regtest-mine.yml

name: Regtest Mine Blocks

on:
  schedule:
    - cron: '0 2 * * *' # 2 AM UTC daily
  workflow_dispatch:
    inputs:
      blocktank_server:
        description: Blocktank base URL
        required: true
        default: 'https://api.stag0.blocktank.to/blocktank/api/v2'
      mempool_server:
        description: Mempool API base URL
        required: true
        default: 'https://mempool.bitkit.stag0.blocktank.to'
      block_count:
        description: Number of regtest blocks to mine
        required: true
        default: '1'

jobs:
  mine:
    runs-on: ubuntu-latest
    env:
      BLOCK_COUNT: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.block_count || '1' }}
      BLOCKTANK_SERVER: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.blocktank_server || 'https://api.stag0.blocktank.to/blocktank/api/v2' }}
      MEMPOOL_SERVER: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.mempool_server || 'https://mempool.bitkit.stag0.blocktank.to' }}
    steps:
      - name: Validate params
        run: |
          if [[ -z "${BLOCK_COUNT}" ]]; then
            echo "BLOCK_COUNT is empty" >&2
            exit 1
          fi
          if ! [[ "${BLOCK_COUNT}" =~ ^[0-9]+$ ]]; then
            echo "BLOCK_COUNT must be a positive integer: ${BLOCK_COUNT}" >&2
            exit 1
          fi
          if [[ "${BLOCK_COUNT}" -eq 0 ]]; then
            echo "BLOCK_COUNT must be greater than zero" >&2
            exit 1
          fi
          if [[ -z "${BLOCKTANK_SERVER}" ]]; then
            echo "BLOCKTANK_SERVER is empty" >&2
            exit 1
          fi
          if [[ -z "${MEMPOOL_SERVER}" ]]; then
            echo "MEMPOOL_SERVER is empty" >&2
            exit 1
          fi
      - name: Capture initial tip height
        run: |
          MEMPOOL_API="${MEMPOOL_SERVER%/}/api/blocks/tip/height"
          TIP_BEFORE=$(curl -sSf "${MEMPOOL_API}")
          if [[ -z "${TIP_BEFORE}" ]] || ! [[ "${TIP_BEFORE}" =~ ^[0-9]+$ ]]; then
            echo "Failed to obtain initial block height (got: ${TIP_BEFORE})" >&2
            exit 1
          fi
          echo "Initial tip height: ${TIP_BEFORE}"
          echo "TIP_BEFORE=${TIP_BEFORE}" >> "${GITHUB_ENV}"
      - name: Mine regtest blocks
        run: |
          echo "Mining ${BLOCK_COUNT} block(s) on regtest..."
          curl --fail --silent --show-error \
            -X POST \
            "${BLOCKTANK_SERVER}/regtest/chain/mine" \
            -H 'Content-Type: application/json' \
            -d "{\"count\": ${BLOCK_COUNT}}"
      - name: Verify new tip height
        run: |
          MEMPOOL_API="${MEMPOOL_SERVER%/}/api/blocks/tip/height"
          EXPECTED=$((TIP_BEFORE + BLOCK_COUNT))
          echo "Waiting up to 10 seconds for tip height to reach ${EXPECTED}..."
          END=$((SECONDS + 10))
          LAST_TIP=""
          while (( SECONDS < END )); do
            TIP_AFTER=$(curl -sSf "${MEMPOOL_API}" 2>/dev/null)
            if [[ "${TIP_AFTER}" =~ ^[0-9]+$ ]]; then
              LAST_TIP="${TIP_AFTER}"
              if (( TIP_AFTER >= EXPECTED )); then
                echo "New tip height: ${TIP_AFTER}"
                echo "Regtest height increased as expected"
                exit 0
              fi
            else
              echo "Failed to read tip height (got: ${TIP_AFTER:-empty}), retrying..."
            fi
            sleep 1
          done
          echo "Tip height did not reach expected value ${EXPECTED} (started at ${TIP_BEFORE}) within 10 seconds (last observed: ${LAST_TIP:-unknown})" >&2
          exit 1