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

use crate::ApiError;

#[derive(Serialize, ToSchema)]
#[serde(tag = "status")]
pub enum ErrorResponse {
    #[serde(rename = "fail")]
    Fail {
        #[schema(examples("SomeErrorKind", "NotAuthorized", "Database"))]
        kind: String,
        #[schema(examples("some error text"))]
        message: String,
    },
    #[serde(rename = "error")]
    Error {
        #[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::Fail {
            kind: kind.into(),
            message: message.into(),
        }
    }

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

impl IntoResponse for ErrorResponse {
    fn into_response(self) -> Response {
        (
            match self {
                Self::Fail { .. } => StatusCode::BAD_REQUEST,
                Self::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 {
                kind: e.kind(),
                message: e.into_message(),
            },
            ApiError::Server(e) => Self::Error {
                kind: e.kind(),
                message: e.into_message(),
            },
        }
    }
}