@startuml meeting-대시보드조회
!theme mono

title Meeting Service - 대시보드조회 내부 시퀀스

participant "DashboardController" as Controller
participant "DashboardService" as Service
participant "MeetingRepository" as MeetingRepo
participant "TodoRepository" as TodoRepo
participant "MinutesRepository" as MinutesRepo
database "Redis Cache<<E>>" as Cache
database "Meeting DB<<E>>" as DB

[-> Controller: GET /dashboard
activate Controller

note over Controller
사용자 정보는 헤더에서 추출
(userId, userName, email)
end note

Controller -> Service: getDashboardData(userId)
activate Service

' 캐시 조회
Service -> Cache: GET dashboard:{userId}
activate Cache
Cache --> Service: 캐시 조회 결과
deactivate Cache

alt Cache Hit
    Service --> Service: 캐시 데이터 반환
else Cache Miss
    ' 예정된 회의 조회
    Service -> MeetingRepo: findUpcomingMeetings(userId)
    activate MeetingRepo
    MeetingRepo -> DB: SELECT meetings\nWHERE userId = ? AND status = 'SCHEDULED'\nAND startTime > NOW()\nORDER BY startTime LIMIT 3
    activate DB
    DB --> MeetingRepo: 예정된 회의 목록
    deactivate DB
    MeetingRepo --> Service: List<Meeting>
    deactivate MeetingRepo

    ' 진행 중 Todo 조회
    Service -> TodoRepo: findActiveTodos(userId)
    activate TodoRepo
    TodoRepo -> DB: SELECT todos\nWHERE assignee = ? AND status = 'IN_PROGRESS'\nORDER BY dueDate LIMIT 3
    activate DB
    DB --> TodoRepo: 진행 중 Todo 목록
    deactivate DB
    TodoRepo --> Service: List<Todo>
    deactivate TodoRepo

    ' 최근 회의록 조회
    Service -> MinutesRepo: findRecentMinutes(userId)
    activate MinutesRepo
    MinutesRepo -> DB: SELECT minutes\nWHERE creatorId = ?\nORDER BY createdAt DESC LIMIT 3
    activate DB
    DB --> MinutesRepo: 최근 회의록 목록
    deactivate DB
    MinutesRepo --> Service: List<Minutes>
    deactivate MinutesRepo

    ' 공유받은 회의록 조회
    Service -> MinutesRepo: findSharedMinutes(userId)
    activate MinutesRepo
    MinutesRepo -> DB: SELECT minutes m JOIN shared_minutes sm\nON m.id = sm.minutesId\nWHERE sm.sharedWith = ?\nORDER BY sm.sharedAt DESC LIMIT 3
    activate DB
    DB --> MinutesRepo: 공유받은 회의록 목록
    deactivate DB
    MinutesRepo --> Service: List<Minutes>
    deactivate MinutesRepo

    ' 통계 정보 조회
    Service -> MeetingRepo: countUpcomingMeetings(userId)
    activate MeetingRepo
    MeetingRepo -> DB: SELECT COUNT(*)\nFROM meetings\nWHERE userId = ? AND status = 'SCHEDULED'
    activate DB
    DB --> MeetingRepo: 예정된 회의 개수
    deactivate DB
    MeetingRepo --> Service: int count
    deactivate MeetingRepo

    Service -> TodoRepo: countActiveTodos(userId)
    activate TodoRepo
    TodoRepo -> DB: SELECT COUNT(*)\nFROM todos\nWHERE assignee = ? AND status = 'IN_PROGRESS'
    activate DB
    DB --> TodoRepo: 진행 중 Todo 개수
    deactivate DB
    TodoRepo --> Service: int count
    deactivate TodoRepo

    Service -> TodoRepo: calculateTodoCompletionRate(userId)
    activate TodoRepo
    TodoRepo -> DB: SELECT\n  (COUNT(CASE WHEN status='COMPLETED' THEN 1 END) * 100.0 /\n   COUNT(*)) as rate\nFROM todos WHERE assignee = ?
    activate DB
    DB --> TodoRepo: Todo 완료율
    deactivate DB
    TodoRepo --> Service: double rate
    deactivate TodoRepo

    note over Service
    비즈니스 로직:
    - 데이터 조합 및 정제
    - DTO 변환
    - 통계 계산
    end note

    Service -> Service: 대시보드 데이터 조합

    ' 캐시 저장
    Service -> Cache: SET dashboard:{userId}\n(TTL: 5분)
    activate Cache
    Cache --> Service: 캐시 저장 완료
    deactivate Cache
end

Service --> Controller: DashboardResponse
deactivate Service

note over Controller
응답 데이터 구조:
{
  "upcomingMeetings": [...],
  "activeTodos": [...],
  "recentMinutes": [...],
  "sharedMinutes": [...],
  "statistics": {
    "upcomingMeetingsCount": n,
    "activeTodosCount": n,
    "todoCompletionRate": n
  }
}
end note

return 200 OK\nDashboardResponse

deactivate Controller

@enduml