Get Pull Request Approval with the GitHub API (v4)
Natively, the GitHub API does not provide a way to obtain a pull request's approval status. Here's a workaround.
It is necessary to compare the date of the newest commit and the date of last approval, because new commits automatically invalidate any approvals (default behavior, can be configured).
import { graphql } from "@octokit/graphql"
import { Repository, PullRequest } from "./types"
const query = graphql.defaults({
headers: {
authorization: `token ${process.env.GITHUB_TOKEN}`,
},
})
function isApproved(pr: PullRequest): Boolean {
if (!pr.reviews.edges.length) return false
const latestCommit = new Date(pr.commits.edges[0].node.commit.authoredDate)
const latestApproval = new Date(pr.reviews.edges[0].node.updatedAt)
return latestApproval > latestCommit
}
async function getAllApprovedPullRequests(): Promise<PullRequest[] | null> {
const queryResult: any = await query(`{
repository(owner: "cybertec-postgresql", name: "today-i-learned-content") {
pullRequests(last: 25, states: OPEN) {
edges {
node {
title
number
reviews(states: APPROVED, last: 1) {
edges {
node {
updatedAt
}
}
}
commits(last: 1) {
edges {
node {
commit {
authoredDate
}
}
}
}
}
}
}
}
}
`)
const repo: Repository = queryResult.repository
if (!repo.pullRequests.edges) return null
let pullRequests: PullRequest[] = repo.pullRequests.edges
.map(edge => edge.node)
.filter(pr => isApproved(pr))
return pullRequests
}