From 1e413f71cd583bba570af8ed8fde7f797174dd41 Mon Sep 17 00:00:00 2001
From: Andre Natal <anatal@gmail.com>
Date: Sat, 13 Feb 2021 14:54:36 -0800
Subject: [PATCH] Including a more elaborated test page, a node webserver
 containing the proper cors headers and wasm mimetype

---
 .gitignore                       |   2 +
 README.md                        |   6 +-
 wasm/README.md                   |  38 +-
 wasm/bergamot.html               |  54 --
 wasm/test_page/bergamot.html     | 140 +++++
 wasm/test_page/helper.js         |  40 ++
 wasm/test_page/package-lock.json | 904 +++++++++++++++++++++++++++++++
 wasm/test_page/package.json      |   7 +
 wasm/test_page/start_server.sh   |   8 +
 9 files changed, 1129 insertions(+), 70 deletions(-)
 delete mode 100644 wasm/bergamot.html
 create mode 100644 wasm/test_page/bergamot.html
 create mode 100644 wasm/test_page/helper.js
 create mode 100644 wasm/test_page/package-lock.json
 create mode 100644 wasm/test_page/package.json
 create mode 100644 wasm/test_page/start_server.sh

diff --git a/.gitignore b/.gitignore
index e63aee1..59363a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,5 @@
 *.swp
 *.swo
 
+wasm/test_page/node_modules
+build-wasm
diff --git a/README.md b/README.md
index 3e458df..333e758 100644
--- a/README.md
+++ b/README.md
@@ -40,10 +40,12 @@ emmake make -j
 
 It should generate the artefacts (.js and .wasm files) in `wasm` folder inside build directory ("build-wasm" in this case).
 
+Download the models from `https://github.com/mozilla-applied-ml/bergamot-models`, and place all the desired ones to package in a folder called `models`.
+
 The build also allows packaging files into wasm binary (i.e. preloading in Emscripten’s virtual file system) using cmake
-option `PACKAGE_DIR`. The compile command below packages all the files in PATH directory into wasm binary.
+option `PACKAGE_DIR`. The compile command below packages all the files in PATH directory (in these case, your models) into wasm binary.
 ```bash
-emcmake cmake -DCOMPILE_WASM=on -DPACKAGE_DIR=<PATH> ../
+emcmake cmake -DCOMPILE_WASM=on -DPACKAGE_DIR=<PATH> ./models
 ```
 Files packaged this way are preloaded in the root of the virtual file system.
 
diff --git a/wasm/README.md b/wasm/README.md
index 83d4738..6be6209 100644
--- a/wasm/README.md
+++ b/wasm/README.md
@@ -1,5 +1,5 @@
 ## Using Bergamot Translator in JavaScript
-The example file `bergamot.html` in this folder demonstrates how to use the bergamot translator in JavaScript via a `<script>` tag.
+The example file `bergamot.html` in the folder `test_page` demonstrates how to use the bergamot translator in JavaScript via a `<script>` tag.
 This example assumes that files were packaged in wasm binary.
 
 A brief summary is here though:
@@ -33,20 +33,30 @@ request.delete();
 input.delete();
 ```
 
-You can also see everything in action by running `bergamot.html` file in the browser following these steps:
-* Copy bergamot.html to the directory where build artefacts of wasm compilation (i.e. .js and .wasm files) reside.
-* Start an http server locally
-* Open the link provided by the http server in any browser
-* Open the browser's console and you will see all the console messages there
+You can also see everything in action by following the next steps:
+* Start the test webserver (ensure you have the latest nodejs installed)
+```
+cd test_page
+bash start_server
+```
+* Open any of the browsers below
+    * Firefox Nightly +87: make sure the following prefs are on (about:config)
+    ````
+    javascript.options.wasm_simd = true
+    javascript.options.wasm_simd_wormhole = true
+    ````
 
-Assuming build artefacts are present in `$ROOT/build-wasm` folder where `ROOT` is repository's root.
-Above instructions would become:
+    * Chrome Canary +90: start with the following argument
+    ```
+    --js-flags="--experimental-wasm-simd"
+    ```
 
-```bash
-cd $ROOT/build-wasm
-cp ../wasm/bergamot.html wasm/.
-python3 -m http.server -d wasm
+* Browse to the following page:
+```
+http://localhost:8000/bergamot.html
 ```
 
