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import { Object as NodeGitObject, Oid as NodeGitOid, Repository as NodeGitRepository } from "nodegit";
import { Request, connect } from "./http";
import { basename, dirname } from "path";
import { getDirectory, getFile } from "./misc";
import { Branch } from "./branch";
import { Commit } from "./commit";
import { FastifyReply } from "fastify";
import { Tag } from "./tag";
import { Tree } from "./tree";
import { createError, ErrorWhere, NotFoundError, UnknownError } from "./error";
/**
* Returns the full name of a git repository
*
* @param repo_name - The name of a repository
* @returns The repository name ending with .git
*/
function getFullRepositoryName(repo_name: string) {
return repo_name.endsWith(".git") ? repo_name : `${repo_name}.git`;
}
type RepositoryName = {
short: string,
full: string,
}
// I have no idea what this sort of error is from
interface WeirdError extends Error {
errno: number;
errorFunction: string;
}
/**
* A representation of an bare git repository
*/
export class Repository {
public ng_repository: NodeGitRepository;
public name: RepositoryName;
public git_dir: string;
private _branch: string;
/**
* @param repository - An instance of a Nodegit repository
* @param branch - The branch to use
*/
constructor(repository: NodeGitRepository, branch: string) {
this.ng_repository = repository;
this.name = {
short: basename(repository.path()).slice(0, -4),
full: basename(repository.path())
};
this.git_dir = dirname(repository.path());
this._branch = branch;
}
/**
* Returns the repository's description
*/
public description(): Promise<string> {
return getFile(this.git_dir, this.name.full, "description");
}
/**
* Returns the repository's owner
*/
public owner(): Promise<string> {
return getFile(this.git_dir, this.name.full, "owner");
}
get branch(): string {
return this._branch;
}
set branch(branch: string) {
this._branch = branch;
}
/**
* Returns the repository's branch
*
* @returns An instance of a branch
*/
public getBranch(): Promise<Branch> {
return Branch.lookup(this, this._branch);
}
/**
* Returns the repository's commits
*
* @param [amount=20] - The number of commits to get or whether or not to get all commits
* @returns An array of commit instances
*/
public async commits(amount?: number | boolean): Promise<Commit[]> {
return Commit.getMultiple(this, amount);
}
/**
* Returns the repository's head commit
*
* @returns An instance of a commit
*/
public async head(): Promise<Commit> {
return Commit.branchCommit(this);
}
/**
* Returns the repository's tree
*
* @returns An instance of a tree
*/
public async tree(): Promise<Tree> {
return Tree.ofRepository(this);
}
/**
* Returns if an git object exists or not
*
* @param id - The SHA of a git object
* @returns Whether or not it exists
*/
public lookupExists(id: string): Promise<boolean> {
return NodeGitObject.lookup(this.ng_repository, NodeGitOid.fromString(id), NodeGitObject.TYPE.ANY)
.then(() => true)
.catch(() => false);
}
/**
* Returns this repository instance with a different branch
*
* @param branch - The branch to switch to
* @returns An instance of a repository
*/
public async withBranch(branch: string): Promise<Repository> {
if(!await Branch.lookupExists(this.ng_repository, branch)) {
throw(createError(ErrorWhere.Repository, NotFoundError, "branch"));
}
return new Repository(this.ng_repository, branch);
}
/**
* Returns the repository's branches
*
* @returns An array of branch instances
*/
public async branches(): Promise<Branch[]> {
return Branch.getAll(this);
}
/**
* Returns the repository's tags
*
* @returns An array of tag instances
*/
public async tags(): Promise<Tag[]> {
return Tag.getAll(this);
}
/**
* Connect to the Git HTTP backend
*
* @param req - A Fastify request
* @param reply - A Fastify reply
*/
public HTTPconnect(req: Request, reply: FastifyReply): void {
connect(this, req, reply);
}
/**
* Opens a bare git repository
*
* @param git_dir - The directory that contains the repository
* @param repository - The directory of a bare repository
* @param branch - A branch to use
* @returns An instance of a git repository
*/
public static async open(git_dir: string, repository: string, branch?: string): Promise<Repository> {
let ng_repository = await NodeGitRepository.openBare(`${git_dir}/${getFullRepositoryName(repository)}`).catch((err: WeirdError) => {
if(err.errno === -3) {
throw(createError(ErrorWhere.Repository, NotFoundError, "repository"));
}
throw(createError(ErrorWhere.Repository, UnknownError));
});
if(branch) {
if(!await Branch.lookupExists(ng_repository, branch)) {
throw(createError(ErrorWhere.Repository, NotFoundError, "branch"));
}
}
return new Repository(ng_repository, branch || "master");
}
/**
* Opens all of the git repositories inside a directory
*
* @param git_dir - The directory that contains the repositories
* @returns An array of repository instances
*/
public static async openAll(git_dir: string): Promise<Repository[]> {
const dir_content = await getDirectory(git_dir);
if(dir_content.length === 0) {
return [];
}
const repositories = dir_content.filter(dir_entry => dir_entry.endsWith(".git"));
return Promise.all(repositories.map(repository => this.open(git_dir, repository)));
}
}
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