generator client {
  provider = "prisma-client"
  output   = "../generated/prisma"
}

datasource db {
  provider = "postgresql"
}

model User {
  id                   String               @id
  name                 String
  email                String
  emailVerified        Boolean              @default(false)
  image                String?
  createdAt            DateTime             @default(now())
  updatedAt            DateTime             @updatedAt
  sessions             Session[]
  accounts             Account[]
  folders              Folder[]
  dictionaryLookUps    DictionaryLookUp[]
  translationHistories TranslationHistory[]

  username        String?
  displayUsername String?

  @@unique([email])
  @@map("user")
  @@unique([username])
}

model Session {
  id        String   @id
  expiresAt DateTime
  token     String
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  ipAddress String?
  userAgent String?
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@unique([token])
  @@index([userId])
  @@map("session")
}

model Account {
  id                    String    @id
  accountId             String
  providerId            String
  userId                String
  user                  User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  accessToken           String?
  refreshToken          String?
  idToken               String?
  accessTokenExpiresAt  DateTime?
  refreshTokenExpiresAt DateTime?
  scope                 String?
  password              String?
  createdAt             DateTime  @default(now())
  updatedAt             DateTime  @updatedAt

  @@index([userId])
  @@map("account")
}

model Verification {
  id         String   @id
  identifier String
  value      String
  expiresAt  DateTime
  createdAt  DateTime @default(now())
  updatedAt  DateTime @updatedAt

  @@index([identifier])
  @@map("verification")
}

model Pair {
  id        Int      @id @default(autoincrement())
  text1     String
  text2     String
  language1 String
  language2 String
  ipa1      String?
  ipa2      String?
  folderId  Int      @map("folder_id")
  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  folder Folder @relation(fields: [folderId], references: [id], onDelete: Cascade)

  @@unique([folderId, language1, language2, text1, text2])
  @@index([folderId])
  @@map("pairs")
}

model Folder {
  id        Int      @id @default(autoincrement())
  name      String
  userId    String   @map("user_id")
  createdAt DateTime @default(now()) @map("created_at")
  updatedAt DateTime @updatedAt @map("updated_at")

  user  User   @relation(fields: [userId], references: [id], onDelete: Cascade)
  pairs Pair[]

  @@index([userId])
  @@map("folders")
}

model DictionaryLookUp {
  id               Int      @id @default(autoincrement())
  userId           String?  @map("user_id")
  text             String
  normalizedText   String   @default("") @map("normalized_text")
  queryLang        String   @map("query_lang")
  definitionLang   String   @map("definition_lang")
  createdAt        DateTime @default(now()) @map("created_at")
  dictionaryItemId Int?     @map("dictionary_item_id")

  user           User?           @relation(fields: [userId], references: [id])
  dictionaryItem DictionaryItem? @relation(fields: [dictionaryItemId], references: [id], onDelete: SetNull)

  @@index([userId])
  @@index([createdAt])
  @@index([normalizedText])
  @@map("dictionary_lookups")
}

model DictionaryItem {
  id             Int      @id @default(autoincrement())
  frequency      Int      @default(1)
  standardForm   String   @map("standard_form")
  queryLang      String   @map("query_lang")
  definitionLang String   @map("definition_lang")
  createdAt      DateTime @default(now()) @map("created_at")
  updatedAt      DateTime @updatedAt @map("updated_at")

  lookups DictionaryLookUp[]
  entries DictionaryEntry[]

  @@unique([standardForm, queryLang, definitionLang])
  @@index([standardForm])
  @@index([queryLang, definitionLang])
  @@map("dictionary_items")
}

model DictionaryEntry {
  id           Int      @id @default(autoincrement())
  itemId       Int      @map("item_id")
  ipa          String?
  definition   String
  partOfSpeech String?  @map("part_of_speech")
  example      String
  createdAt    DateTime @default(now()) @map("created_at")
  updatedAt    DateTime @updatedAt @map("updated_at")

  item DictionaryItem @relation(fields: [itemId], references: [id], onDelete: Cascade)

  @@index([itemId])
  @@index([createdAt])
  @@map("dictionary_entries")
}

model TranslationHistory {
  id             Int      @id @default(autoincrement())
  userId         String?  @map("user_id")
  sourceText     String   @map("source_text")
  sourceLanguage String   @map("source_language")
  targetLanguage String   @map("target_language")
  translatedText String   @map("translated_text")
  sourceIpa      String?  @map("source_ipa")
  targetIpa      String?  @map("target_ipa")
  createdAt      DateTime @default(now()) @map("created_at")
  updatedAt      DateTime @updatedAt @map("updated_at")

  user User? @relation(fields: [userId], references: [id], onDelete: SetNull)

  @@index([userId])
  @@index([createdAt])
  @@index([sourceText, targetLanguage])
  @@index([translatedText, sourceLanguage, targetLanguage])
  @@map("translation_history")
}