// ─────────────────────────────────────────────────────────────────────────────
// InvestPlay – Prisma Schema (PostgreSQL)
// Multi-tenant financial education platform
// ─────────────────────────────────────────────────────────────────────────────

generator client {
  provider        = "prisma-client-js"
  previewFeatures = ["multiSchema", "fullTextSearch"]
}

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

// ─── Enums ───────────────────────────────────────────────────────────────────

enum UserRole {
  STUDENT
  TEACHER
  TENANT_ADMIN
  PLATFORM_ADMIN
  CONTENT_MANAGER
  RESEARCHER
}

enum AIMode {
  MANAGED
  BYOK
  DISABLED
}

enum SubscriptionStatus {
  TRIALING
  ACTIVE
  PAST_DUE
  CANCELED
  EXPIRED
}

enum CurriculumTrack {
  SURVIVAL_BASICS
  CREDIT_DEBT
  WEALTH_BUILDER
  ANTI_HYPE
  MACROECONOMICS
}

enum ProgressStatus {
  NOT_STARTED
  IN_PROGRESS
  COMPLETED
  FAILED
}

enum SubmissionStatus {
  PENDING
  SUBMITTED
  GRADED
  RETURNED
}

enum SimulationType {
  BUDGET_CHALLENGE
  EMERGENCY_FUND
  COST_OF_LIVING
  BLIND_ASSET
  MARKET_CRASH
  RENT_VS_TRANSPORT
  SAVINGS_HABIT
  ESG_PORTFOLIO
  INTEREST_APY
  DEBT_REPAYMENT
}

enum SessionStatus {
  WAITING
  IN_PROGRESS
  ENDED
  CANCELLED
}

enum AssetType {
  STOCK
  ETF
  BOND
  CRYPTO
  CASH
  REAL_ESTATE
  COMMODITY
}

enum TradeType {
  BUY
  SELL
}

enum XPReason {
  LESSON_COMPLETED
  QUIZ_PASSED
  STREAK_MAINTAINED
  CHALLENGE_COMPLETED
  SIMULATION_COMPLETED
  DIVERSIFICATION
  RISK_MANAGEMENT
  HYPE_AVOIDED
  DEBT_PAID_OFF
}

enum BadgeCategory {
  MILESTONE
  SKILL
  CHALLENGE
  STREAK
  SPECIAL
}

enum AnalyticsEventType {
  LESSON_STARTED
  LESSON_COMPLETED
  QUIZ_ATTEMPTED
  SIMULATION_JOINED
  TRADE_EXECUTED
  RISK_WARNING_SHOWN
  RISK_WARNING_IGNORED
  PANIC_SELL_DETECTED
  HYPE_TRAP_TRIGGERED
  AI_COACH_CONSULTED
}

// ─── Core Identity ───────────────────────────────────────────────────────────

model User {
  id              String   @id @default(cuid())
  email           String   @unique
  passwordHash    String?
  firstName       String
  lastName        String
  role            UserRole
  locale          String   @default("en")
  avatarUrl       String?
  tenantId        String
  xp              Int      @default(0)
  level           Int      @default(1)
  streakDays      Int      @default(0)
  lastActiveAt    DateTime?
  emailVerifiedAt DateTime?
  ssoProvider     String?
  ssoSubject      String?
  deletedAt       DateTime?
  createdAt       DateTime @default(now())
  updatedAt       DateTime @updatedAt

  tenant            Tenant              @relation(fields: [tenantId], references: [id], onDelete: Restrict, onUpdate: Cascade)
  progress          UserProgress[]
  portfolios        Portfolio[]        @relation("UserPortfolio")
  trades            Trade[]
  badges            UserBadge[]
  classrooms        ClassroomStudent[]
  aiLogs            AILog[]
  refreshTokens     RefreshToken[]
  quizAttempts      QuizAttempt[]
  xpEvents          XPEvent[]
  dailyStreaks      DailyStreak[]
  analyticsEvents   AnalyticsEvent[]
  createdClassrooms Classroom[]         @relation("ClassroomTeacher")
  createdSimulations SimulationSession[] @relation("SimulationCreator")
  submittedAssignments AssignmentSubmission[]

  @@index([tenantId])
  @@index([email])
  @@index([role])
  @@unique([ssoProvider, ssoSubject])
  @@map("users")
}

model Tenant {
  id                     String             @id @default(cuid())
  name                   String
  slug                   String             @unique
  domain                 String?
  domains                Json?
  branding               Json?
  featureFlags           Json?
  aiMode                 AIMode             @default(MANAGED)
  aiApiKey               String?
  aiMonthlyTokenBudget   Int                @default(1000000)
  aiTokensUsedThisMonth  Int                @default(0)
  defaultLocale          String             @default("en")
  excludeFromResearch    Boolean            @default(false)
  subscriptionStatus     SubscriptionStatus @default(TRIALING)
  stripeCustomerId       String?
  stripeSubscriptionId   String?
  maxStudents            Int?
  deletedAt              DateTime?
  createdAt              DateTime           @default(now())
  updatedAt              DateTime           @updatedAt

  users       User[]
  classrooms  Classroom[]
  modules     Module[]
  aiLogs      AILog[]

