hehe-server 0.0.1

use axum::http::StatusCode;
use axum::response::{IntoResponse, Response};
use axum::Json;
use hehe_agent::AgentError;
use serde::Serialize;
use thiserror::Error;

#[derive(Error, Debug)]
pub enum ServerError {
    #[error("Bad request: {0}")]
    BadRequest(String),

    #[error("Not found: {0}")]
    NotFound(String),

    #[error("Internal error: {0}")]
    Internal(String),

    #[error("Agent error: {0}")]
    Agent(#[from] AgentError),

    #[error("Serialization error: {0}")]
    Serialization(#[from] serde_json::Error),
}

pub type Result<T> = std::result::Result<T, ServerError>;

#[derive(Serialize)]
struct ErrorResponse {
    error: String,
    code: u16,
}

impl IntoResponse for ServerError {
    fn into_response(self) -> Response {
        let (status, message) = match &self {
            ServerError::BadRequest(msg) => (StatusCode::BAD_REQUEST, msg.clone()),
            ServerError::NotFound(msg) => (StatusCode::NOT_FOUND, msg.clone()),
            ServerError::Internal(msg) => (StatusCode::INTERNAL_SERVER_ERROR, msg.clone()),
            ServerError::Agent(e) => (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()),
            ServerError::Serialization(e) => (StatusCode::BAD_REQUEST, e.to_string()),
        };

        let body = Json(ErrorResponse {
            error: message,
            code: status.as_u16(),
        });

        (status, body).into_response()
    }
}

impl ServerError {
    pub fn bad_request(msg: impl Into<String>) -> Self {
        Self::BadRequest(msg.into())
    }

    pub fn not_found(msg: impl Into<String>) -> Self {
        Self::NotFound(msg.into())
    }

    pub fn internal(msg: impl Into<String>) -> Self {
        Self::Internal(msg.into())
    }
}