# NOTE:
#
# When adding support for a new chip to `esp-hal`, there are a number of
# updates which must be made to the CI workflow in order to reflect this; the
# changes are:
#
# 1.) In the 'esp-hal' job, add the name of the chip to the `matrix.soc` array.
# 1a.) If the device has a low-power core (which is supported in
#      `esp-lp-hal`), then update the `if` condition to build prerequisites.
# 2.) In the 'msrv-riscv' job, add checks as needed for the new chip.
# 3.) In the 'clippy-riscv' job, add checks as needed for the new chip.
# 3.) In the 'rustfmt' job, add checks as needed for the new chip.

name: CI

on:
  pull_request:
    paths-ignore:
      - "**/CHANGELOG.md"
      - "**/README.md"
  push:
    branches-ignore:
      - "gh-readonly-queue/**"
    paths-ignore:
      - "**/CHANGELOG.md"
      - "**/README.md"
  merge_group:
  workflow_dispatch:

env:
  CARGO_TERM_COLOR: always
  GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
  MSRV: "1.76.0"

# Cancel any currently running workflows from the same PR, branch, or
# tag when a new workflow is triggered.
#
# https://stackoverflow.com/a/66336834
concurrency:
  cancel-in-progress: true
  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}

jobs:
  # --------------------------------------------------------------------------
  # Build Packages

  esp-hal:
    name: esp-hal (${{ matrix.device.soc }})
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        device: [
            # RISC-V devices:
            { soc: "esp32c2", target: "riscv32imc-unknown-none-elf" },
            { soc: "esp32c3", target: "riscv32imc-unknown-none-elf" },
            { soc: "esp32c6", target: "riscv32imac-unknown-none-elf" },
            { soc: "esp32h2", target: "riscv32imac-unknown-none-elf" },
            # Xtensa devices:
            { soc: "esp32", target: "xtensa-esp32-none-elf" },
            { soc: "esp32s2", target: "xtensa-esp32s2-none-elf" },
            { soc: "esp32s3", target: "xtensa-esp32s3-none-elf" },
          ]

    steps:
      - uses: actions/checkout@v4

      # Install the Rust toolchain for RISC-V devices:
      - if: ${{ !contains(fromJson('["esp32", "esp32s2", "esp32s3"]'), matrix.device.soc) }}
        uses: dtolnay/rust-toolchain@v1
        with:
          target: riscv32imc-unknown-none-elf,riscv32imac-unknown-none-elf,riscv32imafc-unknown-none-elf
          toolchain: nightly
          components: rust-src
      # Install the Rust toolchain for Xtensa devices:
      - if: contains(fromJson('["esp32", "esp32s2", "esp32s3"]'), matrix.device.soc)
        uses: esp-rs/xtensa-toolchain@v1.5
        with:
          buildtargets: ${{ matrix.device.soc }}
          default: true
          ldproxy: false

      - uses: Swatinem/rust-cache@v2

      # Build all supported examples for the low-power core first (if present):
      - if: contains(fromJson('["esp32c6", "esp32s2", "esp32s3"]'), matrix.device.soc)
        name: Build prerequisites (esp-lp-hal)
        run: cargo xtask build-examples esp-lp-hal ${{ matrix.device.soc }}

      # Make sure we're able to build the HAL without the default features
      # enabled:
      - name: Build (no features)
        run: |
          cargo xtask build-package \
            --no-default-features \
            --features=${{ matrix.device.soc }} \
            --target=${{ matrix.device.target }} \
            esp-hal
      # Build all supported examples for the specified device:
      - name: Build (examples)
        run: cargo xtask build-examples esp-hal ${{ matrix.device.soc }}
      # Ensure we can build the documentation for the specified device:
      - name: Build (documentation)
        run: cargo xtask build-documentation esp-hal ${{ matrix.device.soc }}

  esp-lp-hal:
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        soc: ["esp32c6", "esp32s2", "esp32s3"]

    steps:
      - uses: actions/checkout@v4

      # Install the Rust toolchain for RISC-V devices:
      - uses: dtolnay/rust-toolchain@v1
        with:
          target: riscv32imc-unknown-none-elf,riscv32imac-unknown-none-elf
          toolchain: nightly
          components: rust-src

      - uses: Swatinem/rust-cache@v2

      # Build all supported examples for the specified device:
      - name: Build examples
        run: cargo xtask build-examples esp-lp-hal ${{ matrix.soc }}
      # Ensure we can build the documentation for the specified device:
      - name: Build documentation
        run: cargo xtask build-documentation esp-lp-hal ${{ matrix.soc }}

  esp-riscv-rt:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@v1
        with:
          target: riscv32imc-unknown-none-elf,riscv32imac-unknown-none-elf,riscv32imafc-unknown-none-elf
          toolchain: nightly
          components: rust-src
      - uses: Swatinem/rust-cache@v2

