// Kodeva — Prisma schema
// DEV: SQLite (tanpa Docker/Postgres). Untuk PRODUKSI ganti provider ke "postgresql"
// dan ubah String enum/list kembali menjadi enum + String[] (lihat AGENTS.md §6).
//
// Nilai enum disimpan sebagai String agar kompatibel SQLite. Konstanta TypeScript
// tersedia di src/lib/constants.ts.

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

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

model User {
  id           String   @id @default(cuid())
  name         String
  email        String   @unique
  passwordHash String
  role         String   @default("TEACHER") // ADMIN | TEACHER
  avatarUrl    String?
  phone        String?
  isActive     Boolean  @default(true)
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt

  classesTaught  Class[]        @relation("ClassTeacher")
  sessions       Session[]
  journals       Journal[]
  reportCards    ReportCard[]
  placementTests PlacementTest[] @relation("Examiner")
  followUpsOwned FollowUp[]      @relation("FollowUpPIC")
}

model Student {
  id          String    @id @default(cuid())
  fullName    String
  phone       String
  email       String?   @unique
  photoUrl    String?
  parentName  String?
  parentPhone String?
  birthDate   DateTime?
  gender      String? // MALE | FEMALE
  address     String?
  leadSource  String // WHATSAPP | REFERRAL | BANNER | SOCIAL_MEDIA
  status      String    @default("CALON_STUDENT") // CALON_STUDENT | STUDENT | EX_STUDENT
  notes       String?
  joinedAt    DateTime?
  archivedAt  DateTime?
  createdAt   DateTime  @default(now())
  updatedAt   DateTime  @updatedAt

  enrollments     Enrollment[]
  attendances     Attendance[]
  payments        Payment[]
  reportCards     ReportCard[]
  placementTests  PlacementTest[]
  followUps       FollowUp[]
  journalStudents JournalStudent[]

  @@index([status])
  @@index([leadSource])
}

model Class {
  id              String    @id @default(cuid())
  name            String
  code            String    @unique
  description     String?
  level           String // BEGINNER | INTERMEDIATE | ADVANCED
  teacherId       String?
  teacher         User?     @relation("ClassTeacher", fields: [teacherId], references: [id])
  totalMeetings   Int       @default(10)
  packagePrice    Int       @default(0)
  pricePerMeeting Int?
  capacity        Int       @default(12)
  schedule        String?
  startDate       DateTime?
  endDate         DateTime?
  status          String    @default("ACTIVE") // DRAFT | ACTIVE | COMPLETED | ARCHIVED
  color           String?
  createdAt       DateTime  @default(now())
  updatedAt       DateTime  @updatedAt

  enrollments Enrollment[]
  sessions    Session[]
  payments    Payment[]
  journals    Journal[]
  reportCards ReportCard[]
}

model Enrollment {
  id        String    @id @default(cuid())
  studentId String
  student   Student   @relation(fields: [studentId], references: [id], onDelete: Cascade)
  classId   String
  class     Class     @relation(fields: [classId], references: [id], onDelete: Cascade)
  status    String    @default("ACTIVE") // ACTIVE | COMPLETED | DROPPED
  joinedAt  DateTime  @default(now())
  leftAt    DateTime?
  createdAt DateTime  @default(now())

  @@unique([studentId, classId])
}

model Session {
  id            String   @id @default(cuid())
  classId       String
  class         Class    @relation(fields: [classId], references: [id], onDelete: Cascade)
  meetingNumber Int
  date          DateTime
  topic         String?
  teacherId     String?
  teacher       User?    @relation(fields: [teacherId], references: [id])
  createdAt     DateTime @default(now())

  attendances Attendance[]
  journals    Journal[]

  @@unique([classId, meetingNumber])
}

model Attendance {
  id           String   @id @default(cuid())
  sessionId    String
  session      Session  @relation(fields: [sessionId], references: [id], onDelete: Cascade)
  studentId    String
  student      Student  @relation(fields: [studentId], references: [id], onDelete: Cascade)
  status       String // PRESENT | LATE | EXCUSED | SICK | ABSENT
  note         String?
  recordedById String?
  createdAt    DateTime @default(now())

