class_diagram.plantuml

@startuml
skinparam ClassFontColor automatic
skinparam ClassHeaderBackgroundColor #444
skinparam ClassBackgroundColor #ffffff
skinparam BackgroundColor #777

class User{
id: int
username: str
email: str
date_joied: date
is_active: bool
is_staff: bool
}

class Bot{
id: int
name: str
token: str
user_id: int
}

class Bots_in_match{
id: int
score: int
bot_id: int
match_id: int
}

class Bots_challenged{
id: int
bot_id: int
tournament_id: int
}

class Challenge{
id: int
bot_challenger_id: int
tournament_id: int
}

class Match{
id: int
game_id: str
date: str
tournament_id: int|null
}

class Tournament{
id: int
name: str
matches_num: int
championship_id: int|null
}

class Championship{
id: int
name: str
final_tournament_id: int|null
}

User --> Bot
Bot --> Bots_in_match
Bot --> Bots_challenged
Bot --> Challenge
Bots_challenged --> Challenge
Bots_in_match --> Match
Match --> Tournament
Challenge --> Tournament
Tournament --> Championship
Championship --> Tournament
@enduml