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Docify: remove server side script, move all operation to client side
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DanyLE
2023-06-27 22:27:09 +02:00
parent e8aa62735a
commit f8435cd87c
22 changed files with 236 additions and 342 deletions
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234
Docify/ts/main.ts
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@ -1,5 +1,7 @@
namespace OS {
export namespace application {
declare var pdfjsLib;
declare var PDFLib;
export class Docify extends BaseApplication {
private catview: GUI.tag.ListViewTag;
@ -108,7 +110,8 @@ namespace OS {
main() {
if (!this.setting.printer) { this.setting.printer = ""; }
pdfjsLib.GlobalWorkerOptions.workerSrc = "pkg://libpdfjs/pdf.worker.js".asFileHandle().getlink();
this.catview = this.find("catview") as GUI.tag.ListViewTag;
this.docview = this.find("docview") as GUI.tag.ListViewTag;
this.docpreview = this.find("preview-canvas") as HTMLCanvasElement;
@ -288,12 +291,13 @@ namespace OS {
const timestamp = Math.floor(Date.now() / 1000);
data.ctime = timestamp;
data.mtime = timestamp;
const r = await this.exec("merge_files", data);
if(r.error)
const r = await this.merge_files(data);
data.file = r.path;
/*if(r.error)
{
throw new Error(r.error.toString());
}
data.file = r.result;
data.file = r.result;*/
this.docdb.cache = data;
const d = await this.docdb.write(undefined);
if(d.error)
@ -326,12 +330,16 @@ namespace OS {
{
throw new Error(r.error.toString());
}
r = await this.exec("deletedoc", {file: item.data.file});
if(r.error)
{
throw new Error(r.error.toString());
// delete file
try {
await item.data.file.asFileHandle().remove();
const thumb = await this.get_thumb_path(item.data.file);
await thumb.asFileHandle().remove();
}
catch(e)
{
console.log(e);
}
this.notify(r.result.toString());
this.update_doclist(item.data.cid);
return this.clear_preview();
}
@ -362,22 +370,40 @@ namespace OS {
data.id = item.data.id;
const timestamp = Math.floor(Date.now() / 1000);
data.mtime = timestamp;
let d = await this.exec("updatedoc", {
data,
rm: !data.file.includes(item.data.file) ? item.data.file : false
});
if(d.error)
if(data.file.includes(item.data.file) && data.file.length == 1)
{
throw new Error(d.error);
// nothing changes
data.file = item.data.file;
}
else
{
if(!data.file.includes(item.data.file))
{
// remove old file
try {
console.log("remove old file", item.data.file);
await item.data.file.asFileHandle().remove();
const thumb = await this.get_thumb_path(item.data.file);
await thumb.asFileHandle().remove();
}
catch(e)
{
console.log(e);
}
}
// merge all PDF file
const merged_file = await this.merge_files(data);
data.file = merged_file.path;
}
data.mtime = Math.floor(Date.now() / 1000);
const handle = item.data.$vfs;
handle.cache = d.result;
d = await handle.write(undefined);
handle.cache = data;
const d = await handle.write(undefined);
if(d.error)
{
throw new Error(d.error);
}
if (d.result) { this.toast(d.result); }
this.toast(__("Document updated"));
this.update_doclist(catiem.data.id);
return this.clear_preview();
}
@ -389,6 +415,90 @@ namespace OS {
return this.initialize();
}
private async get_thumb_path(filepath: string| API.VFS.BaseFileHandle)
{
const path = filepath.asFileHandle().path;
let thumb_name = await this.sha1(path.replace(this.setting.docpath,""));
return `${this.setting.docpath}/cache/${thumb_name}.png`;
}
private async merge_files(data) {
const paths: string[] = data.file;
const cat = data.cid.toFixed(1).toString();
const dir = `${this.setting.docpath}/${cat}`.asFileHandle();
try{
await dir.onready();
}
catch(_)
{
const ret = await dir.parent().mk(cat);
if(ret.error)
{
throw new Error(ret.error.toString());
}
await dir.onready();
}
const des_file = `${dir.path}/${new Date(Date.now()).getTime().toString()}.pdf`.asFileHandle();
// concat the file
const pdfdoc = await PDFLib.PDFDocument.create();
let pages = [];
for(const path of paths)
{
const arr = await path.asFileHandle().read("binary");
const doc = await PDFLib.PDFDocument.load(arr, { ignoreEncryption: true });
