use std::sync::Arc;

use crate::dynamic_data::script_handling::script::{Script, ScriptContainer};
use crate::dynamic_data::script_handling::script_set::ScriptSet;
use crate::{PkmnResult, StringKey};

/// This trait adds a bunch of helper functions to deal with volatile scripts on a struct.
pub trait VolatileScriptsOwner {
    /// Return the [`ScriptSet`] that are our volatile scripts.
    fn volatile_scripts(&self) -> &Arc<ScriptSet>;
    /// Loads a volatile script by name.
    fn load_volatile_script(&self, key: &StringKey) -> PkmnResult<Option<Arc<dyn Script>>>;

    /// Check if a volatile script with given name exists.
    fn has_volatile_script(&self, key: &StringKey) -> bool {
        self.volatile_scripts().has(key)
    }

    /// Gets a volatile script by name.
    fn get_volatile_script(&self, key: &StringKey) -> Option<ScriptContainer> {
        self.volatile_scripts().get(key)
    }

    /// Adds a volatile script by name.
    fn add_volatile_script(&self, key: &StringKey) -> PkmnResult<Option<ScriptContainer>> {
        self.volatile_scripts()
            .stack_or_add(key, &|| self.load_volatile_script(key))
    }

    /// Adds a volatile script by name.
    fn add_volatile_script_with_script(&self, script: Arc<dyn Script>) -> PkmnResult<Option<ScriptContainer>> {
        self.volatile_scripts()
            .stack_or_add(&script.name().clone(), &|| Ok(Some(script.clone())))
    }

    /// Removes a volatile script by name.
    fn remove_volatile_script(&self, key: &StringKey) {
        self.volatile_scripts().remove(key)
    }
}