Function save_downloaded_change

atomic-cli/src/commands/pull/helpers.rs:197–217

Save a downloaded change to the repository's change store. Writes the change data to the appropriate location in the repository's `.atomic/changes/` directory structure. # Arguments `repo` - The repository to save to `hash` - The expected hash of the change (for verification) `data` - The raw change file data # Returns `Ok(())` on success, or an appropriate error. # Errors - `CliError::Inte

(repo: &Repository, hash: &Hash, data: Bytes)

/// save_downloaded_change(&repo, &expected_hash, data)?;
/// ```
pub fn save_downloaded_change(repo: &Repository, hash: &Hash, data: Bytes) -> CliResult<()> {
    // Deserialize the change from bytes
    let mut cursor = Cursor::new(&data[..]);
    let (change, computed_hash) = Change::deserialize(&mut cursor)
        .map_err(|e| CliError::Internal(anyhow::anyhow!("Failed to deserialize change: {}", e)))?;

    // Verify the hash matches what we expected
    if computed_hash != *hash {
        return Err(CliError::Internal(anyhow::anyhow!(
            "Hash mismatch: expected {}, got {}",
            hash.to_base32(),
            computed_hash.to_base32()
        )));
    }

    // Save to the change store
    repo.save_change(&change)
        .map_err(|e| CliError::Internal(anyhow::anyhow!("Failed to save change: {}", e)))?;

    Ok(())
}

// Error Conversion