main.js

const core = require('@actions/core')
const github = require('@actions/github')

async function main() {
    try {
        const token = core.getInput("github_token", { required: true })
        const workflow = core.getInput("workflow")
        const [owner, repo] = core.getInput("repo", { required: true }).split("/")
        const name = core.getInput("name")
        let workflowConclusion = core.getInput("workflow_conclusion")
        let runID = core.getInput("run_id")
        const client = github.getOctokit(token)

        if(!workflow && !runID) {
            throw new Error("neither workflow nor runID was specified")
        }

        if (!runID) {
            for await (const runs of client.paginate.iterator(client.rest.actions.listWorkflowRuns, {
                owner: owner,
                repo: repo,
                workflow_id: workflow
            }
            )) {
                for (const run of runs.data) {
                    if (workflowConclusion && (workflowConclusion != run.conclusion && workflowConclusion != run.status)) {
                        continue
                    }
                    runID = run.id
                    break
                }
                if (runID) {
                    break
                }
            }
        }

        if (!runID) {
            throw new Error("no matching workflow run found")
        }

        let artifacts = await client.paginate(client.rest.actions.listWorkflowRunArtifacts, {
            owner: owner,
            repo: repo,
            run_id: runID,
        })

        // One artifact or all if `name` input is not specified.
        if (name) {
            artifacts = artifacts.filter((artifact) => {
                return artifact.name == name
            })
        }

        if (artifacts.length == 0)
            throw new Error("no artifacts found")

        for (const artifact of artifacts) {
            console.log("==> Artifact:", artifact.id)

            await client.rest.actions.deleteArtifact({
                owner: owner,
                repo: repo,
                artifact_id: artifact.id,
            })

        }
    } catch (error) {
        core.setFailed(error.message)
    }
}

main()