document.addEventListener("contextmenu", (e) => {

    e.preventDefault()
})

explorer.createWindow(() => {

    var inCopyOrCut = null;

    const View = new ViewWindow({
        title: `<i class="fa fa-folder"></i> Gestionnaire de fichiers`,
        width: "1000px",
        height: "600px"
    })


    console.log("")

    

    
    
    

    goHomePath()
    function goHomePath() {
        const rFiles = post("FX_GET", "homepath")

        rFiles.then((result) => {
            loadFiles(result)
        })
    }

    function goSharePath() {
        const rFiles = post("FX_GET", "sharepath")
        
        rFiles.then((result) => {
            loadFiles(result)
        })
    }
   

    View.setContent(`
        <div class="fx-window">
            <div class='fx-bar'>
                <span id='${View.getViewTitle()}_home' class='btn-cover'><i class='fa fa-home'></i></span>
                <span id='${View.getViewTitle()}_sharebtn' class='btn-cover'><i class="fa-solid fa-share-from-square"></i></span>
                <input class='fx-root-input' type="text" id='${View.getViewTitle()}_rootInput'>
                <div class='fx-bar-actions'>
                <button id='${View.getViewTitle()}_newFolder' class='btn blue'><span><i class='fa fa-folder'></i> Nouv. dossier</span></button>
                <button id='${View.getViewTitle()}_newFile' class='btn green'><span><i class="fa-solid fa-file-arrow-up"></i> Nouveau</span></button>
                </div> 
            </div>
            <div id='${View.getViewTitle()}_explorer' class='fx-explorer'>
            </div>
        </div>
        
    `)

    const rootInput = getID(View.getViewTitle() + '_rootInput')
    const explorer = getID(View.getViewTitle() + '_explorer')
    const newFolder = getID(View.getViewTitle() + '_newFolder')
    const newFile = getID(View.getViewTitle() + '_newFile')
    const home = getID(View.getViewTitle() + '_home')
    const sharebtn = getID(View.getViewTitle() + '_sharebtn')

    

    View.ViewWindowDiv.addEventListener("contextmenu", () => {
      
        
        if(inCopyOrCut != null) {

                const dMenu = new DroppableMenu()
                dMenu.add("paste", "<i class='fa fa-paste'></i> Coller")
                dMenu.show()
        
                dMenu.get("paste").addEventListener("click", () => {
                    console.log({newPath: rootInput.value, action: inCopyOrCut.action, file: inCopyOrCut.file, name: inCopyOrCut.file.name, orginalPath: inCopyOrCut.orginalPath})
                    dMenu.hide()
                    const reqFiles = post("FX_PASTE", {newPath: rootInput.value, action: inCopyOrCut.action, file: inCopyOrCut.file, name: inCopyOrCut.file.name, orginalPath: inCopyOrCut.orginalPath})
                    reqFiles.then((result) => {
                        if(result == "OK") {
                            const reqFiles = post("FX_GET", rootInput.value)
                            reqFiles.then((result) => {
                                loadFiles(result)
                            })
                        } else if(result == "NOT_PERMITTED") {
                            const reqFiles = post("FX_GET", rootInput.value)
                            reqFiles.then((result) => {
                                loadFiles(result)
                            })
                            View.createPopup({
                                title: `<i class='fa fa-warning'></i> Erreur`,
                                content: `<p class='yellow'>Vous n'avez pas les permissions pour coller ce fichier.</p>`
                            })
                        } else {
                            const reqFiles = post("FX_GET", rootInput.value)
                            reqFiles.then((result) => {
                                loadFiles(result)
                            })
                            View.createPopup({
                                title: `<i class='fa fa-warning'></i> Erreur`,
                                content: `<p class='yellow'>Une erreur est survenue.</p>`
                            })
                        }
                        })
        
                        inCopyOrCut = null
                })
            } else {
                console.log("LISTENER : " + rootInput.value)
    
            }
        
    })

    home.addEventListener("click", () => {
        
        goHomePath()

    })

    sharebtn.addEventListener("click", () => {

        goSharePath()

