package scanner

import (
	"path/filepath"

	"git.urbach.dev/cli/q/src/config"
	"git.urbach.dev/cli/q/src/errors"
	"git.urbach.dev/cli/q/src/fs"
	"git.urbach.dev/cli/q/src/token"
)

// scanImport scans an import.
func (s *Scanner) scanImport(file *fs.File, tokens token.List, i int) (int, error) {
	i++

	if tokens[i].Kind != token.Identifier {
		return i, errors.New(errors.ExpectedPackageName, file, tokens[i].Position)
	}

	packageName := tokens[i].Text(file.Bytes)

	if file.Imports == nil {
		file.Imports = make(map[string]*fs.Import, 4)
	}

	fullPath := filepath.Join(config.Library, packageName)

	file.Imports[packageName] = &fs.Import{
		Path:     packageName,
		FullPath: fullPath,
		Position: tokens[i].Position,
	}

	s.queueDirectory(fullPath, packageName)
	return i, nil
}