name: PR Prerequisites

on:
  pull_request:
    branches:
      - main
      - develop

env:
  LUA_VERSION: "5.1"
  LUA_LANGUAGE_SERVER_VERSION: "3.19.1"

jobs:
  bundles_without_error:
    runs-on: ubuntu-latest
    name: Bundles Without Errors
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up Lua
        uses: leafo/gh-actions-lua@v13
        with:
          luaVersion: ${{ env.LUA_VERSION }}
                
      - name: Compile Spearhead
        uses: https://git.dutchie031.com/dutchie031/DcsMissionScriptingTools/github-action@action/v0
        with:
          source-root: ./src
          output-file: ./output/spearhead.lua

      - name: Verify Compiled Lua Syntax
        run: lua -e "assert(loadfile('./output/spearhead.lua'))"

      - name: Set up Luarocks
        uses: leafo/gh-actions-luarocks@v4

      - name: Install luacheck
        run: luarocks install luacheck

      - name: Lint Compiled Output
        run: luacheck ./output/spearhead.lua
      
  lua_check: 
    runs-on: ubuntu-latest
    name: Lua Check
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Set up Lua
        uses: leafo/gh-actions-lua@v13
        with:
          luaVersion: ${{ env.LUA_VERSION }}

      - name: Install Dcs Plugins
        uses: https://git.dutchie031.com/dutchie031/DcsMissionScriptingTools/github-actions/install-lua-addon@install-lua-addon/v1
        with: 
          destination-path: "./.vscode/lua-addons" ##same as local so .luarc.json can be the same

      - name: Verify Dcs Plugins Installation
        run: ls -la ./.vscode/lua-addons

      - name: Install lua-language-server
        run: |
          mkdir -p ./luals
          # For Ubuntu/Debian
          wget https://github.com/LuaLS/lua-language-server/releases/download/${{ env.LUA_LANGUAGE_SERVER_VERSION }}/lua-language-server-${{ env.LUA_LANGUAGE_SERVER_VERSION }}-linux-x64.tar.gz
          tar -xzf lua-language-server-*.tar.gz -C ./luals
          rm lua-language-server-*.tar.gz

      - name: Verify Lua Language Server Installation
        run: ./luals/bin/lua-language-server --version

      - name: Resolve Addon Paths And Update Config
        run: | 
          ADDONS_PATH=$(realpath ./.vscode/lua-addons)
          ADDON_ROOT=$(find "$ADDONS_PATH" -mindepth 1 -maxdepth 1 -type d | head -n 1)
          LIBRARY_PATH="$ADDON_ROOT/library"

          echo "addons-path: $ADDONS_PATH"
          echo "addon-root: $ADDON_ROOT"
          echo "library-path: $LIBRARY_PATH"

          test -d "$ADDON_ROOT"
          test -d "$LIBRARY_PATH"
          test -f "$LIBRARY_PATH/DcsTypes.lua"

          jq \
            --arg addons_path "$ADDONS_PATH" \
            --arg addon_root "$ADDON_ROOT" \
            --arg library_path "$LIBRARY_PATH" \
            '.Lua.workspace.library = [$library_path, $addon_root] | .Lua.workspace.userThirdParty = [$addons_path]' \
            ./.luarc.json > ./.luarc.json.tmp && mv ./.luarc.json.tmp ./.luarc.json

      - name: Show Config
        run: cat ./.luarc.json

      - name: LuaLS Smoke Test For Addon Globals
        run: |
          cat > ./_luals_smoke_test.lua << 'EOF'
          local now = timer.getTime()
          local base = Airbase.getByName("TEST")
          local side = coalition.side.RED
          return now, base, side
          EOF

          set -o pipefail

          echo "=== smoke(root) ==="
          ./luals/bin/lua-language-server --check ./_luals_smoke_test.lua --checklevel=Warning --configpath ./.luarc.json 2>&1 | tee ./_luals_smoke_root.log
          if grep -q "undefined-global" ./_luals_smoke_root.log; then
            echo "Root smoke test reported undefined-global"
            exit 1
          fi

          rm -f ./_luals_smoke_test.lua

      - name: Run Lua Language Server
        run: |
          set -euo pipefail
          echo "Checking Lua files one-by-one to keep addon globals resolution consistent"
          while IFS= read -r -d '' file; do
            echo "Checking $file"
            ./luals/bin/lua-language-server --check "$file" --checklevel=Warning --configpath ./.luarc.json
          done < <(find ./src -type f -name '*.lua' -print0)