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use axum::{
    http::StatusCode,
    response::{IntoResponse, Response},
};
use serde::Serialize;
use utoipa::ToSchema;

use crate::ApiError;

#[derive(Serialize, ToSchema)]
#[schema(examples("fail or error"))]
enum ErrorStatus {
    #[serde(rename = "fail")]
    Fail,
    #[serde(rename = "error")]
    Error,
}

#[derive(Serialize, ToSchema)]
pub struct ErrorResponse {
    status: ErrorStatus,
    #[schema(examples("SomeErrorKind", "NotAuthorized", "Database"))]
    kind: String,
    #[schema(examples("some error text"))]
    message: String,
}

impl ErrorResponse {
    pub fn fail(kind: impl Into<String>, message: impl Into<String>) -> Self {
        Self {
            status: ErrorStatus::Fail,
            kind: kind.into(),
            message: message.into(),
        }
    }

    pub fn error(kind: impl Into<String>, message: impl Into<String>) -> Self {
        Self {
            status: ErrorStatus::Error,
            kind: kind.into(),
            message: message.into(),
        }
    }
}

impl IntoResponse for ErrorResponse {
    fn into_response(self) -> Response {
        (
            match self.status {
                ErrorStatus::Fail => StatusCode::BAD_REQUEST,
                ErrorStatus::Error => StatusCode::INTERNAL_SERVER_ERROR,
            },
            axum::Json(self),
        )
            .into_response()
    }
}

impl<T> From<T> for ErrorResponse
where
    T: Into<ApiError>,
{
    fn from(value: T) -> Self {
        match value.into() {
            ApiError::Client(e) => Self::fail(e.kind(), e.into_message()),
            ApiError::Server(e) => Self::fail(e.kind(), e.into_message()),
        }
    }
}