    })  

    newFolder.addEventListener("click", () => {

        View.createPopup({
            title: `<i class='fa fa-folder'></i> Nouveau dossier`,
            content: `
                <input type='text' class='field' id='${View.getViewTitle()}_foldername'>
                <div id='${View.getViewTitle()}_folderInfo'></div>
                <button class='btn green' id='${View.getViewTitle()}_foldercreate'><span><i class='fa fa-add'></i> Créer</span></button>
        `}) 

        const foldername = getID(View.getViewTitle() + "_foldername")
        const foldercreate = getID(View.getViewTitle() + "_foldercreate")
        const folderInfo = new TextResponse(View.getViewTitle() + "_folderInfo")

        folderInfo.setSize("13px")
      

        foldercreate.addEventListener("click", () => {
            folderInfo.clear()
            if(foldername.value.length < 1) {
                folderInfo.err("Le nom du dossier est trop court.")
                return
            }

            const regex = new RegExp(/^[a-zA-Z0-9-_]+$/)

            if(!regex.test(foldername.value) | foldername.value.replace(/\s/g, '').length < 1) {
                folderInfo.err("Le nom du dossier est invalide.")
                return
            }

            const reqFiles = post("FX_NEW_FOLDER", rootInput.value + "/" +  foldername.value)
            reqFiles.then((result) => {
                if(result == "OK") {
                    View.destroyPopup(`<i class="fa fa-folder"></i> Nouveau dossier`)
                    const reqFiles = post("FX_GET", rootInput.value)
                    reqFiles.then((result) => {
                        loadFiles(result)
                    })
                } else if(result == "EXIST") {
                    folderInfo.err("Le dossier existe déjà.")
                } else if(result == "NOT_PERMITTED") {
                    folderInfo.err("Vous n'avez pas les permissions pour créer un dossier ici.")
                } else {
                    folderInfo.err("Une erreur est survenue.")
                }
            })

         
        })
        
        
    
    })


    // Create a new file with a popup wth 2 options, upload or create, if create give a input name or if upload, upload a file

    newFile.addEventListener("click", () => {

        View.createPopup({
            title: `<i class='fa-solid fa-file-arrow-up'></i> Nouveau fichier`,
            content: `
                <input type='text' class='field' id='${View.getViewTitle()}_filename'>
                <div id='${View.getViewTitle()}_fileInfo'></div>
                <button class='btn green' id='${View.getViewTitle()}_filecreate'><span><i class='fa fa-add'></i> Créer</span></button>
                <button class='btn blue' id='${View.getViewTitle()}_fileupload'><span><i class='fa fa-upload'></i> Upload</span></button>
        `})

        const filename = getID(View.getViewTitle() + "_filename")
        const filecreate = getID(View.getViewTitle() + "_filecreate")
        const fileupload = getID(View.getViewTitle() + "_fileupload")
        const fileInfo = new TextResponse(View.getViewTitle() + "_fileInfo")

        fileInfo.setSize("13px")

        filecreate.addEventListener("click", () => {

            fileInfo.clear()
            if(filename.value.length < 1) {
                fileInfo.err("Le nom du fichier est trop court.")
                return
            }

            const regex = new RegExp(/^[a-zA-Z0-9-_.]+$/)

            if(!regex.test(filename.value) | filename.value.replace(/\s/g, '').length < 1) {
                fileInfo.err("Le nom du fichier est invalide.")
                return
            }

            const reqFiles = post("FX_NEW_FILE", rootInput.value + "/" +  filename.value)
            reqFiles.then((result) => {
                if(result == "OK") {
                    View.destroyPopup(`<i class="fa-solid fa-file-arrow-up"></i> Nouveau fichier`)
                    const reqFiles = post("FX_GET", rootInput.value)
                    reqFiles.then((result) => {
                        loadFiles(result)
                    })
                } else if(result == "EXIST") {
                    fileInfo.err("Le fichier existe déjà.")
                } else if(result == "NOT_PERMITTED") {
                    fileInfo.err("Vous n'avez pas les permissions pour créer un fichier ici.")
                } else {
                    fileInfo.err("Une erreur est survenue.")
                }
            })