      # Build for all RISC-V targets (no features):
      - name: Build esp-riscv-rt (riscv32imc, no features)
        run: cd esp-riscv-rt/ && cargo build -Zbuild-std=core --target=riscv32imc-unknown-none-elf
      - name: Build esp-riscv-rt (riscv32imac, no features)
        run: cd esp-riscv-rt/ && cargo build -Zbuild-std=core --target=riscv32imac-unknown-none-elf
      - name: Build esp-riscv-rt (riscv32imafc, no features)
        run: cd esp-riscv-rt/ && cargo build -Zbuild-std=core --target=riscv32imafc-unknown-none-elf
      # Build for all RISC-V targets (all features):
      - name: Build esp-riscv-rt (riscv32imc, all features)
        run: cd esp-riscv-rt/ && cargo build -Zbuild-std=core --target=riscv32imc-unknown-none-elf --features=ci
      - name: Build esp-riscv-rt (riscv32imac, all features)
        run: cd esp-riscv-rt/ && cargo build -Zbuild-std=core --target=riscv32imac-unknown-none-elf --features=ci
      - name: Build esp-riscv-rt (riscv32imafc, all features)
        run: cd esp-riscv-rt/ && cargo build -Zbuild-std=core --target=riscv32imafc-unknown-none-elf --features=ci
      # Ensure documentation can be built
      - name: rustdoc
        run: cd esp-riscv-rt/ && cargo doc

  # --------------------------------------------------------------------------
  # MSRV

  msrv-riscv:
    runs-on: ubuntu-latest
    env:
      RUSTC_BOOTSTRAP: 1

    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@v1
        with:
          target: riscv32imc-unknown-none-elf,riscv32imac-unknown-none-elf
          toolchain: ${{ env.MSRV }}
          components: rust-src
      - uses: Swatinem/rust-cache@v2

      # TODO:
      #  - Enable additional (all?) features for MSRV check

      # Verify the MSRV for all RISC-V chips.
      - name: msrv (esp-hal)
        run: |
          cargo xtask build-package --features=esp32c2 --target=riscv32imc-unknown-none-elf   esp-hal
          cargo xtask build-package --features=esp32c3 --target=riscv32imc-unknown-none-elf   esp-hal
          cargo xtask build-package --features=esp32c6 --target=riscv32imac-unknown-none-elf  esp-hal
          cargo xtask build-package --features=esp32h2 --target=riscv32imac-unknown-none-elf  esp-hal
      - name: msrv (esp-lp-hal)
        run: |
          cargo xtask build-package --features=esp32c6 --target=riscv32imac-unknown-none-elf esp-lp-hal
          cargo xtask build-package --features=esp32s2 --target=riscv32imc-unknown-none-elf  esp-lp-hal
          cargo xtask build-package --features=esp32s3 --target=riscv32imc-unknown-none-elf  esp-lp-hal

  msrv-xtensa:
    runs-on: ubuntu-latest
    env:
      RUSTC_BOOTSTRAP: 1

      # TODO:
      #  - Enable additional (all?) features for MSRV check

    steps:
      - uses: actions/checkout@v4
      - uses: esp-rs/xtensa-toolchain@v1.5
        with:
          ldproxy: false
          version: ${{ env.MSRV }}
      - uses: Swatinem/rust-cache@v2

      # Verify the MSRV for all Xtensa chips:
      - name: msrv (esp-hal)
        run: |
          cargo xtask build-package --toolchain=esp --features=esp32   --target=xtensa-esp32-none-elf   esp-hal
          cargo xtask build-package --toolchain=esp --features=esp32s2 --target=xtensa-esp32s2-none-elf esp-hal
          cargo xtask build-package --toolchain=esp --features=esp32s3 --target=xtensa-esp32s3-none-elf esp-hal

  # --------------------------------------------------------------------------
  # Lint

  clippy-riscv:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@v1
        with:
          toolchain: nightly
          targets: riscv32imc-unknown-none-elf,riscv32imac-unknown-none-elf,riscv32imafc-unknown-none-elf
          components: clippy,rust-src
      - uses: Swatinem/rust-cache@v2

