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import { CommitSummary } from "./commit";
import { Reference } from "./reference";
import { Repository } from "./repository";
import { Repository as NodeGitRepository } from "nodegit";
import { BranchError, createError } from "./error";
/**
* A representation of a branch
*
* @extends Reference
*/
export class Branch extends Reference {
/**
* Returns the branch's latest commit
*
* @returns A commit summary instance
*/
public async latestCommit(): Promise<CommitSummary> {
const latest_commit = this._owner.nodegitRepository.getBranchCommit(this._ng_reference).catch(() => {
throw(createError(BranchError, 500, "Failed to get the latest commit"));
});
return {
id: (await latest_commit).sha(),
message: (await latest_commit).message(),
date: (await latest_commit).time()
};
}
/**
* Lookup a branch
*
* @param owner - The repository which the branch is in
* @param branch - The SHA of a branch
* @returns An instance of a branch
*/
public static async lookup(owner: Repository, branch: string): Promise<Branch> {
const reference = await owner.nodegitRepository.getBranch(branch).catch(err => {
if(err.errno === -3) {
throw(createError(BranchError, 404, "Branch not found!"));
}
throw(createError(BranchError, 500, "Something went wrong."));
});
return new Branch(owner, reference);
}
/**
* Returns if a branch exists or not
*
* @param owner - The repository which the branch is in
* @param branch - The SHA of a branch
* @returns Whether or not the branch exists
*/
public static async lookupExists(owner: NodeGitRepository, branch: string): Promise<boolean> {
return owner.getBranch(branch)
.then(() => true)
.catch(() => false);
}
}
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