From 497574b618e6b4a526107bfcbfa71acf825ea896 Mon Sep 17 00:00:00 2001
From: Piotr Dec <piotr_dec@msn.com>
Date: Thu, 23 May 2024 21:10:18 +0200
Subject: [PATCH] feat: NbpService#getFetchDate implementation

---
 src/main/java/eu/ztsh/wymiana/service/NbpService.java | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/main/java/eu/ztsh/wymiana/service/NbpService.java b/src/main/java/eu/ztsh/wymiana/service/NbpService.java
index 159ca0e..1871f54 100644
--- a/src/main/java/eu/ztsh/wymiana/service/NbpService.java
+++ b/src/main/java/eu/ztsh/wymiana/service/NbpService.java
@@ -6,7 +6,9 @@ import org.assertj.core.util.VisibleForTesting;
 import org.springframework.stereotype.Service;
 
 import java.time.Clock;
+import java.time.DayOfWeek;
 import java.time.LocalDate;
+import java.time.temporal.TemporalAdjusters;
 
 /**
  * NBP exchange rates service
@@ -34,7 +36,8 @@ public class NbpService {
      */
     @VisibleForTesting
     LocalDate getFetchDate() {
-        throw new UnsupportedOperationException("Not implemented yet");
+        var today = LocalDate.now(clock);
+        return isWeekend(today) ? today.with(TemporalAdjusters.previous(DayOfWeek.FRIDAY)) : today;
     }
 
     @VisibleForTesting
@@ -42,6 +45,10 @@ public class NbpService {
         throw new UnsupportedOperationException("Not implemented yet");
     }
 
+    private static boolean isWeekend(LocalDate today) {
+        return today.getDayOfWeek() == DayOfWeek.SATURDAY
+            || today.getDayOfWeek() == DayOfWeek.SUNDAY;
+    }
     private record RatesCache(LocalDate date, double buy, double sell) {
 
     }