# Copyright (c) Microsoft Corporation. All rights reserved.
#
name: dependabot/refresh-cargo-lockfiles

on:
  pull_request_target:
    types: [opened, synchronize, reopened]
    branches: ["main"]

concurrency:
  group: dependabot-refresh-cargo-lockfiles-${{ github.event.pull_request.number }}
  cancel-in-progress: true

permissions:
  contents: read

env:
  CARGO_TERM_COLOR: always

jobs:
  refresh-cargo-lockfiles:
    permissions:
      contents: write
    if: >-
      github.event.pull_request.user.login == 'dependabot[bot]' &&
      github.event.pull_request.head.repo.full_name == github.repository
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd
        with:
          repository: ${{ github.event.pull_request.head.repo.full_name }}
          ref: ${{ github.event.pull_request.head.ref }}
          fetch-depth: 0
          persist-credentials: false

      - name: Setup Rust toolchain
        run: |
          rustup toolchain install 1.92.0 --profile minimal
          rustup override set 1.92.0
          cargo --version
          rustc --version

      - name: Refresh affected Cargo lockfiles
        shell: bash
        run: |
          set -euo pipefail

          base_sha="${{ github.event.pull_request.base.sha }}"
          head_sha="${{ github.event.pull_request.head.sha }}"

          mapfile -t changed_files < <(git diff --name-only "$base_sha" "$head_sha" -- ':(glob)**/Cargo.toml' ':(glob)**/Cargo.lock')

          if [ "${#changed_files[@]}" -eq 0 ]; then
            echo "No Cargo manifest or lockfile changes detected."
            exit 0
          fi

          declare -A manifests=()
          for path in "${changed_files[@]}"; do
            case "$path" in
              bindings/ffi/*)
                manifests["bindings/ffi/Cargo.toml"]=1
                ;;
              bindings/java/*)
                manifests["bindings/java/Cargo.toml"]=1
                ;;
              bindings/python/*)
                manifests["bindings/python/Cargo.toml"]=1
                ;;
              bindings/ruby/*)
                manifests["bindings/ruby/Cargo.toml"]=1
                ;;
              bindings/wasm/*)
                manifests["bindings/wasm/Cargo.toml"]=1
                ;;
              *)
                manifests["Cargo.toml"]=1
                ;;
            esac
          done

          for manifest in "${!manifests[@]}"; do
            echo "Refreshing lockfile for $manifest"
            cargo metadata \
              --config 'build.rustc="rustc"' \
              --config 'build.rustc-wrapper=""' \
              --config 'build.rustc-workspace-wrapper=""' \
              --format-version 1 \
              --all-features \
              --manifest-path "$manifest" > /dev/null
          done

          if [[ -n "${manifests[Cargo.toml]+x}" ]]; then
            echo "Refreshing lockfile for tests/ensure_no_std/Cargo.toml (thumbv7m-none-eabi)"
            cargo metadata \
              --config 'build.rustc="rustc"' \
              --config 'build.rustc-wrapper=""' \
              --config 'build.rustc-workspace-wrapper=""' \
              --format-version 1 \
              --manifest-path tests/ensure_no_std/Cargo.toml \
              --filter-platform thumbv7m-none-eabi > /dev/null
          fi

      - name: Commit lockfile refresh
        shell: bash
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          set -euo pipefail

          mapfile -t lockfiles < <(git ls-files -m -o --exclude-standard -- ':(glob)**/Cargo.lock')

          for lockfile in "${lockfiles[@]}"; do
            git add "$lockfile"
          done

          if git diff --cached --quiet; then
            echo "No Cargo lockfile changes required."
            exit 0
          fi

          auth_header=$(printf 'x-access-token:%s' "$GH_TOKEN" | base64 | tr -d '\n')
          trap 'git config --unset-all http.https://github.com/.extraheader' EXIT
          git config http.https://github.com/.extraheader "AUTHORIZATION: basic ${auth_header}"
          git config user.name "github-actions[bot]"
          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
          git commit -m "build(deps): refresh Cargo lockfiles"
          git push origin HEAD:${{ github.event.pull_request.head.ref }}