name: CI

on:
  push:
    branches: [main]
  pull_request:
  workflow_dispatch:

concurrency:
  group: ci-${{ github.ref }}
  cancel-in-progress: true

env:
  # The SDK is downloaded from Panic (it is not redistributable). Only the
  # C_API headers are used, so the Linux tarball works on every runner.
  PLAYDATE_SDK_VERSION: "3.1.1"

jobs:
  test:
    name: Build & test (macOS)
    runs-on: macos-latest
    steps:
      - uses: actions/checkout@v4

      # The manifest requires Swift 6.4 tools; pick the newest Xcode on the
      # runner. Adjust if the image's default already suffices.
      - uses: maxim-lobanov/setup-xcode@v1
        with:
          xcode-version: latest

      - name: Cache Playdate SDK
        id: sdk-cache
        uses: actions/cache@v4
        with:
          path: ~/PlaydateSDK
          key: playdate-sdk-${{ env.PLAYDATE_SDK_VERSION }}

      - name: Download Playdate SDK headers
        if: steps.sdk-cache.outputs.cache-hit != 'true'
        run: |
          curl -sL "https://download.panic.com/playdate_sdk/Linux/PlaydateSDK-${PLAYDATE_SDK_VERSION}.tar.gz" | tar xz -C "$HOME"
          mv "$HOME/PlaydateSDK-${PLAYDATE_SDK_VERSION}" "$HOME/PlaydateSDK"
          test -f "$HOME/PlaydateSDK/C_API/pd_api.h"

      - name: Install pkg-config module
        run: |
          PLAYDATE_SDK_PATH="$HOME/PlaydateSDK" Scripts/install-pkgconfig.sh "$HOME/pkgconfig"
          echo "PKG_CONFIG_PATH=$HOME/pkgconfig" >> "$GITHUB_ENV"

      - name: Build
        run: swift build

      - name: Test
        run: swift test

      - name: Consumer smoke test
        run: Scripts/consumer-test.sh

  embedded:
    name: Embedded Swift cross-compile
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      # Embedded Swift for bare-metal ARM needs a swift.org development
      # snapshot; release/Xcode toolchains do not ship that stdlib.
      - name: Install Swift main snapshot (swiftly)
        run: |
          curl -sL "https://download.swift.org/swiftly/linux/swiftly-$(uname -m).tar.gz" | tar xz
          ./swiftly init -y --quiet-shell-followup
          . "$HOME/.local/share/swiftly/env.sh"
          swiftly install --use main-snapshot
          echo "$HOME/.local/share/swiftly/bin" >> "$GITHUB_PATH"

      # newlib provides the libc headers pd_api.h includes on bare metal.
      - name: Install arm-none-eabi headers
        run: sudo apt-get update && sudo apt-get install -y --no-install-recommends libnewlib-arm-none-eabi

      - name: Cache Playdate SDK
        id: sdk-cache
        uses: actions/cache@v4
        with:
          path: ~/PlaydateSDK
          key: playdate-sdk-${{ env.PLAYDATE_SDK_VERSION }}

      - name: Download Playdate SDK headers
        if: steps.sdk-cache.outputs.cache-hit != 'true'
        run: |
          curl -sL "https://download.panic.com/playdate_sdk/Linux/PlaydateSDK-${PLAYDATE_SDK_VERSION}.tar.gz" | tar xz -C "$HOME"
          mv "$HOME/PlaydateSDK-${PLAYDATE_SDK_VERSION}" "$HOME/PlaydateSDK"
          test -f "$HOME/PlaydateSDK/C_API/pd_api.h"

      - name: Install pkg-config module
        run: |
          PLAYDATE_SDK_PATH="$HOME/PlaydateSDK" Scripts/install-pkgconfig.sh "$HOME/pkgconfig"
          echo "PKG_CONFIG_PATH=$HOME/pkgconfig" >> "$GITHUB_ENV"

      - name: Cross-compile for armv7em-none-none-eabi
        run: Scripts/build-embedded.sh