// prisma/schema.prisma

generator client {
  provider = "prisma-client-js"
  previewFeatures = ["fullTextIndex"]
}

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

// ============================================
// AUTHENTICATION & USERS
// ============================================

model User {
  id            String    @id @default(uuid())
  email         String    @unique
  displayName   String?   @map("display_name")
  passwordHash  String?   @map("password_hash")
  authProvider  String    @default("local") @map("auth_provider") // local, google, microsoft
  providerId    String?   @map("provider_id")
  createdAt     DateTime  @default(now()) @map("created_at")
  updatedAt     DateTime  @updatedAt @map("updated_at")

  documents     Document[]
  comments      Comment[]
  bugReports    BugReport[]

  @@map("users")
}

// ============================================
// DICTIONARY / TERMS
// ============================================

model Term {
  id              String        @id @default(uuid())
  wordText        String        @map("word_text") @db.VarChar(255)
  normalizedText  String        @map("normalized_text") @db.VarChar(255)
  language        String        @default("hr") @db.VarChar(10)
  wordType        WordType      @map("word_type")
  cefrLevel       CefrLevel     @map("cefr_level")
  shortDescription String?      @map("short_description") @db.Text
  tags            String?       @db.Text // JSON array stored as text
  iconAssetId     String?       @map("icon_asset_id")
  createdAt       DateTime      @default(now()) @map("created_at")
  updatedAt       DateTime      @updatedAt @map("updated_at")

  media           TermMedia[]
  examples        TermExample[]
  sentenceTokens  SentenceToken[]

  @@index([normalizedText])
  @@fulltext([wordText, normalizedText])
  @@map("terms")
}

model TermMedia {
  id          String      @id @default(uuid())
  termId      String      @map("term_id")
  kind        MediaKind
  url         String      @db.VarChar(500)
  durationMs  Int?        @map("duration_ms")
  width       Int?
  height      Int?
  checksum    String?     @db.VarChar(64)
  createdAt   DateTime    @default(now()) @map("created_at")

  term        Term        @relation(fields: [termId], references: [id], onDelete: Cascade)

  @@index([termId])
  @@map("term_media")
}

model TermExample {
  id            String    @id @default(uuid())
  termId        String    @map("term_id")
  exampleText   String    @map("example_text") @db.Text
  notes         String?   @db.Text
  createdAt     DateTime  @default(now()) @map("created_at")

  term          Term      @relation(fields: [termId], references: [id], onDelete: Cascade)

  @@index([termId])
  @@map("term_examples")
}

// ============================================
// DOCUMENTS & SENTENCES (ZNAKOPIS)
// ============================================

model Document {
  id          String      @id @default(uuid())
  ownerUserId String?     @map("owner_user_id")
  title       String      @db.VarChar(255)
  description String?     @db.Text
  visibility  Visibility  @default(PRIVATE)
  createdAt   DateTime    @default(now()) @map("created_at")
  updatedAt   DateTime    @updatedAt @map("updated_at")

  owner       User?       @relation(fields: [ownerUserId], references: [id], onDelete: SetNull)
  pages       DocumentPage[]

  @@index([ownerUserId])
  @@map("documents")
}

model DocumentPage {
  id          String      @id @default(uuid())
  documentId  String      @map("document_id")
  pageIndex   Int         @map("page_index")
  title       String?     @db.VarChar(255)

  document    Document    @relation(fields: [documentId], references: [id], onDelete: Cascade)
  sentences   Sentence[]

  @@unique([documentId, pageIndex])
  @@index([documentId])
  @@map("document_pages")
}

model Sentence {
  id              String          @id @default(uuid())
  documentPageId  String          @map("document_page_id")
  sentenceIndex   Int             @map("sentence_index")
  rawText         String?         @map("raw_text") @db.Text

  documentPage    DocumentPage    @relation(fields: [documentPageId], references: [id], onDelete: Cascade)
  tokens          SentenceToken[]

  @@unique([documentPageId, sentenceIndex])
  @@index([documentPageId])
  @@map("sentences")
}

model SentenceToken {
  id            String    @id @default(uuid())
  sentenceId    String    @map("sentence_id")
  tokenIndex    Int       @map("token_index")
  termId        String?   @map("term_id")
  displayText   String    @map("display_text") @db.VarChar(255)
  isPunctuation Boolean   @default(false) @map("is_punctuation")

  sentence      Sentence  @relation(fields: [sentenceId], references: [id], onDelete: Cascade)
  term          Term?     @relation(fields: [termId], references: [id], onDelete: SetNull)

  @@unique([sentenceId, tokenIndex])
  @@index([sentenceId])
  @@index([termId])
  @@map("sentence_tokens")
}

// ============================================
// COMMUNITY & SUPPORT
// ============================================

model Comment {
  id          String    @id @default(uuid())
  userId      String    @map("user_id")
  content     String    @db.Text
  context     String?   @db.VarChar(255) // e.g., "term:uuid" or "general"
  createdAt   DateTime  @default(now()) @map("created_at")

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

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

model BugReport {
  id          String      @id @default(uuid())
  userId      String?     @map("user_id")
  title       String      @db.VarChar(255)
  description String      @db.Text
  status      BugStatus   @default(OPEN)
  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([status])
  @@map("bug_reports")
}

// ============================================
// ENUMS
// ============================================

enum WordType {
  NOUN
  VERB
  ADJECTIVE
  ADVERB
  PRONOUN
  PREPOSITION
  CONJUNCTION
  INTERJECTION
  PHRASE
  OTHER
}

enum CefrLevel {
  A1
  A2
  B1
  B2
  C1
  C2
}

enum MediaKind {
  VIDEO
  IMAGE
  ILLUSTRATION
}

enum Visibility {
  PRIVATE
  SHARED
  PUBLIC
}

enum BugStatus {
  OPEN
  IN_PROGRESS
  RESOLVED
  CLOSED
}