[BE] 26.08 이동 평균선 계산 로직 추가 (#183)

BE/src/ranking/ranking.service.ts

@@ -98,7 +98,7 @@ export class RankingService {
 
     return {
       topRank: parsedTopRank,
-      userRank: userRank,
+      userRank,
     };
   }
 

BE/src/stock/detail/dto/stock-detail-chart-data.dto.ts

@@ -21,4 +21,10 @@ export class InquirePriceChartDataDto {
 
   @ApiProperty({ description: '전일 대비 부호' })
   prdy_vrss_sign: string;
+
+  @ApiProperty({ description: '이동 평균선 데이터(5일)' })
+  mov_avg_5: string;
+
+  @ApiProperty({ description: '이동 평균선 데이터(20일)' })
+  mov_avg_20: string;
 }

BE/src/stock/detail/stock-detail.service.ts

@@ -82,11 +82,25 @@ export class StockDetailService {
     date2: string,
     periodDivCode: string,
   ) {
+    let newDate1 = date1;
+    let newDate2 = date2;
+
+    if (date1 === '') {
+      const today = new Date();
+      const prevDay = new Date();
+      if (periodDivCode === 'D') prevDay.setDate(today.getDate() - 60);
+      if (periodDivCode === 'M') prevDay.setDate(today.getDate() - 1200);
+      if (periodDivCode === 'Y') prevDay.setDate(today.getDate() - 20000);
+      prevDay.setDate(today.getDate() - 365);
+      newDate2 = new Date().toISOString().slice(0, 10).replace(/-/g, '');
+      newDate1 = prevDay.toISOString().slice(0, 10).replace(/-/g, '');
+    }
+
     const queryParams = {
       fid_cond_mrkt_div_code: 'J',
       fid_input_iscd: stockCode,
-      fid_input_date_1: date1,
-      fid_input_date_2: date2,
+      fid_input_date_1: newDate1,
+      fid_input_date_2: newDate2,
       fid_period_div_code: periodDivCode,
       fid_org_adj_prc: '0',
     };
@@ -98,7 +112,7 @@ export class StockDetailService {
         queryParams,
       );
 
-    return this.formatStockInquirePriceData(response).slice().reverse();
+    return this.formatStockInquirePriceData(response).slice(-30);
   }
 
   /**
@@ -111,7 +125,13 @@ export class StockDetailService {
   private formatStockInquirePriceData(response: InquirePriceChartApiResponse) {
     const { output2 } = response;
 
-    return output2.map((info) => {
+    output2.sort((a, b) => {
+      if (a.stck_bsop_date > b.stck_bsop_date) return 1;
+      if (a.stck_bsop_date < b.stck_bsop_date) return -1;
+      return 0;
+    });
+
+    return output2.map((info, index) => {
       const stockData = new InquirePriceChartDataDto();
       const {
         stck_bsop_date,
@@ -131,6 +151,20 @@ export class StockDetailService {
       stockData.acml_vol = acml_vol;
       stockData.prdy_vrss_sign = prdy_vrss_sign;
 
+      if (index >= 4) {
+        const movAvg5 = output2
+          .slice(index - 4, index + 1)
+          .reduce((acc, cur) => acc + Number(cur.stck_clpr), 0);
+        stockData.mov_avg_5 = (movAvg5 / 5).toFixed(2);
+      }
+
+      if (index >= 19) {
+        const movAvg20 = output2
+          .slice(index - 19, index + 1)
+          .reduce((acc, cur) => acc + Number(cur.stck_clpr), 0);
+        stockData.mov_avg_20 = (movAvg20 / 20).toFixed(2);
+      }
+
       return stockData;
     });
   }