// Copyright 2022 The Casdoor Authors. All Rights Reserved.
//
// 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 util

import (
	"slices"
	"strings"
)

func DeleteVal(values []string, val string) []string {
	newValues := []string{}
	for _, v := range values {
		if v != val {
			newValues = append(newValues, v)
		}
	}
	return newValues
}

func ReplaceVal(values []string, oldVal string, newVal string) []string {
	newValues := []string{}
	for _, v := range values {
		if v == oldVal {
			newValues = append(newValues, newVal)
		} else {
			newValues = append(newValues, v)
		}
	}
	return newValues
}

func InSlice(slice []string, elem string) bool {
	return slices.Contains(slice, elem)
}

func ReturnAnyNotEmpty(strs ...string) string {
	for _, str := range strs {
		if str != "" {
			return str
		}
	}
	return ""
}

func HaveIntersection(arr1 []string, arr2 []string) bool {
	elements := make(map[string]bool)

	for _, str := range arr1 {
		elements[str] = true
	}

	for _, str := range arr2 {
		if elements[str] {
			return true
		}
	}

	return false
}

// HasTagInSlice checks if a comma-separated tag string contains any tag that matches the slice.
// For example, if userTag is "default-policy,project-admin" and slice is ["default-policy", "project-admin"],
// it will return true because "default-policy" and "project-admin" are both in the slice.
func HasTagInSlice(slice []string, userTag string) bool {
	if userTag == "" {
		return false
	}

	// Split the comma-separated tags and check each one
	userTags := strings.Split(userTag, ",")
	for _, tag := range userTags {
		trimmedTag := strings.TrimSpace(tag)
		if trimmedTag != "" && slices.Contains(slice, trimmedTag) {
			return true
		}
	}

	return false
}