//!
//!

use beteran_protobuf_rust as bpr;
use prost::Message;
use serde::{Deserialize, Serialize};
use std::fmt;

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Parse {
  pub message: String,
}

impl fmt::Display for Parse {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "parse error: {}", self.message)
  }
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct InvalidRequest {
  pub message: String,
}

impl fmt::Display for InvalidRequest {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "invalid request error: {}", self.message)
  }
}

///
#[derive(Debug, Clone, Copy, PartialEq, Serialize, Deserialize)]
pub enum InvalidParamsType {
  None,
  DateTime,
  Decimal,
  EqualsTo,
  Float,
  Integer,
  Range,
  RegEx,
  Required,
  StringLength,
  Url,
}

impl fmt::Display for InvalidParamsType {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    match self {
      InvalidParamsType::None => {
        write!(f, "None")
      }
      InvalidParamsType::DateTime => {
        write!(f, "DateTime error")
      }
      InvalidParamsType::Decimal => {
        write!(f, "Decimal error")
      }
      InvalidParamsType::EqualsTo => {
        write!(f, "EqualsTo error")
      }
      InvalidParamsType::Float => {
        write!(f, "Float error")
      }
      InvalidParamsType::Integer => {
        write!(f, "Integer error")
      }
      InvalidParamsType::Range => {
        write!(f, "Range error")
      }
      InvalidParamsType::RegEx => {
        write!(f, "RegEx error")
      }
      InvalidParamsType::Required => {
        write!(f, "Required error")
      }
      InvalidParamsType::StringLength => {
        write!(f, "String Length error")
      }
      InvalidParamsType::Url => {
        write!(f, "Url error")
      }
    }
  }
}

impl From<InvalidParamsType> for bpr::protobuf::rpc::InvalidParamsType {
  fn from(t: InvalidParamsType) -> Self {
    match t {
      InvalidParamsType::None => bpr::protobuf::rpc::InvalidParamsType::None,
      InvalidParamsType::DateTime => bpr::protobuf::rpc::InvalidParamsType::DateTime,
      InvalidParamsType::Decimal => bpr::protobuf::rpc::InvalidParamsType::Decimal,
      InvalidParamsType::EqualsTo => bpr::protobuf::rpc::InvalidParamsType::EqualsTo,
      InvalidParamsType::Float => bpr::protobuf::rpc::InvalidParamsType::Float,
      InvalidParamsType::Integer => bpr::protobuf::rpc::InvalidParamsType::Integer,
      InvalidParamsType::Range => bpr::protobuf::rpc::InvalidParamsType::Range,
      InvalidParamsType::RegEx => bpr::protobuf::rpc::InvalidParamsType::RegEx,
      InvalidParamsType::Required => bpr::protobuf::rpc::InvalidParamsType::Required,
      InvalidParamsType::StringLength => bpr::protobuf::rpc::InvalidParamsType::StringLength,
      InvalidParamsType::Url => bpr::protobuf::rpc::InvalidParamsType::Url,
    }
  }
}

impl From<bpr::protobuf::rpc::InvalidParamsType> for InvalidParamsType {
  fn from(t: bpr::protobuf::rpc::InvalidParamsType) -> Self {
    match t {
      bpr::protobuf::rpc::InvalidParamsType::None => InvalidParamsType::None,
      bpr::protobuf::rpc::InvalidParamsType::DateTime => InvalidParamsType::DateTime,
      bpr::protobuf::rpc::InvalidParamsType::Decimal => InvalidParamsType::Decimal,
      bpr::protobuf::rpc::InvalidParamsType::EqualsTo => InvalidParamsType::EqualsTo,
      bpr::protobuf::rpc::InvalidParamsType::Float => InvalidParamsType::Float,
      bpr::protobuf::rpc::InvalidParamsType::Integer => InvalidParamsType::Integer,
      bpr::protobuf::rpc::InvalidParamsType::Range => InvalidParamsType::Range,
      bpr::protobuf::rpc::InvalidParamsType::RegEx => InvalidParamsType::RegEx,
      bpr::protobuf::rpc::InvalidParamsType::Required => InvalidParamsType::Required,
      bpr::protobuf::rpc::InvalidParamsType::StringLength => InvalidParamsType::StringLength,
      bpr::protobuf::rpc::InvalidParamsType::Url => InvalidParamsType::Url,
    }
  }
}

impl From<InvalidParamsType> for i32 {
  fn from(s: InvalidParamsType) -> Self {
    match s {
      InvalidParamsType::DateTime => InvalidParamsType::DateTime as i32,
      InvalidParamsType::Decimal => InvalidParamsType::Decimal as i32,
      InvalidParamsType::EqualsTo => InvalidParamsType::EqualsTo as i32,
      InvalidParamsType::Float => InvalidParamsType::Float as i32,
      InvalidParamsType::Integer => InvalidParamsType::Integer as i32,
      InvalidParamsType::Range => InvalidParamsType::Range as i32,
      InvalidParamsType::RegEx => InvalidParamsType::RegEx as i32,
      InvalidParamsType::Required => InvalidParamsType::Required as i32,
      InvalidParamsType::StringLength => InvalidParamsType::StringLength as i32,
      InvalidParamsType::Url => InvalidParamsType::Url as i32,
      _ => 0,
    }
  }
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct InvalidParamsDetail {
  pub location: String,
  pub param: String,
  pub value: String,
  pub error_type: InvalidParamsType,
  pub message: String,
}

