[FEATURE] 외주 상세 정보 조회 기능 구현

src/main/java/ditda/backend/domain/commission/category/textbook/dto/TextbookCategoryDetail.java

@@ -0,0 +1,29 @@
+package ditda.backend.domain.commission.category.textbook.dto;
+
+import java.util.List;
+
+import ditda.backend.domain.commission.category.textbook.dto.response.TextbookDetailResponse;
+import ditda.backend.domain.commission.category.textbook.entity.Textbook;
+import ditda.backend.domain.commission.category.textbook.entity.TextbookPage;
+import ditda.backend.domain.commission.core.dto.response.CategoryDetailResponse;
+import ditda.backend.domain.commission.core.handler.CategoryDetail;
+
+public record TextbookCategoryDetail(
+	Textbook textbook,
+	List<TextbookPage> pages
+) implements CategoryDetail {
+
+	@Override
+	public CategoryDetailResponse toResponse() {
+
+		return new TextbookDetailResponse(
+			textbook.getTitle(),
+			textbook.getInstructorName(),
+			textbook.getSubject(),
+			pages.stream()
+				.map(p -> new TextbookDetailResponse.RequiredPage(
+					p.getPageType(), p.getPageDescription()))
+				.toList()
+		);
+	}
+}

src/main/java/ditda/backend/domain/commission/category/textbook/dto/response/TextbookDetailResponse.java

@@ -0,0 +1,35 @@
+package ditda.backend.domain.commission.category.textbook.dto.response;
+
+import java.util.List;
+
+import ditda.backend.domain.commission.core.dto.response.CategoryDetailResponse;
+import ditda.backend.domain.commission.core.entity.enums.PageType;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(description = "교재 외지/내지 카테고리 상세")
+public record TextbookDetailResponse(
+
+	@Schema(description = "교재명", example = "수학의 정석")
+	String textbookName,
+
+	@Schema(description = "강사명", example = "홍길동")
+	String instructorName,
+
+	@Schema(description = "과목", example = "수학")
+	String subject,
+
+	@Schema(description = "필요 페이지 정보")
+	List<RequiredPage> requiredPages
+
+) implements CategoryDetailResponse {
+
+	public record RequiredPage(
+
+		@Schema(description = "페이지 종류", example = "INSTRUCTOR_PROFILE")
+		PageType pageType,
+
+		@Schema(description = "페이지 설명", example = "프로필은 깔끔하게")
+		String description
+	) {
+	}
+}

src/main/java/ditda/backend/domain/commission/category/textbook/handler/TextbookCategoryHandler.java

@@ -4,6 +4,7 @@
 
 import org.springframework.stereotype.Component;
 
+import ditda.backend.domain.commission.category.textbook.dto.TextbookCategoryDetail;
 import ditda.backend.domain.commission.category.textbook.entity.Textbook;
 import ditda.backend.domain.commission.category.textbook.entity.TextbookPage;
 import ditda.backend.domain.commission.category.textbook.repository.TextbookPageRepository;
@@ -13,6 +14,7 @@
 import ditda.backend.domain.commission.core.entity.Commission;
 import ditda.backend.domain.commission.core.entity.enums.CategoryType;
 import ditda.backend.domain.commission.core.exception.CommissionErrorCode;
+import ditda.backend.domain.commission.core.handler.CategoryDetail;
 import ditda.backend.domain.commission.core.handler.CommissionCategoryHandler;
 import ditda.backend.global.apipayload.exception.GeneralException;
 import lombok.RequiredArgsConstructor;
@@ -67,4 +69,15 @@ public void saveDetail(Commission commission, CommissionCreateRequest request) {
 			.toList();
 		textbookPageRepository.saveAll(pages);
 	}
+
+	@Override
+	public CategoryDetail loadDetail(Long commissionId) {
+
+		Textbook textbook = textbookRepository.findById(commissionId)
+			.orElseThrow(() -> new IllegalStateException("Textbook not found for commissionId=" + commissionId));
+
+		List<TextbookPage> pages = textbookPageRepository.findByCommissionId(commissionId);
+
+		return new TextbookCategoryDetail(textbook, pages);
+	}
 }

src/main/java/ditda/backend/domain/commission/category/textbook/repository/TextbookPageRepository.java

@@ -1,8 +1,12 @@
 package ditda.backend.domain.commission.category.textbook.repository;
 
