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

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

model User {
  id              String          @id @default(cuid())
  username        String          @unique  // lowercase, used for URLs/lookups
  displayUsername String?                  // original casing chosen by user
  passwordHash    String
  balance         Float           @default(2000)
  researchPoints  Int             @default(1)
  isAdmin         Boolean         @default(false)
  lastLotteryAt   DateTime?       // tracks daily lottery cooldown
  createdAt       DateTime        @default(now())
  updatedAt       DateTime        @updatedAt

  isFund         Boolean       @default(false)
  isHidden       Boolean       @default(false)  // hidden from leaderboards and public listings

  positions        Position[]
  trades           Trade[]
  passwordResets   PasswordReset[]
  managedFunds     FundManager[]
  fund             HedgeFund?
  fundInvestments  FundInvestment[]
  portfolioHistory UserPortfolioHistory[]
  fundApplication  FundApplication?
}

model HedgeFund {
  id                String        @id @default(cuid())
  name              String        @unique
  slug              String        @unique  // lowercase, URL-safe
  userId            String        @unique  // shadow User account that holds positions/trades/balance
  user              User          @relation(fields: [userId], references: [id])
  sharesOutstanding Float         @default(0)  // total fund shares currently in circulation
  createdAt         DateTime      @default(now())

  managers    FundManager[]
  investments FundInvestment[]
  navHistory  FundNavHistory[]
  trades      Trade[]

  @@index([slug])
}

model FundInvestment {
  id            String    @id @default(cuid())
  fundId        String
  fund          HedgeFund @relation(fields: [fundId], references: [id], onDelete: Cascade)
  userId        String
  user          User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  shares        Float     // fund shares held by this investor
  avgNavAtBuy   Float     // NAV per share at time of purchase (for display only)
  createdAt     DateTime  @default(now())
  updatedAt     DateTime  @updatedAt

  @@unique([fundId, userId])
  @@index([userId])
}

model FundManager {
  id      String    @id @default(cuid())
  fundId  String
  fund    HedgeFund @relation(fields: [fundId], references: [id], onDelete: Cascade)
  userId  String
  user    User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  addedAt DateTime  @default(now())

  @@unique([fundId, userId])
}

model PasswordReset {
  id        String   @id @default(cuid())
  token     String   @unique @default(uuid())
  userId    String
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  expiresAt DateTime
  used      Boolean  @default(false)
  createdAt DateTime @default(now())

  @@index([token])
}

model Hashtag {
  id           String         @id @default(cuid())
  tag          String         @unique // lowercase, no #
  displayTag   String         // original case as entered
  currentPrice Float          @default(0.25)
  isActive     Boolean        @default(true)
  isBanned     Boolean        @default(false)
  // Consecutive zero-result count (informational)
  zeroCount    Int            @default(0)
  // Earliest time this hashtag can be deactivated (set on research + when last position closes)
  activeUntil  DateTime?
  lastUpdated  DateTime       @default(now())
  createdAt    DateTime       @default(now())

  priceHistory    PriceHistory[]
  positions       Position[]
  trades          Trade[]
  relatedFrom     RelatedHashtag[] @relation("RelatedFrom")
  relatedTo       RelatedHashtag[] @relation("RelatedTo")

  @@index([isActive, lastUpdated])
}

model RelatedHashtag {
  id           String  @id @default(cuid())
  hashtagId    String
  hashtag      Hashtag @relation("RelatedFrom", fields: [hashtagId], references: [id], onDelete: Cascade)
  relatedTag   String  // lowercase tag name (may not yet be in Hashtag table)
  relatedId    String? // set if the related hashtag exists in the DB
  related      Hashtag? @relation("RelatedTo", fields: [relatedId], references: [id], onDelete: SetNull)
  coOccurrences Int    @default(1)
  updatedAt    DateTime @updatedAt

  @@unique([hashtagId, relatedTag])
  @@index([hashtagId, coOccurrences])
}

model PriceHistory {
  id           String   @id @default(cuid())
  hashtagId    String
  hashtag      Hashtag  @relation(fields: [hashtagId], references: [id], onDelete: Cascade)
  price        Float
  postsPerHour Float
  recordedAt   DateTime @default(now())

  @@index([hashtagId, recordedAt])
}

model FundNavHistory {
  id         String    @id @default(cuid())
  fundId     String
  fund       HedgeFund @relation(fields: [fundId], references: [id], onDelete: Cascade)
  nav        Float
  totalValue Float
  recordedAt DateTime  @default(now())

  @@index([fundId, recordedAt])
}

model UserPortfolioHistory {
  id             String   @id @default(cuid())
  userId         String
  user           User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  totalValue     Float
  portfolioValue Float
  recordedAt     DateTime @default(now())

  @@index([userId, recordedAt])
}

model Position {
  id           String       @id @default(cuid())
  userId       String
  user         User         @relation(fields: [userId], references: [id], onDelete: Cascade)
  hashtagId    String
  hashtag      Hashtag      @relation(fields: [hashtagId], references: [id])
  shares       Float        @default(0)
  positionType PositionType
  avgBuyPrice  Float
  createdAt    DateTime     @default(now())
  updatedAt    DateTime     @updatedAt

  @@unique([userId, hashtagId, positionType])
  @@index([userId])
  @@index([hashtagId])
}

model Trade {
  id        String    @id @default(cuid())
  userId    String
  user      User      @relation(fields: [userId], references: [id], onDelete: Cascade)
  hashtagId String?
  hashtag   Hashtag?  @relation(fields: [hashtagId], references: [id])
  fundId    String?
  fund      HedgeFund? @relation(fields: [fundId], references: [id], onDelete: SetNull)
  type      TradeType
  shares    Float
  price     Float     // price per share at time of trade (or win amount for LOTTERY_WIN)
  total     Float     // cost/proceeds of the trade
  profit    Float     @default(0) // realized P&L (for SELL trades and LOTTERY_WIN)
  createdAt DateTime  @default(now())

  @@index([userId])
  @@index([hashtagId])
  @@index([fundId])
  @@index([createdAt])
}

enum PositionType {
  LONG
  SHORT
}

enum TradeType {
  BUY_LONG
  SELL_LONG
  BUY_SHORT
  SELL_SHORT
  LOTTERY_WIN
  LIQUIDATE_LONG
  LIQUIDATE_SHORT
  DONATION      // keepHistory reset: user was in the green — donated their portfolio
  BANKRUPTCY    // keepHistory reset: user was in the red — debts cleared
  ACCOUNT_OPEN  // keepHistory reset: new $2000 account opening entry
  FUND_INVEST   // invested cash into a hedge fund
  FUND_REDEEM   // redeemed shares from a hedge fund
}

model FundApplication {
  id        String   @id @default(cuid())
  userId    String   @unique
  user      User     @relation(fields: [userId], references: [id], onDelete: Cascade)
  fundName  String
  reason    String
  createdAt DateTime @default(now())
}