use super::aiserver::v1::error_details::Error as ErrorType;
use reqwest::StatusCode;
use serde::{Deserialize, Serialize};

#[derive(Deserialize)]
pub struct ChatError {
    error: ErrorBody,
}

#[derive(Deserialize)]
pub struct ErrorBody {
    code: String,
    // message: String, always: Error
    details: Vec<ErrorDetail>,
}

#[derive(Deserialize)]
pub struct ErrorDetail {
    // #[serde(rename = "type")]
    // error_type: String, always: aiserver.v1.ErrorDetails
    debug: ErrorDebug,
    value: String,
}

#[derive(Deserialize)]
pub struct ErrorDebug {
    error: String,
    details: ErrorDetails,
    // #[serde(rename = "isExpected")]
    // is_expected: Option<bool>,
}

#[derive(Deserialize)]
pub struct ErrorDetails {
    title: String,
    detail: String,
    // #[serde(rename = "isRetryable")]
    // is_retryable: Option<bool>,
}

use crate::common::models::{ApiStatus, ErrorResponse as CommonErrorResponse};

impl ChatError {
    pub fn to_error_response(&self) -> ErrorResponse {
        if self.error.details.is_empty() {
            return ErrorResponse {
                status: 500,
                code: "unknown".to_string(),
                error: None,
            };
        }
        ErrorResponse {
            status: self.status_code(),
            code: self.error.code.clone(),
            error: Some(Error {
                message: self.error.details[0].debug.details.title.clone(),
                details: self.error.details[0].debug.details.detail.clone(),
                value: self.error.details[0].value.clone(),
            }),
        }
    }

    pub fn status_code(&self) -> u16 {
        match ErrorType::from_str_name(&self.error.details[0].debug.error) {
            Some(error) => match error {
                ErrorType::Unspecified => 500,
                ErrorType::BadApiKey
                | ErrorType::InvalidAuthId
                | ErrorType::AuthTokenNotFound
                | ErrorType::AuthTokenExpired
                | ErrorType::Unauthorized => 401,
                ErrorType::NotLoggedIn
                | ErrorType::NotHighEnoughPermissions
                | ErrorType::AgentRequiresLogin
                | ErrorType::ProUserOnly
                | ErrorType::TaskNoPermissions => 403,
                ErrorType::NotFound
                | ErrorType::UserNotFound
                | ErrorType::TaskUuidNotFound
                | ErrorType::AgentEngineNotFound
                | ErrorType::GitgraphNotFound
                | ErrorType::FileNotFound => 404,
                ErrorType::FreeUserRateLimitExceeded
                | ErrorType::ProUserRateLimitExceeded
                | ErrorType::OpenaiRateLimitExceeded
                | ErrorType::OpenaiAccountLimitExceeded
                | ErrorType::GenericRateLimitExceeded
                | ErrorType::Gpt4VisionPreviewRateLimit
                | ErrorType::ApiKeyRateLimit => 429,
                ErrorType::BadRequest
                | ErrorType::BadModelName
                | ErrorType::SlashEditFileTooLong
                | ErrorType::FileUnsupported
                | ErrorType::ClaudeImageTooLarge => 400,
                ErrorType::Deprecated
                | ErrorType::FreeUserUsageLimit
                | ErrorType::ProUserUsageLimit
                | ErrorType::ResourceExhausted
                | ErrorType::Openai
                | ErrorType::MaxTokens
                | ErrorType::ApiKeyNotSupported
                | ErrorType::UserAbortedRequest
                | ErrorType::CustomMessage
                | ErrorType::OutdatedClient
                | ErrorType::Debounced
                | ErrorType::RepositoryServiceRepositoryIsNotInitialized => 500,
            },
            None => 500,
        }
    }

    // pub fn is_expected(&self) -> bool {
    //     self.error.details[0].debug.is_expected.unwrap_or_default()
    // }
}

#[derive(Serialize)]
pub struct ErrorResponse {
    pub status: u16,
    pub code: String,
    #[serde(skip_serializing_if = "Option::is_none")]
    pub error: Option<Error>,
}

#[derive(Serialize)]
pub struct Error {
    pub message: String,
    pub details: String,
    pub value: String,
}

impl ErrorResponse {
    // pub fn to_json(&self) -> serde_json::Value {
    //     serde_json::to_value(self).unwrap()
    // }

    pub fn status_code(&self) -> StatusCode {
        StatusCode::from_u16(self.status).unwrap_or(StatusCode::INTERNAL_SERVER_ERROR)
    }

    pub fn native_code(&self) -> String {
        self.code.replace("_", " ")
    }

    pub fn to_common(self) -> CommonErrorResponse {
        CommonErrorResponse {
            status: ApiStatus::Error,
            code: Some(self.status),
            error: self.error.as_ref().map(|error| error.message.clone()).or(Some(self.code.clone())),
            message: self.error.as_ref().map(|error| error.details.clone()),
        }
    }
}

pub enum StreamError {
    ChatError(ChatError),
    DataLengthLessThan5,
    EmptyMessage,
}

impl std::fmt::Display for StreamError {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        match self {
            StreamError::ChatError(error) => write!(f, "{}", error.error.details[0].debug.details.title),
            StreamError::DataLengthLessThan5 => write!(f, "data length less than 5"),
            StreamError::EmptyMessage => write!(f, "empty message"),
        }
    }
}