  @@index([slug])
  @@index([domain])
  @@index([subscriptionStatus])
  @@map("tenants")
}

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

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

  @@index([userId])
  @@index([token])
  @@map("refresh_tokens")
}

// ─── Curriculum ──────────────────────────────────────────────────────────────

model Module {
  id              String          @id @default(cuid())
  cmsId           String
  track           CurriculumTrack
  title           String
  description     String?
  order           Int
  estimatedHours  Float?
  xpReward        Int             @default(100)
  tenantId        String?
  isActive        Boolean         @default(true)
  createdAt       DateTime        @default(now())
  updatedAt       DateTime        @updatedAt

  lessons Lesson[]
  tenant  Tenant? @relation(fields: [tenantId], references: [id], onDelete: Cascade, onUpdate: Cascade)

  @@index([track])
  @@index([tenantId])
  @@index([cmsId])
  @@map("modules")
}

model Lesson {
  id                String   @id @default(cuid())
  cmsId             String
  moduleId          String
  title             String
  description       String?
  order             Int
  estimatedMins     Int      @default(5)
  xpReward          Int      @default(25)
  requiredLessonId  String?
  blocks            Json?
  isActive          Boolean  @default(true)
  createdAt         DateTime @default(now())
  updatedAt         DateTime @updatedAt

  module            Module          @relation(fields: [moduleId], references: [id], onDelete: Cascade, onUpdate: Cascade)
  requiredLesson    Lesson?         @relation("LessonPrerequisite", fields: [requiredLessonId], references: [id], onDelete: SetNull, onUpdate: Cascade)
  dependentLessons  Lesson[]        @relation("LessonPrerequisite")
  progress          UserProgress[]
  assignments       Assignment[]
  quizAttempts      QuizAttempt[]

  @@index([moduleId])
  @@index([cmsId])
  @@map("lessons")
}

model UserProgress {
  id              String         @id @default(cuid())
  userId          String
  lessonId        String
  status          ProgressStatus
  quizScore       Float?
  quizAttempts    Int            @default(0)
  timeSpentSeconds Int           @default(0)
  completedAt     DateTime?
  createdAt       DateTime       @default(now())
  updatedAt       DateTime       @updatedAt

  user   User   @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)
  lesson Lesson @relation(fields: [lessonId], references: [id], onDelete: Restrict, onUpdate: Cascade)

  @@unique([userId, lessonId])
  @@index([userId])
  @@index([lessonId])
  @@index([status])
  @@map("user_progress")
}

model QuizAttempt {
  id          String   @id @default(cuid())
  userId      String
  lessonId    String
  answers     Json
  score       Float
  passed      Boolean
  attemptedAt DateTime @default(now())

  user   User   @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)
  lesson Lesson @relation(fields: [lessonId], references: [id], onDelete: Restrict, onUpdate: Cascade)

  @@index([userId])
  @@index([lessonId])
  @@map("quiz_attempts")
}

// ─── Classroom ───────────────────────────────────────────────────────────────

model Classroom {
  id              String   @id @default(cuid())
  name            String
  description     String?
  tenantId        String
  teacherId       String
  inviteCode      String   @unique
  inviteExpiresAt DateTime?
  isActive        Boolean  @default(true)
  createdAt       DateTime @default(now())
  updatedAt       DateTime @updatedAt

  tenant             Tenant                @relation(fields: [tenantId], references: [id], onDelete: Cascade, onUpdate: Cascade)
  teacher            User                  @relation("ClassroomTeacher", fields: [teacherId], references: [id], onDelete: Restrict, onUpdate: Cascade)
  students           ClassroomStudent[]
  assignments        Assignment[]
  simulationSessions SimulationSession[]

  @@map("classrooms")
}

model ClassroomStudent {
  id          String    @id @default(cuid())
  classroomId String
  userId      String
  joinedAt    DateTime  @default(now())
  leftAt      DateTime?

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

  @@unique([classroomId, userId])
  @@index([userId])
  @@map("classroom_students")
}

model Assignment {
  id          String   @id @default(cuid())
  classroomId String
  lessonId    String
  title       String
  description String?
  dueDate     DateTime?
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt

  classroom   Classroom              @relation(fields: [classroomId], references: [id], onDelete: Cascade, onUpdate: Cascade)
  lesson      Lesson                 @relation(fields: [lessonId], references: [id], onDelete: Restrict, onUpdate: Cascade)
  submissions AssignmentSubmission[]

  @@map("assignments")
}

model AssignmentSubmission {
  id           String         @id @default(cuid())
  assignmentId String
  userId       String
  status       SubmissionStatus
  score        Float?
  feedback     String?
  submittedAt  DateTime?
  gradedAt     DateTime?

