// 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 = "postgresql"
  url      = env("DATABASE_URL")
}

// Modelo de Usuario para autenticación
model User {
  id        String   @id @default(cuid())
  email     String   @unique
  password  String
  role      UserRole
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  // Relaciones
  teacher Teacher?
  student Student?

  @@map("users")
}

enum UserRole {
  ADMIN
  TEACHER
  STUDENT
}

// Modelo de Periodo Académico
model Period {
  id        String   @id @default(cuid())
  name      String
  startDate DateTime
  endDate   DateTime
  isActive  Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  deletedAt DateTime?

  // Relaciones
  classes   Class[]
  partials  Partial[]

  @@map("periods")
}

// Modelo de Parciales
model Partial {
  id       String @id @default(cuid())
  name     String
  periodId String
  isActive Boolean @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  deletedAt DateTime?

  // Relaciones
  period Period @relation(fields: [periodId], references: [id])

  @@map("partials")
}

// Modelo de Clases (Materias)
model Class {
  id          String   @id @default(cuid())
  name        String
  code        String   @unique
  description String?
  periodId    String
  isActive    Boolean  @default(true)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt
  deletedAt   DateTime?

  // Relaciones
  period   Period    @relation(fields: [periodId], references: [id])
  sections Section[]

  @@map("classes")
}

// Modelo de Secciones (Paralelos)
model Section {
  id        String   @id @default(cuid())
  name      String
  classId   String
  isActive  Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  deletedAt DateTime?

  // Relaciones
  class              Class               @relation(fields: [classId], references: [id])
  teacherAssignments TeacherAssignment[]
  studentEnrollments StudentEnrollment[]
  attendances        Attendance[]

  @@map("sections")
}

// Modelo de Profesores
model Teacher {
  id          String  @id @default(cuid())
  userId      String  @unique
  firstName   String
  lastName    String
  cedula      String  @unique
  email       String  @unique
  phone       String
  isActive    Boolean @default(true)
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt
  deletedAt   DateTime?

  // Relaciones
  user        User                @relation(fields: [userId], references: [id])
  assignments TeacherAssignment[]

  @@map("teachers")
}

// Modelo de Estudiantes
model Student {
  id              String  @id @default(cuid())
  userId          String  @unique
  firstName       String
  lastName        String
  cedula          String  @unique
  email           String  @unique
  phone           String
  admissionNumber String  @unique
  isActive        Boolean @default(true)
  createdAt       DateTime @default(now())
  updatedAt       DateTime @updatedAt
  deletedAt       DateTime?

  // Relaciones
  user        User                @relation(fields: [userId], references: [id])
  enrollments StudentEnrollment[]
  attendances Attendance[]

  @@map("students")
}

// Tabla de asignación de profesores a secciones
model TeacherAssignment {
  id        String   @id @default(cuid())
  teacherId String
  sectionId String
  isActive  Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  // Relaciones
  teacher Teacher @relation(fields: [teacherId], references: [id])
  section Section @relation(fields: [sectionId], references: [id])

  @@unique([teacherId, sectionId])
  @@map("teacher_assignments")
}

// Tabla de inscripción de estudiantes a secciones
model StudentEnrollment {
  id        String   @id @default(cuid())
  studentId String
  sectionId String
  isActive  Boolean  @default(true)
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt

  // Relaciones
  student Student @relation(fields: [studentId], references: [id])
  section Section @relation(fields: [sectionId], references: [id])

  @@unique([studentId, sectionId])
  @@map("student_enrollments")
}

// Modelo de Asistencia
model Attendance {
  id          String          @id @default(cuid())
  studentId   String
  sectionId   String
  date        DateTime        @db.Date
  status      AttendanceStatus
  reason      String?
  createdAt   DateTime        @default(now())
  updatedAt   DateTime        @updatedAt

  // Relaciones
  student Student @relation(fields: [studentId], references: [id])
  section Section @relation(fields: [sectionId], references: [id])

  @@unique([studentId, sectionId, date])
  @@map("attendances")
}

enum AttendanceStatus {
  PRESENT
  ABSENT
  JUSTIFIED
}