      # Run 'cargo clippy' on all packages targeting RISC-V:
      ## esp-hal:
      - name: clippy (esp-hal, esp32c2)
        run: cd esp-hal && cargo clippy --features=esp32c2 --target=riscv32imc-unknown-none-elf -- -D warnings
      - name: clippy (esp-hal, esp32c3)
        run: cd esp-hal && cargo clippy --features=esp32c3 --target=riscv32imc-unknown-none-elf -- -D warnings
      - name: clippy (esp-hal, esp32c6)
        run: cd esp-hal && cargo clippy --features=esp32c6 --target=riscv32imac-unknown-none-elf -- -D warnings
      - name: clippy (esp-hal, esp32h2)
        run: cd esp-hal && cargo clippy --features=esp32h2 --target=riscv32imac-unknown-none-elf -- -D warnings
      ## esp-hal-smartled:
      - name: clippy (esp-hal-smartled)
        run: cd esp-hal-smartled && cargo clippy --features=esp32c6 --target=riscv32imac-unknown-none-elf -- -D warnings
      ## esp-lp-hal:
      - name: clippy (esp-lp-hal, esp32c6)
        run: cd esp-lp-hal && cargo clippy --features=esp32c6 --target=riscv32imac-unknown-none-elf -- -D warnings
      - name: clippy (esp-lp-hal, esp32s2)
        run: cd esp-lp-hal && cargo clippy --features=esp32s2 --target=riscv32imc-unknown-none-elf -- -D warnings
      - name: clippy (esp-lp-hal, esp32s3)
        run: cd esp-lp-hal && cargo clippy --features=esp32s3 --target=riscv32imc-unknown-none-elf -- -D warnings
      # esp-riscv-rt:
      - name: clippy (esp-riscv-rt)
        run: cd esp-riscv-rt && cargo clippy --target=riscv32imc-unknown-none-elf -- -D warnings

  clippy-xtensa:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
      - uses: esp-rs/xtensa-toolchain@v1.5
        with:
          default: true
          ldproxy: false
      - uses: Swatinem/rust-cache@v2

      # Run 'cargo clippy' on all packages targeting Xtensa:
      - name: clippy (esp-hal, esp32)
        run: cd esp-hal && cargo clippy -Zbuild-std=core --features=esp32 --target=xtensa-esp32-none-elf -- -D warnings
      - name: clippy (esp-hal, esp32s2)
        run: cd esp-hal && cargo clippy -Zbuild-std=core --features=esp32s2 --target=xtensa-esp32s2-none-elf -- -D warnings
      - name: clippy (esp-hal, esp32s3)
        run: cd esp-hal && cargo clippy -Zbuild-std=core --features=esp32s3 --target=xtensa-esp32s3-none-elf -- -D warnings

  rustfmt:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4
      # Some of the configuration items in 'rustfmt.toml' require the 'nightly'
      # release channel:
      - uses: dtolnay/rust-toolchain@v1
        with:
          toolchain: nightly
          components: rustfmt
      - uses: Swatinem/rust-cache@v2

      # Check the formatting of all packages:
      - name: rustfmt (esp-hal)
        run: cargo fmt --all --manifest-path=esp-hal/Cargo.toml -- --check
      - name: rustfmt (esp-hal-procmacros)
        run: cargo fmt --all --manifest-path=esp-hal-procmacros/Cargo.toml -- --check
      - name: rustfmt (esp-hal-smartled)
        run: cargo fmt --all --manifest-path=esp-hal-smartled/Cargo.toml -- --check
      - name: rustfmt (esp-lp-hal)
        run: cargo fmt --all --manifest-path=esp-lp-hal/Cargo.toml -- --check
      - name: rustfmt (esp-riscv-rt)
        run: cargo fmt --all --manifest-path=esp-riscv-rt/Cargo.toml -- --check
      - name: rustfmt (examples)
        run: cargo fmt --all --manifest-path=examples/Cargo.toml -- --check

  hil:
    name: HIL Test | ${{ matrix.target.soc }}
    runs-on: ubuntu-latest

    strategy:
      fail-fast: false
      matrix:
        target:
          # RISC-V devices:
          - soc: esp32c3
            rust-target: riscv32imc-unknown-none-elf
          - soc: esp32c6
            rust-target: riscv32imac-unknown-none-elf
          - soc: esp32h2
            rust-target: riscv32imac-unknown-none-elf
          # Xtensa devices:
          - soc: esp32s3

    steps:
      - uses: actions/checkout@v4
        # Install the Rust toolchain for RISC-V devices:

      - if: ${{ !contains(fromJson('["esp32", "esp32s2", "esp32s3"]'), matrix.target.soc) }}
        uses: dtolnay/rust-toolchain@v1
        with:
          target: ${{ matrix.target.rust-target }}
          toolchain: nightly
          components: rust-src
      # Install the Rust toolchain for Xtensa devices:
      - if: contains(fromJson('["esp32", "esp32s2", "esp32s3"]'), matrix.target.soc)
        uses: esp-rs/xtensa-toolchain@v1.5
        with:
          buildtargets: ${{ matrix.target.soc }}
          default: true
          ldproxy: false

      - uses: Swatinem/rust-cache@v2
      - run: cargo xtask build-examples hil-test ${{ matrix.target.soc }}