//! 错误类型定义

use std::fmt;

/// 错误类型
#[derive(Debug, Clone)]
pub enum Error {
    /// 验证器未找到
    ValidatorNotFound(String),
    /// 模型未找到
    ModelNotFound(String),
    /// 规则错误
    RuleError(String),
    /// 验证失败
    ValidationFailed(String),
    /// IO错误
    Io(String),
    /// 序列化错误
    Serialization(String),
    /// 其他错误
    Other(String),
}

impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            Self::ValidatorNotFound(msg) => write!(f, "验证器未找到: {}", msg),
            Self::ModelNotFound(msg) => write!(f, "模型未找到: {}", msg),
            Self::RuleError(msg) => write!(f, "规则错误: {}", msg),
            Self::ValidationFailed(msg) => write!(f, "验证失败: {}", msg),
            Self::Io(msg) => write!(f, "IO错误: {}", msg),
            Self::Serialization(msg) => write!(f, "序列化错误: {}", msg),
            Self::Other(msg) => write!(f, "错误: {}", msg),
        }
    }
}

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

impl From<std::io::Error> for Error {
    fn from(err: std::io::Error) -> Self {
        Self::Io(err.to_string())
    }
}

impl From<serde_json::Error> for Error {
    fn from(err: serde_json::Error) -> Self {
        Self::Serialization(err.to_string())
    }
}

/// Result类型别名
pub type Result<T> = std::result::Result<T, Error>;