+import java.util.List;
+
 import org.springframework.data.jpa.repository.JpaRepository;
 
 import ditda.backend.domain.commission.category.textbook.entity.TextbookPage;
 
 public interface TextbookPageRepository extends JpaRepository<TextbookPage, Long> {
+
+	List<TextbookPage> findByCommissionId(Long commissionId);
 }

src/main/java/ditda/backend/domain/commission/core/controller/CommissionController.java

@@ -0,0 +1,35 @@
+package ditda.backend.domain.commission.core.controller;
+
+import org.springframework.security.core.annotation.AuthenticationPrincipal;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import ditda.backend.domain.commission.core.dto.response.CommissionDetailResponse;
+import ditda.backend.domain.commission.core.facade.CommissionFacade;
+import ditda.backend.global.apipayload.response.ApiResponse;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import lombok.RequiredArgsConstructor;
+
+@RestController
+@RequestMapping("/api/v1/commissions")
+@RequiredArgsConstructor
+@Tag(name = "Commission", description = "외주 상세 조회 API")
+public class CommissionController {
+
+	private final CommissionFacade commissionFacade;
+
+	@Operation(summary = "외주 상세 조회", description = "**[외주 조회]** 외주 상세 정보를 조회합니다.")
+	@GetMapping("/{commissionId}")
+	public ApiResponse<CommissionDetailResponse> getCommissionDetail(
+		@AuthenticationPrincipal Long userId,
+		@PathVariable Long commissionId
+	) {
+
+		CommissionDetailResponse response = commissionFacade.getCommissionDetail(userId, commissionId);
+
+		return ApiResponse.onSuccess("외주 상세 조회 성공", response);
+	}
+}

src/main/java/ditda/backend/domain/commission/core/dto/CommissionDetail.java

@@ -0,0 +1,19 @@
+package ditda.backend.domain.commission.core.dto;
+
+import java.util.List;
+
+import ditda.backend.domain.commission.core.entity.Commission;
+import ditda.backend.domain.commission.core.entity.CommissionColor;
+import ditda.backend.domain.commission.core.entity.CommissionConcept;
+import ditda.backend.domain.commission.core.entity.CommissionFile;
+import ditda.backend.domain.commission.core.handler.CategoryDetail;
+
+public record CommissionDetail(
+	Commission commission,
+	List<CommissionConcept> concepts,
+	List<CommissionColor> colors,
+	List<CommissionFile> files,
+	CategoryDetail categoryDetail
+) {
+
+}

src/main/java/ditda/backend/domain/commission/core/dto/PriceInfo.java → src/main/java/ditda/backend/domain/commission/core/dto/PriceDetail.java

@@ -1,6 +1,7 @@
 package ditda.backend.domain.commission.core.dto;
 
-public record PriceInfo(
+public record PriceDetail(
+
 	int baseAmount,
 	int maxAmount
 ) {

src/main/java/ditda/backend/domain/commission/core/dto/response/CategoryDetailResponse.java

@@ -0,0 +1,11 @@
+package ditda.backend.domain.commission.core.dto.response;
+
+import ditda.backend.domain.commission.category.textbook.dto.response.TextbookDetailResponse;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(
+	description = "카테고리별 상세 정보",
+	oneOf = {TextbookDetailResponse.class}        // 카테고리 추가시 여기에 추가
+)
+public interface CategoryDetailResponse {
+}

src/main/java/ditda/backend/domain/commission/core/dto/response/CommissionDetailResponse.java

