on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]
  merge_group:

name: Continuous integration

env:
  RUSTFLAGS: "--cfg CI_REDIS -Dwarnings"
  RUSTDOCFLAGS: "--cfg docsrs -Dwarnings"
  RUST_BACKTRACE: short

  CARGO_INCREMENTAL: 0
  CARGO_NET_RETRY: 10
  RUSTUP_MAX_RETRIES: 10

  # When updating this, also update:
  # - crates/teloxide-core/src/codegen.rs
  # - rust-toolchain.toml
  # - below in the test matrix
  rust_nightly: nightly-2024-03-20
  # When updating this, also update:
  # - **/README.md
  # - **/src/lib.rs
  # - down below in a matrix
  # - `Cargo.toml`
  # - **/CHANGELOG.md
  rust_msrv: 1.68.0

  CI: 1

jobs:
  # Depends on all action that are required for a "successful" CI run.
  ci-pass:
    name: CI succeeded
    runs-on: ubuntu-latest
    if: always()

    needs:
      - fmt
      - test
      - check-examples
      - clippy
      - doc

    steps:
      - name: Check whether the needed jobs succeeded or failed
        uses: re-actors/alls-green@release/v1
        with:
          jobs: ${{ toJSON(needs) }}

  fmt:
    name: fmt
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Rust ${{ env.rust_nightly }}
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ env.rust_nightly }}
          components: rustfmt

      - name: Cache Dependencies
        uses: Swatinem/rust-cache@v2

      - name: Check formatting
        run: |
          cargo fmt --all -- --check

  test:
    name: Test
    runs-on: ubuntu-latest
    strategy:
      matrix:
        rust:
          - stable
          - beta
          - nightly
          - msrv

        include:
          - rust: stable
            toolchain: stable
            features: "--features full"
          - rust: beta
            toolchain: beta
            features: "--features full"
          - rust: nightly
            toolchain: nightly-2024-03-20
            features: "--features full nightly"
          - rust: msrv
            toolchain: 1.68.0
            features: "--features full"

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Rust ${{ matrix.toolchain }}
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.toolchain }}

      - name: Cache Dependencies
        uses: Swatinem/rust-cache@v2

      # Generally MSRV dump is not considered a breaking change in by the Rust community.
      # Thus a minor or a patch version dump of a dependency of ours, can bump MSRV.
      # (remember that `cargo` uses newest semver compatible versions by default)
      #
      # It's silly to bump MSRV every time minor dependency update does (note that this update can
      # happen even after our crate is published; so users may need to downgrade crates in
      # `Cargo.lock` independently of how we test our crates), so we downgrade their versions in
      # MSRV CI specifically instead. This allows as to
      # 1. Not update MSRV unless we really need to
      # 2. Test newest (or at least newer) versions of crates in CI
      #
      # Example command: `cargo update -p atomic-write-file@0.1.3 --precise 0.1.2`
      - name: Downgrade deps for MSRV
        if: ${{ matrix.rust == 'msrv' }}
        run: |
            cargo update -p sqlx --precise 0.7.3
            cargo update -p atomic-write-file --precise 0.1.2
            exit 0
        

      # NB. Don't test (build) examples so we can use non-msrv features in them (--tests/--doc)
      - name: Compile
        run: |
          cargo +${{ matrix.toolchain }} test --tests --no-run --verbose ${{ matrix.features }}

      - name: Setup redis
        run: |
          sudo apt install redis-server
          redis-server --port 7777 > /dev/null &
          redis-server --port 7778 > /dev/null &
          redis-server --port 7779 > /dev/null &

      - name: Test unit & integration tests
        run: |
          cargo +${{ matrix.toolchain }} test --tests --verbose ${{ matrix.features }}

      - name: Test documentation tests
        if: ${{ matrix.rust != 'msrv' }}
        run: |
          cargo +${{ matrix.toolchain }} test --doc --verbose ${{ matrix.features }}

  check-examples:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Rust stable
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable

      - name: Cache Dependencies
        uses: Swatinem/rust-cache@v2

      - name: Check examples
        run: |
          cargo +stable check --examples --features full

      # TODO: prolly move it to a separate step?
      - name: Check with no default features
        run: |
          cargo +stable check --no-default-features

  clippy:
    name: Run linter
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Rust ${{ env.rust_nightly }}
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ env.rust_nightly }}
          components: clippy

      - name: Cache Dependencies
        uses: Swatinem/rust-cache@v2

      - name: clippy
        run: |
          cargo clippy --all-targets --features "full nightly"

  doc:
    name: check docs
    runs-on: ubuntu-latest

    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Install Rust ${{ env.rust_nightly }}
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ env.rust_nightly }}

      - name: Cache Dependencies
        uses: Swatinem/rust-cache@v2

      - name: rustdoc
        run: |
          cargo docs # from .cargo/config.toml