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var express = require("express");
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var bodyParser = require("body-parser");
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var multer = require("multer");
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var app = express();
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var cors = require('cors');
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var http = require("http");
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var auth = 'http://scoobydoo.di.uoa.gr:8080/dnet-openaire-users-1.0.0-SNAPSHOT/api/users/getUserInfo?accessToken=';
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9
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var storage = multer.diskStorage({
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destination: function (req, file, cb) {
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cb(null, 'uploads')
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},
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filename: function (req, file, cb) {
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if(req.params.id) {
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cb(null, req.params.id + '-' + new Date().getTime() + '.' + file.originalname.split('.').pop());
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} else {
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cb(null, file.originalname);
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}
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}
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});
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var upload = multer({ storage: storage })
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app.use(cors());
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app.use(bodyParser.json());
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app.use(bodyParser.urlencoded({extended: true}));
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app.use(function (req, res, next) {
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res.header("Access-Control-Allow-Origin", "*");
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res.header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept");
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next();
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});
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app.post("/upload", upload.array("uploads[]", 12), function (req, res) {
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var filepath = "./" + req.files[0].path;
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if (req.files[0].mimetype != 'text/csv') {
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console.error("No proper file type");
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39
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res.status(500).send(getResponse(500, "No proper file type"));
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} else {
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//send file
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res.download(filepath);
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}
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deleteFile(filepath);
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});
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47
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48
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app.post('/upload/:id', upload.single('photo'), (req, res) => {
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49
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const token = req.headers['x-xsrf-token'];
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50
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const file = req.file;
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51
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const filepath = "./" + file.path;
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52
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if(!token) {
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53
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res.status(401).send(getResponse(401, "Unauthorized"));
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54
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deleteFile(filepath);
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}
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56
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else if (!file || (file.mimetype != 'image/jpeg' && file.mimetype != 'image/png')) {
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57
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res.status(500).send(getResponse(500, "No image file type"));
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deleteFile(filepath);
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59
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}
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60
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else {
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61
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http.get(auth+token, function (resp) {
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62
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var responseString = "";
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63
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resp.on("data", function (data) {
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64
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responseString += data;
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65
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});
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66
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resp.on("end", function () {
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67
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var result = JSON.parse(responseString);
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68
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console.log(result);
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69
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if(result.error) {
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70
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res.status(401).send(getResponse(401, "Unauthorized"));
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71
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deleteFile(filepath);
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72
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} else {
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73
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// if user id contains id param keep file and send information, else delete it.
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74
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if(result.sub.indexOf(req.params.id) !== -1) {
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75
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file.filename = file.filename;
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76
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res.send(file);
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} else {
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res.status(401).send(getResponse(401, "Unauthorized"));
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79
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deleteFile(filepath);
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80
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}
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81
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}
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82
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});
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83
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});
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84
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}
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85
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86
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});
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87
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88
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app.get('/download/:filename', function (req, res) {
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89
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res.download('./uploads/' + req.params.filename);
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});
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91
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92
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app.delete('/delete/:filename', function (req, res) {
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93
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const token = req.headers['x-xsrf-token'];
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94
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if(!token) {
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95
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res.status(401).send(getResponse(401, "Unauthorized"));
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96
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} else {
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97
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http.get(auth+token, function (resp) {
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98
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var responseString = "";
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99
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resp.on("data", function (data) {
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100
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responseString += data;
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101
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});
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102
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resp.on("end", function () {
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103
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var result = JSON.parse(responseString);
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104
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console.log(result);
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105
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if(result.error) {
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106
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res.status(401).send(getResponse(401, "Unauthorized"));
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107
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} else {
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108
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// if user id is on filename delete file else unauthorized.
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109
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if(result.sub.indexOf(req.params.filename.split('-')[0]) !== -1) {
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110
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deleteFile('./uploads/' + req.params.filename);
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111
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return res.status(200).send(getResponse(200, "File Deleted Successfully"));
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112
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} else {
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113
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res.status(401).send(getResponse(401, "Unauthorized"));
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114
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}
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115
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}
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});
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});
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118
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}
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});
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120
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121
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const server = app.listen(8000, function () {
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122
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console.log("Listening on port %s...", server.address().port);
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123
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});
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124
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125
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function getResponse(code, message) {
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126
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var response = {};
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127
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response["code"] = code;
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128
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response["message"] = message;
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129
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return response;
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130
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}
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131
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132
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function deleteFile(filepath) {
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133
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const fs = require('fs');
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134
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fs.stat(filepath, function (err, stats) {
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135
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console.log(stats); //here we got all information of file in stats variable
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136
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137
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if (err) {
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138
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return console.error(err);
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139
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}
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140
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141
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fs.unlink(filepath, function (err) {
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142
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if (err) return console.log(err);
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143
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console.log('file deleted successfully');
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144
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});
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145
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});
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146
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}
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147
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