contrag-core 0.1.0

use crate::entity::RagEntity;
use crate::error::Result;

/// Data source for reading from stable memory within the same canister
/// 
/// This is useful when you want to read entity data that's stored
/// in your canister's stable memory.
pub struct StableMemorySource {
    // Placeholder - actual implementation would use stable structures
}

impl StableMemorySource {
    pub fn new() -> Self {
        Self {}
    }

    /// Read entity from stable memory by key
    /// 
    /// Note: This is a simplified version. In practice, you would use
    /// ic-stable-structures to manage typed stable storage.
    pub fn read<T: RagEntity>(&self, _key: &str) -> Result<Option<T>> {
        // Implementation would depend on how you store entities in stable memory
        Ok(None)
    }

    /// Write entity to stable memory
    pub fn write<T: RagEntity>(&self, _key: &str, _entity: &T) -> Result<()> {
        // Implementation would depend on how you store entities in stable memory
        Ok(())
    }
}

impl Default for StableMemorySource {
    fn default() -> Self {
        Self::new()
    }
}