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use std::error::Error;
use std::fmt::{Display, Formatter};

#[derive(Debug)]
pub enum SchedulerError {
    ScheduleDefinitionError { message: String },
    JobLockError { message: String },
    JobExecutionStateError { message: String },
    JobExecutionError { source: Box<dyn std::error::Error + Send + Sync> },
    JobExecutionPanic { cause: String },
}

impl Display for SchedulerError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            SchedulerError::ScheduleDefinitionError { message } => write!(f, "ScheduleDefinitionError: [{}]", message),
            SchedulerError::JobLockError { message } => write!(f, "JobLockError: [{}]", message),
            SchedulerError::JobExecutionStateError { message } => write!(f, "JobExecutionStateError: [{}]", message),
            SchedulerError::JobExecutionError { .. } => write!(f, "JobExecutionError"),
            SchedulerError::JobExecutionPanic { cause } => write!(f, "JobExecutionPanic: [{}]", cause),
        }
    }
}

impl Error for SchedulerError {
    fn source(&self) -> Option<&(dyn Error + 'static)> {
        match self {
            SchedulerError::ScheduleDefinitionError { .. }
            | SchedulerError::JobLockError { .. }
            | SchedulerError::JobExecutionStateError { .. }
            | SchedulerError::JobExecutionPanic { .. } => None,

            SchedulerError::JobExecutionError { source } => Some(source.as_ref()),
        }
    }
}