refactor: update service implementations and exception handling

Author: DeveloperWilliams

src/main/java/com/countyhospital/healthapi/common/exception/BusinessException.java

@@ -0,0 +1,16 @@
+package com.countyhospital.healthapi.common.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(HttpStatus.BAD_REQUEST)
+public class BusinessException extends RuntimeException {
+    
+    public BusinessException(String message) {
+        super(message);
+    }
+    
+    public BusinessException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

src/main/java/com/countyhospital/healthapi/common/exception/ResourceNotFoundException.java

@@ -0,0 +1,16 @@
+package com.countyhospital.healthapi.common.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(HttpStatus.NOT_FOUND)
+public class ResourceNotFoundException extends RuntimeException {
+    
+    public ResourceNotFoundException(String message) {
+        super(message);
+    }
+    
+    public ResourceNotFoundException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

src/main/java/com/countyhospital/healthapi/common/exception/ValidationException.java

@@ -0,0 +1,16 @@
+package com.countyhospital.healthapi.common.exception;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.web.bind.annotation.ResponseStatus;
+
+@ResponseStatus(HttpStatus.BAD_REQUEST)
+public class ValidationException extends RuntimeException {
+    
+    public ValidationException(String message) {
+        super(message);
+    }
+    
+    public ValidationException(String message, Throwable cause) {
+        super(message, cause);
+    }
+}

src/main/java/com/countyhospital/healthapi/encounter/service/EncounterService.java

@@ -0,0 +1,38 @@
+package com.countyhospital.healthapi.encounter.service;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
+import com.countyhospital.healthapi.encounter.domain.Encounter;
+
+public interface EncounterService {
+    
+    Encounter createEncounter(Encounter encounter);
+    
+    Encounter getEncounterById(Long id);
+    
+    List<Encounter> getEncountersByPatientId(Long patientId);
+    
+    Page<Encounter> getEncountersByPatientId(Long patientId, Pageable pageable);
+    
+    List<Encounter> getAllEncounters();
+    
+    Page<Encounter> getAllEncounters(Pageable pageable);
+    
+    List<Encounter> getEncountersByDateRange(LocalDateTime start, LocalDateTime end);
+    
+    List<Encounter> getEncountersByPatientIdAndDateRange(Long patientId, LocalDateTime start, LocalDateTime end);
+    
+    List<Encounter> getEncountersByClass(String encounterClass);
+    
+    Encounter updateEncounter(Long id, Encounter encounterDetails);
+    
+    void deleteEncounter(Long id);
+    
+    boolean encounterExists(Long id);
+    
+    long getEncounterCountByPatientId(Long patientId);
+}