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use crate::{Response, StatusCode};
use std::backtrace::Backtrace;
use std::io;
use thiserror::Error;

/// BoxedError
pub type BoxedError = Box<dyn std::error::Error + Send + Sync>;

/// SilentError is the error type for the `silent` library.
#[derive(Error, Debug)]
pub enum SilentError {
    /// IO 错误
    #[error("io error")]
    IOError(#[from] io::Error),
    /// IO 错误
    #[error("io error")]
    TungsteniteError(#[from] tokio_tungstenite::tungstenite::Error),
    /// 反序列化 错误
    #[error("serde_json error `{0}`")]
    SerdeJsonError(#[from] serde_json::Error),
    /// 反序列化 错误
    #[error("serde de error `{0}`")]
    SerdeDeError(#[from] serde::de::value::Error),
    /// Hyper 错误
    #[error("the data for key `{0}` is not available")]
    HyperError(#[from] hyper::Error),
    /// 上传文件读取 错误
    #[error("upload file read error `{0}`")]
    FileEmpty(#[from] multer::Error),
    /// Body为空 错误
    #[error("body is empty")]
    BodyEmpty,
    /// Json为空 错误
    #[error("json is empty")]
    JsonEmpty,
    /// Json为空 错误
    #[error("content-type is error")]
    ContentTypeError,
    /// Params为空 错误
    #[error("params is empty")]
    ParamsEmpty,
    /// Params为空 错误
    #[error("params not found")]
    ParamsNotFound,
    /// websocket错误
    #[error("websocket error: {0}")]
    WsError(String),
    /// 业务错误
    #[error("business error: {msg} ({code})")]
    BusinessError {
        /// 错误码
        code: StatusCode,
        /// 错误信息
        msg: String,
    },
}

pub type SilentResult<T> = Result<T, SilentError>;

impl SilentError {
    pub fn business_error(code: StatusCode, msg: String) -> Self {
        Self::BusinessError { code, msg }
    }
    pub fn status_code(&self) -> StatusCode {
        match self {
            Self::IOError(_) => StatusCode::INTERNAL_SERVER_ERROR,
            Self::TungsteniteError(_) => StatusCode::INTERNAL_SERVER_ERROR,
            Self::SerdeJsonError(_) => StatusCode::INTERNAL_SERVER_ERROR,
            Self::SerdeDeError(_) => StatusCode::INTERNAL_SERVER_ERROR,
            Self::HyperError(_) => StatusCode::INTERNAL_SERVER_ERROR,
            Self::FileEmpty(_) => StatusCode::INTERNAL_SERVER_ERROR,
            Self::BodyEmpty => StatusCode::INTERNAL_SERVER_ERROR,
            Self::JsonEmpty => StatusCode::INTERNAL_SERVER_ERROR,
            Self::ContentTypeError => StatusCode::INTERNAL_SERVER_ERROR,
            Self::ParamsEmpty => StatusCode::INTERNAL_SERVER_ERROR,
            Self::ParamsNotFound => StatusCode::INTERNAL_SERVER_ERROR,
            Self::WsError(_) => StatusCode::INTERNAL_SERVER_ERROR,
            Self::BusinessError { code, .. } => *code,
        }
    }
    pub fn trace(&self) -> Backtrace {
        Backtrace::capture()
    }
}

impl From<SilentError> for Response {
    fn from(value: SilentError) -> Self {
        let mut res = Response::empty();
        res.set_status(value.status_code());
        res.set_body(value.to_string().into());
        res
    }
}