some updates to test fetchparams.js code

routes/fetchparams.js

@@ -1,3 +1,5 @@
+var app = require('http').createServer(handler)
+var io = require('socket.io')(app);
 var fs = require('fs');
 var request = require('request');
 var progress = require('request-progress');
@@ -5,46 +7,203 @@ const path = require('path')
 const url = require('url')
 const os = require('os')
 const sha256 = require('sha256')
+const crypto = require('crypto')
 Promise = require('bluebird');
 
+app.listen(3000);
 
+function handler (req, res) {
+  fs.readFile(__dirname + '/index.html',
+  function (err, data) {
+    if (err) {
+      res.writeHead(500);
+      return res.end('Error loading index.html');
+    }
 
+    res.writeHead(200);
+    res.end(data);
+  });
+}
 
-PARAMS_DIR="$HOME/Library/Application Support/ZcashParams"
+if (os.platform() === 'darwin') {
+    var PARAMS_DIR = process.env.HOME + '/Library/Application Support/ZcashParams'
+}
+if (os.platform() === 'linux') {
+    var PARAMS_DIR = process.env.HOME + '/.zcash-params'
+}
 
-SPROUT_PKEY_NAME='sprout-proving.key'
-SPROUT_PKEY_NAME_HASH='8bc20a7f013b2b58970cddd2e7ea028975c88ae7ceb9259a5344a16bc2c0eef7'
-SPROUT_VKEY_NAME='sprout-verifying.key'
-SPROUT_VKEY_NAME_HASH='4bd498dae0aacfd8e98dc306338d017d9c08dd0918ead18172bd0aec2fc5df82'
-SPROUT_PKEY_URL="https://z.cash/downloads/$SPROUT_PKEY_NAME"
-SPROUT_VKEY_URL="https://z.cash/downloads/$SPROUT_VKEY_NAME"
 
