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rules.yaml
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rules.yaml
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functions:
- allowCreate(): next.exists() && !prev.exists()
- allowUpdate(): next.exists()
- allowIncrement(): next.exists() && next.val() == prev.val() + 1
- ifGameExists(): root.games.$game_id.exists()
- ifTurnExists(): root.boards.$game_id.turn_history.$turn_number.exists()
- ifIsCurrentTurn(): root.games.$game_id.turn.turn_number.val() + '' == $turn_number
- ifIsNextTurn(): (root.games.$game_id.turn.turn_number.val() + 1) + '' == $turn_number
- ifIsNextBoard(): (root.games.$game_id.turn.board_number.val() + 1) + '' == $board_number
- ifIsFirstBoard(): $board_number == "0"
schema:
definitions:
board:
type: object
properties:
segments:
# TODO(rjhacks): specify what a segment is in more detail.
type: object
towers:
# TODO(rjhacks): specify what a tower is in more detail.
type: object
dead_points:
# TODO(rjhacks): specify what a dead point is in more detail.
type: object
required: [segments]
additionalProperties: false
player:
type: object
properties:
name:
type: string
home_segment:
# TODO(rjhacks): specify what a segment is in more detail.
type: object
required: [name]
additionalProperties: false
type: object
properties:
games:
type: object
$game_id:
type: object
properties:
turn:
type: object
properties:
turn_number:
type: number
board_number:
type: number
boards_within_turn:
type: number
rules_version:
type: string
players:
type: object
~$player_id: {$ref: "#/definitions/player"}
required: [turn]
additionalProperties: false
boards: # Stored outside 'games' so we can get all game info without getting all the boards.
type: object
$game_id:
type: object
properties:
turn_history:
type: object
$turn_number:
type: object
properties:
board_history:
type: object
$board_number: {$ref: "#/definitions/board"}
additionalProperties: false
additionalProperties: false
access:
- location: "/"
read: false
write: false
- location: "/games/$game_id/"
read: ifGameExists() # Players can only access games whose game ID they know.
write: allowCreate() # Only create is allowed, so a game, once created, stays created.
#- location: "/games/$game_id/moves"
# We can only increment "moves" if the matching board is already added to the history.
# write: allowIncrement() && ifBoardExists() # Value must always increase by exactly 1.
- location: "/games/$game_id/turn"
write: ifGameExists()
- location: "/boards/$game_id/"
read: ifGameExists()
- location: "/boards/$game_id/turn_history/$turn_number/board_history/$board_number"
write: ifGameExists() && ((ifIsNextTurn() && ifIsFirstBoard()) || (ifIsCurrentTurn() && ifIsNextBoard()))