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mod type_state_item;
mod type_state_list;

use self::{type_state_item::TypeStateItem, type_state_list::TypeStateList};
use super::Operation;
use quote::format_ident;
use syn::Ident;

pub struct OperationBuilder<'a> {
    operation: &'a Operation<'a>,
    identifier: Ident,
    type_state: TypeStateList,
}

impl<'a> OperationBuilder<'a> {
    pub fn new(operation: &'a Operation<'a>) -> Self {
        Self {
            operation,
            identifier: format_ident!("{}Builder", operation.name()),
            type_state: Self::create_type_state(operation),
        }
    }

    pub fn operation(&self) -> &Operation {
        self.operation
    }

    pub fn identifier(&self) -> &Ident {
        &self.identifier
    }

    pub fn type_state(&self) -> &TypeStateList {
        &self.type_state
    }

    fn create_type_state(operation: &Operation) -> TypeStateList {
        TypeStateList::new(
            operation
                .required_fields()
                .enumerate()
                .map(|(index, field)| TypeStateItem::new(index, field.name().to_string()))
                .collect(),
        )
    }
}