        })

        fileupload.addEventListener("click", () => {

            fileInfo.clear()
            View.destroyPopup(`<i class="fa-solid fa-file-arrow-up"></i> Nouveau fichier`)
            View.createPopup({
                title: `<i class='fa-solid fa-file-arrow-up'></i> Upload`,
                content: `
                    <input type='file' class='field' id='${View.getViewTitle()}_fileuploadInput'>
                    <div id='${View.getViewTitle()}_fileuploadInfo'></div>
                    <button class='btn green' id='${View.getViewTitle()}_fileuploadBtn'><span><i class='fa fa-upload'></i> Upload</span></button>
            `})

            const fileuploadInput = getID(View.getViewTitle() + "_fileuploadInput")
            const fileuploadBtn = getID(View.getViewTitle() + "_fileuploadBtn")
            const fileuploadInfo = new TextResponse(View.getViewTitle() + "_fileuploadInfo")
                
            fileuploadBtn.addEventListener("click", () => {

                fileuploadInfo.clear()
                if(fileuploadInput.files.length < 1) {
                    fileuploadInfo.err("Aucun fichier sélectionné.")
                    return
                }

                const file = fileuploadInput.files[0]

                const reqFiles = post("FX_UPLOAD", {name: file.name ,root: rootInput.value, file: file})

                reqFiles.then((result) => {

                    if(result == "OK") {
                        View.destroyPopup(`<i class="fa-solid fa-file-arrow-up"></i> Upload`)
                        const reqFiles = post("FX_GET", rootInput.value)
                        reqFiles.then((result) => {
                            loadFiles(result)
                        })
                    }
                    if(result == "EXIST") {
                        fileuploadInfo.err("Le fichier existe déjà.")
                    }
                    if(result == "NOT_PERMITTED") {
                        fileuploadInfo.err("Vous n'avez pas les permissions pour uploader un fichier ici.")
                    }
                    if(result == "NOT_FILE") {
                        fileuploadInfo.err("Le fichier n'est pas valide.")
                    }
                    if(result == "NOT_EXIST") {
                        fileuploadInfo.err("Le fichier n'existe pas.")
                    }
                    if(result == "TOO_BIG") {
                        fileuploadInfo.err("Le fichier est trop volumineux.")
                    }
                    if(result == "ERROR") {
                        fileuploadInfo.err("Une erreur est survenue.")
                    }
                })
            })
        })
    })



    rootInput.addEventListener("change", () => {

       const reqFiles = post("FX_GET", rootInput.value)
       reqFiles.then((result) => {
            loadFiles(result)

       }) 
     })

    function loadFiles(files) {

        rootInput.value = files.root
        var fileElements = new Array()

        if(files.content == "NOT_PERMITTED") {
            fileElements.unshift(`<div id='fx-parent' class='fx-element'><p><i class="fa-solid fa-rotate-left"></i> Revenir au dossier parent </p></div>`)
            fileElements.push("<p class='yellow' style='text-align: center;'><i class='fa fa-warning'></i> Vous n'avez pas les permissions pour accéder à ce dossier.</p>")

        } else if(files.content == "NOT_EXIST") {
            fileElements.unshift(`<div id='fx-parent' class='fx-element'><p><i class="fa-solid fa-rotate-left"></i> Revenir au dossier parent </p></div>`)
            explorer.innerHTML = "<p class='yellow' style='text-align: center;'><i class='fa fa-warning'></i> Ce dossier n'existe pas.</p>"
        } else {
            
       
            for(const file of files.content) {

                if(file.directory) {
                    file.size = "Dossier"

                } else {
                    console.log('------------')
                    console.log(file.size)
                    console.log(bytesToSize(file.size))
                    console.log('------------')
                    file.size = bytesToSize(file.size)
                }

                fileElements.push(`<div id='${file.id}' class='fx-element'>
                <div>
                    ${getIcon(file)}
                    <p>${file.name}</p>
                </div>
                <p>Taille : ${file.size}</p>
                <p>Date de modification : ${getFormattedDate(file.lastedition)}</p>
                </div>`)


            }

            // Sort the files by directory and then by name
            
            fileElements.sort((a, b) => {
                if(a.includes("Dossier") && !b.includes("Dossier")) {
                    return -1
                } else if(!a.includes("Dossier") && b.includes("Dossier")) {
                    return 1
                } else {
                    return 0
                }

            })

            fileElements.unshift(`<div id='fx-parent' class='fx-element'><p><i class="fa-solid fa-rotate-left"></i> Revenir au dossier parent </p></div>`)


        }

        explorer.innerHTML = fileElements.join("")

        const parent = document.getElementById("fx-parent")
       
        parent.addEventListener("click", () => {

                const reqFiles = post("FX_GET", files.parent)
                reqFiles.then((result) => {
                    loadFiles(result)
                })