@@ -0,0 +1,114 @@
+package ditda.backend.domain.commission.core.dto.response;
+
+import java.time.LocalDate;
+import java.util.List;
+
+import ditda.backend.domain.commission.core.entity.enums.CategoryType;
+import ditda.backend.domain.commission.core.entity.enums.ColorRole;
+import ditda.backend.domain.commission.core.entity.enums.ColorSelectionMode;
+import ditda.backend.domain.commission.core.entity.enums.CommissionStatus;
+import ditda.backend.domain.commission.core.entity.enums.ConceptTag;
+import ditda.backend.domain.commission.core.entity.enums.FileKind;
+import ditda.backend.domain.commission.core.entity.enums.PageSize;
+import io.swagger.v3.oas.annotations.media.Schema;
+
+@Schema(description = "외주 상세 정보 응답")
+public record CommissionDetailResponse(
+
+	@Schema(description = "외주 ID", example = "1")
+	Long commissionId,
+
+	@Schema(description = "제목", example = "수학의 정석 - 수학")
+	String title,
+
+	@Schema(description = "카테고리", example = "FLYER_TEXTBOOK_COVER_INNER")
+	CategoryType category,
+
+	@Schema(description = "상태", example = "PENDING")
+	CommissionStatus status,
+
+	@Schema(description = "디자인 정보")
+	DesignInfo designInfo,
+
+	@Schema(description = "카테고리별 상세 정보")
+	CategoryDetailResponse categoryDetail,
+
+	@Schema(description = "첨부 파일 목록")
+	List<FileInfo> files,
+
+	@Schema(description = "마감일 정보")
+	DateInfo dateInfo,
+
+	@Schema(description = "가격 정보")
+	PriceInfo priceInfo
+) {
+	@Schema(description = "디자인 정보")
+	public record DesignInfo(
+
+		@Schema(description = "사이즈", example = "A4")
+		PageSize pageSize,
+
+		@Schema(description = "컨셉 정보")
+		List<ConceptTag> concepts,
+
+		@Schema(description = "추가 컨셉 설명", example = "초등 저학년 대상이라 너무 무겁지 않게")
+		String additionalConcept,
+
+		@Schema(description = "색상 선택 모드", example = "USER_SELECTED")
+		ColorSelectionMode colorSelectionMode,
+
+		@Schema(description = "색상 정보")
+		List<ColorInfo> colors
+	) {
+
+		@Schema(description = "색상 정보")
+		public record ColorInfo(
+
+			@Schema(description = "색상 역할", example = "MAIN")
+			ColorRole role,
+
+			@Schema(description = "색상 코드(#RRGGBB)", example = "#194D33")
+			String colorCode
+		) {
+		}
+	}
+
+	@Schema(description = "첨부 파일 정보")
+	public record FileInfo(
+
+		@Schema(description = "파일 종류", example = "MATERIAL")
+		FileKind fileKind,
+
+		@Schema(description = "첨부 파일 URL", example = "https://example.com/commission/file.pdf")
+		List<String> fileUrls,
+
+		@Schema(description = "파일 설명", example = "img.04는 강사 프로필 이미지")
+		String description
+	) {
+	}
+
+	@Schema(description = "마감일 정보")
+	public record DateInfo(
+
+		@Schema(description = "지원 마감일", example = "2026-06-08")
+		LocalDate applicationDeadline,
+
+		@Schema(description = "1차 시안 마감일", example = "2026-06-15")
+		LocalDate firstDraftDeadline,
+
+		@Schema(description = "최종 마감일", example = "2026-06-23")
+		LocalDate finalDeadline
+	) {
+	}
+
+	@Schema(description = "가격 정보")
+	public record PriceInfo(
+
+		@Schema(description = "기본금", example = "60000")
+		int baseAmount,
+
+		@Schema(description = "최대 수령액", example = "210000")
+		int maxAmount
+	) {
+	}
+}

src/main/java/ditda/backend/domain/commission/core/dto/response/CommissionListResponse.java

@@ -6,7 +6,7 @@
 
 import org.springframework.data.domain.Page;
 
-import ditda.backend.domain.commission.core.dto.PriceInfo;
+import ditda.backend.domain.commission.core.dto.PriceDetail;
 import ditda.backend.domain.commission.core.entity.Commission;
 import ditda.backend.domain.commission.core.entity.enums.CategoryType;
 import io.swagger.v3.oas.annotations.media.Schema;
@@ -30,9 +30,9 @@ public record CommissionListResponse(
 	int totalPages
 ) {
 
-	public static CommissionListResponse from(Page<Commission> page, Map<Long, PriceInfo> priceInfos) {
+	public static CommissionListResponse from(Page<Commission> page, Map<Long, PriceDetail> priceDetails) {
 		List<CommissionResponse> items = page.getContent().stream()
-			.map(c -> CommissionResponse.from(c, priceInfos.get(c.getId())))
+			.map(c -> CommissionResponse.from(c, priceDetails.get(c.getId())))
 			.toList();
 
 		return new CommissionListResponse(
@@ -66,14 +66,14 @@ public record CommissionResponse(
 		int maxAmount
 	) {
 
-		private static CommissionResponse from(Commission commission, PriceInfo priceInfo) {
+		private static CommissionResponse from(Commission commission, PriceDetail priceDetail) {
 			return new CommissionResponse(
 				commission.getId(),
 				commission.getApplicationDeadline(),
 				commission.getCategoryType(),
 				commission.getTitle(),
-				priceInfo.baseAmount(),
-				priceInfo.maxAmount()
+				priceDetail.baseAmount(),
+				priceDetail.maxAmount()
 			);
 		}
 	}