# Copyright 2022-2023, axodotdev
# SPDX-License-Identifier: MIT or Apache-2.0
#
# CI that:
#
# * checks for a Git Tag that looks like a release
# * builds artifacts with cargo-dist (archives, installers, hashes)
# * uploads those artifacts to temporary workflow zip
# * on success, uploads the artifacts to a Github Release
#
# Note that the Github Release will be created with a generated
# title/body based on your changelogs.

name: Release

permissions:
  contents: write

# This task will run whenever you push a git tag that looks like a version
# like "1.0.0", "v0.1.0-prerelease.1", "my-app/0.1.0", "releases/v1.0.0", etc.
# Various formats will be parsed into a VERSION and an optional PACKAGE_NAME, where
# PACKAGE_NAME must be the name of a Cargo package in your workspace, and VERSION
# must be a Cargo-style SemVer Version (must have at least major.minor.patch).
#
# If PACKAGE_NAME is specified, then the announcement will be for that
# package (erroring out if it doesn't have the given version or isn't cargo-dist-able).
#
# If PACKAGE_NAME isn't specified, then the announcement will be for all
# (cargo-dist-able) packages in the workspace with that version (this mode is
# intended for workspaces with only one dist-able package, or with all dist-able
# packages versioned/released in lockstep).
#
# If you push multiple tags at once, separate instances of this workflow will
# spin up, creating an independent announcement for each one. However Github
# will hard limit this to 3 tags per commit, as it will assume more tags is a
# mistake.
#
# If there's a prerelease-style suffix to the version, then the release(s)
# will be marked as a prerelease.
on:
  push:
    tags:
      - '**[0-9]+.[0-9]+.[0-9]+*'
  pull_request:

jobs:
  # Run 'cargo dist plan' (or host) to determine what tasks we need to do
  plan:
    runs-on: ubuntu-latest
    outputs:
      val: ${{ steps.plan.outputs.manifest }}
      tag: ${{ !github.event.pull_request && github.ref_name || '' }}
      tag-flag: ${{ !github.event.pull_request && format('--tag={0}', github.ref_name) || '' }}
      publishing: ${{ !github.event.pull_request }}
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive
      - name: Install cargo-dist
        # we specify bash to get pipefail; it guards against the `curl` command
        # failing. otherwise `sh` won't catch that `curl` returned non-0
        shell: bash
        run: "curl --proto '=https' --tlsv1.2 -LsSf https://github.com/axodotdev/cargo-dist/releases/download/v0.7.2/cargo-dist-installer.sh | sh"
      # sure would be cool if github gave us proper conditionals...
      # so here's a doubly-nested ternary-via-truthiness to try to provide the best possible
      # functionality based on whether this is a pull_request, and whether it's from a fork.
      # (PRs run on the *source* but secrets are usually on the *target* -- that's *good*
      # but also really annoying to build CI around when it needs secrets to work right.)
      - id: plan
        run: |
          cargo dist ${{ !github.event.pull_request && format('host --steps=create --tag={0}', github.ref_name) || (github.event.pull_request.head.repo.fork && 'plan' || 'host --steps=check') }} --output-format=json > dist-manifest.json
          echo "cargo dist ran successfully"
          cat dist-manifest.json
          echo "manifest=$(jq -c "." dist-manifest.json)" >> "$GITHUB_OUTPUT"
      - name: "Upload dist-manifest.json"
        uses: actions/upload-artifact@v3
        with:
          name: artifacts
          path: dist-manifest.json

  # Build and packages all the platform-specific things
  build-local-artifacts:
    name: build-local-artifacts (${{ join(matrix.targets, ', ') }})
    # Let the initial task tell us to not run (currently very blunt)
    needs:
      - plan
    if: ${{ fromJson(needs.plan.outputs.val).ci.github.artifacts_matrix.include != null && (needs.plan.outputs.publishing == 'true' || fromJson(needs.plan.outputs.val).ci.github.pr_run_mode == 'upload') }}
    strategy:
      fail-fast: false
      # Target platforms/runners are computed by cargo-dist in create-release.
      # Each member of the matrix has the following arguments:
      #
      # - runner: the github runner
      # - dist-args: cli flags to pass to cargo dist
      # - install-dist: expression to run to install cargo-dist on the runner
      #
      # Typically there will be:
      # - 1 "global" task that builds universal installers
      # - N "local" tasks that build each platform's binaries and platform-specific installers
      matrix: ${{ fromJson(needs.plan.outputs.val).ci.github.artifacts_matrix }}
    runs-on: ${{ matrix.runner }}
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      BUILD_MANIFEST_NAME: target/distrib/${{ join(matrix.targets, '-') }}-dist-manifest.json
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive
      - uses: swatinem/rust-cache@v2
      - name: Install cargo-dist
        run: ${{ matrix.install_dist }}
      # Get the dist-manifest
      - name: Fetch local artifacts
        uses: actions/download-artifact@v3
        with:
          name: artifacts
          path: target/distrib/
      - name: Install dependencies
        run: |
          ${{ matrix.packages_install }}
      - name: Build artifacts
        run: |
          # Actually do builds and make zips and whatnot
          cargo dist build ${{ needs.plan.outputs.tag-flag }} --print=linkage --output-format=json ${{ matrix.dist_args }} > dist-manifest.json
          echo "cargo dist ran successfully"
      - id: cargo-dist
        name: Post-build
        # We force bash here just because github makes it really hard to get values up
        # to "real" actions without writing to env-vars, and writing to env-vars has
        # inconsistent syntax between shell and powershell.
        shell: bash
        run: |
          # Parse out what we just built and upload it to scratch storage
          echo "paths<<EOF" >> "$GITHUB_OUTPUT"
          jq --raw-output ".artifacts[]?.path | select( . != null )" dist-manifest.json >> "$GITHUB_OUTPUT"
          echo "EOF" >> "$GITHUB_OUTPUT"