  @@unique([sessionId, studentId])
}

model Payment {
  id              String   @id @default(cuid())
  invoiceNumber   String   @unique
  studentId       String
  student         Student  @relation(fields: [studentId], references: [id])
  classId         String
  class           Class    @relation(fields: [classId], references: [id])
  meetingsPaid    Int
  pricePerMeeting Int
  amount          Int
  method          String // CASH | TRANSFER | QRIS
  status          String   @default("PAID") // UNPAID | PARTIAL | PAID | REFUNDED
  paidAt          DateTime
  note            String?
  proofUrl        String?
  createdById     String?
  createdAt       DateTime @default(now())
}

model Journal {
  id           String   @id @default(cuid())
  classId      String
  class        Class    @relation(fields: [classId], references: [id], onDelete: Cascade)
  sessionId    String?
  session      Session? @relation(fields: [sessionId], references: [id])
  title        String
  description  String?
  activityDate DateTime
  tags         String   @default("") // comma separated
  authorId     String
  author       User     @relation(fields: [authorId], references: [id])
  createdAt    DateTime @default(now())
  updatedAt    DateTime @updatedAt

  photos   JournalPhoto[]
  students JournalStudent[]
}

model JournalPhoto {
  id        String  @id @default(cuid())
  journalId String
  journal   Journal @relation(fields: [journalId], references: [id], onDelete: Cascade)
  url       String
  caption   String?
  sortOrder Int     @default(0)
}

model JournalStudent {
  journalId String
  studentId String
  journal   Journal @relation(fields: [journalId], references: [id], onDelete: Cascade)
  student   Student @relation(fields: [studentId], references: [id], onDelete: Cascade)

  @@id([journalId, studentId])
}

model ReportCard {
  id                String    @id @default(cuid())
  studentId         String
  student           Student   @relation(fields: [studentId], references: [id], onDelete: Cascade)
  classId           String
  class             Class     @relation(fields: [classId], references: [id])
  period            String
  teacherId         String
  teacher           User      @relation(fields: [teacherId], references: [id])
  attendanceSummary String?
  finalScore        Int?
  grade             String?
  teacherNotes      String?
  publishedAt       DateTime?
  createdAt         DateTime  @default(now())
  updatedAt         DateTime  @updatedAt

  scores ReportScore[]
}

model ReportScore {
  id           String     @id @default(cuid())
  reportCardId String
  reportCard   ReportCard @relation(fields: [reportCardId], references: [id], onDelete: Cascade)
  aspect       String
  score        Int
  note         String?
}

model PlacementTest {
  id                 String   @id @default(cuid())
  studentId          String
  student            Student  @relation(fields: [studentId], references: [id], onDelete: Cascade)
  testDate           DateTime
  levelResult        String // BEGINNER | INTERMEDIATE | ADVANCED
  recommendedClassId String?
  totalScore         Int
  examinerId         String?
  examiner           User?    @relation("Examiner", fields: [examinerId], references: [id])
  notes              String?
  createdAt          DateTime @default(now())

  scores PlacementScore[]
}

model PlacementScore {
  id              String        @id @default(cuid())
  placementTestId String
  placementTest   PlacementTest @relation(fields: [placementTestId], references: [id], onDelete: Cascade)
  category        String
  score           Int
}

model FollowUp {
  id              String    @id @default(cuid())
  studentId       String
  student         Student   @relation(fields: [studentId], references: [id], onDelete: Cascade)
  status          String    @default("NEW") // NEW | CONTACTED | TRIAL | OFFER_SENT | ENROLLED | LOST
  picId           String?
  pic             User?     @relation("FollowUpPIC", fields: [picId], references: [id])
  nextFollowUpAt  DateTime?
  lastContactedAt DateTime?
  channel         String?
  createdAt       DateTime  @default(now())
  updatedAt       DateTime  @updatedAt

  activities FollowUpActivity[]

  @@index([status])
  @@index([nextFollowUpAt])
}

model FollowUpActivity {
  id         String   @id @default(cuid())
  followUpId String
  followUp   FollowUp @relation(fields: [followUpId], references: [id], onDelete: Cascade)
  type       String // call | wa | email | meeting
  note       String
  authorId   String?
  createdAt  DateTime @default(now())
}

model Setting {
  key   String @id
  value String // JSON string (SQLite)
}