//! Database error types.

use thiserror::Error;

/// Result type for database operations.
pub type Result<T> = std::result::Result<T, DbError>;

/// Database-specific errors.
#[derive(Debug, Error)]
pub enum DbError {
    /// Entity was not found.
    #[error("entity not found: {0}")]
    NotFound(String),

    /// Unique or foreign key constraint violation.
    #[error("constraint violation: {0}")]
    ConstraintViolation(String),

    /// Conflict, e.g. entity already exists.
    #[error("conflict: {0}")]
    Conflict(String),

    /// Validation error when converting from raw database values.
    #[error("validation error: {0}")]
    Validation(String),

    /// SQLx database error.
    #[error("database error: {0}")]
    Sqlx(#[from] sqlx::Error),

    /// Migration failure.
    #[error("migration error: {0}")]
    Migration(String),

    /// Internal or unexpected error.
    #[error("internal database error: {0}")]
    Internal(String),
}

impl From<nx9_wg_core::error::Nx9Error> for DbError {
    fn from(err: nx9_wg_core::error::Nx9Error) -> Self {
        Self::Validation(err.to_string())
    }
}