package bokoworker

import (
	"encoding/json"
	"os"
	"path/filepath"
	"strings"

	"github.com/google/uuid"
	"imuslab.com/bokofs/bokofsd/mod/bokofs/bokofile"
)

/*
	Boko Worker

	A boko worker is an instance of WebDAV file server that serves a specific
	disk partition or subpath in which the user can interact with the disk
	via WebDAV interface
*/

type Worker struct {
	/* Worker Properties */
	RootPath  string //The root path (also act as ID) request by this worker, e.g. /disk1
	DiskUUID  string // Disk UUID, when provided, will be used instead of disk path
	DiskPath  string // Disk device path (e.g. /dev/sda1), Disk UUID will have higher priority
	Subpath   string // Subpath to serve, default is root
	ReadOnly  bool   //Label this worker as read only
	AutoMount bool   //Automatically mount the disk if not mounted

	/* Private Properties */
	Filesystem *bokofile.RouterDir
}

// GetDefaultWorker Generate and return a default worker serving ./ (CWD)
func GetDefaultWorker(rootdir string) (*Worker, error) {
	if !strings.HasPrefix(rootdir, "/") {
		rootdir = "/" + rootdir
	}

	mountPath, _ := filepath.Abs("./")
	fs, err := bokofile.CreateRouterFromDir(mountPath, rootdir, false)
	if err != nil {
		return nil, err
	}

	return &Worker{
		RootPath:  rootdir,
		DiskUUID:  "",
		DiskPath:  "",
		Subpath:   mountPath,
		ReadOnly:  false,
		AutoMount: false,

		Filesystem: fs,
	}, nil
}

func GetWorkerFromConfig(configFilePath string) (*Worker, error) {
	randomRootPath := uuid.New().String()
	thisWorker, _ := GetDefaultWorker("/" + randomRootPath)
	configFile, err := os.ReadFile(configFilePath)
	if err != nil {
		return nil, err
	}

	//parse the config file into thisWorker
	err = json.Unmarshal(configFile, &thisWorker)
	if err != nil {
		return nil, err
	}

	//TODO: Start the worker
	return thisWorker, nil
}