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use crate::{
    policies::{Policy, PolicyResult},
    Context, Request, TransportOptions,
};
use async_trait::async_trait;
use std::sync::Arc;
use tracing::debug;

#[derive(Debug, Clone)]
pub struct TransportPolicy {
    pub(crate) transport_options: TransportOptions,
}

impl TransportPolicy {
    pub fn new(transport_options: TransportOptions) -> Self {
        Self { transport_options }
    }
}

#[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
#[cfg_attr(not(target_arch = "wasm32"), async_trait)]
impl Policy for TransportPolicy {
    async fn send(
        &self,
        ctx: &Context,
        request: &mut Request,
        next: &[Arc<dyn Policy>],
    ) -> PolicyResult {
        // there must be no more policies
        assert_eq!(0, next.len());

        debug!("the following request will be passed to the transport policy: {request:#?}");
        let response = { self.transport_options.send(ctx, request) };

        response.await
    }
}