name: Rust Build Cache Test

on:
  push:
    branches:
      - main
      - master
  pull_request:

env:
  CARGO_TERM_COLOR: always

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: https://gitea.com/actions/checkout@v4

      - name: Install Rust
        run: |
          curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
          source "$HOME/.cargo/env"

      - name: Get Cargo lock hash
        id: hash
        run: |
          source "$HOME/.cargo/env"
          echo "hash=$(cat Cargo.lock Cargo.toml | sha256sum | cut -d' ' -f1)" >> $GITHUB_OUTPUT

      - name: Cache cargo
        uses: https://gitea.com/actions/cache@v3
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: rust-${{ runner.os }}-${{ steps.hash.outputs.hash }}
          restore-keys: |
            rust-${{ runner.os }}-

      - name: Show cache info (before build)
        run: |
          source "$HOME/.cargo/env"
          echo "=== Cache Key ==="
          echo "rust-${{ runner.os }}-${{ steps.hash.outputs.hash }}"
          echo ""
          echo "=== Cargo cache directories (before build) ==="
          du -sh ~/.cargo/registry ~/.cargo/git target 2>/dev/null || echo "Dirs not yet present"
          echo ""
          echo "=== Cargo/Rust versions ==="
          cargo --version
          rustc --version

      - name: Build
        run: |
          source "$HOME/.cargo/env"
          cargo build --verbose

      - name: Run
        run: |
          source "$HOME/.cargo/env"
          cargo run

      - name: Check cache after build
        run: |
          echo "=== After build ==="
          echo "~/.cargo/registry: $(du -sh ~/.cargo/registry 2>/dev/null | cut -f1)"
          echo "~/.cargo/git: $(du -sh ~/.cargo/git 2>/dev/null | cut -f1)"
          echo "target: $(du -sh target 2>/dev/null | cut -f1)"