token_consistency.yaml

name: Check consistency of tokens.txt file

# Define the file paths under `paths` to trigger this check only when specific files are modified.
# This script will then execute checks only on files that have changed, rather than all files listed in `paths`.

# **Note** : To add a new token file for checks, include its path in:
# - `on` -> `push` and `pull_request` sections
# - `jobs` -> `check_tokens` -> `steps` -> Set global variable for multiple tokens.txt paths -> `TOKENS_FILES`

on:
  push:
    paths:
      - "chebai/preprocessing/bin/smiles_token/tokens.txt"
      - "chebai/preprocessing/bin/smiles_token_unlabeled/tokens.txt"
      - "chebai/preprocessing/bin/selfies/tokens.txt"
      - "chebai/preprocessing/bin/protein_token/tokens.txt"
      - "chebai/preprocessing/bin/graph_properties/tokens.txt"
      - "chebai/preprocessing/bin/graph/tokens.txt"
      - "chebai/preprocessing/bin/deepsmiles_token/tokens.txt"
  pull_request:
    paths:
      - "chebai/preprocessing/bin/smiles_token/tokens.txt"
      - "chebai/preprocessing/bin/smiles_token_unlabeled/tokens.txt"
      - "chebai/preprocessing/bin/selfies/tokens.txt"
      - "chebai/preprocessing/bin/protein_token/tokens.txt"
      - "chebai/preprocessing/bin/graph_properties/tokens.txt"
      - "chebai/preprocessing/bin/graph/tokens.txt"
      - "chebai/preprocessing/bin/deepsmiles_token/tokens.txt"

jobs:
  check_tokens:
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v2

      - name: Get list of changed files
        id: changed_files
        run: |
          git fetch origin dev

          # Get the list of changed files compared to origin/dev and save them to a file
          git diff --name-only origin/dev > changed_files.txt

          # Print the names of changed files on separate lines
          echo "Changed files:"
          while read -r line; do
            echo "Changed File name : $line"
          done < changed_files.txt

      - name: Set global variable for multiple tokens.txt paths
        run: |
          # All token files that needs to checked must be included here too, same as in `paths`.
          TOKENS_FILES=(
            "chebai/preprocessing/bin/smiles_token/tokens.txt"
            "chebai/preprocessing/bin/smiles_token_unlabeled/tokens.txt"
            "chebai/preprocessing/bin/selfies/tokens.txt"
            "chebai/preprocessing/bin/protein_token/tokens.txt"
            "chebai/preprocessing/bin/graph_properties/tokens.txt"
            "chebai/preprocessing/bin/graph/tokens.txt"
            "chebai/preprocessing/bin/deepsmiles_token/tokens.txt"
          )
          echo "TOKENS_FILES=${TOKENS_FILES[*]}" >> $GITHUB_ENV

      - name: Process only changed tokens.txt files
        run: |
          # Convert the TOKENS_FILES environment variable into an array
          TOKENS_FILES=(${TOKENS_FILES})

          # Iterate over each token file path
          for TOKENS_FILE_PATH in "${TOKENS_FILES[@]}"; do
            # Check if the current token file path is in the list of changed files
            if grep -q "$TOKENS_FILE_PATH" changed_files.txt; then
              echo "----------------------- Processing $TOKENS_FILE_PATH -----------------------"

              # Get previous tokens.txt version
              git fetch origin dev
              git diff origin/dev -- $TOKENS_FILE_PATH > tokens_diff.txt || echo "No previous tokens.txt found for $TOKENS_FILE_PATH"

              # Check for deleted or added lines in tokens.txt
              if [ -f tokens_diff.txt ]; then

                # Check for deleted lines (lines starting with '-')
                deleted_lines=$(grep '^-' tokens_diff.txt | grep -v '^---' | sed 's/^-//' || true)
                if [ -n "$deleted_lines" ]; then
                  echo "Error: Lines have been deleted from $TOKENS_FILE_PATH."
                  echo -e "Deleted Lines: \n$deleted_lines"
                  exit 1
                fi

                # Check for added lines (lines starting with '+')
                added_lines=$(grep '^+' tokens_diff.txt | grep -v '^+++' | sed 's/^+//' || true)
                if [ -n "$added_lines" ]; then

                  # Count how many lines have been added
                  num_added_lines=$(echo "$added_lines" | wc -l)

                  # Get last `n` lines (equal to num_added_lines) of tokens.txt
                  last_lines=$(tail -n "$num_added_lines" $TOKENS_FILE_PATH)

                  # Check if the added lines are at the end of the file
                  if [ "$added_lines" != "$last_lines" ]; then

                    # Find lines that were added but not appended at the end of the file
                    non_appended_lines=$(diff <(echo "$added_lines") <(echo "$last_lines") | grep '^<' | sed 's/^< //')

                    echo "Error: New lines have been added to $TOKENS_FILE_PATH, but they are not at the end of the file."
                    echo -e "Added lines that are not at the end of the file: \n$non_appended_lines"
                    exit 1
                  fi
                fi

                if [ "$added_lines" == "" ]; then
                    echo "$TOKENS_FILE_PATH validation successful: No lines were deleted, and no new lines were added."
                else
                    echo "$TOKENS_FILE_PATH validation successful: No lines were deleted, and new lines were correctly appended at the end."
                fi
              else
                echo "No previous version of $TOKENS_FILE_PATH found."
              fi
            else
              echo "$TOKENS_FILE_PATH was not changed, skipping."
            fi
          done