        })

        if(files.content != "NOT_PERMITTED" && files.content != "NOT_EXIST") {

            // If it's a directory, get the file directory and make the request to get the files in it and loadIt

            for(const file of files.content) {

                
            
                
                const element = document.getElementById(file.id)
                    
                if(file.directory) {

                   
                    element.addEventListener("click", () => {

                        const reqFiles = post("FX_GET", file.fileDirectory)
                        reqFiles.then((result) => {
                            loadFiles(result)
                        }) 
                    })
                } else {

                    element.addEventListener("dblclick", () => {
                        editFile()
                    })
            
                
                }

               

                
            
                  
                getID(file.id).addEventListener("contextmenu", () => {

                    const dropMenu = new DroppableMenu()

                    dropMenu.add("copy", "<i class='fa fa-copy'></i> Copier")
                    dropMenu.add("cut", "<i class='fa fa-cut'></i> Couper")
                    dropMenu.add("rename", "<i class='fa-solid fa-file-signature'></i> Renommer")
                    dropMenu.add("delete", "<i class='fa fa-trash'></i> Supprimer")

                    if(!file.directory) {
                        dropMenu.add("edit", "<i class='fa-solid fa-pen'></i> Editer")
                        dropMenu.add("share", "<i class='fa fa-share'></i> Partager")
                        dropMenu.add("download", "<i class='fa fa-download'></i> Télécharger")
                    }
                    dropMenu.show()


                    dropMenu.get("copy").addEventListener("click", () => {
                        dropMenu.hide()
                        inCopyOrCut = {"action": "copy", "file": file, "orginalPath": files.root}
                    })

                    dropMenu.get("cut").addEventListener("click", () => {
                        dropMenu.hide()
                        inCopyOrCut = {"action": "cut", "file": file, "orginalPath": files.root}
                    })

                    dropMenu.get("delete").addEventListener("click", () => {
                        dropMenu.hide()
                        const reqFiles = post("FX_DELETE", file.fileDirectory)
                        reqFiles.then((result) => {
                            if(result == "OK") {
                                const reqFiles = post("FX_GET", files.root)
                                reqFiles.then((result) => {
                                    loadFiles(result)
                                }) 
                            } else if(result == "NOT_PERMITTED") {
                                const reqFiles = post("FX_GET", files.root)
                                reqFiles.then((result) => {
                                    loadFiles(result)
                                }) 
                                View.createPopup({
                                    title: `<i class='fa fa-warning'></i> Erreur`,
                                    content: `<p class='yellow'>Vous n'avez pas les permissions pour supprimer ce fichier.</p>`
                                })
                            } else {
                                const reqFiles = post("FX_GET", files.root)
                                reqFiles.then((result) => {
                                    loadFiles(result)
                                }) 
                                View.createPopup({
                                    title: `<i class='fa fa-warning'></i> Erreur`,
                                    content: `<p class='yellow'>Une erreur est survenue.</p>`
                                })
                             
                            }
                        })
                    })
                    dropMenu.get("rename").addEventListener("click", () => {

                        dropMenu.hide()
                        View.createPopup({
                            title: `<i class='fa fa-file-signature'></i> Renommer`,
                            content: `
                                <input type='text' class='field' id='${View.getViewTitle()}_rename'>
                                <div id='${View.getViewTitle()}_renameInfo'></div>
                                <button class='btn green' id='${View.getViewTitle()}_renameBtn'><span><i class='fa fa-pen'></i> Renommer</span></button>
                        `}) 

                        const rename = getID(View.getViewTitle() + "_rename")
                        const renameBtn = getID(View.getViewTitle() + "_renameBtn")
                        const renameInfo = new TextResponse(View.getViewTitle() + "_renameInfo")
                        renameInfo.setSize("13px")
                        rename.value = file.name
                        rename.focus()
                        rename.select()

                        renameBtn.addEventListener("click", () => {
                            renameInfo.clear()
                            if(rename.value.length < 1) {
                                renameInfo.err("Le nom du fichier / dossier est trop court.")
                                return
                            }
            
                            const regex = new RegExp(/^[a-zA-Z0-9-_.]+$/)
            
                            if(!regex.test(rename.value) | rename.value.replace(/\s/g, '').length < 1) {
                                renameInfo.err("Le nom du fichier / dossier est invalide.")
                                return
                            }
            
