generator client {
  provider = "cargo prisma"
  output   = "../src/prisma.rs"
}

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

model Node {
  id         String           @id @default(uuid())
  label      String?
  implements NodeImplements[]

  fromNodes Edge[] @relation(name: "fromNode")
  toNodes   Edge[] @relation(name: "toNode")

  metadata NodeMeta[]
}

model Interface {
  id           String           @id @default(uuid())
  implementors NodeImplements[]
}

model Edge {
  id    String  @id @default(uuid())
  label String?

  /// The app that created this edge
  app   App    @relation(fields: [appId], references: [id])
  appId String

  appKey String

  fromId   String
  fromNode Node   @relation(name: "fromNode", fields: [fromId], references: [id])

  toId   String
  toNode Node   @relation(name: "toNode", fields: [toId], references: [id])

  directional Boolean

  @@unique([fromId, toId])
  @@index([appId, appKey])
}

model NodeMeta {
  nodeId String
  node   Node   @relation(fields: [nodeId], references: [id], onDelete: Cascade)

  /// The app that created this metadata field
  app   App    @relation(fields: [appId], references: [id])
  appId String

  appKey String

  value Bytes

  @@id([nodeId, appId, appKey])
  @@index([appId, appKey])
}

model NodeImplements {
  nodeId String
  node   Node   @relation(fields: [nodeId], references: [id])

  interfaceId String
  interface   Interface @relation(fields: [interfaceId], references: [id])

  @@id([nodeId, interfaceId])
}

model App {
  id String @id @default(uuid())

  localName String @unique
  title     String

  installed DateTime @default(now())

  patterns Patterns[]
  metaKeys NodeMeta[]
  edges    Edge[]
}

/// Regular expressions table
model Patterns {
  id String @id @default(uuid())

  pattern String

  /// Pattern type, see docs for details
  type String

  appId String
  app   App    @relation(fields: [appId], references: [id])

  functionName String
}

/// Index table, for keeping track of indexes to build and take down when the database first starts
model Indices {
  id      String @id @default(uuid())
  command String

  // TODO: Does sqlite avoid making duplicate indexes automatically?
}