// Copyright 2021 CloudWeGo Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package parser

import (
	"fmt"
	"path/filepath"
	"strings"

	"github.com/cloudwego/thriftgo/utils/dir_utils"
)

func normalizeFilename(fn string) string {
	abs, err := filepath.Abs(fn)
	if err != nil {
		return fn
	}
	base, err := dir_utils.Getwd()
	if err != nil {
		return abs
	}
	ref, err := filepath.Rel(base, abs)
	if err != nil {
		return abs
	}
	return ref
}

func refName(filename string) string {
	n := strings.Split(filepath.Base(filename), ".")
	return strings.Join(n[:len(n)-1], ".")
}

func addField(fields []*Field, field *Field) []*Field {
	if field.ID == NOTSET {
		if len(fields) > 0 {
			field.ID = fields[len(fields)-1].ID + 1
		} else {
			field.ID = 1
		}
	}
	return append(fields, field)
}

func checkrule(node *node32, rule pegRule) (*node32, error) {
	if node.pegRule != rule {
		return nil, fmt.Errorf("mismatch rule: " + rul3s[node.pegRule])
	}
	return node.up, nil
}