                            const reqFiles = post("FX_RENAME", {root: files.root, oldName: file.name, newName: rename.value})
                            reqFiles.then((result) => {
                                if(result == "OK") {
                                    View.destroyPopup(`<i class="fa fa-file-signature"></i> Renommer`)
                                    const reqFiles = post("FX_GET", files.root)
                                    reqFiles.then((result) => {
                                        loadFiles(result)
                                    })
                                } else if(result == "EXIST") {
                                    renameInfo.err("Le fichier / dossier existe déjà.")
                                } else if(result == "NOT_PERMITTED") {
                                    renameInfo.err("Vous n'avez pas les permissions pour renommer ce fichier / dossier.")
                                } else {
                                    renameInfo.err("Une erreur est survenue.")
                                }
                            })

                        })
                    
                    })
                  
                    if(!file.directory) {
                    dropMenu.get("share").addEventListener("click", () => {
                        dropMenu.hide()
                        const reqFiles = post("FX_SHARE", {root: files.root, name: file.name})
                        reqFiles.then((result) => {
                            if(result == "NOT_PERMITTED") {
                                View.createPopup({
                                    title: `<i class='fa fa-warning'></i> Erreur`,
                                    content: `<p class='yellow'>Vous n'avez pas les permissions pour partager ce fichier.</p>`
                                })
                            } else {
                                View.createPopup({
                                    title: `<i class='fa fa-share'></i> Partager`,
                                    content: `
                                        <input style='width: 300px' type='text' class='field' id='${View.getViewTitle()}_sharelink'>
                                        <div id='${View.getViewTitle()}_shareInfo'></div>
                                        <button class='btn green' id='${View.getViewTitle()}_shareBtn'><span><i class='fa fa-share'></i> Copier</span></button>
                                `}) 

                                const sharelink = getID(View.getViewTitle() + "_sharelink")
                                const shareBtn = getID(View.getViewTitle() + "_shareBtn")
                                const shareInfo = new TextResponse(View.getViewTitle() + "_shareInfo")
                                shareInfo.setSize("13px")
                                sharelink.value = result
                                sharelink.focus()
                                sharelink.select()

                                shareBtn.addEventListener("click", () => {
                                    sharelink.focus()
                                    sharelink.select()
                                    window.navigator.clipboard.writeText(sharelink.value)
                                    shareInfo.ok("Copié !")
                                })
                            }
                        })
                    })
                    // Edit file with an ViewWindow with 2 options close & save and the name of the window is like File - Editor

                    dropMenu.get("edit").addEventListener("click", () => {
                        dropMenu.hide()
                       
                        editFile()
                        
                    })

                    dropMenu.get("download").addEventListener("click", () => {
                        dropMenu.hide()
                        const reqFiles = post("FX_GETFILE", file.fileDirectory)
                        reqFiles.then((result) => {
                            if(result == "NOT_PERMITTED") {
                                View.createPopup({
                                    title: `<i class='fa fa-warning'></i> Erreur`,
                                    content: `<p class='yellow'>Vous n'avez pas les permissions pour télécharger ce fichier.</p>`
                                })
                            } else {
                               // Make Download using result
                                    const element = document.createElement('a');
                                    element.setAttribute('href', 'data:text/plain;charset=utf-8,' + encodeURIComponent(result));
                                    element.setAttribute('download', file.name);
                                    element.style.display = 'none';
                                    document.body.appendChild(element);
                                    element.click();
                                    document.body.removeChild(element);

                            }
                        })
                    })
                    
  
                
                }
                    
                })

                

                

                function editFile() {
                    const reqFiles = post("FX_GETFILE", file.fileDirectory)
                    reqFiles.then((result) => {
                        if(result == "NOT_PERMITTED") {
                            View.createPopup({
                                title: `<i class='fa fa-warning'></i> Erreur`,
                                content: `<p class='yellow'>Vous n'avez pas les permissions pour éditer ce fichier.</p>`
                            })
                        } else {
                            const editor = new ViewWindow({
                                title: `<i class="fa-solid fa-file-pen"></i> Editeur - ${file.fileDirectory}`,
                                width: "1000px",
                                height: "600px"
                            })

