// This is your Prisma schema file,
// learn more about it in the docs: https://pris.ly/d/prisma-schema

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

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

model Song {
  id        Int      @id @default(autoincrement())
  title     String
  artist    String
  filename  String   // Filename in public/uploads
  coverImage String?  // Filename in public/uploads/covers
  createdAt DateTime @default(now())
  puzzles   DailyPuzzle[]
  genres    Genre[]
  specials  SpecialSong[]
}

model Genre {
  id    Int    @id @default(autoincrement())
  name  String @unique
  songs Song[]
  dailyPuzzles DailyPuzzle[]
}

model Special {
  id          Int           @id @default(autoincrement())
  name        String        @unique
  maxAttempts Int           @default(7)
  unlockSteps String // JSON string: e.g. "[2, 4, 7, 11, 16, 30]"
  createdAt   DateTime      @default(now())
  launchDate  DateTime?
  endDate     DateTime?
  songs       SpecialSong[]
  puzzles     DailyPuzzle[]
}

model SpecialSong {
  id        Int     @id @default(autoincrement())
  specialId Int
  special   Special @relation(fields: [specialId], references: [id], onDelete: Cascade)
  songId    Int
  song      Song    @relation(fields: [songId], references: [id], onDelete: Cascade)
  startTime Int     @default(0) // Start time in seconds
  order     Int?    // For manual ordering

  @@unique([specialId, songId])
}

model DailyPuzzle {
  id        Int      @id @default(autoincrement())
  date      String   // Format: YYYY-MM-DD
  songId    Int
  song      Song     @relation(fields: [songId], references: [id])
  genreId   Int?
  genre     Genre?   @relation(fields: [genreId], references: [id])
  specialId Int?
  special   Special? @relation(fields: [specialId], references: [id])

  @@unique([date, genreId, specialId])
}