          cp dist-manifest.json "$BUILD_MANIFEST_NAME"
      - name: "Upload artifacts"
        uses: actions/upload-artifact@v3
        with:
          name: artifacts
          path: |
            ${{ steps.cargo-dist.outputs.paths }}
            ${{ env.BUILD_MANIFEST_NAME }}

  # Build and package all the platform-agnostic(ish) things
  build-global-artifacts:
    needs:
      - plan
      - build-local-artifacts
    runs-on: "ubuntu-20.04"
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
      BUILD_MANIFEST_NAME: target/distrib/global-dist-manifest.json
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive
      - name: Install cargo-dist
        run: "curl --proto '=https' --tlsv1.2 -LsSf https://github.com/axodotdev/cargo-dist/releases/download/v0.7.2/cargo-dist-installer.sh | sh"
      # Get all the local artifacts for the global tasks to use (for e.g. checksums)
      - name: Fetch local artifacts
        uses: actions/download-artifact@v3
        with:
          name: artifacts
          path: target/distrib/
      - id: cargo-dist
        shell: bash
        run: |
          cargo dist build ${{ needs.plan.outputs.tag-flag }} --output-format=json "--artifacts=global" > dist-manifest.json
          echo "cargo dist ran successfully"

          # Parse out what we just built and upload it to scratch storage
          echo "paths<<EOF" >> "$GITHUB_OUTPUT"
          jq --raw-output ".artifacts[]?.path | select( . != null )" dist-manifest.json >> "$GITHUB_OUTPUT"
          echo "EOF" >> "$GITHUB_OUTPUT"

          cp dist-manifest.json "$BUILD_MANIFEST_NAME"
      - name: "Upload artifacts"
        uses: actions/upload-artifact@v3
        with:
          name: artifacts
          path: |
            ${{ steps.cargo-dist.outputs.paths }}
            ${{ env.BUILD_MANIFEST_NAME }}
  # Determines if we should publish/announce
  host:
    needs:
      - plan
      - build-local-artifacts
      - build-global-artifacts
    # Only run if we're "publishing", and only if local and global didn't fail (skipped is fine)
    if: ${{ always() && needs.plan.outputs.publishing == 'true' && (needs.build-global-artifacts.result == 'skipped' || needs.build-global-artifacts.result == 'success') && (needs.build-local-artifacts.result == 'skipped' || needs.build-local-artifacts.result == 'success') }}
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    runs-on: "ubuntu-20.04"
    outputs:
      val: ${{ steps.host.outputs.manifest }}
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive
      - name: Install cargo-dist
        run: "curl --proto '=https' --tlsv1.2 -LsSf https://github.com/axodotdev/cargo-dist/releases/download/v0.7.2/cargo-dist-installer.sh | sh"
      # Fetch artifacts from scratch-storage
      - name: Fetch artifacts
        uses: actions/download-artifact@v3
        with:
          name: artifacts
          path: target/distrib/
      # This is a harmless no-op for Github Releases, hosting for that happens in "announce"
      - id: host
        shell: bash
        run: |
          cargo dist host ${{ needs.plan.outputs.tag-flag }} --steps=upload --steps=release --output-format=json > dist-manifest.json
          echo "artifacts uploaded and released successfully"
          cat dist-manifest.json
          echo "manifest=$(jq -c "." dist-manifest.json)" >> "$GITHUB_OUTPUT"
      - name: "Upload dist-manifest.json"
        uses: actions/upload-artifact@v3
        with:
          name: artifacts
          path: dist-manifest.json

  # Create a Github Release while uploading all files to it
  announce:
    needs:
      - plan
      - host
    # use "always() && ..." to allow us to wait for all publish jobs while
    # still allowing individual publish jobs to skip themselves (for prereleases).
    # "host" however must run to completion, no skipping allowed!
    if: ${{ always() && needs.host.result == 'success' }}
    runs-on: "ubuntu-20.04"
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive
      - name: "Download Github Artifacts"
        uses: actions/download-artifact@v3
        with:
          name: artifacts
          path: artifacts
      - name: Cleanup
        run: |
          # Remove the granular manifests
          rm -f artifacts/*-dist-manifest.json
      - name: Create Github Release
        uses: ncipollo/release-action@v1
        with:
          tag: ${{ needs.plan.outputs.tag }}
          name: ${{ fromJson(needs.host.outputs.val).announcement_title }}
          body: ${{ fromJson(needs.host.outputs.val).announcement_github_body }}
          prerelease: ${{ fromJson(needs.host.outputs.val).announcement_is_prerelease }}
          artifacts: "artifacts/*"