syntax = "proto3";

package next_edu_cloud.events.v1;

// Cross-service event contracts published by CoreEdu via the transactional
// outbox pattern and consumed by downstream services (notifications, analytics,
// audit, etc.).
//
// Topic naming follows the arbitration in coord-cross-review §3.1:
//   edu.teaching.<aggregate>.<action>
//
// Event routing (TOPIC_MAP in outbox.publisher.ts):
//   edu.exam.events       <- exam.created / exam.updated / exam.deleted
//   edu.homework.events   <- homework.assigned / homework.submitted / homework.graded
//   edu.grade.events      <- grade.recorded / grade.updated
//   edu.class.events      <- class.transferred
//   edu.content.textbook.events       <- textbook.created / textbook.updated / textbook.published / textbook.archived
//   edu.content.chapter.events        <- chapter.created / chapter.updated / chapter.deleted
//   edu.content.knowledge_point.events <- knowledge_point.created / knowledge_point.updated / knowledge_point.prerequisite_added / knowledge_point.prerequisite_removed
//   edu.content.question.events       <- question.created / question.updated / question.published / question.deleted

message ClassEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string class_id = 5;
  string name = 6;
  string action = 7;
  EventMetadata metadata = 8;
}

message ExamEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string exam_id = 5;
  string class_id = 6;
  string subject_id = 7;
  string title = 8;
  string action = 9;
  EventMetadata metadata = 10;
}

message HomeworkEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string homework_id = 5;
  string class_id = 6;
  string subject_id = 7;
  string title = 8;
  string action = 9;
  EventMetadata metadata = 10;
}

message GradeEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string grade_id = 5;
  string student_id = 6;
  string score = 7;
  string total_score = 8;
  string action = 9;
  EventMetadata metadata = 10;
}

message AttendanceEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string attendance_id = 5;
  string schedule_id = 6;
  string student_id = 7;
  string status = 8;
  EventMetadata metadata = 9;
}

// IAM 用户事件（edu.iam.user.events topic）
// action: created / updated / disabled / role_changed
message UserEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string user_id = 5;
  string email = 6;
  string name = 7;
  repeated string roles = 8;
  string data_scope = 9;
  string action = 10;
  map<string, string> metadata = 11;
}

// IAM 角色事件（edu.iam.role.events topic）
// action: created / updated / deleted
message RoleEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string role_id = 5;
  string role_name = 6;
  string action = 7;
  map<string, string> metadata = 8;
}

// IAM 审计事件（edu.iam.audit.created topic，统一审计 topic）
// action: create / update / delete / login / logout / permission_change
message AuditEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string actor_user_id = 5;
  string action = 6;
  string resource_type = 7;
  string resource_id = 8;
  string before_state = 9;
  string after_state = 10;
  string ip = 11;
  string user_agent = 12;
  string trace_id = 13;
  map<string, string> metadata = 14;
}

message TextbookEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string textbook_id = 5;
  string title = 6;
  string subject_id = 7;
  string grade_id = 8;
  string version = 9;
  string action = 10;
  map<string, string> metadata = 11;
}

message ChapterEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string chapter_id = 5;
  string textbook_id = 6;
  string title = 7;
  int32 order = 8;
  string action = 9;
  map<string, string> metadata = 10;
}

message KnowledgePointEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string kp_id = 5;
  string chapter_id = 6;
  string title = 7;
  int32 difficulty = 8;
  string action = 9;
  string prerequisite_id = 10;
  map<string, string> metadata = 11;
}

message QuestionEvent {
  string event_id = 1;
  string aggregate_id = 2;
  string event_type = 3;
  int64 occurred_at = 4;
  string question_id = 5;
  string kp_id = 6;
  string type = 7;
  int32 difficulty = 8;
  string status = 9;
  string source = 10;
  string created_by = 11;
  string action = 12;
  map<string, string> metadata = 13;
}