package cmdVM

import (
	u "nexus-client/utils"
	libclient "nexus-libclient/vm"

	"os"
)

type ImportDir struct {
	Name string
}

func (cmd *ImportDir) GetName() string {
	return cmd.Name
}

func (cmd *ImportDir) GetDesc() []string {
	return []string{
		"Copies a local directory (or file) and all its content into one or more VMs.",
		"If not the VM's owner: requires VM_WRITEFS VM access capability or VM_WRITEFS_ANY user capability."}
}

func (cmd *ImportDir) PrintUsage() {
	for _, desc := range cmd.GetDesc() {
		u.PrintlnErr(desc)
	}
	u.PrintlnErr("―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――")
	u.PrintlnErr("USAGE: ", cmd.GetName(), " [ID ...] [regex ...] localDir vmDir")
	u.PrintlnErr("―――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――――")
	const usage string = `localDir    Directory (or file) on the local filesystem to be copied into the VM.
vmdir       Directory in the VM where localDir will be copied.
IMPORTANT: to avoid disk corruption, files can only be imported into non-running VMs.`
	u.PrintlnErr(usage)
	u.PrintlnErr("")
	printRegexUsageDetails()
}

func (cmd *ImportDir) Run(args []string) int {
	argc := len(args)
	if argc < 3 {
		cmd.PrintUsage()
		return 1
	}

	vmDir := args[argc-1]
	localDir := args[argc-2]

	vms, err := getFilteredVMs(libclient.GetImportFileVMs, args[:argc-2])
	if err != nil {
		u.PrintlnErr(err)
		return 1
	}

	if len(vms) == 0 {
		u.PrintlnErr("Error: VM(s) not found.")
		return 1
	}

	statusCode := 0

	tmpTarGzFile, err := u.GetRandomTempFilename()
	if err != nil {
		u.PrintlnErr(err)
		return 1
	}
	tmpTarGzFile += ".tar.gz"
	defer os.Remove(tmpTarGzFile)
	if err := u.TarGzDir(localDir, tmpTarGzFile); err != nil {
		u.PrintlnErr(err)
		return 1
	}

	for _, vm := range vms {
		err := libclient.VMImportArchive(vm.ID.String(), vmDir, tmpTarGzFile)
		if err != nil {
			u.PrintlnErr("Failed copying \"" + localDir + "\" into \"" + vmDir + "\" in VM \"" + vm.Name + "\": " + err.Error())
			statusCode = 1
		} else {
			u.Println("Copied \"" + localDir + "\" into \"" + vmDir + "\" in VM \"" + vm.Name + "\"")
		}
	}

	return statusCode
}