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

datasource db {
  provider = "postgresql"
}

model Session {
  id        String   @id @default(uuid())
  token     String   @unique
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  
  expiresAt DateTime
  createdAt DateTime @default(now())
  
  @@index([userId])
  @@index([token])
}

model User {
  id              String   @id @default(uuid())
  username        String   @unique
  password        String   // Bcrypt hash for login auth
  skywardPassword String   // Encrypted password for Skyward API calls
  createdAt       DateTime @default(now())
  
  classes     Class[]
  fetches     Fetch[]
  finalGrades FinalGrade[]
  sessions    Session[]
}

model Class {
  id        String   @id @default(uuid())
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  
  className String
  teacher   String
  period    String
  category  String
  
  createdAt DateTime @default(now())
  
  assignments Assignment[]
  finalGrades FinalGrade[]
  
  @@unique([userId, category, className])
  @@index([userId])
}

model Assignment {
  id           String   @id @default(uuid())
  classId      String
  class        Class    @relation(fields: [classId], references: [id], onDelete: Cascade)
  
  name         String
  dueDate      String
  score        String
  attempts     String
  isMajorGrade Boolean
  
  createdAt    DateTime @default(now())
  
  @@index([classId])
}

model FinalGrade {
  id          String   @id @default(uuid())
  userId      String
  user        User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  classId     String
  class       Class    @relation(fields: [classId], references: [id], onDelete: Cascade)
  
  grade       String   // The overall grade (e.g., "95.5%", "A", etc.)
  updatedAt   DateTime @default(now()) @updatedAt
  
  @@unique([userId, classId])  // One final grade per user per class
  @@index([userId])
  @@index([classId])
}

model Fetch {
  id          String   @id @default(uuid())
  userId      String
  user        User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  
  timestamp   DateTime @default(now())
  success     Boolean  @default(true)
  classCount  Int      @default(0)
  
  @@index([userId])
}