//! Error types for database operations

use std::path::PathBuf;
use thiserror::Error;

/// Errors that can occur during database operations
#[derive(Debug, Error)]
pub enum DatabaseError {
    /// SQLite error
    #[error("SQLite error: {0}")]
    Sqlite(#[from] rusqlite::Error),

    /// Tokio-rusqlite error
    #[error("Database connection error: {0}")]
    Connection(#[from] tokio_rusqlite::Error),

    /// I/O error
    #[error("I/O error: {0}")]
    Io(#[from] std::io::Error),

    /// JSON serialization error
    #[error("JSON error: {0}")]
    Json(#[from] serde_json::Error),

    /// Protocol not found
    #[error("Protocol not found: {id}")]
    ProtocolNotFound { id: String },

    /// Subject not found
    #[error("Subject not found: {id}")]
    SubjectNotFound { id: String },

    /// Recording not found
    #[error("Recording not found: {id}")]
    RecordingNotFound { id: String },

    /// Invalid protocol directory
    #[error("Invalid protocol directory: {path}")]
    InvalidProtocolDir { path: PathBuf },

    /// Database not initialized
    #[error("Database not initialized")]
    NotInitialized,

    /// Duplicate entry
    #[error("Duplicate entry: {message}")]
    DuplicateEntry { message: String },
}

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