[feat] 룰랫 기능 추가

[Junseung-Ock]

Summary by CodeRabbit

• New Features

  • Added roulette-based chore assignment, selecting responsible members according to weighted probabilities.
  • Added APIs to view roulette slices and weekly assignment results.
  • Added support for manual or roulette assignment when creating chores.
  • Added clear error handling for unavailable groups, missing members, and repeated draws.

• Documentation

  • Added dedicated roulette endpoints to the API documentation.

[coderabbitai]

Caution

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: 8d3f290e-91e4-4bd9-81d9-6de26e1e5a92

📥 Commits

Reviewing files that changed from the base of the PR and between 9f233d2 and 9ba3a52.

📒 Files selected for processing (15)

• src/main/java/com/cotato/cokerthon/CokerthonApplication.java
• src/main/java/com/cotato/cokerthon/domain/chore/entity/Chore.java
• src/main/java/com/cotato/cokerthon/domain/chore/repository/ChoreRepository.java
• src/main/java/com/cotato/cokerthon/domain/chore/service/GroupChoreService.java
• src/main/java/com/cotato/cokerthon/domain/group/repository/GroupMemberRepository.java
• src/main/java/com/cotato/cokerthon/domain/roulette/controller/RouletteController.java
• src/main/java/com/cotato/cokerthon/domain/roulette/dto/response/RouletteResultResponse.java
• src/main/java/com/cotato/cokerthon/domain/roulette/dto/response/RouletteSliceResponse.java
• src/main/java/com/cotato/cokerthon/domain/roulette/entity/RouletteResult.java
• src/main/java/com/cotato/cokerthon/domain/roulette/exception/RouletteErrorCode.java
• src/main/java/com/cotato/cokerthon/domain/roulette/repository/RouletteResultRepository.java
• src/main/java/com/cotato/cokerthon/domain/roulette/service/RouletteService.java
• src/main/java/com/cotato/cokerthon/global/config/SwaggerConfig.java
• src/main/java/com/cotato/cokerthon/global/entity/BaseEntity.java
• src/main/resources/application.yml

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📝 Walkthrough

Walkthrough

Adds weighted roulette assignment for group chores, persists roulette results, exposes slice/result endpoints, and integrates roulette selection into chore creation. It also updates Swagger grouping, datasource defaults, and minor formatting.

Changes

Roulette assignment

Layer / File(s)	Summary
Assignment state and repository contracts src/main/java/com/cotato/cokerthon/domain/chore/entity/Chore.java, src/main/java/com/cotato/cokerthon/domain/chore/repository/ChoreRepository.java, src/main/java/com/cotato/cokerthon/domain/group/repository/GroupMemberRepository.java	Chore stores assignment type and assigned member data; repositories expose assignment-type and group-member queries.
Roulette selection and result persistence src/main/java/com/cotato/cokerthon/domain/roulette/entity/RouletteResult.java, src/main/java/com/cotato/cokerthon/domain/roulette/repository/RouletteResultRepository.java, src/main/java/com/cotato/cokerthon/domain/roulette/service/RouletteService.java, src/main/java/com/cotato/cokerthon/domain/roulette/exception/RouletteErrorCode.java	Roulette calculates inverse-point probabilities, selects a member, stores results, retrieves historical results, and validates missing groups or members.
Roulette response API src/main/java/com/cotato/cokerthon/domain/roulette/controller/RouletteController.java, src/main/java/com/cotato/cokerthon/domain/roulette/dto/response/*	Adds slice and date-filtered result endpoints with response records.
Chore creation and application wiring src/main/java/com/cotato/cokerthon/domain/chore/service/GroupChoreService.java, src/main/java/com/cotato/cokerthon/global/config/SwaggerConfig.java, src/main/resources/application.yml, src/main/java/com/cotato/cokerthon/CokerthonApplication.java, src/main/java/com/cotato/cokerthon/global/entity/BaseEntity.java	Chore creation invokes roulette for roulette assignments; Swagger and datasource settings are updated, alongside formatting-only edits.

Estimated code review effort: 4 (Complex) | ~45 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Client
  participant RouletteController
  participant RouletteService
  participant GroupMemberRepository
  participant RouletteResultRepository
  Client->>RouletteController: Request roulette slices or results
  RouletteController->>RouletteService: getSlices(groupId) or getResults(groupId, nextWeekStartDate)
  RouletteService->>GroupMemberRepository: findByGroup(group)
  GroupMemberRepository-->>RouletteService: group members
  RouletteService->>RouletteResultRepository: Query persisted results
  RouletteResultRepository-->>RouletteService: roulette results
  RouletteService-->>RouletteController: Response DTO list
  RouletteController-->>Client: CommonResponse

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/roulette

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