220 lines
6.7 KiB
Go
220 lines
6.7 KiB
Go
package service
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import (
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"fmt"
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"sort"
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"strconv"
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"strings"
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"level_go/internal/model"
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)
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// GetLimitOpenCompareGroups 返回昨日涨停且今日继续涨停股票的开盘对比分组。
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//
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// 重点识别两类股票：今日开盘低于前收的股票，以及首板进二板且 11 点前首次涨停的股票。
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func (s *LimitBoardService) GetLimitOpenCompareGroups(tradeDate string) (model.LimitOpenCompareResponse, error) {
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resp := model.LimitOpenCompareResponse{TradeDate: tradeDate}
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tradeDates, dateIndex, err := s.loadTradeCalendar(tradeDate)
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if err != nil {
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return resp, err
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}
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if dateIndex == -1 {
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resp.Groups = buildLimitOpenCompareGroups(nil, nil)
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return resp, nil
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}
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previousTradeDate := ""
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if dateIndex > 0 {
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previousTradeDate = tradeDates[dateIndex-1]
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}
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resp.PreviousTradeDate = previousTradeDate
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previousTwoTradeDate := ""
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if dateIndex > 1 {
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previousTwoTradeDate = tradeDates[dateIndex-2]
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}
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resp.PreviousTwoTradeDate = previousTwoTradeDate
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stocks, err := s.loadLimitOpenCompareStocks(tradeDate, previousTradeDate, previousTwoTradeDate)
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if err != nil {
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return resp, err
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}
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openLowerStocks := make([]model.LimitOpenCompareStock, 0)
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otherStocks := make([]model.LimitOpenCompareStock, 0)
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firstToSecondBoardCount := 0
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firstSecondBeforeElevenCount := 0
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for _, stock := range stocks {
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// previousTwoTradeDate 未涨停、previousTradeDate 涨停、tradeDate 涨停时，认为是首板进二板。
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if stock.IsFirstToSecondBoard {
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stock.HighlightLabel = "首板进二板"
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firstToSecondBoardCount++
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}
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isOpenLower := previousTradeDate != "" && stock.HasOpen && stock.HasPreviousClose && stock.Open < stock.PreviousClose
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if isOpenLower && stock.IsFirstToSecondBoard && isBeforeEleven(stock.AkFirstLimitTime) {
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// 首板进二板且 11 点前封板的低开股，前端会用更强提示标签展示。
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stock.IsFirstSecondBeforeEleven = true
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stock.HighlightLabel = "首二一一"
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firstSecondBeforeElevenCount++
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}
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if isOpenLower {
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openLowerStocks = append(openLowerStocks, stock)
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continue
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}
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otherStocks = append(otherStocks, stock)
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}
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resp.Summary = model.LimitOpenCompareSummary{
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LimitCount: len(stocks),
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OpenLowerPreviousCloseCount: len(openLowerStocks),
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OthersCount: len(otherStocks),
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FirstToSecondBoardCount: firstToSecondBoardCount,
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FirstSecondBeforeElevenCount: firstSecondBeforeElevenCount,
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}
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resp.Groups = buildLimitOpenCompareGroups(openLowerStocks, otherStocks)
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return resp, nil
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}
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// isBeforeEleven 判断涨停时间是否早于 11:00。
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//
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// 兼容 HH:MM:SS、930、0930、93000、093000 等时间格式。
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func isBeforeEleven(limitTime *string) bool {
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if limitTime == nil || *limitTime == "" {
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return false
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}
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timeText := strings.TrimSpace(*limitTime)
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hour := 0
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minute := 0
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second := 0
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if strings.Contains(timeText, ":") {
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if n, _ := fmt.Sscanf(timeText, "%d:%d:%d", &hour, &minute, &second); n < 2 {
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return false
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}
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} else {
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if len(timeText) < 4 {
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return false
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}
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switch len(timeText) {
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case 4:
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timeText += "00"
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case 5:
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timeText = "0" + timeText
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case 6:
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default:
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return false
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}
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var err error
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hour, err = strconv.Atoi(timeText[0:2])
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if err != nil {
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return false
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}
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minute, err = strconv.Atoi(timeText[2:4])
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if err != nil {
