use thiserror::Error;

/// Unified error type for apt-ostree operations
#[derive(Error, Debug)]
pub enum AptOstreeError {
    #[error("APT error: {0}")]
    Apt(#[from] rust_apt::error::AptErrors),
    
    #[error("Deployment failed: {0}")]
    Deployment(String),
    
    #[error("System initialization failed: {0}")]
    Initialization(String),
    
    #[error("Configuration error: {0}")]
    Configuration(String),
    
    #[error("Permission denied: {0}")]
    PermissionDenied(String),
    
    #[error("IO error: {0}")]
    Io(#[from] std::io::Error),

    #[error("Serde JSON error: {0}")]
    SerdeJson(#[from] serde_json::Error),
    
    #[error("Invalid argument: {0}")]
    InvalidArgument(String),
    
    #[error("Operation cancelled by user")]
    Cancelled,
    
    #[error("System not initialized. Run 'apt-ostree init' first")]
    NotInitialized,
    
    #[error("Branch not found: {0}")]
    BranchNotFound(String),
    
    #[error("Package not found: {0}")]
    PackageNotFound(String),
    
    #[error("Dependency conflict: {0}")]
    DependencyConflict(String),
    
    #[error("Transaction failed: {0}")]
    Transaction(String),
    
    #[error("Rollback failed: {0}")]
    Rollback(String),
    
    #[error("Package operation failed: {0}")]
    PackageOperation(String),
    
    #[error("Script execution failed: {0}")]
    ScriptExecution(String),
    
    #[error("OSTree operation failed: {0}")]
    OstreeOperation(String),
    
    #[error("OSTree error: {0}")]
    OstreeError(String),
    
    #[error("DEB package parsing failed: {0}")]
    DebParsing(String),
    
    #[error("Filesystem assembly failed: {0}")]
    FilesystemAssembly(String),
    
    #[error("Database error: {0}")]
    DatabaseError(String),
    
    #[error("Sandbox error: {0}")]
    SandboxError(String),
    
    #[error("Unknown error: {0}")]
    Unknown(String),
    
    #[error("System error: {0}")]
    SystemError(String),
    
    #[error("APT error: {0}")]
    AptError(String),
    
    #[error("UTF-8 conversion error: {0}")]
    FromUtf8(#[from] std::string::FromUtf8Error),
    
    #[error("GLib error: {0}")]
    Glib(#[from] ostree::glib::Error),
    
    #[error("Regex error: {0}")]
    Regex(#[from] regex::Error),
}

/// Result type for apt-ostree operations
pub type AptOstreeResult<T> = Result<T, AptOstreeError>;