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use reqwest::Method;

use crate::api::path_combine;
use crate::api::variable::models::{
    VariableCreateRequest, VariableDeleteParams, VariableDeleteResponse, VariableGetParams,
    VariableListParams,
};
use crate::models::variable::Variable;
use crate::{ClientError, NomadClient};

impl NomadClient {
    pub async fn variables_list(
        &self,
        params: &VariableListParams,
    ) -> Result<Vec<Variable>, ClientError> {
        let req = self.request(Method::GET, "/vars").query(&params);
        self.send::<Vec<Variable>>(req).await
    }

    pub async fn variable_get(
        &self,
        var_path: &str,
        params: &VariableGetParams,
    ) -> Result<Variable, ClientError> {
        let req = self
            .request(Method::GET, &path_combine("/var", var_path))
            .query(&params);
        self.send::<Variable>(req).await
    }

    pub async fn variable_create(
        &self,
        var_path: &str,
        req: &VariableCreateRequest,
    ) -> Result<Variable, ClientError> {
        let req = self
            .request(Method::PUT, &path_combine("/var", var_path))
            .json(&req);
        self.send::<Variable>(req).await
    }

    pub async fn variable_delete(
        &self,
        var_path: &str,
        params: &VariableDeleteParams,
    ) -> Result<VariableDeleteResponse, ClientError> {
        let req = self
            .request(Method::DELETE, &path_combine("/var", var_path))
            .query(&params);
        self.send::<VariableDeleteResponse>(req).await
    }
}

pub mod models {
    use std::collections::HashMap;

    use serde::{Deserialize, Serialize};

    #[derive(Debug, Default, Serialize)]
    #[serde(rename_all = "PascalCase")]
    pub struct VariableListParams {
        pub prefix: Option<String>,
        pub next_token: Option<String>,
        pub per_page: Option<u64>,
        pub filter: Option<String>,
        pub namespace: Option<String>,
    }

    #[derive(Debug, Default, Serialize)]
    #[serde(rename_all = "PascalCase")]
    pub struct VariableGetParams {
        pub namespace: Option<String>,
    }

    #[derive(Debug, Default, Serialize)]
    #[serde(rename_all = "PascalCase")]
    pub struct VariableCreateRequest {
        pub namespace: String,
        pub path: String,
        pub items: HashMap<String, String>,
    }

    #[derive(Debug, Default, Serialize)]
    #[serde(rename_all = "PascalCase")]
    pub struct VariableDeleteParams {
        pub namespace: Option<String>,
    }

    #[derive(Debug, Default, Deserialize)]
    #[serde(rename_all = "PascalCase")]
    pub struct VariableDeleteResponse {
        pub index: u64,
    }
}