Function get_repo_commit

common/hf-cache.cpp:230–290

}

static std::string get_repo_commit(const std::string & repo_id,
                                   const std::string & token) {
    try {
        auto endpoint = common_get_model_endpoint();
        auto json = api_get(endpoint + "api/models/" + repo_id + "/refs", token);

        if (!json.is_object() ||
            !json.contains("branches") || !json["branches"].is_array()) {
            LOG_WRN("%s: missing 'branches' for '%s'\n", __func__, repo_id.c_str());
            return {};
        }

        fs::path refs_path = get_repo_path(repo_id) / "refs";
        std::string name;
        std::string commit;

        for (const auto & branch : json["branches"]) {
            if (!branch.is_object() ||
                !branch.contains("name") || !branch["name"].is_string() ||
                !branch.contains("targetCommit") || !branch["targetCommit"].is_string()) {
                continue;
            }
            std::string _name = branch["name"].get<std::string>();
            std::string _commit = branch["targetCommit"].get<std::string>();

            if (!is_valid_subpath(refs_path, _name)) {
                LOG_WRN("%s: skip invalid branch: %s\n", __func__, _name.c_str());
                continue;
            }
            if (!is_valid_commit(_commit)) {
                LOG_WRN("%s: skip invalid commit: %s\n", __func__, _commit.c_str());
                continue;
            }

            if (_name == "main") {
                name = _name;
                commit = _commit;
                break;
            }

            if (name.empty() || commit.empty()) {
                name = _name;
                commit = _commit;
            }
        }

        if (name.empty() || commit.empty()) {
            LOG_WRN("%s: no valid branch for '%s'\n", __func__, repo_id.c_str());
            return {};
        }

        safe_write_file(refs_path / name, commit);
        return commit;

    } catch (const nl::json::exception & e) {
        LOG_ERR("%s: JSON error: %s\n", __func__, e.what());
    } catch (const std::exception & e) {
        LOG_ERR("%s: error: %s\n", __func__, e.what());