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//! This module contains filters pertaining to a single player.
//!
//! Additionally, it provides methods to lift a player filter to a log filter with [`any`][any] and
//! [`all`][all].
use super::{
super::{guilds, LogResult, Player, SearchField},
log::LogFilter,
Filter, Inclusion,
};
use evtclib::raw::parser::PartialEvtc;
use evtclib::{Agent, AgentName};
use regex::Regex;
/// Filter type for filters that operate on single players.
pub trait PlayerFilter = Filter<Agent, Player>;
/// Struct that lifts a [`PlayerFilter`](traitalias.PlayerFilter.html) to a
/// [`LogFilter`](../log/traitalias.LogFilter.html) by requiring all players to match.
///
/// This struct will short-circuit once the result is known.
#[derive(Debug)]
struct AllPlayers(Box<dyn PlayerFilter>);
impl Filter<PartialEvtc, LogResult> for AllPlayers {
fn filter_early(&self, partial_evtc: &PartialEvtc) -> Inclusion {
let mut result = Inclusion::Include;
for agent in &partial_evtc.agents {
if !agent.is_player() {
continue;
}
let agent = Agent::from_raw(agent);
if let Ok(agent) = agent {
result = result & self.0.filter_early(&agent);
} else {
result = result & Inclusion::Unknown;
}
// Short circuit
if result == Inclusion::Exclude {
return result;
}
}
result
}
fn filter(&self, log: &LogResult) -> bool {
log.players.iter().all(|p| self.0.filter(p))
}
}
/// Construct a filter that requires the given `player_filter` to match for all players in a log.
pub fn all(player_filter: Box<dyn PlayerFilter>) -> Box<dyn LogFilter> {
Box::new(AllPlayers(player_filter))
}
/// Construct a filter that requires the given `player_filter` to match for any player in a log.
pub fn any(player_filter: Box<dyn PlayerFilter>) -> Box<dyn LogFilter> {
!all(!player_filter)
}
/// Filter that filters players according to their name.
///
/// The given SearchField determines in which field something should be searched.
#[derive(Debug, Clone)]
struct NameFilter(SearchField, Regex);
impl Filter<Agent, Player> for NameFilter {
fn filter_early(&self, agent: &Agent) -> Inclusion {
if self.0 == SearchField::Guild {
return Inclusion::Unknown;
}
if let AgentName::Player {
ref account_name,
ref character_name,
..
} = agent.name()
{
let field = match self.0 {
SearchField::Account => account_name,
SearchField::Character => character_name,
_ => unreachable!("We already checked for Guild earlier"),
};
self.1.is_match(field).into()
} else {
Inclusion::Unknown
}
}
fn filter(&self, player: &Player) -> bool {
match self.0 {
SearchField::Account => self.1.is_match(&player.account_name),
SearchField::Character => self.1.is_match(&player.character_name),
SearchField::Guild => player
.guild_id
.as_ref()
.and_then(|id| guilds::lookup(id))
.map(|guild| self.1.is_match(guild.tag()) || self.1.is_match(guild.name()))
.unwrap_or(false),
}
}
}
/// Construct a `PlayerFilter` that searches the given `field` with the given `regex`.
pub fn name(field: SearchField, regex: Regex) -> Box<dyn PlayerFilter> {
Box::new(NameFilter(field, regex))
}
/// Construct a `PlayerFilter` that searches the character name with the given `regex`.
pub fn character(regex: Regex) -> Box<dyn PlayerFilter> {
name(SearchField::Character, regex)
}
/// Construct a `PlayerFilter` that searches the account name with the given `regex`.
pub fn account(regex: Regex) -> Box<dyn PlayerFilter> {
name(SearchField::Account, regex)
}
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