script.sh

#!/bin/bash
# https://docs.github.com/en/rest/pulls/comments?apiVersion=2022-11-28

comment_id=

createComment() {
echo "======= Running create comment ======="
    if [ -z "$ISSUE_NUMBER" ] || [ -z "$BODY" ]; then
        echo "Issue number and comment body are required."
        return
    fi

    # Fetch existing comments for the given issue
    existing_comments=$(gh pr view "$ISSUE_NUMBER" --json comments -q '.comments[].body')
    
    # Check if the new comment body already exists
    if echo "$existing_comments" | grep -qF "@$AUTHOR $BODY"; then
        echo "Comment already exists. Not creating again."
        return
    fi

    # Create a comment
    gh pr comment "$ISSUE_NUMBER" --body "@$AUTHOR $BODY"
    status=$?

    if [ "$status" -ne 0 ]; then
        echo "Failed to create a comment. Exit code: $status"
        return
    fi

    echo "Created a comment on issue number: $ISSUE_NUMBER"
}

# Function to find a comment
findComment() {
echo "======= Running find comment ======="
    if [ -z "$ISSUE_NUMBER" ]; then
        echo "Issue number is required."
        return
    fi

    if [ -z "$SEARCH_TERM" ] && [ -z "$AUTHOR" ]; then
        echo "Either search term or comment author is required."
        return
    fi

    comments=$(gh api \
        -H "Accept: application/vnd.github+json" \
        -H "X-GitHub-Api-Version: 2022-11-28" \
        "/repos/$REPO/issues/$ISSUE_NUMBER/comments"
    )
    status=$?

    if [ "$status" -ne 0 ]; then
        echo "Failed to retrieve comments. Exit code: $status"
        return
    fi

    comment_body=$(echo "$comments" | jq -r '.[0].body')
    echo "CommentBody: $comment_body"
    # Concatenate AUTHOR and SEARCH_TERM
    search_string="@$AUTHOR $SEARCH_TERM"
    
    if [ -n "$comment_body" ] && [ "$comment_body" = "$search_string" ]; then
        comment_id=$(echo "$comments" | jq -r '.[0].id')
        echo "Comment found for the search term '$SEARCH_TERM' and author '$AUTHOR'."
        echo "Comment ID: '$comment_id'."
    else
        echo "No comment found matching the search term $search_string"
    fi
}

# Function to delete a comment
deleteComment() {
echo "======= Running delete comment ======="
    if [ -z "$COMMENT_ID" ]; then
        echo "Comment ID is required."
        return
    fi

    # Delete the comment
    gh api \
        --method DELETE \
        -H "Accept: application/vnd.github+json" \
        -H "X-GitHub-Api-Version: 2022-11-28" \
        "/repos/$REPO/issues/comments/$COMMENT_ID"
    
    STATUS=$?

    if [ "$STATUS" -ne 0 ]; then
        echo "Failing deployment"
        exit $STATUS
    else
        echo "Deleted a comment. Comment ID: $COMMENT_ID"
    fi
}

case $ACTION_TYPE in
    "create")
        createComment ;;
    "update" | "append" | "prepend")
        updateComment ;;
    "find")
        findComment ;;
    "delete")
        deleteComment ;;
    *)
        echo "Invalid action type: $ACTION_TYPE" ;;
esac

# These outputs are used in other steps/jobs via action.yml
echo "comment_id=${comment_id}" >> "$GITHUB_OUTPUT"