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file-manager.js
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file-manager.js
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"use strict";
const locreq = require("locreq")(__dirname);
const Promise = require("bluebird");
const UUIDGenerator = require("shortid");
const path = require("path");
const fse = require("fs-extra");
const fs = require("fs");
const get_main_app_dir = locreq("lib/utils/get-main-app-dir.js");
const Logger = locreq("lib/logger/logger.js");
const File = locreq("lib/data-structures/file.js");
const ChipManager = locreq("lib/chip-types/chip-manager.js");
/**
* Manages files
* @class
*/
const root_path = function(){
let parent_tmp = module.parent;
let parent = null;
while (parent_tmp){
parent = parent_tmp;
parent_tmp = parent_tmp.parent;
}
return parent.filename;
};
const FileManager = function(upload_path){
if (upload_path === undefined){
upload_path = "./uploaded_files/";
}
this.upload_path = path.resolve(get_main_app_dir(), "./" + upload_path);
};
FileManager.prototype.name = "files";
FileManager.prototype.save_file = function(file){
// should be passed as an argument
const Datastore = ChipManager.get_datastore_chip();
if (!fs.existsSync(this.upload_path)){
fs.mkdirSync(this.upload_path);
}
const newID = UUIDGenerator();
const upload_path_with_sealious_name = this.upload_path + "/" + newID;
return Promise.promisify(fs.writeFile)(upload_path_with_sealious_name, file.data)
.then(function(){
const file_database_entry = {
original_name: file.filename,
creation_context: file.context,
id: newID,
mime_type: file.mime,
};
return Datastore.insert("files", file_database_entry, {});
})
.then(function(){
return {
id: newID,
filename: file.filename
};
});
};
FileManager.prototype.diff = function(dispatcher, file){
};
FileManager.prototype.get_list = function(dispatcher, owner){
const query = {
"body.owner": owner
};
Logger.info("List for owner '" + owner + "' has been created");
return this.find(dispatcher, query);
};
FileManager.prototype.find = function(context, query){
const Datastore = ChipManager.get_datastore_chip();
const self = this;
return Datastore.find("files", query)
.then(function(documents){
const parsed_documents = documents.map(function(document){
const ret = File.from_db_entry(document);
ret.path_on_hdd = path.resolve(self.upload_path, "./" + ret.id);
return ret;
});
return Promise.resolve(parsed_documents);
});
};
FileManager.prototype.change_name = function(dispatcher, sealious_name, new_name){
const Datastore = ChipManager.get_datastore_chip();
return Datastore.update("files", {
sealious_id: sealious_name
}, {
$set: {
"body.original_name": new_name
}
});
};
FileManager.prototype.delete = function(dispatcher, query){
};
// wersjonowanie, historia dostępu, przetrzymywanie poprzednich wersji
module.exports = new FileManager();

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file-manager.js (2 KB)

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