-Assuming it starts the http server on 8000 port,
-open `http://0.0.0.0:8000/bergamot.html` in any browser and see the console logs in browser's console.
+* Run some translations:
+    * Choose a model and press `Load Model`
+    * Type a sentence to be translated in the `From` textbox and press `Translate`
+    * See the results in the `To` and `Log` textboxes
\ No newline at end of file
diff --git a/wasm/bergamot.html b/wasm/bergamot.html
deleted file mode 100644
index 2bbad04..0000000
--- a/wasm/bergamot.html
+++ /dev/null
@@ -1,54 +0,0 @@
-<!doctype html>
-<html>
-  <script>
-    var Module = {
-      onRuntimeInitialized: function() {
-        // Set the Model Configuration as YAML formatted string.
-        // For available configuration options, please check: https://marian-nmt.github.io/docs/cmd/marian-decoder/
-        // This example captures the most relevant options: model file, vocabulary files and shortlist file
-        var modelConfig = "{\"models\":[\"/model.npz\"],\"vocabs\":[\"/vocab.esen.spm\",\"/vocab.esen.spm\"],\"beam-size\":1}";//,\"shortlist\":[\"/lex.s2t\"]
-
-        // Instantiate the TranslationModel
-        var model = new Module.TranslationModel(modelConfig);
-        console.log('Alignment:', model.isAlignmentSupported());
-
-        // Instantiate the arguments of translate() API i.e. TranslationRequest and input (vector<string>)
-        var request = new Module.TranslationRequest();
-        let input = new Module.VectorString;
-
-        // Initialize the input
-        input.push_back("¿Qué estás haciendo? ¿Por qué estás haciendo eso?");
-        input.push_back("Han pasado tres días de las elecciones presidenciales y los ecuatorianos siguen sin saber quién pasará a la segunda vuelta. El anuncio de Iván Duque del plan para regularizar al millón de migrantes venezolanos que están ilegales en Colombia ha generado esperanza a la vez que confusión.");
-
-        // Access input (just for debugging)
-        console.log('Input size=', input.size());
-        for (let i = 0; i < input.size(); i++) {
-          console.log(' val:' + input.get(i));
-        }
-
-        // Translate the input; the result is a vector<TranslationResult>
-        var result = model.translate(input, request);
-
-        // Access original and translated text from each entry of vector<TranslationResult>
-        console.log('Result size=', result.size());
-        for (let i = 0; i < result.size(); i++) {
-          console.log(' original=' + result.get(i).getOriginalText() + ', translation=' + result.get(i).getTranslatedText());
-        }
-
-        // Translate again more text
-        input.push_back("Luego de los cuestionamientos al gobierno chileno por la gestión de la pandemia, el país sudamericano lidera el ranking de vacunación en América Latina. Aquí te explicamos cómo lo ha logrado.");
-        result = model.translate(input, request);
-        console.log('Result size=', result.size());
-        for (let i = 0; i < result.size(); i++) {
-          console.log(' original=' + result.get(i).getOriginalText() + ', translation=' + result.get(i).getTranslatedText());
-        }
-
-        // Don't forget to clean up the instances
-        model.delete();
-        request.delete();
-        input.delete();
-      }
-    };
-  </script>
-  <script src="bergamot-translator-worker.js"></script>
-</html>
diff --git a/wasm/test_page/bergamot.html b/wasm/test_page/bergamot.html
new file mode 100644
index 0000000..49ca50e
--- /dev/null
+++ b/wasm/test_page/bergamot.html
@@ -0,0 +1,140 @@
+<!doctype html>
+<html>
+  <head>
+    <link rel="icon" href="data:,">
+    <meta http-equiv="Content-Type" content="text/html;charset=ISO-8859-1">
+  </head>
+  <style>
+    body, html, div {
+      margin-left:1%;
+      margin-right:1%;
+      margin-bottom:1%;
+      margin-top:1%;
+      padding-left:1%;
+      padding-right:1%;
+      padding-bottom:1%;
+      padding-top:1%;
+      }
+
+      textarea, #to, #from {
+        width: 100%;
+        max-width: 100%;
+      }
+
+      div {
+        float: left;
+        width: 80%;
+      }
+  </style>
+  <body>
+
+  <div id="divradios">
+    <label for="radios">Choose the model to use</label>
+    <input type="radio" id="modellang" name="modellang" value="enes" checked><label for="es">English to Spanish</label>
+    <input type="radio" id="modellang" name="modellang" value="esen"><label for="en">Spanish to English</label>
+    <input type="button" id="load" value="Load Model"/>
+  </div>
+
+  <div id="divtranslation">
+    <label for="from">From</label>
+    <input type="text" id="from" name="from"/>
+    <br><br>
+    <label for="to">To</label>
+    <input type="text" id="to" name="to" readonly/>
+    <br><br>
+    <input type="button" id="translate" value="Translate"/>
+  </div>
+
+  <div id="divlog">
+    <label for="log">Log:</label><br>
+    <textarea id="log" name="log" rows="50" cols="75"></textarea>
+  </div>
+
+  <script>
+
+    var model, request, input = undefined;
+    const loadModel = (lang) => {
+        // Set the Model Configuration as YAML formatted string.
+        // For available configuration options, please check: https://marian-nmt.github.io/docs/cmd/marian-decoder/
+        // This example captures the most relevant options: model file, vocabulary files and shortlist file
