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use async_trait::async_trait;
use crate::context::Context;
use crate::error::Error;
use crate::model::delete_grant_response::DeleteGrantResponse;
use crate::model::error_body::ErrorBody;
use crate::model::errors_body::ErrorsBody;
use crate::model::role::Role;

pub enum GrantError {
    Error400(ErrorsBody),
    Error401(ErrorBody),
    Error404(ErrorBody),
    Error500(ErrorBody),
}

#[async_trait]
pub trait GrantClient {
    async fn get(&self, account_id: &str) -> Result<Vec<Role>, Error<GrantError>>;
    async fn role_get(&self, account_id: &str, role: &Role) -> Result<Role, Error<GrantError>>;
    async fn role_put(&self, account_id: &str, role: &Role) -> Result<Role, Error<GrantError>>;
    async fn role_delete(&self, account_id: &str, role: &Role) -> Result<DeleteGrantResponse, Error<GrantError>>;
}

pub struct GrantClientLive {
    pub context: Context,
}

#[async_trait]
impl GrantClient for GrantClientLive {
    async fn get(&self, account_id: &str) -> Result<Vec<Role>, Error<GrantError>> {
        let mut url = self.context.base_url.clone();
        url.path_segments_mut().unwrap()
            .push("v2")
            .push("accounts")
            .push(account_id)
            .push("grants");

        let mut request = self
            .context
            .client
            .get(url.clone());

        {
            tracing::info!(method="get", endpoint="/v2/accounts/{account_id}/grants", url=url.to_string(), "get");
        }

        if let Some(token) = self.context.bearer_token() {
            request = request.bearer_auth(token);
        }

        let response = request.send().await?;

        let status = response.status().as_u16();
        match status {
            200 => {
                Ok(response.json::<Vec<Role>>().await?)
            }
            400 => {
                let body = response.json::<ErrorsBody>().await?;
                Err(Error::Item(GrantError::Error400(body)))
            }
            401 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error401(body)))
            }
            404 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error404(body)))
            }
            500 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error500(body)))
            }
            _ => Err(Error::unexpected(status, response.bytes().await?)),
        }
    }

    async fn role_get(&self, account_id: &str, role: &Role) -> Result<Role, Error<GrantError>> {
        let mut url = self.context.base_url.clone();
        url.path_segments_mut().unwrap()
            .push("v2")
            .push("accounts")
            .push(account_id)
            .push("grants")
            .push(&role.to_string());

        let mut request = self
            .context
            .client
            .get(url.clone());

        {
            tracing::info!(method="get", endpoint="/v2/accounts/{account_id}/grants/{role}", url=url.to_string(), "role_get");
        }

        if let Some(token) = self.context.bearer_token() {
            request = request.bearer_auth(token);
        }

        let response = request.send().await?;

        let status = response.status().as_u16();
        match status {
            200 => {
                Ok(response.json::<Role>().await?)
            }
            400 => {
                let body = response.json::<ErrorsBody>().await?;
                Err(Error::Item(GrantError::Error400(body)))
            }
            401 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error401(body)))
            }
            404 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error404(body)))
            }
            500 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error500(body)))
            }
            _ => Err(Error::unexpected(status, response.bytes().await?)),
        }
    }

    async fn role_put(&self, account_id: &str, role: &Role) -> Result<Role, Error<GrantError>> {
        let mut url = self.context.base_url.clone();
        url.path_segments_mut().unwrap()
            .push("v2")
            .push("accounts")
            .push(account_id)
            .push("grants")
            .push(&role.to_string());

        let mut request = self
            .context
            .client
            .put(url.clone());

        {
            tracing::info!(method="put", endpoint="/v2/accounts/{account_id}/grants/{role}", url=url.to_string(), "role_put");
        }

        if let Some(token) = self.context.bearer_token() {
            request = request.bearer_auth(token);
        }

        let response = request.send().await?;

        let status = response.status().as_u16();
        match status {
            200 => {
                Ok(response.json::<Role>().await?)
            }
            400 => {
                let body = response.json::<ErrorsBody>().await?;
                Err(Error::Item(GrantError::Error400(body)))
            }
            401 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error401(body)))
            }
            404 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error404(body)))
            }
            500 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error500(body)))
            }
            _ => Err(Error::unexpected(status, response.bytes().await?)),
        }
    }

    async fn role_delete(&self, account_id: &str, role: &Role) -> Result<DeleteGrantResponse, Error<GrantError>> {
        let mut url = self.context.base_url.clone();
        url.path_segments_mut().unwrap()
            .push("v2")
            .push("accounts")
            .push(account_id)
            .push("grants")
            .push(&role.to_string());

        let mut request = self
            .context
            .client
            .delete(url.clone());

        {
            tracing::info!(method="delete", endpoint="/v2/accounts/{account_id}/grants/{role}", url=url.to_string(), "role_delete");
        }

        if let Some(token) = self.context.bearer_token() {
            request = request.bearer_auth(token);
        }

        let response = request.send().await?;

        let status = response.status().as_u16();
        match status {
            200 => {
                Ok(response.json::<DeleteGrantResponse>().await?)
            }
            400 => {
                let body = response.json::<ErrorsBody>().await?;
                Err(Error::Item(GrantError::Error400(body)))
            }
            401 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error401(body)))
            }
            404 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error404(body)))
            }
            500 => {
                let body = response.json::<ErrorBody>().await?;
                Err(Error::Item(GrantError::Error500(body)))
            }
            _ => Err(Error::unexpected(status, response.bytes().await?)),
        }
    }
}