GitFOSS

// std
import { existsSync } from "node:fs";
import { spawn } from "node:child_process";
// 1st-party
import type { ServiceMethodFactory } from "@ethicdevs/react-monolith";
// generated via script[generate:prisma]
import type { Repository } from "@prisma/client";
// app
import { Env } from "../../env";
// service
import type { RepositoryLog } from "../../types";
import type { RepositoryServiceDeps } from "./types";

const makeGetRepositoryCommitLog: ServiceMethodFactory<
  RepositoryServiceDeps,
  [Repository, string | undefined, boolean | undefined],
  Promise<RepositoryLog[]>
> = ({ request }) => {
  return async (repo, ref = "HEAD", onlyLast = false) => {
    const parentOrg = await request.prisma.organization.findUnique({
      where: {
        id: repo.organizationId,
      },
    });

    if (parentOrg == null) {
      throw new Error(
        `Could not find the parent organization for project "${repo.slug}".`
      );
    }

    const repoPath = `${Env.GIT_REPOSITORIES_ROOT}/${parentOrg.slug}/${repo.slug}.git`;
    if (existsSync(repoPath) === false) {
      throw new Error(`Could not find a valid git repository at: ${repoPath}`);
    }

    var format =
      "{%n  ^@^commit^@^: ^@^%H^@^,%n  ^@^abbreviated_commit^@^: ^@^%h^@^,%n  ^@^tree^@^: ^@^%T^@^,%n  ^@^abbreviated_tree^@^: ^@^%t^@^,%n  ^@^parent^@^: ^@^%P^@^,%n  ^@^abbreviated_parent^@^: ^@^%p^@^,%n  ^@^refs^@^: ^@^%D^@^,%n  ^@^encoding^@^: ^@^%e^@^,%n  ^@^subject^@^: ^@^%s^@^,%n  ^@^sanitized_subject_line^@^: ^@^%f^@^,%n  ^@^body^@^: ^@^%b^@^,%n  ^@^commit_notes^@^: ^@^%N^@^,%n  ^@^verification_flag^@^: ^@^%G?^@^,%n  ^@^signer^@^: ^@^%GS^@^,%n  ^@^signer_key^@^: ^@^%GK^@^,%n  ^@^author^@^: {%n    ^@^name^@^: ^@^%aN^@^,%n    ^@^email^@^: ^@^%aE^@^,%n    ^@^date^@^: ^@^%aD^@^%n  },%n  ^@^commiter^@^: {%n    ^@^name^@^: ^@^%cN^@^,%n    ^@^email^@^: ^@^%cE^@^,%n    ^@^date^@^: ^@^%cD^@^%n  }%n},";

    const gitLogProcess = spawn(
      "git",
      ["log", `--pretty=format:${format}`, onlyLast ? "-1" : "", ref],
      {
        cwd: repoPath,
      }
    );

    const gitLogResult = await new Promise<RepositoryLog[]>(
      (resolve, reject) => {
        let buffer = [] as string[];
        gitLogProcess.stdout.on("data", (data) => buffer.push(data));
        gitLogProcess.stderr.on("data", (data) => {
          reject(new Error(Buffer.from(data).toString("utf-8")));
        });
        gitLogProcess.stdout.on("close", () => {
          const escapedJson = buffer
            .join("")
            .replace(/\n\^@\^/g, "\\n^@^") // Escape unterminated lines: \n^@\^ -> \\n^@\^
            .replace(/"/gm, '\\"') // Escape double-quotes: " -> \"
            .replace(/\^@\^/gm, '"'); // Escaped double-quotes back to double quotes
          resolve(
            JSON.parse(`[${escapedJson.substring(0, escapedJson.length - 1)}]`)
          );
        });
      }
    );

    return gitLogResult as RepositoryLog[];
  };
};

export default makeGetRepositoryCommitLog;