package main

import (
        "flag"
        "fmt"
        "log"
        "os"
        "os/user"
        "path"
        "time"

        drive "code.google.com/p/google-api-go-client/drive/v2"
        "github.com/marcopaganini/godrive"
)

const (
        // Oauth cache file. Relative to the user's homedir
        authCacheFile = ".gdrive_example_auth.cache"

        // Our base directory inside Gdrive
        gdriveBaseDir = "testdir"
)

var (
        clientId     = flag.String("id", "", "Client ID")
        clientSecret = flag.String("secret", "", "Client Secret")
        requestURL   = flag.String("request_url", "https://www.googleapis.com/oauth2/v1/userinfo", "API request")
        code         = flag.String("code", "", "Authorization Code")
)
func main() {
        flag.Parse()

        usr, err := user.Current()
        if err != nil {
                log.Fatalf("Unable to get user information")
        }
        cachefile := path.Join(usr.HomeDir, authCacheFile)

        g, err := godrive.NewGoDrive(*clientId, *clientSecret, *code, drive.DriveScope, cachefile)
        if err != nil {
                log.Fatalf("Unable to initialize godrive: %v", err)
        }

        // Create a few directories for no good reason other than
        // show that we refer to files using familiar pathnames.
        dirs := [...]string{gdriveBaseDir, path.Join(gdriveBaseDir, "test1"), path.Join(gdriveBaseDir, "test2")}
        for _, d := range dirs {
                _, err := g.Mkdir(d)
                if err != nil {
                        log.Fatalf("Unable to create directory \"%s\", error %v\n", d, err)
                }
        }

        // Insert the /etc/group file into the newly created directories
        remoteFile := path.Join(gdriveBaseDir, "group")
        localFile := "/etc/group"

        r, err := os.Open(localFile)
        if err != nil {
                log.Fatalf("Unable to open", localFile)
        }
        defer r.Close()

        // Insert the file into Google Gdrive
        _, err = g.InsertInPlace(remoteFile, r)
        if err != nil {
                log.Fatalf("Error inserting \"%s\": %v", remoteFile, err)
        }

        // List the contents of the newly created directory
        dirlist, err := g.ListDir(gdriveBaseDir, "")
        if err != nil {
                log.Fatalf("Error listing directory \"%s\": %v", gdriveBaseDir, err)
        }

        for _, fileObj := range dirlist {
                filetype := "[file] "
                if godrive.IsDir(fileObj) {
                        filetype = "[dir]  "
                }
                create, _ := godrive.CreateDate(fileObj)
                modify, _ := godrive.CreateDate(fileObj)

                fmt.Printf("%s %s %s [%s]\n",
                        filetype,
                        create.Format(time.UnixDate),
                        modify.Format(time.UnixDate),
                        fileObj.Title)
        }
}