// =============================================================================
// MPC Party Service - Prisma Schema
// =============================================================================

generator client {
  provider = "prisma-client-js"
}

datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

// =============================================================================
// Party Shares Table
// =============================================================================
model PartyShare {
  id          String    @id @db.VarChar(255)
  partyId     String    @map("party_id") @db.VarChar(255)
  sessionId   String    @map("session_id") @db.VarChar(255)
  shareType   String    @map("share_type") @db.VarChar(20)
  shareData   String    @map("share_data") @db.Text
  publicKey   String    @map("public_key") @db.Text
  thresholdN  Int       @map("threshold_n")
  thresholdT  Int       @map("threshold_t")
  status      String    @default("active") @db.VarChar(20)
  createdAt   DateTime  @default(now()) @map("created_at")
  updatedAt   DateTime  @updatedAt @map("updated_at")
  lastUsedAt  DateTime? @map("last_used_at")

  @@unique([partyId, sessionId], name: "uk_party_session")
  @@index([partyId], name: "idx_ps_party_id")
  @@index([sessionId], name: "idx_ps_session_id")
  @@index([status], name: "idx_ps_status")
  @@map("party_shares")
}

// =============================================================================
// Session States Table
// =============================================================================
model SessionState {
  id           String    @id @db.VarChar(255)
  sessionId    String    @map("session_id") @db.VarChar(255)
  partyId      String    @map("party_id") @db.VarChar(255)
  partyIndex   Int       @map("party_index")
  sessionType  String    @map("session_type") @db.VarChar(20)
  participants String    @db.Text // JSON array
  thresholdN   Int       @map("threshold_n")
  thresholdT   Int       @map("threshold_t")
  status       String    @db.VarChar(20)
  currentRound Int       @default(0) @map("current_round")
  errorMessage String?   @map("error_message") @db.Text
  publicKey    String?   @map("public_key") @db.Text
  messageHash  String?   @map("message_hash") @db.VarChar(66)
  signature    String?   @db.Text
  startedAt    DateTime  @default(now()) @map("started_at")
  completedAt  DateTime? @map("completed_at")

  @@unique([sessionId, partyId], name: "uk_session_party")
  @@index([sessionId], name: "idx_ss_session_id")
  @@index([partyId], name: "idx_ss_party_id")
  @@index([status], name: "idx_ss_status")
  @@map("session_states")
}

// =============================================================================
// Share Backups Table (for disaster recovery)
// =============================================================================
model ShareBackup {
  id         String   @id @db.VarChar(255)
  shareId    String   @map("share_id") @db.VarChar(255)
  backupData String   @map("backup_data") @db.Text
  backupType String   @map("backup_type") @db.VarChar(20)
  createdAt  DateTime @default(now()) @map("created_at")
  createdBy  String?  @map("created_by") @db.VarChar(255)

  @@index([shareId], name: "idx_share_id")
  @@index([createdAt], name: "idx_created_at")
  @@map("share_backups")
}