name: Release

on:
  push:
    tags:
      - 'cmesh-bot-v*'
  workflow_dispatch:
    inputs:
      version:
        description: 'Version label to embed (e.g. v1.2.3 or v1.2.3-rc.1). Required for manual runs.'
        required: true
        type: string

permissions:
  contents: write

concurrency:
  group: release-${{ github.ref }}
  cancel-in-progress: false

env:
  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true

jobs:
  enumerate:
    name: Enumerate companion targets
    runs-on: ubuntu-latest
    timeout-minutes: 5
    outputs:
      version: ${{ steps.version.outputs.version }}
      shards: ${{ steps.shards.outputs.shards }}
      env_count: ${{ steps.shards.outputs.env_count }}
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Resolve release version
        id: version
        run: |
          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
            version="${{ inputs.version }}"
          else
            tag="${GITHUB_REF#refs/tags/}"
            # cmesh-bot-vX.Y.Z[-...]  ->  vX.Y.Z[-...]
            version="${tag#cmesh-bot-}"
          fi
          if [ -z "$version" ]; then
            echo "Could not derive a version label." >&2
            exit 1
          fi
          echo "version=$version" >> "$GITHUB_OUTPUT"
          echo "Release version: $version"

      - name: Enumerate companion USB+BLE environments and shard
        id: shards
        run: |
          envs=$(bash scripts/list-release-companion-envs.sh)
          count=$(printf '%s\n' "$envs" | wc -l | tr -d ' ')
          echo "env_count=$count" >> "$GITHUB_OUTPUT"
          echo "Found $count companion USB+BLE environments."
          shards=$(jq -nc '[range(0;8)]')
          echo "shards=$shards" >> "$GITHUB_OUTPUT"

  build:
    name: Build shard ${{ matrix.shard }}/8
    needs: enumerate
    runs-on: ubuntu-latest
    timeout-minutes: 180
    strategy:
      fail-fast: false
      matrix:
        shard: ${{ fromJSON(needs.enumerate.outputs.shards) }}
    steps:
      - name: Check out repository
        uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Cache PlatformIO
        uses: actions/cache@v4
        with:
          path: |
            ~/.cache/pip
            ~/.platformio/.cache
            ~/.platformio/packages
          key: ${{ runner.os }}-pio-release-${{ hashFiles('vendor/MeshCore/platformio.ini', 'vendor/MeshCore/variants/**/platformio.ini') }}
          restore-keys: |
            ${{ runner.os }}-pio-release-
            ${{ runner.os }}-pio-

      - name: Install Python
        uses: actions/setup-python@v5
        with:
          python-version: '3.11'

      - name: Install PlatformIO
        run: python3 -m pip install --upgrade platformio

      - name: Apply patches
        run: bash scripts/apply-patches.sh

      - name: Select envs for this shard
        id: select
        run: |
          envs=$(bash scripts/list-release-companion-envs.sh)
          shard_envs=$(printf '%s\n' "$envs" \
                       | awk -v shard=${{ matrix.shard }} -v total=8 'NR%total==shard')
          printf 'envs<<EOF\n%s\nEOF\n' "$shard_envs" >> "$GITHUB_OUTPUT"
          shard_count=$(printf '%s\n' "$shard_envs" | grep -c . || true)
          echo "Shard ${{ matrix.shard }}: building $shard_count envs"
          printf '%s\n' "$shard_envs"

      - name: Build firmware
        env:
          FIRMWARE_VERSION: ${{ needs.enumerate.outputs.version }}
        run: |
          set -e
          mkdir -p out/firmware out/logs
          cd vendor/MeshCore
          while IFS= read -r env; do
            [ -z "$env" ] && continue
            log="../../out/logs/$env.log"
            echo "::group::Building $env"
            if /usr/bin/env bash build.sh build-firmware "$env" 2>&1 | tee "$log"; then
              echo "::endgroup::"
              if compgen -G "out/$env-*" >/dev/null; then
                cp out/"$env"-* ../../out/firmware/
              fi
            else
              echo "::endgroup::"
              echo "::error::Build failed for $env (see logs artifact)"
              exit 1
            fi
          done <<< "${{ steps.select.outputs.envs }}"

      - name: Upload firmware shard
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: firmware-shard-${{ matrix.shard }}
          path: out/firmware
          if-no-files-found: warn
          retention-days: 14

      - name: Upload build logs
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: build-logs-shard-${{ matrix.shard }}
          path: out/logs
          if-no-files-found: warn
          retention-days: 14

  release:
    name: Publish draft release
    needs: [enumerate, build]
    runs-on: ubuntu-latest
    timeout-minutes: 15
    steps:
      - name: Check out repository
        uses: actions/checkout@v4

      - name: Download all firmware shards
        uses: actions/download-artifact@v4
        with:
          pattern: firmware-shard-*
          merge-multiple: true
          path: release-firmware

      - name: List release artifacts
        run: |
          count=$(find release-firmware -maxdepth 1 -type f | wc -l | tr -d ' ')
          echo "Aggregated $count release artifacts:"
          ls -la release-firmware/

      - name: Create draft release
        uses: softprops/action-gh-release@v2
        if: startsWith(github.ref, 'refs/tags/')
        with:
          name: Colorado Mesh Bot Firmware ${{ needs.enumerate.outputs.version }}
          tag_name: ${{ github.ref_name }}
          draft: true
          prerelease: ${{ contains(needs.enumerate.outputs.version, '-') }}
          generate_release_notes: true
          body: |
            Companion-radio firmware for the Colorado Mesh.

            **Built environments:** ${{ needs.enumerate.outputs.env_count }} companion USB+BLE targets across ESP32, NRF52, RP2040, and STM32 platforms.

            See [CHANGELOG.md](https://github.com/${{ github.repository }}/blob/main/CHANGELOG.md) for changes in this version.

            ### Install

            Easiest: flash via [flasher.meshcore.io](https://flasher.meshcore.io) and drag in the right artifact for your board.

            - ESP32 boards: `<board>-merged.bin`
            - NRF52 boards: `<board>.uf2`

            See the [README](https://github.com/${{ github.repository }}#install) for other install methods.
          files: release-firmware/*