-// The options argument is optional so you can omit it 
-progress(request('https://az412801.vo.msecnd.net/vhd/VMBuild_20141027/VirtualBox/IE11/Windows/IE11.Win8.1.For.Windows.VirtualBox.zip'), {
-    // throttle: 2000,                    // Throttle the progress event to 2000ms, defaults to 1000ms 
-    // delay: 1000,                       // Only start to emit after 1000ms delay, defaults to 0ms 
-    // lengthHeader: 'x-transfer-length'  // Length header to use, defaults to content-length 
-})
-.on('progress', function (state) {
-    // The state is an object that looks like this: 
-    // { 
-    //     percent: 0.5,               // Overall percent (between 0 to 1) 
-    //     speed: 554732,              // The download speed in bytes/sec 
-    //     size: { 
-    //         total: 90044871,        // The total payload size in bytes 
-    //         transferred: 27610959   // The transferred payload size in bytes 
-    //     }, 
-    //     time: { 
-    //         elapsed: 36.235,        // The total elapsed seconds since the start (3 decimals) 
-    //         remaining: 81.403       // The remaining seconds to finish (3 decimals) 
-    //     } 
-    // } 
-    console.log('progress', state);
-})
-.on('error', function (err) {
-    // Do something with err 
-})
-.on('end', function () {
-    // Do something after request finishes 
+//PARAMS_DIR="$HOME/Library/Application Support/ZcashParams"
+
+var SPROUT_FILES_DATA = [{"file":"sprout-proving.key","hash":"8bc20a7f013b2b58970cddd2e7ea028975c88ae7ceb9259a5344a16bc2c0eef7"},{"file":"sprout-verifying.key","hash":"4bd498dae0aacfd8e98dc306338d017d9c08dd0918ead18172bd0aec2fc5df82"}]
+var SPROUT_DL_URL="https://z.cash/downloads/"
+
+//console.log(SPROUT_FILES_DATA);
+
+SPROUT_FILES_DATA.forEach(function (value, index) {
+    //console.log(index);
+    //console.log(value);
+    //console.log(value.file);
+    //console.log(value.hash);
+
+    fs.exists(value.file, function(exists) {
+        if (exists) {
+            console.log(value.file + ' already exists at location.');
+            var tmphash
+
+            var fd = fs.createReadStream(value.file);
+            var hash = crypto.createHash('sha256')
+                hash.setEncoding('hex');
+
+            fd.on('end', function() {
+                hash.end();
+                console.log('hash is: ')
+                console.log(hash.read()); // the desired sha1sum
+                console.log(value.hash)
+                tmphash = hash.read();
+                if (hash.read() === value.hash) {
+                    console.log('File SHA256 sum matches.')
+                } else {
+                    console.log('File SHA256 sum does not match.')
+                }
+            });
+            // read all file and pipe it (write it) to the hash object
+            fd.pipe(hash);
+
+        } else {
+            var DLFile = function() {
+
+                return new Promise(function(resolve, reject) {
+                    
+                    console.log('file not there.');
+
+                    progress(request(SPROUT_DL_URL+value.file), {})
+                    .on('progress', function (state) {
+                        console.log('progress', state);
+                    })
+                    .on('error', function (err) {
+                        console.log(err);
+                    })
+                    .on('end', function () {
+                        // Do something after request finishes 
+                        console.log('download finished.')
+                        var result = 'File ==> ' + value.file + ': DOWNLOADED'
+                    })
+                    .pipe(fs.createWriteStream(value.file));
+
+                    console.log(result)
+                    resolve(result);
+                })
+            }
+
+
+            var CheckFileSHA = function() {
+
+                return new Promise(function(resolve, reject) {
+                    var fd = fs.createReadStream(value.file);
+                    var hash = crypto.createHash('sha256')
+                        hash.setEncoding('hex');
+
+                    fd.on('end', function() {
+                        hash.end();
+                        console.log('hash is: ')
+                        console.log(hash.read()); // the desired sha1sum
+                        console.log(value.hash)
+                        if (hash.read() === value.hash) {
+                            console.log('File SHA256 sum matches.')
+                        } else {
+                            console.log('File SHA256 sum does not match.')
+                        }
+                    });
+                    // read all file and pipe it (write it) to the hash object
+                    fd.pipe(hash);
+
+                    var result = 'SHA256 SUM Check: DONE'
+
+                    console.log(result)
+                    resolve(result);
+                })
+            }
+
+
+            DLFile()
+            .then(function(result) { 
+                return CheckFileSHA();
+            })
+        }
+    });
+    
+});
+
+
+function CheckSHASum(file, hashstr) {
+    console.log(hashstr)
+    var shasum
+    
+    // the file you want to get the hash    
+    
+
+    if (shasum === hashstr ) {
+        return true
+    } else return false
+}
+
+
+/*var CheckFileExists = function() {
+
+    return new Promise(function(resolve, reject) {
+        
+        if (path.existsSync('foo.txt')) {}
+        var result = 'Connecting To Pm2: done'
+
+        console.log(result)
+        resolve(result);
+    })
+}
+
+var DLFile = function() {
+
+    return new Promise(function(resolve, reject) {
+        var result = 'Killing Pm2: done'
+
+        setTimeout(function() {
+            console.log(result)
+            resolve(result);
+        }, 2000)
+    })
+}
+
+var CheckSHASum = function() {
+
+    return new Promise(function(resolve, reject) {
+        var result = 'Hiding Main Window: done'
+
+        console.log(result)
+        resolve(result);
+    })
+}
+
+var MoveFile = function() {
+
+    return new Promise(function(resolve, reject) {
+        var result = 'Quiting App: done'
+
+        console.log(result)
+        resolve(result);
+    })
+}
+
+ConnectToPm2()
+.then(function(result) { 
+    return KillPm2();
 })
-.pipe(fs.createWriteStream('IE11.Win8.1.For.Windows.VirtualBox.zip'));
+.then(HideMainWindow)
+.then(QuitApp)
+*/
+
+
+
+
+
+
+