Implements Hunt basic create and get, and adds field validation to controllers

src/main/kotlin/net/halfbinary/scavengerhuntapi/repository/HuntRepository.kt

@@ -1,9 +1,49 @@
 package net.halfbinary.scavengerhuntapi.repository
 
 import net.halfbinary.scavengerhuntapi.model.HuntId
+import net.halfbinary.scavengerhuntapi.model.HunterId
 import net.halfbinary.scavengerhuntapi.model.record.HuntRecord
 import org.springframework.data.jpa.repository.JpaRepository
+import org.springframework.data.jpa.repository.Query
 import org.springframework.stereotype.Repository
 
 @Repository
-interface HuntRepository : JpaRepository<HuntRecord, HuntId>
+interface HuntRepository : JpaRepository<HuntRecord, HuntId> {
+    @Query("""
+        SELECT h.*
+            FROM hunter u
+                 INNER JOIN hunter_team ht ON u.id = ht.hunter_id
+                 INNER JOIN team t ON ht.team_id = t.id
+                 INNER JOIN team_hunt th ON t.id = th.team_id
+                 INNER JOIN hunt h ON th.hunt_id = h.id
+            WHERE u.id = :hunterId
+              AND h.is_terminated = FALSE
+              AND h.start_date_time < NOW()
+              AND h.end_date_time > NOW()
+    """, nativeQuery = true)
+    fun findAllOngoingByHunter(hunterId: HunterId): List<HuntRecord>
+
+    @Query("""
+                SELECT h.*
+            FROM hunt h
+            WHERE h.is_terminated = FALSE
+              AND h.start_date_time < NOW()
+              AND h.end_date_time > NOW()
+    """, nativeQuery = true)
+    fun findAllOngoing(): List<HuntRecord>
+
+    @Query("""
+                SELECT h.*
+            FROM hunt h
+            WHERE h.is_terminated = FALSE
+              AND h.start_date_time > NOW()
+    """, nativeQuery = true)
+    fun findAllUnstarted(): List<HuntRecord>
+
+    @Query("""
+                SELECT h.*
+            FROM hunt h
+            WHERE h.is_terminated = TRUE
+    """, nativeQuery = true)
+    fun findAllClosed(): List<HuntRecord>
+}