HKSingleParty/99_references/dbml_examples/poker.dbml

// A group registered with the service
Table groups {
  id int [pk]
  name varchar [unique]
  active boolean [default: true]
  paid_through date [null]
  created_utc datetime [default: 'now()']
}

Table payment_types {
  id int [pk]
  group_id int [ref: > groups.id]
  stripe_token varchar
  created_utc datetime [default: 'now()']
}

Table payments {
  id int [pk]
  payment_type_id int [ref: > payment_types.id]
  amount int
  created_utc datetime [default: 'now()']
}

// Enumerate possible roles here: admin, player, etc
Table roles {
  id int [pk]
  name varchar
}

// A user of the service
Table users {
  id int [pk]
  role_id int [ref: > roles.id]
  group_id int [ref: > groups.id]
  email varchar
  display_name varchar [null]
  password varchar
  active boolean [default: true]
  created_utc datetime [default: 'now()']
}

// Buy-ins and cash-outs
Table transactions {
  id int [pk]
  user_id int [ref: > users.id]
  amount int
  created_utc datetime [default: 'now()']
}

// ========= END ADMIN DATA | BEGIN POKER DATA =========

Table tables {
  id int [pk]
  group_id int [ref: > groups.id]
  name varchar  // Currently a random string, remove?
  seats int [note: "number of seats, max players allowed"]
  created_utc datetime [default: 'now()']
}

// Persistent in-game player data. The player's session.
Table players {
  id int [pk]
  user_id int [ref: > users.id]
  table_id int [ref: > tables.id]
  stack int [default: 0]   // Amount of money available to bet
  sitting_out boolean [default: false]
  seat int
  created_utc datetime [default: 'now()']
}

// Mark user as having an active play session
Table players_active {
  id int [pk]
  user_id int [ref: > users.id, unique]
  player_id int [ref: > players.id]
}

// TODO - Should this live in DB or in server code?
Enum states {
  OPEN
  CLOSED
  VOID
}

Table hands {
  id int [pk]
  table_id int [ref: > tables.id]
  dealer_id int [ref: > players.id]
  next_id int [ref: > players.id]
  rounds int [note: "Number of betting rounds per hand (e.g. 4 for NLHE: preflop, flop, turn river)"]
  state states
  created_utc datetime [default: 'now()']
}

Table hands_active {
  id int [pk]
  table_id int [ref: > tables.id]
  hand_id int [ref: > hands.id]
}

// TODO - Need some way to represent a stack of pots to be resolved
Table pots {
  id int [pk]
  hand_id int [ref: > hands.id]
  amount int
  created_utc datetime [default: 'now()']
}

Table betting_rounds {
  id int [pk]
  hand_id int [ref: > hands.id]
  round_num int
  name varchar [note: "e.g. preflop, flop, turn, etc"]  // Might not need this
  bet int [note: "The highest current bet for the round. The amount that must be matched."]
  bettor int [ref: > players.id, note: "The player who played the lead bet"]
  state states
  created_utc datetime [default: 'now()']
}

Table betting_rounds_active {
  id int [pk]
  betting_round_id int [ref: > betting_rounds.id]
  hand_id int [ref: > hands.id]
}

Table bets {
  id int [pk]
  player_id int [ref: > players.id]
  betting_round_id int [ref: > betting_rounds.id]
  amount int
  created_utc datetime [default: 'now()']
}

Table holdings {
  id int [pk]
  player_id int [ref: > players.id, null]
  hand_id int [ref: > hands.id]
  is_board boolean [default: False] // Must be true if player_id is False
  active boolean [default: True]  // Set to False if hand folded
  created_utc datetime [default: 'now()']
}

// Enumerate all cards
Table cards {
  id int [pk]
  code int  // The deuces code for this card
}

// M2M relationship table, shows which cards a player had
Table holdings_to_cards {
  holdings_id int [pk, ref: > holdings.id]
  cards_id int [pk, ref: > cards.id]
  exposed boolean [default: False]  // Set true for face-up cards
}

Enum action_types {
  BLIND
  FOLD
  CHECK
  BET
}

Table actions {
  id int [pk]
  holding_id int [ref: > holdings.id] // Blind actions occur before player sees cards, but holdings record will already exist
  type action_types
  created_utc datetime [default: 'now()']
}