+        //        var modelConfig = "{\"models\":[\"/model.enes.npz\"],\"vocabs\":[\"/vocab.esen.spm\"],\"beam-size\":1}";//,\"shortlist\":[\"/lex.s2t\"]
+        const modelConfig = `{\"models\":[\"/model.${lang}.npz\"],\"vocabs\":[\"/vocab.esen.spm\",\"/vocab.esen.spm\"],\"beam-size\":1} ,\"shortlist\":[\"/lex.s2t\"]`;
+
+        // Instantiate the TranslationModel
+        if (model) model.delete();
+        model = new Module.TranslationModel(modelConfig);
+    }
+
+    const translate = (sentence) => {
+
+        // Instantiate the arguments of translate() API i.e. TranslationRequest and input (vector<string>)
+        var request = new Module.TranslationRequest();
+        let input = new Module.VectorString;
+
+        // Initialize the input
+        input.push_back(sentence);
+        /*
+        // Access input (just for debugging)
+        console.log('Input size=', input.size());
+        for (let i = 0; i < input.size(); i++) {
+          console.log(' val:' + input.get(i));
+        }
+        */
+
+        // Translate the input; the result is a vector<TranslationResult>
+        let result = model.translate(input, request);
+        // Access original and translated text from each entry of vector<TranslationResult>
+        //console.log('Result size=', result.size(), ' - TimeDiff - ', (Date.now() - start)/1000);
+        let translatedText = "";
+        for (let i = 0; i < result.size(); i++) {
+          translatedText += result.get(i).getTranslatedText() + " ";
+        }
+        console.log(translatedText);
+        request.delete();
+        input.delete();
+        return translatedText;
+  }
+
+    document.querySelector("#load").addEventListener("click", () => {
+      const lang = document.querySelector('input[name="modellang"]:checked').value;
+      let start = Date.now();
+      loadModel(lang)
+      log(`model ${lang} loaded in ${(Date.now() - start)/1000} secs`);
+      //log('Model Alignment:', model.isAlignmentSupported());
+    });
+
+    const translateCall = () => {
+      const text = document.querySelector('#from').value;
+      let start = Date.now();
+      const translate_text = translate(text);
+      log(`sentence translation time ${(Date.now() - start)/1000} secs`);
+      document.querySelector('#to').value = translate_text;
+    }
+
+    document.querySelector("#translate").addEventListener("click", () => {
+      translateCall();
+    });
+
+    document.querySelector("#from").addEventListener('keyup', function (event) {
+      if (event.keyCode === 13) {
+        translateCall();
+      }
+   });
+
+    const log = (message) => {
+      document.querySelector("#log").value += message + "\n";
+    }
+
+    let moduleLoadStart;
+    var Module = {
+      preRun: [function() {
+        moduleLoadStart = Date.now();
+      }],
+      onRuntimeInitialized: function() {
+        log(`Wasm Runtime initialized in ${(Date.now() - moduleLoadStart)/1000} secs`);
+      }
+    };
+  </script>
+  <script src="bergamot-translator-worker.js"></script>
+</body>
+</html>
diff --git a/wasm/test_page/helper.js b/wasm/test_page/helper.js
new file mode 100644
index 0000000..bff116c
--- /dev/null
+++ b/wasm/test_page/helper.js
@@ -0,0 +1,40 @@
+/*
+ * @author - Based of a file from Gist here: https://gist.github.com/1757658
+ *
+ * @modified - Mike Newell - it was on Gist so I figure I can use it
+ *
+ * @Description -   Added support for a few more mime types including the new
+ *                  .ogv, .webm, and .mp4 file types for HTML5 video.
+ *
+ */
+
+/*
+* @modified - Andre Natal - removed unused types for the purpose of this use
+case
+*/
+
+Helper = {
+
+    types: {
+       "wasm" : "application/wasm"
+       , "js" : "application/javascript"
+       , "html" : "text/html"
+       , "htm" : "text/html"
+       , "ico" : "image/vnd.microsoft.icon",
+    },
+
+    getMime: function(u) {
+
+        var ext = this.getExt(u.pathname).replace('.', '');
+
+        return this.types[ext.toLowerCase()] || 'application/octet-stream';
+
+    },
+
+    getExt: function(path) {
+        var i = path.lastIndexOf('.');
+
+        return (i < 0) ? '' : path.substr(i);
+    }
+
+};
diff --git a/wasm/test_page/package-lock.json b/wasm/test_page/package-lock.json
new file mode 100644
index 0000000..065c92d
--- /dev/null
+++ b/wasm/test_page/package-lock.json
@@ -0,0 +1,904 @@
+{
+  "name": "test_page",
+  "lockfileVersion": 2,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "cors": "^2.8.5",
+        "express": "^4.17.1",
+        "nocache": "^2.1.0"
+      }
+    },
+    "node_modules/accepts": {
+      "version": "1.3.7",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
+      "integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
+      "dependencies": {
+        "mime-types": "~2.1.24",
+        "negotiator": "0.6.2"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/array-flatten": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
+      "integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
+    },
+    "node_modules/body-parser": {
+      "version": "1.19.0",
+      "resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.0.tgz",
+      "integrity": "sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==",
