use crate::http::context::{AppContext, OpenApiResult, bad_request};
use crate::io::fs;
use crate::llm::chat;
use poem_openapi::{Object, OpenApi, param::Query, payload::Json};
use serde::Deserialize;
use std::sync::Arc;

#[derive(Deserialize, Object)]
struct ModelPayload {
    model: String,
}

pub struct ModelApi {
    pub ctx: Arc<AppContext>,
}

#[OpenApi]
impl ModelApi {
    #[oai(path = "/model", method = "get")]
    async fn get_model_preference(&self) -> OpenApiResult<Json<Option<String>>> {
        let result = fs::get_model_preference(self.ctx.store.as_ref()).map_err(bad_request)?;
        Ok(Json(result))
    }

    #[oai(path = "/model", method = "post")]
    async fn set_model_preference(&self, payload: Json<ModelPayload>) -> OpenApiResult<Json<bool>> {
        fs::set_model_preference(payload.0.model, self.ctx.store.as_ref()).map_err(bad_request)?;
        Ok(Json(true))
    }

    #[oai(path = "/ollama/models", method = "get")]
    async fn get_ollama_models(
        &self,
        base_url: Query<Option<String>>,
    ) -> OpenApiResult<Json<Vec<String>>> {
        let models = chat::get_ollama_models(base_url.0)
            .await
            .map_err(bad_request)?;
        Ok(Json(models))
    }
}