Common types

message User {
  string id = 1;
  string email = 2;
  string display_name = 3;
  string avatar_url = 4;
  string role = 5; // "admin", "editor", "viewer"
  google.protobuf.Timestamp created_at = 6;
  google.protobuf.Timestamp updated_at = 7;
}

message PaginationRequest {
  int32 page = 1;
  int32 page_size = 2;
  string order_by = 3;   // e.g. "created_at desc"
  string filter = 4;     // free-form filter expression
}

message PaginationResponse {
  int32 total_count = 1;
  int32 page = 2;
  int32 page_size = 3;
  int32 total_pages = 4;
}

enum Channel {
  CHANNEL_UNSPECIFIED = 0;
  CHANNEL_LINKEDIN = 1;
  CHANNEL_INSTAGRAM = 2;
  CHANNEL_TIKTOK = 3;
  CHANNEL_BLOG = 4;
  CHANNEL_EMAIL = 5;
  CHANNEL_TWITTER = 6;
  CHANNEL_YOUTUBE = 7;
  CHANNEL_FACEBOOK = 8;
  CHANNEL_WHITEPAPER = 9;
  CHANNEL_BOOK_OUTLINE = 10;
  CHANNEL_WEBINAR = 11;
  CHANNEL_COURSE = 12;
  CHANNEL_PODCAST = 13;
}

enum ContentStatus {
  CONTENT_STATUS_UNSPECIFIED = 0;
  CONTENT_STATUS_DRAFT = 1;
  CONTENT_STATUS_PENDING_REVIEW = 2;
  CONTENT_STATUS_APPROVED = 3;
  CONTENT_STATUS_REJECTED = 4;
  CONTENT_STATUS_PUBLISHED = 5;
  CONTENT_STATUS_ARCHIVED = 6;
}

enum CampaignStatus {
  CAMPAIGN_STATUS_UNSPECIFIED = 0;
  CAMPAIGN_STATUS_DRAFT = 1;
  CAMPAIGN_STATUS_ACTIVE = 2;
  CAMPAIGN_STATUS_PAUSED = 3;
  CAMPAIGN_STATUS_COMPLETED = 4;
  CAMPAIGN_STATUS_ARCHIVED = 5;
}

enum TaskStatus {
  TASK_STATUS_UNSPECIFIED = 0;
  TASK_STATUS_TODO = 1;
  TASK_STATUS_IN_PROGRESS = 2;
  TASK_STATUS_DONE = 3;
  TASK_STATUS_SKIPPED = 4;
  TASK_STATUS_BLOCKED = 5;
}

enum IntegrationStatus {
  INTEGRATION_STATUS_UNSPECIFIED = 0;
  INTEGRATION_STATUS_DISCONNECTED = 1;
  INTEGRATION_STATUS_CONNECTED = 2;
  INTEGRATION_STATUS_ERROR = 3;
  INTEGRATION_STATUS_PENDING = 4;
}

message StreamChunk {
  string text = 1;
  bool is_final = 2;
  string section = 3;      // semantic section marker (e.g. "positioning", "swot", "prescription")
  float progress = 4;      // 0.0 - 1.0
  map<string, string> metadata = 5;
  repeated string agent_tasks = 6;
}

message DateRange {
  google.protobuf.Timestamp start = 1;
  google.protobuf.Timestamp end = 2;
}

message KeyValue {
  string key = 1;
  string value = 2;
}

message MetricPoint {
  google.protobuf.Timestamp timestamp = 1;
  double value = 2;
  string label = 3;
}