/*
 * Minio Cloud Storage, (C) 2015 Minio, Inc.
 *
 * 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 cmd

import (
	"net/url"
	"strconv"
)

// Parse bucket url queries
func getListObjectsV1Args(values url.Values) (prefix, marker, delimiter string, maxkeys int, encodingType string) {
	prefix = values.Get("prefix")
	marker = values.Get("marker")
	delimiter = values.Get("delimiter")
	if values.Get("max-keys") != "" {
		maxkeys, _ = strconv.Atoi(values.Get("max-keys"))
	} else {
		maxkeys = maxObjectList
	}
	encodingType = values.Get("encoding-type")
	return
}

// Parse bucket url queries for ListObjects V2.
func getListObjectsV2Args(values url.Values) (prefix, token, startAfter, delimiter string, fetchOwner bool, maxkeys int, encodingType string) {
	prefix = values.Get("prefix")
	token = values.Get("continuation-token")
	startAfter = values.Get("start-after")
	delimiter = values.Get("delimiter")
	if values.Get("max-keys") != "" {
		maxkeys, _ = strconv.Atoi(values.Get("max-keys"))
	} else {
		maxkeys = maxObjectList
	}
	fetchOwner = values.Get("fetch-owner") == "true"
	encodingType = values.Get("encoding-type")
	return
}

// Parse bucket url queries for ?uploads
func getBucketMultipartResources(values url.Values) (prefix, keyMarker, uploadIDMarker, delimiter string, maxUploads int, encodingType string) {
	prefix = values.Get("prefix")
	keyMarker = values.Get("key-marker")
	uploadIDMarker = values.Get("upload-id-marker")
	delimiter = values.Get("delimiter")
	if values.Get("max-uploads") != "" {
		maxUploads, _ = strconv.Atoi(values.Get("max-uploads"))
	} else {
		maxUploads = maxUploadsList
	}
	encodingType = values.Get("encoding-type")
	return
}

// Parse object url queries
func getObjectResources(values url.Values) (uploadID string, partNumberMarker, maxParts int, encodingType string) {
	uploadID = values.Get("uploadId")
	partNumberMarker, _ = strconv.Atoi(values.Get("part-number-marker"))
	if values.Get("max-parts") != "" {
		maxParts, _ = strconv.Atoi(values.Get("max-parts"))
	} else {
		maxParts = maxPartsList
	}
	encodingType = values.Get("encoding-type")
	return
}

// Parse listen bucket notification resources.
func getListenBucketNotificationResources(values url.Values) (prefix []string, suffix []string, events []string) {
	prefix = values["prefix"]
	suffix = values["suffix"]
	events = values["events"]
	return prefix, suffix, events
}

// Validates filter values
func validateFilterValues(values []string) (err APIErrorCode) {
	for _, value := range values {
		if !IsValidObjectPrefix(value) {
			return ErrFilterValueInvalid
		}
	}
	return ErrNone
}
