Content-Monorepo/.forgejo/workflows/build.yml

name: "Build"

on:
  push:
    branches: ["main"]
    paths:
      - 'modpacks/**'
      - 'datapacks/**'
      - 'src/actions/builder/**'
  pull_request:
    branches: ["main"]
    paths:
      - 'modpacks/**'
      - 'datapacks/**'
      - 'src/actions/builder/**'
  workflow_dispatch:

jobs:
  build:
    runs-on: technocality
    steps:
      - name: Checkout
        uses: actions/checkout@v5
        with:
          fetch-depth: 2
          filter: blob:none
          sparse-checkout: |
            modpacks
            datapacks
            src/actions/builder

      - name: Meta
        id: meta
        run: |
          set -eu
          echo "short_sha=$(git rev-parse --short HEAD)" >> $GITHUB_OUTPUT
          CHANGED=$(git diff-tree --no-commit-id --name-only -r HEAD)

          CHANGED_MODPACKS=$(echo "$CHANGED" | grep -E '^modpacks/[^/]+/' | cut -d/ -f1-2 | sort -u || true)
          CHANGED_DATAPACKS=$(echo "$CHANGED" | grep -E '^datapacks/[^/]+/' | cut -d/ -f1-2 | sort -u || true)

          {
            echo "has_modpacks=$( [ -n "$CHANGED_MODPACKS" ] && echo true || echo false )"
            echo "has_datapacks=$( [ -n "$CHANGED_DATAPACKS" ] && echo true || echo false )"
            echo "changed_modpacks<<EOF"
            echo "$CHANGED_MODPACKS"
            echo "EOF"
            echo "changed_datapacks<<EOF"
            echo "$CHANGED_DATAPACKS"
            echo "EOF"
          } >> "$GITHUB_OUTPUT"

      - name: Cache Builder Binaries
        id: cache-builder
        uses: actions/cache@v4
        with:
          path: ./builder-bin
          key: builder-v2-${{ runner.os }}-${{ hashFiles('src/actions/builder/**/*.rs', 'src/actions/builder/Cargo.toml', 'src/actions/builder/Cargo.lock') }}

      - name: Install Rust
        if: steps.cache-builder.outputs.cache-hit != 'true'
        uses: https://github.com/dtolnay/rust-toolchain@stable

      - name: Rust Cache
        if: steps.cache-builder.outputs.cache-hit != 'true'
        uses: https://github.com/Swatinem/rust-cache@v2
        with:
          workspaces: "src/actions/builder -> target"

      - name: Build Binaries
        if: steps.cache-builder.outputs.cache-hit != 'true'
        run: |
          cargo build --release --manifest-path src/actions/builder/Cargo.toml --bin builder --bin minify-json
          mkdir -p ./builder-bin
          cp src/actions/builder/target/release/{builder,minify-json} ./builder-bin/
          chmod +x ./builder-bin/builder ./builder-bin/minify-json

      - name: Cache Packwiz
        if: steps.meta.outputs.has_modpacks == 'true'
        id: cache-go
        uses: actions/cache@v4
        with:
          path: ~/go/bin
          key: go-bin-packwiz-v1-${{ runner.os }}

      - name: Setup Go
        if: steps.meta.outputs.has_modpacks == 'true' && steps.cache-go.outputs.cache-hit != 'true'
        uses: https://github.com/actions/setup-go@v5
        with: { go-version: 'stable', cache: true }

      - name: Install Packwiz
        if: steps.meta.outputs.has_modpacks == 'true' && steps.cache-go.outputs.cache-hit != 'true'
        run: go install github.com/packwiz/packwiz@latest

      - name: Add Go bin to PATH
        if: steps.meta.outputs.has_modpacks == 'true'
        run: echo "$HOME/go/bin" >> $GITHUB_PATH

      - name: Minify datapacks
        if: steps.meta.outputs.has_datapacks == 'true'
        run: |
          set -eu
          while IFS= read -r pack; do
            [ -n "$pack" ] || continue
            target="$pack/content"
            [ -d "$target" ] || continue
            (
              cp -r "$target" "$target.original"
              ./builder-bin/minify-json "$target"
            ) &
          done <<< "${{ steps.meta.outputs.changed_datapacks }}"
          wait

      - name: Minify modpacks
        if: steps.meta.outputs.has_modpacks == 'true'
        run: |
          set -eu
          while IFS= read -r pack; do
            [ -n "$pack" ] || continue
            for sub in "$pack"/*-{mr,cf}/config; do
              [ -d "$sub" ] || continue
              (
                cp -r "$sub" "$sub.original"
                ./builder-bin/minify-json "$sub"
              ) &
            done
          done <<< "${{ steps.meta.outputs.changed_modpacks }}"
          wait

      - name: Run Build
        run: ./builder-bin/builder "${{ steps.meta.outputs.short_sha }}"

      - name: Restore JSON sources
        if: always()
        run: |
          set -eu
          for orig in datapacks/*/content.original modpacks/*/*-{mr,cf}/config.original; do
            [ -d "$orig" ] || continue
            target="${orig%.original}"
            rm -rf "$target"
            mv "$orig" "$target"
          done

      - name: Upload
        uses: https://code.forgejo.org/forgejo/upload-artifact@v4
        with:
          name: "build-${{ steps.meta.outputs.short_sha }}"
          path: "artifacts/"
          compression-level: 0