src/commit-data.h

/* Copyright 2025 Mike Becker. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef COMMIT_DATA_H
#define COMMIT_DATA_H

#include <unordered_map>
#include <numeric>
#include <vector>
#include <string>

namespace fm {
    struct commit_info final {
        std::string hash;
        std::string message;
        commit_info(std::string_view hash, std::string_view message)
            : hash{hash}, message {message} {}
    };

    using commit_counts = std::unordered_map<
        std::string, // repository name
        unsigned>;
    using summaries_lists = std::unordered_map<
        std::string, // repository name
        std::vector<commit_info> >;
    using tag_lists = std::unordered_map<
        std::string, // repository name
        std::vector<commit_info> >;
    using tag_summaries = std::unordered_map<
        std::string, // repository name
        std::vector<std::string> >;

    struct commits final {
        summaries_lists summaries;
        tag_lists tags;

        [[nodiscard]] unsigned count(const std::string &repo) const {
            return summaries.at(repo).size();
        }

        [[nodiscard]] unsigned count() const {
            return std::accumulate(
                    summaries.begin(), summaries.end(), 0u,
                    [](unsigned sum, const auto &pair) { return sum + pair.second.size(); });
        }
    };

    struct commit_summary final {
        tag_summaries tags_with_date;
        commit_counts commits;

        [[nodiscard]] unsigned count(const std::string &repo) const {
            return commits.at(repo);
        }

        [[nodiscard]] unsigned count() const {
            return std::accumulate(
                    commits.begin(), commits.end(), 0u,
                    [](unsigned sum, const auto &pair) { return sum + pair.second; });
        }
    };
}

#endif //COMMIT_DATA_H