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use std::collections::HashSet;
use std::str::FromStr;
use serde;
use serde::Deserialize;
use serde_json::{Value};
use crate::{
Template,
components::{
Flag,
equipment::Equippable
},
errors::{ParseError}
};
#[derive(Debug, Default, PartialEq, Eq, Clone, Hash, Deserialize)]
pub struct ItemId(pub String);
impl FromStr for ItemId {
type Err = ParseError;
fn from_str(s: &str) -> Result<Self, Self::Err> {
Ok(Self(s.to_string()))
}
}
#[derive(Debug, Clone)]
pub struct Item {
pub ent: Template,
pub name: String,
pub action: ItemAction
}
#[derive(Debug, Clone, PartialEq)]
pub enum ItemAction {
Eat(i64),
Build(Template, HashSet<Flag>, HashSet<Flag>),
Equip(Equippable),
None
}
use ItemAction::{Eat, Build, Equip, None};
impl ItemAction {
pub fn from_json(val: &Value) -> Option<Self> {
let typ = val.get(0)?;
let arg = val.get(1)?;
Some(match typ.as_str()? {
"eat" => Eat(arg.as_i64()?),
"build" => Build(
Template::from_json(arg.get(0)?).ok()?,
arg.get(1)?.as_array()?.iter().map(|v| Flag::from_str(v.as_str()?)).collect::<Option<HashSet<Flag>>>()?,
arg.get(2)?.as_array()?.iter().map(|v| Flag::from_str(v.as_str()?)).collect::<Option<HashSet<Flag>>>()?
),
"none" => None,
"equip" => Equip(Equippable::from_json(arg)?),
_ => {return Option::None}
})
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::hashmap;
use crate::components::equipment::*;
use serde_json::json;
#[test]
fn equip_from_json() {
assert_eq!(
ItemAction::from_json(&json!(["equip", {"slot": "hand", "stats": {"strength": 10}}])),
Some(ItemAction::Equip(Equippable {slot: Slot::Hand, stats: hashmap!(Stat::Strength => 10)}))
);
assert_eq!(
ItemAction::from_json(&json!(["equip", {"slot": "hand", "stats": {"attack": 50}}])),
Option::None
);
}
}
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