fix examples

Author: onikiri2007

.gitignore

@@ -5,3 +5,5 @@
 .pub/
 
 build/
+
+node_modules/

README.md

@@ -122,15 +122,14 @@ final uploader = FlutterUploader();
 #### Create new upload task:
 
 ```dart
-final uploader = FlutterUploader();
 final taskId = await uploader.enqueue(
   url: "your upload link", //required: url to upload to
   files: [FileItem(filename: filename, savedDir: savedDir, fieldname:"file")], // required: list of files that you want to upload
   method: UplaodMethod.POST, // HTTP method  (POST or PUT or PATCH)
   headers: {"apikey": "api_123456", "userkey": "userkey_123456"},
   data: {"name": "john"}, // any data you want to send in upload request
   showNotification: false, // send local notification (android only) for upload status
-  tag: "upload 1"); // headers to be sent in upload request,
+  tag: "upload 1"); // unique tag for upload task
 );
 ```
 

android/src/main/java/com/bluechilli/flutteruploader/FlutterUploaderPlugin.java

@@ -12,8 +12,10 @@
 import com.google.gson.Gson;
 import com.google.gson.reflect.TypeToken;
 
+import java.lang.reflect.Array;
 import java.lang.reflect.Type;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
@@ -50,6 +52,8 @@ public class FlutterUploaderPlugin implements MethodCallHandler, Application.Act
   private Map<String, String> tasks = new HashMap<>();
   private Gson gson = new Gson();
   private int taskIdKey = 0;
+  private final String[] validHttpMethods = new String[] {"POST", "PUT", "PATCH"};
+
   public static void registerWith(Registrar registrar) {
     final MethodChannel channel = new MethodChannel(registrar.messenger(), CHANNEL_NAME);
     final FlutterUploaderPlugin plugin = new FlutterUploaderPlugin(registrar, channel);
@@ -61,7 +65,6 @@ private FlutterUploaderPlugin(Registrar registrar, MethodChannel channel) {
     this.channel = channel;
     this.register = registrar;
     this.connectionTimeout =  FlutterUploaderInitializer.getConnectionTimeout(registrar.context());
-
   }
 
   private final BroadcastReceiver updateProcessEventReceiver = new BroadcastReceiver() {
@@ -171,6 +174,7 @@ public void onActivitySaveInstanceState(Activity activity, Bundle outState) {
   public void onActivityDestroyed(Activity activity) {
   }
 
+
   private void enqueue(MethodCall call, MethodChannel.Result result) {
     taskIdKey++;
     String url = call.argument("url");
@@ -181,12 +185,13 @@ private void enqueue(MethodCall call, MethodChannel.Result result) {
     boolean showNotification = call.argument("show_notification");
     String tag = call.argument("tag");
 
+    List<String> methods = Arrays.asList(validHttpMethods);
 
     if(method == null) {
       method = "POST";
     }
 
-    if(method != null && (method.toUpperCase() != "POST" || method.toUpperCase() != "PUT" || method.toUpperCase() != "PATCH" )) {
+    if(!methods.contains(method.toUpperCase())) {
       result.error("invalid_method", "Method must be either POST | PUT | PATCH", null);
       return;
     }

example/README.md

@@ -4,5 +4,28 @@ Demonstrates how to use the flutter_uploader plugin.
 
 ## Getting Started
 
-For help getting started with Flutter, view our online
-[documentation](https://flutter.io/).
+# Setup upload Api
+
+1. install firebase-tools in terminal
+
+```console
+npm install -g firebase-tools
+```
+
+2. create project in firebase console
+
+3. login to firebase in terminal
+
+```console
+firebase login
+```
+
+4. Go to example/backend/
+
+5. run
+
+```console
+firebase deploy
+```
+
+6. run example app

example/backend/firebase.json

@@ -0,0 +1,8 @@
+{
+  "functions": {
+    "predeploy": [
+      "npm --prefix \"$RESOURCE_DIR\" run lint"
+    ],
+    "source": "functions"
+  }
+}