const copiedpages = await pdfdoc.copyPages(doc, doc.getPageIndices());
pages = pages.concat(copiedpages);
}
for (let i = 0; i < pages.length; i++) {
await pdfdoc.insertPage(i, pages[i]);
}
const buffer = await pdfdoc.save();
des_file.cache = new Blob([buffer]);
const ret = await des_file.write("binary");
if(ret.error)
{
throw new Error(ret.error.toString());
}
// move thumb file
let src_tfile = await this.get_thumb_path(paths[0]);
const dest_tfile = await this.get_thumb_path(des_file);
try {
console.log("Move", src_tfile, "to", dest_tfile);
const ret = await src_tfile.asFileHandle().move(dest_tfile);
if(ret.error)
{
console.log(ret.error);
}
}
catch(e)
{
console.log(e);
}
// remove other file and thumb file
for(const path of paths)
{
try{
src_tfile = await this.get_thumb_path(path);
console.log("'Remove file", path, src_tfile);
let ret = await path.asFileHandle().remove();
if(ret.error)
{
console.log(ret);
}
ret = await src_tfile.asFileHandle().remove();
if(ret.error)
{
console.log(ret);
}
}
catch(e)
{
console.log(e);
}
}
return des_file;
}
private async update_doclist(cid: any) {
try
{
@ -399,7 +509,6 @@ namespace OS {
order: ["year$desc", "month$desc", "day$desc"]
});
// this.exec("select",{table: "docs", cond:`cid = ${cid} ORDER BY year DESC, month DESC, day DESC`});
if(d.error)
{
throw new Error(d.error);
@ -420,14 +529,72 @@ namespace OS {
this.docpreview.getContext('2d').clearRect(0,0,this.docpreview.width,this.docpreview.height);
return this.docgrid.rows = [];
}
private async sha1(str) {
const enc = new TextEncoder();
const hash = await crypto.subtle.digest('SHA-1', enc.encode(str));
return Array.from(new Uint8Array(hash))
.map(v => (v.toString(16) as any).padStart(2, '0'))
.join('');
}
private async genthumb(path: string)
{
/** try to search if the thumb file exists,
* if it does not exist, generate it using
* pdfjs library and an hidden canvas
*/
const tpath = await this.get_thumb_path(path);
const file = tpath.asFileHandle();
try {
await file.onready();
}
catch(e)
{
// generate thumb file
//data = await file.read("binary");
console.log("Try to generate thumb file for", path);
const canvas = this.find("tmp-canvas") as HTMLCanvasElement;
const context = canvas.getContext('2d');
const pdf = await pdfjsLib.getDocument(path.asFileHandle().getlink()).promise;
const page = await pdf.getPage(1);
const viewport = page.getViewport({ scale: 0.33});
// Support HiDPI-screens.
const outputScale = window.devicePixelRatio || 1;
canvas.width = Math.floor(viewport.width * outputScale);
canvas.height = Math.floor(viewport.height * outputScale);
canvas.style.width = Math.floor(viewport.width) + "px";
canvas.style.height = Math.floor(viewport.height) + "px";
const transform = outputScale !== 1
? [outputScale, 0, 0, outputScale, 0, 0]
: null;
const renderContext = {
canvasContext: context,
transform: transform,
viewport: viewport
};
await page.render(renderContext).promise;
const url = canvas.toDataURL('image/png');
file.cache = url;
const ret = await file.write("base64");
if(ret.error)
{
throw new Error(ret.error.toString());
}
await file.onready();
}
return file;
}
async preview(path: any, canvas: HTMLCanvasElement) {
try {
const d = await this.exec("preview", path);
if (d.error) {
throw new Error(d.error);
}
const file = d.result.asFileHandle();
const file = await this.genthumb(path);
const data = await file.read("binary");
const img = new Image();
//($ me.view).append img
@ -435,7 +602,6 @@ namespace OS {
const context = canvas.getContext('2d');
canvas.height = img.height;
canvas.width = img.width;
//console.log canvas.width, canvas.height
return context.drawImage(img, 0, 0);
};
@ -492,18 +658,6 @@ namespace OS {
}
}
exec(action: string, args?: GenericObject<any>) {
const cmd = {
path: `${this.path()}/api.lua`,
parameters: {
action,
docpath: this.setting.docpath,
args
}
};
return this.call(cmd);
}
menu() {
return [
{
@ -538,6 +692,10 @@ namespace OS {
}
}
}
Docify.dependencies = ["pkg://SQLiteDB/libsqlite.js"];
Docify.dependencies = [
"pkg://SQLiteDB/libsqlite.js",
"pkg://libpdfjs/pdf.js",
"pkg://PDFLib/main.js"
];
}
}