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

  @@unique([assignmentId, userId])
  @@map("assignment_submissions")
}

// ─── Simulation & Portfolio ──────────────────────────────────────────────────

model SimulationSession {
  id           String         @id @default(cuid())
  type         SimulationType
  title        String
  description  String?
  classroomId  String?
  createdById  String
  scenarioData Json
  status       SessionStatus
  startedAt    DateTime?
  endedAt      DateTime?
  createdAt    DateTime       @default(now())

  classroom Classroom? @relation(fields: [classroomId], references: [id], onDelete: SetNull, onUpdate: Cascade)
  creator   User       @relation("SimulationCreator", fields: [createdById], references: [id], onDelete: Restrict, onUpdate: Cascade)
  portfolios Portfolio[]

  @@map("simulation_sessions")
}

model Portfolio {
  id                  String   @id @default(cuid())
  userId              String
  simulationSessionId String?
  name                String   @default("My Portfolio")
  cashBalance         Decimal  @default(0)
  initialBalance      Decimal  @default(10000)
  currentValue        Decimal?
  roi                 Float?
  createdAt           DateTime @default(now())
  updatedAt           DateTime @updatedAt

  user              User               @relation("UserPortfolio", fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)
  simulationSession SimulationSession? @relation(fields: [simulationSessionId], references: [id], onDelete: SetNull, onUpdate: Cascade)
  holdings          Holding[]
  trades            Trade[]

  @@map("portfolios")
}

model Holding {
  id                  String    @id @default(cuid())
  portfolioId         String
  assetSymbol         String
  assetName           String?
  assetType           AssetType
  quantity            Decimal
  averagePrice        Decimal
  currentPrice        Decimal?
  allocationPercentage Float?
  createdAt           DateTime  @default(now())
  updatedAt           DateTime  @updatedAt

  portfolio Portfolio @relation(fields: [portfolioId], references: [id], onDelete: Cascade, onUpdate: Cascade)

  @@index([portfolioId])
  @@map("holdings")
}

model Trade {
  id              String   @id @default(cuid())
  portfolioId     String
  userId          String
  assetSymbol     String
  type            TradeType
  quantity        Decimal
  price           Decimal
  totalValue      Decimal
  simulationTick  Int?
  executedAt      DateTime @default(now())

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

  @@index([portfolioId])
  @@index([userId])
  @@index([executedAt])
  @@map("trades")
}

// ─── Gamification ────────────────────────────────────────────────────────────

model Badge {
  id          String        @id @default(cuid())
  key         String        @unique
  name        String
  description String
  icon        String
  category    BadgeCategory
  criteria    Json
  xpReward    Int           @default(50)
  createdAt   DateTime      @default(now())

  users UserBadge[]

  @@map("badges")
}

model UserBadge {
  id        String   @id @default(cuid())
  userId    String
  badgeId   String
  earnedAt  DateTime @default(now())
  context   Json?

  user  User  @relation(fields: [userId], references: [id], onDelete: Cascade, onUpdate: Cascade)
  badge Badge @relation(fields: [badgeId], references: [id], onDelete: Restrict, onUpdate: Cascade)

  @@unique([userId, badgeId])
  @@index([userId])
  @@map("user_badges")
}

model XPEvent {
  id        String   @id @default(cuid())
  userId    String
  reason    XPReason
  amount    Int
  context   Json?
  awardedAt DateTime @default(now())

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

  @@index([userId])
  @@index([awardedAt])
  @@map("xp_events")
}

model DailyStreak {
  id        String   @id @default(cuid())
  userId    String
  date      DateTime @db.Date
  activities Int

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

  @@unique([userId, date])
  @@index([userId])
  @@map("daily_streaks")
}

// ─── AI Coach ────────────────────────────────────────────────────────────────

model AILog {
  id               String   @id @default(cuid())
  tenantId         String
  userId           String
  sessionId        String?
  message          String
  responsePreview  String?
  tokensUsed       Int
  modelUsed        String
  contextInjected  Json?
  createdAt        DateTime @default(now())

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

  @@index([tenantId])
  @@index([userId])
  @@index([createdAt])
  @@index([tenantId, createdAt])
  @@map("ai_logs")
}

// ─── Analytics ───────────────────────────────────────────────────────────────

model AnalyticsEvent {
  id        String             @id @default(cuid())
  userId    String
  eventType AnalyticsEventType
  metadata  Json
  sessionId String?
  createdAt DateTime           @default(now())

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

  @@index([userId])
  @@index([eventType])
  @@index([createdAt])
  @@index([eventType, createdAt])
  @@map("analytics_events")
}