gh-deployment-purge.sh

#!/bin/bash
set -euo pipefail
IFS=$'\n\t'

owner_repo=${1:-}
state=${2:-}
environment=${3:-}
if [[ -z "$owner_repo" || -z "$state" || -z "$environment" ]]; then
    echo -e 'WARNING: this will delete and overwrite stuff without asking for permission, and no backup is provided. Continue at your own risk'
    echo -e 'This script overwrites environment name and state for deployments, 100 at a time. It then attempts to delete the deployment.'
    echo -e 'You may need to run this script multiple times.'
    echo -e 'It assumes you have gh cli and are logged in with at least repo scope & perhaps deployment scope.'
    echo -e "Repo must be specified in owner/repo and suggested params are 'invalid' state and 'delete' environment."
    echo -e "usage: $0 owner/repo state environment"
    exit 1
fi

gh api \
  -H "Accept: application/vnd.github.v3+json" \
  "/repos/${owner_repo}/deployments?per_page=100" | jq -r '.[].id' | while read -r deployment_id; do

    ## set status and environment name
    gh api \
      -H "Accept: application/vnd.github.v3+json" \
      --method POST \
      -f state="${state}" \
      -f environment="${environment}" \
      "/repos/${owner_repo}/deployments/${deployment_id}/statuses"

    ## delete deployment
    gh api \
      -H "Accept: application/vnd.github.v3+json" \
      --method DELETE \
      "/repos/${owner_repo}/deployments/${deployment_id}"
done

echo -e 'Run Completed'