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return false
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}
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second, err = strconv.Atoi(timeText[4:6])
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if err != nil {
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return false
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}
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}
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if hour < 0 || hour > 23 || minute < 0 || minute > 59 || second < 0 || second > 59 {
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return false
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}
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return hour < 11
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}
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// loadLimitOpenCompareStocks 查询昨日涨停且今日继续涨停的股票，并带出今日开盘和昨日收盘。
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func (s *LimitBoardService) loadLimitOpenCompareStocks(tradeDate, previousTradeDate, previousTwoTradeDate string) ([]model.LimitOpenCompareStock, error) {
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var stocks []model.LimitOpenCompareStock
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query := `SELECT
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l.symbol,
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l.ts_code,
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l.name,
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COALESCE(l.market, '') AS market,
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DATE_FORMAT(l.trade_date, '%Y-%m-%d') AS trade_date,
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d.open IS NOT NULL AS has_open,
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COALESCE(d.open, 0) AS open,
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COALESCE(l.calc_close, l.tushare_close, d.close, 0) AS close,
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? AS previous_trade_date,
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? AS previous_two_trade_date,
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pd.close IS NOT NULL AS has_previous_close,
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COALESCE(pd.close, 0) AS previous_close,
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(? <> '' AND NOT EXISTS (
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SELECT 1
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FROM stock_limit_combined_data ppl
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WHERE ppl.ts_code = l.ts_code AND ppl.trade_date = ? AND ppl.final_status = 1
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)) AS is_first_to_second_board,
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COALESCE(l.calc_limit_price, 0) AS limit_price,
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COALESCE(l.tushare_pct_chg, d.pct_chg, 0) AS pct_chg,
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l.tushare_amount AS ak_amount,
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l.tushare_float_mv AS ak_float_market_value,
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l.tushare_total_mv AS ak_total_market_value,
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l.tushare_turnover_ratio AS ak_turnover_rate,
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l.tushare_fd_amount AS ak_seal_amount,
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l.tushare_first_time AS ak_first_limit_time,
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l.tushare_last_time AS ak_last_limit_time,
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l.tushare_open_times AS ak_break_limit_count,
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l.tushare_up_stat AS ak_limit_up_stat,
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l.tushare_limit_times AS ak_limit_up_days,
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l.tushare_industry AS ak_industry,
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l.calc_vol AS vol
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FROM stock_limit_combined_data l
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LEFT JOIN stock_daily d
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ON l.ts_code = d.ts_code AND d.trade_date = l.trade_date
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LEFT JOIN stock_daily pd
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ON l.ts_code = pd.ts_code AND pd.trade_date = ?
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INNER JOIN stock_limit_combined_data pl
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ON pl.ts_code = l.ts_code AND pl.trade_date = ? AND pl.final_status = 1
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WHERE l.trade_date = ? AND l.final_status = 1
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ORDER BY d.pct_chg DESC, l.ts_code ASC`
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if previousTradeDate == "" {
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return stocks, nil
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}
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err := s.DB.Raw(query, previousTradeDate, previousTwoTradeDate, previousTwoTradeDate, previousTwoTradeDate, previousTradeDate, previousTradeDate, tradeDate).Scan(&stocks).Error
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return stocks, err
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}
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// buildLimitOpenCompareGroups 构造“开盘低于前收”和“其他涨停股”两个固定分组。
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func buildLimitOpenCompareGroups(openLowerStocks, otherStocks []model.LimitOpenCompareStock) []model.LimitOpenCompareGroup {
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if openLowerStocks == nil {
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openLowerStocks = []model.LimitOpenCompareStock{}
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}
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if otherStocks == nil {
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otherStocks = []model.LimitOpenCompareStock{}
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}
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sortLimitOpenCompareStocks(openLowerStocks)
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sortLimitOpenCompareStocks(otherStocks)
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return []model.LimitOpenCompareGroup{
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{
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Key: "open_lower_previous_close",
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Label: "开盘低于前收",
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Count: len(openLowerStocks),
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Stocks: openLowerStocks,
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},
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{
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Key: "others",
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Label: "其他涨停股",
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Count: len(otherStocks),
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Stocks: otherStocks,
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},
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}
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}
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// sortLimitOpenCompareStocks 按涨跌幅降序、股票代码升序稳定展示分组内股票。
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func sortLimitOpenCompareStocks(stocks []model.LimitOpenCompareStock) {
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sort.Slice(stocks, func(i, j int) bool {
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if stocks[i].PctChg == stocks[j].PctChg {
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return stocks[i].TsCode < stocks[j].TsCode
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}
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return stocks[i].PctChg > stocks[j].PctChg
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})
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}
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