+      "dependencies": {
+        "bytes": "3.1.0",
+        "content-type": "~1.0.4",
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "http-errors": "1.7.2",
+        "iconv-lite": "0.4.24",
+        "on-finished": "~2.3.0",
+        "qs": "6.7.0",
+        "raw-body": "2.4.0",
+        "type-is": "~1.6.17"
+      },
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/bytes": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
+      "integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg==",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/content-disposition": {
+      "version": "0.5.3",
+      "resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.3.tgz",
+      "integrity": "sha512-ExO0774ikEObIAEV9kDo50o+79VCUdEB6n6lzKgGwupcVeRlhrj3qGAfwq8G6uBJjkqLrhT0qEYFcWng8z1z0g==",
+      "dependencies": {
+        "safe-buffer": "5.1.2"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/content-type": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
+      "integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/cookie": {
+      "version": "0.4.0",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.0.tgz",
+      "integrity": "sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg==",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/cookie-signature": {
+      "version": "1.0.6",
+      "resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
+      "integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
+    },
+    "node_modules/cors": {
+      "version": "2.8.5",
+      "resolved": "https://registry.npmjs.org/cors/-/cors-2.8.5.tgz",
+      "integrity": "sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==",
+      "dependencies": {
+        "object-assign": "^4",
+        "vary": "^1"
+      },
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
+    "node_modules/debug": {
+      "version": "2.6.9",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
+      "integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
+      "dependencies": {
+        "ms": "2.0.0"
+      }
+    },
+    "node_modules/depd": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
+      "integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak=",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/destroy": {
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
+      "integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
+    },
+    "node_modules/ee-first": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
+      "integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
+    },
+    "node_modules/encodeurl": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
+      "integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k=",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/escape-html": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
+      "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
+    },
+    "node_modules/etag": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
+      "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc=",
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/express": {
+      "version": "4.17.1",
+      "resolved": "https://registry.npmjs.org/express/-/express-4.17.1.tgz",
+      "integrity": "sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==",
+      "dependencies": {
+        "accepts": "~1.3.7",
+        "array-flatten": "1.1.1",
+        "body-parser": "1.19.0",
+        "content-disposition": "0.5.3",
+        "content-type": "~1.0.4",
+        "cookie": "0.4.0",
+        "cookie-signature": "1.0.6",
+        "debug": "2.6.9",
+        "depd": "~1.1.2",
+        "encodeurl": "~1.0.2",
+        "escape-html": "~1.0.3",
+        "etag": "~1.8.1",
+        "finalhandler": "~1.1.2",
+        "fresh": "0.5.2",
+        "merge-descriptors": "1.0.1",
+        "methods": "~1.1.2",
+        "on-finished": "~2.3.0",
+        "parseurl": "~1.3.3",
+        "path-to-regexp": "0.1.7",
+        "proxy-addr": "~2.0.5",
+        "qs": "6.7.0",
+        "range-parser": "~1.2.1",
+        "safe-buffer": "5.1.2",
+        "send": "0.17.1",
+        "serve-static": "1.14.1",
+        "setprototypeof": "1.1.1",
+        "statuses": "~1.5.0",
+        "type-is": "~1.6.18",
+        "utils-merge": "1.0.1",
+        "vary": "~1.1.2"
+      },
+      "engines": {
+        "node": ">= 0.10.0"
+      }
+    },
+    "node_modules/finalhandler": {
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diff --git a/wasm/test_page/package.json b/wasm/test_page/package.json
new file mode 100644
index 0000000..20af6d2
--- /dev/null
+++ b/wasm/test_page/package.json
@@ -0,0 +1,7 @@
+{
+  "dependencies": {
+    "cors": "^2.8.5",
+    "express": "^4.17.1",
+    "nocache": "^2.1.0"
+  }
+}
diff --git a/wasm/test_page/start_server.sh b/wasm/test_page/start_server.sh
new file mode 100644
index 0000000..b83344b
--- /dev/null
+++ b/wasm/test_page/start_server.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+cp ../../build-wasm/wasm/bergamot-translator-worker.data .
+cp ../../build-wasm/wasm/bergamot-translator-worker.js .
+cp ../../build-wasm/wasm/bergamot-translator-worker.wasm .
+cp ../../build-wasm/wasm/bergamot-translator-worker.worker.js .
+npm install
+node bergamot-httpserver.js
\ No newline at end of file