example/backend/functions/.eslintrc.json

@@ -0,0 +1,123 @@
+{
+  "parserOptions": {
+    // Required for certain syntax usages
+    "ecmaVersion": 6
+  },
+  "plugins": [
+    "promise"
+  ],
+  "extends": "eslint:recommended",
+  "rules": {
+    // Removed rule "disallow the use of console" from recommended eslint rules
+    "no-console": "off",
+
+    // Removed rule "disallow multiple spaces in regular expressions" from recommended eslint rules
+    "no-regex-spaces": "off",
+
+    // Removed rule "disallow the use of debugger" from recommended eslint rules
+    "no-debugger": "off",
+
+    // Removed rule "disallow unused variables" from recommended eslint rules
+    "no-unused-vars": "off",
+
+    // Removed rule "disallow mixed spaces and tabs for indentation" from recommended eslint rules
+    "no-mixed-spaces-and-tabs": "off",
+
+    // Removed rule "disallow the use of undeclared variables unless mentioned in /*global */ comments" from recommended eslint rules
+    "no-undef": "off",
+
+    // Warn against template literal placeholder syntax in regular strings
+    "no-template-curly-in-string": 1,
+
+    // Warn if return statements do not either always or never specify values
+    "consistent-return": 1,
+
+    // Warn if no return statements in callbacks of array methods
+    "array-callback-return": 1,
+
+    // Require the use of === and !==
+    "eqeqeq": 2,
+
+    // Disallow the use of alert, confirm, and prompt
+    "no-alert": 2,
+
+    // Disallow the use of arguments.caller or arguments.callee
+    "no-caller": 2,
+
+    // Disallow null comparisons without type-checking operators
+    "no-eq-null": 2,
+
+    // Disallow the use of eval()
+    "no-eval": 2,
+
+    // Warn against extending native types
+    "no-extend-native": 1,
+
+    // Warn against unnecessary calls to .bind()
+    "no-extra-bind": 1,
+
+    // Warn against unnecessary labels    
+    "no-extra-label": 1,
+
+    // Disallow leading or trailing decimal points in numeric literals
+    "no-floating-decimal": 2,
+
+    // Warn against shorthand type conversions
+    "no-implicit-coercion": 1,
+
+    // Warn against function declarations and expressions inside loop statements
+    "no-loop-func": 1,
+
+    // Disallow new operators with the Function object
+    "no-new-func": 2,
+
+    // Warn against new operators with the String, Number, and Boolean objects
+    "no-new-wrappers": 1,
+
+    // Disallow throwing literals as exceptions
+    "no-throw-literal": 2,
+
+    // Require using Error objects as Promise rejection reasons
+    "prefer-promise-reject-errors": 2,
+
+    // Enforce “for” loop update clause moving the counter in the right direction
+    "for-direction": 2,
+
+    // Enforce return statements in getters
+    "getter-return": 2,
+
+    // Disallow await inside of loops
+    "no-await-in-loop": 2,
+
+    // Disallow comparing against -0
+    "no-compare-neg-zero": 2,
+
+    // Warn against catch clause parameters from shadowing variables in the outer scope
+    "no-catch-shadow": 1,
+
+    // Disallow identifiers from shadowing restricted names
+    "no-shadow-restricted-names": 2,
+
+    // Enforce return statements in callbacks of array methods
+    "callback-return": 2,
+
+    // Require error handling in callbacks
+    "handle-callback-err": 2,
+
+    // Warn against string concatenation with __dirname and __filename
+    "no-path-concat": 1,
+
+    // Prefer using arrow functions for callbacks
+    "prefer-arrow-callback": 1,
+
+    // Return inside each then() to create readable and reusable Promise chains.
+    // Forces developers to return console logs and http calls in promises. 
+    "promise/always-return": 2,
+
+    //Enforces the use of catch() on un-returned promises
+    "promise/catch-or-return": 2,
+
+    // Warn against nested then() or catch() statements
+    "promise/no-nesting": 1
+  }
+}

example/backend/functions/.gitignore

@@ -0,0 +1 @@
+node_modules/

example/backend/functions/index.js

@@ -0,0 +1,59 @@
+const path = require("path");
+const os = require("os");
+const fs = require("fs");
+const functions = require("firebase-functions");
+const cors = require("cors")({ origin: true });
+const Busboy = require("busboy");
+
+exports.upload = functions.https.onRequest((req, res) => {
+  cors(req, res, () => {
+    const uploads = [];
+    const methods = ["POST", "PUT", "PATCH"];
+    if (!methods.includes(req.method, 0)) {
+      return res.status(405).json({
+        errorMessage: "Method is not allowed"
+      });
+    }
+
+    const busboy = new Busboy({ headers: req.headers });
+
+    busboy.on("file", (fieldname, file, filename, encoding, mimetype) => {
+      console.log("File [" + fieldname + "]: filename: " + filename);
+      file.on("data", data => {
+        console.log("File [" + fieldname + "] got " + data.length + " bytes");
+      });
+      file.on("end", () => {
+        console.log("File [" + fieldname + "] Finished");
+      });
+
+      const filepath = path.join(os.tmpdir(), filename);
+      uploads.push({
+        file: filepath,
+        fieldname: fieldname,
+        filename: filename,
+        mimetype: mimetype,
+        encoding: encoding
+      });
+      console.log(`Saving '${fieldname}' to ${filepath}`);
+      file.pipe(fs.createWriteStream(filepath));
+    });
+    busboy.on("field", (fieldname, val, fieldnameTruncated, valTruncated) => {
+      console.log("Field [" + fieldname + "]: value: " + val);
+    });
+    busboy.on("finish", () => {
+      res.status(200).json({
+        message: "Successfully uploaded"
+      });
+      res.end();
+    });
+    busboy.on("error", error => {
+      res.status(500).json({
+        errorMessage: error.toString(),
+        error: error
+      });
+      res.end();
+    });
+    busboy.end(req.rawBody);
+    req.pipe(busboy);
+  });
+});

example/backend/functions/package.json

@@ -0,0 +1,24 @@
+{
+  "name": "functions",
+  "description": "Cloud Functions for Firebase",
+  "scripts": {
+    "lint": "eslint .",
+    "serve": "firebase serve --only functions",
+    "shell": "firebase functions:shell",
+    "start": "npm run shell",
+    "deploy": "firebase deploy --only functions",
+    "logs": "firebase functions:log"
+  },
+  "dependencies": {
+    "aws-sdk": "^2.418.0",
+    "busboy": "^0.3.0",
+    "cors": "^2.8.5",
+    "firebase-admin": "^7.0.0",
+    "firebase-functions": "^2.2.0"
+  },
+  "devDependencies": {
+    "eslint": "^5.12.0",
+    "eslint-plugin-promise": "^4.0.1"
+  },
+  "private": true
+}