use serde::{Deserialize, Serialize};

use mizan_rust::{MizanClient, MizanError};

{% if !type_imports.is_empty() -%}
use crate::types::{ {{- type_imports|join(", ") -}} };

{% endif -%}
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct {{ pascal }}ContextData {
{% for field in data_fields -%}
{% if field.has_rename %}    #[serde(rename = "{{ field.wire_name }}")]
{% endif %}    pub {{ field.ident }}: {% if field.optional %}Option<{{ field.ty }}>{% else %}{{ field.ty }}{% endif %},
{% endfor -%}
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct {{ pascal }}ContextParams {
{% for p in params -%}
{% if p.has_rename %}    #[serde(rename = "{{ p.wire_name }}")]
{% endif %}    pub {{ p.ident }}: {% if p.optional %}Option<{{ p.ty }}>{% else %}{{ p.ty }}{% endif %},
{% endfor -%}
}

pub async fn fetch_{{ snake }}_context(
    client: &MizanClient,
    params: &{{ pascal }}ContextParams,
) -> Result<{{ pascal }}ContextData, MizanError> {
    let params_value = serde_json::to_value(params)
        .map_err(|e| MizanError::transport(format!("encode {{ ctx_name }} context params: {e}")))?;
    let raw = client.fetch_context("{{ ctx_name }}", &params_value).await?;
    serde_json::from_value(raw)
        .map_err(|e| MizanError::transport(format!("decode {{ ctx_name }} context: {e}")))
}