liboxen 0.53.0

Oxen is a fast data version control system, built with machine learning training data in mind. Designed to handle terabytes of data with ease, using a workflow similar to git. Version both structured and unstructured data of any modality: text, images, video, audio, CSV, Parquet, JSONL, model checkpoints, and more. liboxen is the embeddable core library behind the oxen CLI and server, which power fine tuning and inference pipelines for multimodal LLMs, image models, and video models on Oxen.ai.
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use crate::api;
use crate::constants::DEFAULT_BRANCH_NAME;
use crate::error::OxenError;
use crate::model::RemoteRepository;

/// Looks at branch or commit id and resolves to commit id. Falls back to main branch.
pub async fn remote_commit_id(
    repo: &RemoteRepository,
    revision: Option<String>,
) -> Result<String, OxenError> {
    let Some(revision) = revision else {
        // Fallback to main branch
        let main_branch = api::client::branches::get_by_name(repo, DEFAULT_BRANCH_NAME).await?;
        if main_branch.is_none() {
            return Err(OxenError::basic_str("No main branch found on remote."));
        }
        return Ok(main_branch.unwrap().commit_id);
    };

    // First see if the commit exists
    if api::client::commits::get_by_id(repo, &revision)
        .await?
        .is_some()
    {
        return Ok(revision.to_string());
    }

    // If not, see if the branch exists
    if let Some(branch) = api::client::branches::get_by_name(repo, &revision).await? {
        return Ok(branch.commit_id);
    }

    // Should not get here
    Err(OxenError::basic_str("No remote commit specified."))
}