === lowerQuery) return 1;

            // 开头匹配
            if (aCode.startsWith(lowerQuery) && !bCode.startsWith(lowerQuery)) return -1;
            if (!aCode.startsWith(lowerQuery) && bCode.startsWith(lowerQuery)) return 1;
            if (aName.startsWith(lowerQuery) && !bName.startsWith(lowerQuery)) return -1;
            if (!aName.startsWith(lowerQuery) && bName.startsWith(lowerQuery)) return 1;

            // 字母顺序
            return aCode.localeCompare(bCode);
        });

        return results.slice(0, limit);
    }
};