impl fmt::Display for InvalidParamsDetail {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "Invalid Params Detail error, location: {}, param: {}, value: {}, error_type: {}, message: {}", self.location, self.param, self.value, self.error_type, self.message)
  }
}

impl From<&InvalidParamsDetail> for bpr::protobuf::rpc::InvalidParamsDetail {
  fn from(d: &InvalidParamsDetail) -> Self {
    bpr::protobuf::rpc::InvalidParamsDetail {
      location: d.location.clone(),
      param: d.param.clone(),
      value: d.value.clone(),
      error_type: d.error_type as i32,
      message: d.message.clone(),
    }
  }
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct InvalidParams {
  pub message: String,
  pub detail: InvalidParamsDetail,
}

impl fmt::Display for InvalidParams {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(
      f,
      "Invalid Params error, message: {}, detail: {:?}",
      self.message, self.detail
    )
  }
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Internal {
  pub message: String,
}

impl fmt::Display for Internal {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "Internal error, message: {}", self.message)
  }
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Server {
  pub message: String,
}

impl fmt::Display for Server {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    write!(f, "Server error, message: {}", self.message)
  }
}

///
#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub enum Error {
  ///
  Parse(Parse),
  ///
  InvalidRequest(InvalidRequest),
  ///
  InvalidParams(InvalidParams),
  ///
  Internal(Internal),
  ///
  Server(Server),
}

impl std::error::Error for Error {}

impl fmt::Display for Error {
  fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
    match self {
      Error::Parse(e) => {
        write!(f, "Parse error: {}", e)
      }
      Error::InvalidRequest(e) => {
        write!(f, "InvalidRequest error: {}", e)
      }
      Error::InvalidParams(e) => {
        write!(f, "InvalidParams error: {}", e)
      }
      Error::Internal(e) => {
        write!(f, "Internal error: {}", e)
      }
      Error::Server(e) => {
        write!(f, "Server error: {}", e)
      }
    }
  }
}

impl From<Error> for bpr::protobuf::rpc::Error {
  fn from(err: Error) -> Self {
    match err {
      Error::Parse(e) => bpr::protobuf::rpc::Error {
        code: -32700,
        message: e.message,
        data: None,
      },
      Error::InvalidRequest(e) => bpr::protobuf::rpc::Error {
        code: -32600,
        message: e.message,
        data: None,
      },
      Error::InvalidParams(e) => bpr::protobuf::rpc::Error {
        code: -32602,
        message: e.message.clone(),
        data: Some(bpr::protobuf::rpc::InvalidParamsDetail::from(&e.detail).encode_to_vec()),
      },
      Error::Internal(e) => bpr::protobuf::rpc::Error {
        code: -32603,
        message: e.message,
        data: None,
      },
      Error::Server(e) => bpr::protobuf::rpc::Error {
        code: -32603,
        message: e.message,
        data: None,
      },
    }
  }
}

// 1. header parsing (-32700)
// "message": "header could not be resolved.",
// "detail": [
//     {
//     "location": "header",
//     "msg": "must be String"
//     }
// ]

// 2. data from header (-32700)
// "message": "'client'(header) must be String, input 'name': 123",
// "detail": [
//     {
//     "location": "header",
//     "param": "client",
//     "value": 123,
//     "error": "TypeError",
//     "msg": "must be String"
//     }
// ]

// 3. request parsing (-32600)
// "message": "request could not be resolved.",
// "detail": [
//     {
//     "location": "request",
//     "msg": "must be String"
//     }
// ]

// 4. data from request (-32602)
// "message": "'client'(request) must be String, input 'name': 123",
// "detail": [
//     {
//     "location": "request",
//     "param": "client",
//     "value": 123,
//     "error": "TypeError",
//     "msg": "must be String"
//     }
// ]

// 5. crud (-32603)
// "message": "Internal error",

// 6. return

// -32700
//    Parse error	Invalid JSON was received by the server.
//    An error occurred on the server while parsing the JSON text.
// -32600
//    Invalid Request	The JSON sent is not a valid Request object.
// -32601
//    Method not found	The method does not exist / is not available.
// -32602
//    Invalid params	Invalid method parameter(s).
// -32603
//    Internal error	Internal JSON-RPC error.
// -32000 to -32099
//    Server error	Reserved for implementation-defined server-errors.

// 400 Bad Request
// 클라이언트의 요청이 유효하지 않아 더 이상 작업을 진행하지 않는 경우 (필수 여부, 유효 여부, 범위, 패턴 ...)
// "message": "'name'(body) must be String, input 'name': 123",
// "detail": [
//     {
//     "location": "body",
//     "param": "name",
//     "value": 123,
//     "error": "TypeError",
//     "msg": "must be String"
//     }
// ]

// 401 Unauthorized
// 클라이언트가 권한이 없기 때문에 작업을 진행할 수 없는 경우

// 403 Forbidden
// 클라이언트가 권한이 없기 때문에 작업을 진행할 수 없는 경우

// 404 Not Found
// 클라이언트가 요청한 자원이 존재하지 않다.

// 409 Conflict
// 클라이언트의 요청이 서버의 상태와 충돌이 발생한 경우

// 429 Too Many Requests
// 클라이언트가 일정 시간 동안 너무 많은 요청을 보낸 경우

// 500 Internal Server Error

// 501 Not Implemented
// 503 Service Unavailable