/*
 * Minio Cloud Storage, (C) 2016 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 main

import (
	"fmt"
	"runtime"
	"strings"

	"github.com/minio/mc/pkg/console"
)

// Documentation links, these are part of message printing code.
const (
	mcQuickStartGuide   = "https://docs.minio.io/docs/minio-client-quick-start-guide"
	goQuickStartGuide   = "https://docs.minio.io/docs/golang-client-quickstart-guide"
	jsQuickStartGuide   = "https://docs.minio.io/docs/javascript-client-quickstart-guide"
	javaQuickStartGuide = "https://docs.minio.io/docs/java-client-quickstart-guide"
	pyQuickStartGuide   = "https://docs.minio.io/docs/python-client-quickstart-guide"
)

// generates format string depending on the string length and padding.
func getFormatStr(strLen int, padding int) string {
	formatStr := fmt.Sprintf("%ds", strLen+padding)
	return "%" + formatStr
}

// Prints the formatted startup message.
func printStartupMessage(endPoints []string) {
	printServerCommonMsg(endPoints)
	printCLIAccessMsg(endPoints[0])
	printObjectAPIMsg()
}

// Prints common server startup message. Prints credential, region and browser access.
func printServerCommonMsg(endPoints []string) {
	// Get saved credentials.
	cred := serverConfig.GetCredential()

	// Get saved region.
	region := serverConfig.GetRegion()

	endPointStr := strings.Join(endPoints, "  ")
	// Colorize the message and print.
	console.Println(colorMagenta("\nEndpoint: ") + colorGreen(fmt.Sprintf(getFormatStr(len(endPointStr), 1), endPointStr)))
	console.Println(colorMagenta("AccessKey: ") + colorWhite(fmt.Sprintf("%s ", cred.AccessKeyID)))
	console.Println(colorMagenta("SecretKey: ") + colorWhite(fmt.Sprintf("%s ", cred.SecretAccessKey)))
	console.Println(colorMagenta("Region: ") + colorWhite(fmt.Sprintf(getFormatStr(len(region), 3), region)))

	console.Println(colorMagenta("\nBrowser Access:"))
	console.Println(colorGreen(fmt.Sprintf(getFormatStr(len(endPointStr), 3), endPointStr)))
}

// Prints startup message for command line access. Prints link to our documentation
// and custom platform specific message.
func printCLIAccessMsg(endPoint string) {
	// Get saved credentials.
	cred := serverConfig.GetCredential()

	// Configure 'mc', following block prints platform specific information for minio client.
	console.Println(colorMagenta("\nCommand-line Access: ") + colorWhite(mcQuickStartGuide))
	if runtime.GOOS == "windows" {
		mcMessage := fmt.Sprintf("$ mc.exe config host add myminio %s %s %s", endPoint, cred.AccessKeyID, cred.SecretAccessKey)
		console.Println(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
	} else {
		mcMessage := fmt.Sprintf("$ ./mc config host add myminio %s %s %s", endPoint, cred.AccessKeyID, cred.SecretAccessKey)
		console.Println(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
	}
}

// Prints startup message for Object API acces, prints link to our SDK documentation.
func printObjectAPIMsg() {
	console.Println("\nObject API (Amazon S3 compatible):")
	console.Println("   Go: " + fmt.Sprintf(getFormatStr(len(goQuickStartGuide), 8), goQuickStartGuide))
	console.Println("   Java: " + fmt.Sprintf(getFormatStr(len(javaQuickStartGuide), 6), javaQuickStartGuide))
	console.Println("   Python: " + fmt.Sprintf(getFormatStr(len(pyQuickStartGuide), 4), pyQuickStartGuide))
	console.Println("   JavaScript: " + jsQuickStartGuide)
}