Saved necessary data from an external DB and implemented two methods …

…in controller.

src/main/java/mate/academy/rickandmorty/config/MapperConfig.java

@@ -0,0 +1,13 @@
+package mate.academy.rickandmorty.controller.config;
+
+import org.mapstruct.InjectionStrategy;
+import org.mapstruct.NullValueCheckStrategy;
+
+@org.mapstruct.MapperConfig(
+        componentModel = "spring",
+        injectionStrategy = InjectionStrategy.CONSTRUCTOR,
+        nullValueCheckStrategy = NullValueCheckStrategy.ALWAYS,
+        implementationPackage = "<PACKAGE_NAME>.impl"
+)
+public class MapperConfig {
+}

src/main/java/mate/academy/rickandmorty/controller/RickAndMortyController.java

@@ -0,0 +1,2 @@
+package mate.academy.rickandmorty.controller;public class RickAndMortyController {
+}

src/main/java/mate/academy/rickandmorty/dto/external/CharacterResponseDataDto.java

@@ -0,0 +1,5 @@
+package mate.academy.rickandmorty.dto.external;
+
+public class CharacterResponseDto {
+
+}

src/main/java/mate/academy/rickandmorty/dto/external/RickAndMortyCharacterDto.java

@@ -0,0 +1,11 @@
+package mate.academy.rickandmorty.dto.external;
+
+import lombok.Data;
+
+@Data
+public class RickAndMortyCharacter {
+    private Long id;
+    private String name;
+    private String status;
+    private String gender;
+}

src/main/java/mate/academy/rickandmorty/dto/internal/RickAndMortyCharacter.java

@@ -0,0 +1,22 @@
+package mate.academy.rickandmorty.model;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+import lombok.Data;
+
+@Data
+@Entity
+@Table(name = "rick_and_morty_characters")
+public class RickAndMortyCharacter {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+    private Long externalId;
+    private String name;
+    private String status;
+    private String gender;
+
+}

src/main/java/mate/academy/rickandmorty/mapper/CharacterMapper.java

@@ -0,0 +1,14 @@
+package mate.academy.rickandmorty.controller.mapper;
+
+import mate.academy.rickandmorty.controller.config.MapperConfig;
+import mate.academy.rickandmorty.dto.external.RickAndMortyCharacterDto;
+import mate.academy.rickandmorty.model.RickAndMortyCharacter;
+import org.mapstruct.Mapper;
+import org.mapstruct.Mapping;
+
+@Mapper(config = MapperConfig.class)
+public interface CharacterMapper {
+    @Mapping(target = "id", ignore = true)
+    @Mapping(target = "externalId", source = "id")
+    RickAndMortyCharacter toModel(RickAndMortyCharacterDto characterDto);
+}

src/main/java/mate/academy/rickandmorty/repository/character/RickAndMortyCharacterRepository.java

@@ -0,0 +1,10 @@
+package mate.academy.rickandmorty.repository;
+
+import mate.academy.rickandmorty.model.RickAndMortyCharacter;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.JpaSpecificationExecutor;
+
+public interface RickAndMortyCharacterRepository
+        extends JpaRepository<RickAndMortyCharacter, Long>,
+        JpaSpecificationExecutor<RickAndMortyCharacter> {
+}

src/main/java/mate/academy/rickandmorty/service/RickAndMortyClient.java

@@ -0,0 +1,2 @@
+package mate.academy.rickandmorty.service;public class RickAndMortyClient {
+}

src/main/java/mate/academy/rickandmorty/service/character/RickAndMortyCharacterService.java

@@ -0,0 +1,7 @@
+package mate.academy.rickandmorty.service.rickandmortcharacter;
+
+import mate.academy.rickandmorty.model.RickAndMortyCharacter;
+
+public interface RickAndMortyCharacterService {
+    RickAndMortyCharacter getRandomCharacter();
+}

src/main/java/mate/academy/rickandmorty/service/character/RickAndMortyCharacterServiceImpl.java

@@ -0,0 +1,37 @@
+package mate.academy.rickandmorty.service.rickandmortcharacter;
+
+import jakarta.annotation.PostConstruct;
+import lombok.RequiredArgsConstructor;
+import mate.academy.rickandmorty.controller.mapper.CharacterMapper;
+import mate.academy.rickandmorty.dto.external.RickAndMortyCharacterDto;
+import mate.academy.rickandmorty.model.RickAndMortyCharacter;
+import mate.academy.rickandmorty.repository.RickAndMortyCharacterRepository;
+import mate.academy.rickandmorty.service.RickAndMortyClient;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+import java.util.Random;
+
+@RequiredArgsConstructor
+@Service
+public class RickAndMortyCharacterServiceImpl implements RickAndMortyCharacterService {
+    private final RickAndMortyClient client;
+    private final RickAndMortyCharacterRepository repository;
+    private final CharacterMapper characterMapper;
+
+    @PostConstruct
+    public void saveAllCharacters() {
+        List<RickAndMortyCharacter> list =
+                client.getAllCharacter()
+                        .stream()
+                        .map(characterMapper::toModel)
+                        .toList();
+        repository.saveAll(list);
+    }
+
+    @Override
+    public RickAndMortyCharacter getRandomCharacter() {
+        List<RickAndMortyCharacter> all = repository.findAll();
+        return all.get(new Random().nextInt(all.size()));
+    }
+}