package processors

import (
	"path/filepath"

	"github.com/golangci/golangci-lint/v2/pkg/logutils"
	"github.com/golangci/golangci-lint/v2/pkg/result"
)

var _ Processor = (*PathAbsoluter)(nil)

// PathAbsoluter ensures that representation of path are absolute.
type PathAbsoluter struct {
	log logutils.Log
}

func NewPathAbsoluter(log logutils.Log) *PathAbsoluter {
	return &PathAbsoluter{log: log.Child(logutils.DebugKeyPathAbsoluter)}
}

func (*PathAbsoluter) Name() string {
	return "path_absoluter"
}

func (p *PathAbsoluter) Process(issues []result.Issue) ([]result.Issue, error) {
	return transformIssues(issues, func(issue *result.Issue) *result.Issue {
		if filepath.IsAbs(issue.FilePath()) {
			return issue
		}

		absPath, err := filepath.Abs(issue.FilePath())
		if err != nil {
			p.log.Warnf("failed to get absolute path for %q: %v", issue.FilePath(), err)
			return nil
		}

		newIssue := issue
		newIssue.Pos.Filename = absPath

		return newIssue
	}), nil
}

func (*PathAbsoluter) Finish() {}
