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use super::shared::schema;
use cynic::http::ReqwestExt;
use reqwest::Client;
use crate::api::shared::ApiError;
use cynic::QueryBuilder;
use crate::classes::Class;

#[derive(cynic::QueryVariables, Debug)]
struct SpellcastingAbilityQueryVariables {
    pub index: Option<String>,
}

#[derive(cynic::QueryFragment, Debug)]
#[cynic(graphql_type = "Query", variables = "SpellcastingAbilityQueryVariables")]
struct SpellcastingAbilityQuery {
    #[arguments(index: $index)]
    pub class: Option<ClassSpellCasting>,
}

#[derive(cynic::QueryFragment, Debug)]
#[cynic(graphql_type = "Class")]
struct ClassSpellCasting {
    pub spellcasting: Option<ClassSpellcasting>,
}

#[derive(cynic::QueryFragment, Debug)]
struct ClassSpellcasting {
    #[cynic(rename = "spellcasting_ability")]
    pub spellcasting_ability: AbilityScore,
}

#[derive(cynic::QueryFragment, Debug)]
struct AbilityScore {
    pub index: String,
}

impl Class {
    pub async fn get_spellcasting_ability_index(&self) -> Result<String, ApiError> {
        let op = SpellcastingAbilityQuery::build(SpellcastingAbilityQueryVariables {
            index: Some(self.0.clone())
        });

        let ability_index = Client::new()
            .post("https://www.dnd5eapi.co/graphql")
            .run_graphql(op).await?
            .data.ok_or(ApiError::Schema)?
            .class.ok_or(ApiError::Schema)?
            .spellcasting.ok_or(ApiError::Schema)?
            .spellcasting_ability.index;

        Ok(ability_index)
    }
}