                            editor.setContent(`
                             
                                    <div class='fx-bar'>
                                        <span id='${editor.getViewTitle()}_save' class='btn-cover'><i class='fa fa-save'></i></span>
                                    </div>
                                    <textarea id='${editor.getViewTitle()}_editorContent' class='fx-editor-content'>${result}</textarea>
                          
                                
                            `)

                      
                            const editorSave = getID(editor.getViewTitle() + "_save")
                            const editorContent = getID(editor.getViewTitle() + "_editorContent")

                            // Sauvegarder  le fichier en l'envoyant 

                            editorSave.addEventListener("click", () => {

                                const reqFiles = post("FX_SAVEFILE", {root: files.root, name: file.name, content: editorContent.value})
                                reqFiles.then((result) => {
                                    if(result == "OK") {
                                        editor.destroy()
                                        const reqFiles = post("FX_GET", files.root)
                                        reqFiles.then((result) => {
                                            loadFiles(result)
                                        })
                                    } else if(result == "NOT_PERMITTED") {
                                        editor.createPopup({
                                            title: `<i class='fa fa-warning'></i> Erreur`,
                                            content: `<p class='yellow'>Vous n'avez pas les permissions pour éditer ce fichier.</p>`
                                        })
                                    } else {
                                        editor.createPopup({
                                            title: `<i class='fa fa-warning'></i> Erreur`,
                                            content: `<p class='yellow'>Une erreur est survenue.</p>`
                                        })
                                    }
                                })
                            })



                            //forbid textarea resize
                            editorContent.style.resize = "none"

                        
                        


                        }

                    })
                }

            }


        }
       
    }

    

})


function getIcon(file) {
    if(file.type == "application/json") {

        return '<i style="color:rgb(179, 141, 4);" class="fa-sharp fa-code"></i>'
    }
    if(file.type == "application/msword" | file.type == "application/vnd.openxmlformats-officedocument.wordprocessingml.document") {

        return '<i style="color:rgb(47, 94, 247);" class="fa-solid fa-file-word"></i>'
    }
    if(file.type == "application/vnd.ms-powerpoint") {

        return '<i style="color:rgb(255, 112, 51);" class="fa-solid fa-file-powerpoint"></i>'
    }
    if(file.type == "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" | file.type == "application/vnd.ms-excel") {

        return '<i style="color:rgb(51, 255, 61);" class="fa-solid fa-file-excel"></i>'
    }

    if(file.type == "application/java-archive") {

        return '<i style="color:rgb(255, 202, 150);" class="fa-brands fa-java"></i>'
    }

    if(file.type == "application/x-sh") {

        return '<i style="color:rgb(171, 226, 255);" class="fa-solid fa-file-code"></i>'
    }

    if(file.type == "application/x-msdos-program" | file.type == "application/x-msdownload") {

        return'<i style="color:rgb(53, 191, 255);" class="fa-brands fa-windows"></i>'
    }
    if(file.type == "application/javascript") {

        return '<i style="color:rgb(179, 141, 4);" class="fa-brands fa-js"></i>'
    }
    if(file.type == "image/png" | file.type == "image/jpeg") {

        return '<i style="color:rgb(189, 104, 189);" class="fa-solid fa-file-image"></i>'
    }
    if(file.type == "text/html") {

        return '<i style="color:tomato;" class="fa-brands fa-html5"></i>'
    }
    if(file.type == "text/css") {

        return '<i style="color:rgb(66, 135, 245);" class="fa-brands fa-css3-alt"></i>'
    }
    if(file.type == "application/zip") {

        return '<i style="color:rgb(255, 139, 38);" class="fa-solid fa-file-zipper"></i>'
    }
    if(file.type == "audio/mpeg") {

        return '<i style="color:rgb(38, 222, 255);" class="fa-solid fa-file-audio"></i>'
    }
    if(file.type == "application/pdf") {

        return '<i style="color:rgb(255, 71, 51);" class="fa-solid fa-file-pdf"></i>'
    } 
    if(file.directory) {

        return '<i style="color:yellow;" class="fa fa-folder"></i>'
    } else {

        return '<i class="fa fa-file"></i>'
    }

}

function bytesToSize(bytes) {
    var sizes = ['o', 'Ko', 'Mo', 'Go', 'To'];
    if (bytes == 0) return '0 o';
    var i = parseInt(Math.floor(Math.log(bytes) / Math.log(1024)));
    return Math.round(bytes / Math.pow(1024, i), 2) + ' ' + sizes[i];
}