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use std::collections::HashMap;
use serde_json::{Value};
use specs::{
Component,
HashMapStorage
};
use crate::{
Template,
exchange::Exchange,
ItemId
};
#[derive(Component, Debug, Clone, PartialEq)]
#[storage(HashMapStorage)]
pub enum Interactable {
Harvest,
Change(Template),
Say(String),
Reply(String),
Exchange(String, HashMap<String, Exchange>)
}
use Interactable::*;
impl Interactable {
pub fn from_json(val: &Value) -> Option<Self> {
let typ = if val.is_string() {val} else {val.get(0)?};
let arg = if val.is_string() {&Value::Null} else {val.get(1)?};
Some(match typ.as_str()? {
"harvest" => Harvest,
"change" => Change(Template::from_json(arg).ok()?),
"say" => Say(arg.as_str()?.to_string()),
"reply" => Reply(arg.as_str()?.to_string()),
"exchange" => Exchange(
arg.get(0)?.as_str()?.to_string(),
arg.get(1)?
.as_object()?
.iter()
.map(|(id, ex)| {
let exchange = Exchange {
cost: ex.get(0)?.as_array()?.iter().map(|i| Some(ItemId(i.as_str()?.to_string()))).collect::<Option<Vec<ItemId>>>()?,
offer: ex.get(1)?.as_array()?.iter().map(|i| Some(ItemId(i.as_str()?.to_string()))).collect::<Option<Vec<ItemId>>>()?
};
Some((id.clone(), exchange))
})
.collect::<Option<HashMap<String, Exchange>>>()?
),
_ => None?
})
}
pub fn accepts_arg(&self, arg: &Option<String>) -> bool {
match self {
Harvest => arg.is_none(),
Change(_) => arg.is_none(),
Say(_) => arg.is_none(),
Reply(_) => arg.is_some(),
Exchange(prefix, _exchanges) => {
if let Some(txt) = arg {
txt.starts_with(prefix)
} else {
true
}
}
}
}
}
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