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 serde::{Deserialize, Serialize};
use std::fmt;
use std::hash::{Hash, Hasher};
use time::OffsetDateTime;
use utoipa::ToSchema;

use super::MerkleHash;
use crate::config::UserConfig;
use crate::error::OxenError;

/// NewCommitBody is used to parse the json into a Commit from the API
#[derive(Deserialize, Serialize, Debug, Clone, ToSchema)]
pub struct NewCommitBody {
    pub message: String,
    pub author: String,
    pub email: String,
}

/// NewCommit is to be used when creating a new Commit, but we don't know the id yet because we need to hash the contents
#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct NewCommit {
    pub parent_ids: Vec<String>,
    pub message: String,
    pub author: String,
    pub email: String,
    #[serde(with = "time::serde::rfc3339")]
    pub timestamp: OffsetDateTime,
}

#[derive(Serialize, Deserialize, Debug, Clone, ToSchema)]
#[schema(
    example = json!({
        "id": "a1b2c3d4e5f67890abcdef1234567890",
        "parent_ids": [
            "f1e2d3c4b5a67890fedcba9876543210"
        ],
        "message": "Refactor data loading pipeline.",
        "author": "ox",
        "email": "ox@example.com",
        "timestamp": "2025-01-01T10:00:00Z"
    })
)]
pub struct Commit {
    pub id: String,
    pub parent_ids: Vec<String>,
    pub message: String,
    pub author: String,
    pub email: String,
    #[serde(with = "time::serde::rfc3339")]
    pub timestamp: OffsetDateTime,
}

impl fmt::Display for Commit {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        write!(f, "{} -> '{}'", self.id, self.message)
    }
}

// TODO: is there a way to derive all these values...and just add one new?
#[derive(Serialize, Deserialize, Debug, Clone)]
pub struct CommitWithBranchName {
    pub id: String,
    pub parent_ids: Vec<String>,
    pub message: String,
    pub author: String,
    pub email: String,
    #[serde(with = "time::serde::rfc3339")]
    pub timestamp: OffsetDateTime,
    pub size: u64,
    pub branch_name: String,
}

// Hash on the id field so we can quickly look up
impl PartialEq for Commit {
    fn eq(&self, other: &Commit) -> bool {
        self.id == other.id
    }
}
impl Eq for Commit {}
impl Hash for Commit {
    fn hash<H: Hasher>(&self, state: &mut H) {
        self.id.hash(state);
    }
}

impl std::error::Error for Commit {}

impl Commit {
    pub fn from_new_and_id(new_commit: &NewCommit, id: String) -> Commit {
        Commit {
            id,
            parent_ids: new_commit.parent_ids.to_owned(),
            message: new_commit.message.to_owned(),
            author: new_commit.author.to_owned(),
            email: new_commit.email.to_owned(),
            timestamp: new_commit.timestamp.to_owned(),
        }
    }

    pub fn hash(&self) -> Result<MerkleHash, OxenError> {
        self.id.parse()
    }
}

impl CommitWithBranchName {
    pub fn from_commit(commit: &Commit, size: u64, branch_name: String) -> CommitWithBranchName {
        CommitWithBranchName {
            id: commit.id.to_owned(),
            parent_ids: commit.parent_ids.to_owned(),
            message: commit.message.to_owned(),
            author: commit.author.to_owned(),
            email: commit.email.to_owned(),
            timestamp: commit.timestamp.to_owned(),
            size,
            branch_name,
        }
    }
}

impl NewCommitBody {
    pub fn from_config(cfg: &UserConfig, message: &str) -> NewCommitBody {
        NewCommitBody {
            message: message.to_string(),
            author: cfg.name.clone(),
            email: cfg.email.clone(),
        }
    }
}

#[derive(Serialize, Deserialize, Debug, ToSchema)]
#[schema(
    example = json!({
        "commit": {
            "id": "a1b2c3d4e5f67890abcdef1234567890",
            "parent_ids": [
                "f1e2d3c4b5a67890fedcba9876543210"
            ],
            "message": "Refactor data loading pipeline.",
            "author": "ox",
            "email": "ox@example.com",
            "timestamp": "2025-01-01T10:00:00Z"
        },
        "num_entries": 12000,
        "num_synced_files": 11950,
    })
)]
pub struct CommitStats {
    pub commit: Commit,
    pub num_entries: usize, // this is how many entries are in our commit db
    pub num_synced_files: usize, // this is how many files are actually synced (in case we killed)
}