generator client {
  provider      = "prisma-client-js"
  binaryTargets = ["native", "linux-musl-openssl-3.0.x"]
}

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

model User {
  id                String    @id @default(cuid())
  email             String    @unique
  username          String?   @unique
  passwordHash      String?   // null for OAuth-only users
  name              String?
  avatar            String?
  provider          String    @default("local") // "local", "google", "github", etc.
  providerId        String?   // OAuth provider's user ID
  role              Role      @default(USER)
  emailVerified     Boolean   @default(false)
  emailVerifiedAt   DateTime?
  createdAt         DateTime  @default(now())
  updatedAt         DateTime  @updatedAt

  recipes            Recipe[]
  cookbooks          Cookbook[]
  sharedRecipes      RecipeShare[]
  refreshTokens      RefreshToken[]
  verificationTokens VerificationToken[]

  @@index([email])
  @@index([provider, providerId])
}

model VerificationToken {
  id        String   @id @default(cuid())
  userId    String
  token     String   @unique
  type      TokenType
  expiresAt DateTime
  createdAt DateTime @default(now())

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

  @@index([userId])
  @@index([token])
}

enum TokenType {
  EMAIL_VERIFICATION
  PASSWORD_RESET
}

enum Role {
  USER
  ADMIN
}

enum Visibility {
  PRIVATE      // Only owner can see
  SHARED       // Owner + specific users
  PUBLIC       // Everyone can see
}

model RefreshToken {
  id        String   @id @default(cuid())
  userId    String
  token     String   @unique
  expiresAt DateTime
  createdAt DateTime @default(now())

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

  @@index([userId])
  @@index([token])
}

model Recipe {
  id          String     @id @default(cuid())
  title       String
  description String?
  prepTime    Int?       // minutes
  cookTime    Int?       // minutes
  totalTime   Int?       // minutes
  servings    Int?
  imageUrl    String?
  sourceUrl   String?    // For imported recipes
  author      String?
  cuisine     String?
  categories  String[]   @default([])  // Changed from single category to array
  rating      Float?
  userId      String?    // Recipe owner
  visibility  Visibility @default(PRIVATE)
  createdAt   DateTime   @default(now())
  updatedAt   DateTime   @updatedAt

  user         User?              @relation(fields: [userId], references: [id], onDelete: SetNull)
  sections     RecipeSection[]
  ingredients  Ingredient[]
  instructions Instruction[]
  images       RecipeImage[]
  tags         RecipeTag[]
  cookbooks    CookbookRecipe[]
  sharedWith   RecipeShare[]

  @@index([title])
  @@index([cuisine])
  @@index([userId])
  @@index([visibility])
}

model RecipeSection {
  id       String  @id @default(cuid())
  recipeId String
  name     String  // e.g., "Starter", "Dough", "Assembly"
  order    Int
  timing   String? // e.g., "Day 1 - 8PM", "12 hours before mixing"

  recipe       Recipe        @relation(fields: [recipeId], references: [id], onDelete: Cascade)
  ingredients  Ingredient[]
  instructions Instruction[]

  @@index([recipeId])
}

model Ingredient {
  id        String  @id @default(cuid())
  recipeId  String? // Optional - can be derived from section
  sectionId String? // Optional - if null, belongs to recipe directly
  name      String
  amount    String?
  unit      String?
  notes     String?
  order     Int

  recipe       Recipe?                           @relation(fields: [recipeId], references: [id], onDelete: Cascade)
  section      RecipeSection?                    @relation(fields: [sectionId], references: [id], onDelete: Cascade)
  instructions IngredientInstructionMapping[]

  @@index([recipeId])
  @@index([sectionId])
}

model Instruction {
  id        String  @id @default(cuid())
  recipeId  String? // Optional - can be derived from section
  sectionId String? // Optional - if null, belongs to recipe directly
  step      Int
  text      String  @db.Text
  imageUrl  String?
  timing    String? // e.g., "8:00am", "After 30 minutes", "Day 2 - Morning"

  recipe      Recipe?                           @relation(fields: [recipeId], references: [id], onDelete: Cascade)
  section     RecipeSection?                    @relation(fields: [sectionId], references: [id], onDelete: Cascade)
  ingredients IngredientInstructionMapping[]

  @@index([recipeId])
  @@index([sectionId])
}

model IngredientInstructionMapping {
  id            String      @id @default(cuid())
  ingredientId  String
  instructionId String
  order         Int         // Display order within the instruction

  ingredient  Ingredient  @relation(fields: [ingredientId], references: [id], onDelete: Cascade)
  instruction Instruction @relation(fields: [instructionId], references: [id], onDelete: Cascade)

  @@unique([ingredientId, instructionId])
  @@index([instructionId])
  @@index([ingredientId])
}

model RecipeImage {
  id       String @id @default(cuid())
  recipeId String
  url      String
  order    Int

  recipe Recipe @relation(fields: [recipeId], references: [id], onDelete: Cascade)

  @@index([recipeId])
}

model Tag {
  id      String      @id @default(cuid())
  name    String      @unique
  recipes RecipeTag[]
}

model RecipeTag {
  recipeId String
  tagId    String

  recipe Recipe @relation(fields: [recipeId], references: [id], onDelete: Cascade)
  tag    Tag    @relation(fields: [tagId], references: [id], onDelete: Cascade)

  @@id([recipeId, tagId])
  @@index([recipeId])
  @@index([tagId])
}

model RecipeShare {
  id         String   @id @default(cuid())
  recipeId   String
  userId     String
  createdAt  DateTime @default(now())

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

  @@unique([recipeId, userId])
  @@index([recipeId])
  @@index([userId])
}

model Cookbook {
  id            String   @id @default(cuid())
  name          String
  description   String?
  coverImageUrl String?
  userId        String?  // Cookbook owner
  autoFilterCategories String[] @default([])  // Auto-add recipes matching these categories
  autoFilterTags       String[] @default([])  // Auto-add recipes matching these tags
  createdAt     DateTime @default(now())
  updatedAt     DateTime @updatedAt

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

  @@index([name])
  @@index([userId])
}

model CookbookRecipe {
  id         String   @id @default(cuid())
  cookbookId String
  recipeId   String
  addedAt    DateTime @default(now())

  cookbook Cookbook @relation(fields: [cookbookId], references: [id], onDelete: Cascade)
  recipe   Recipe   @relation(fields: [recipeId], references: [id], onDelete: Cascade)

  @@unique([cookbookId, recipeId])
  @@index([cookbookId])
  @@index([recipeId])
}