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Frank Sauerburger · Frank Sauerburger · Frank Sauerburger · Frank Sauerburger · Frank Sauerburger · Frank Sauerburger
--- a/.gitignore
+++ b/.gitignore
+__pycache__/
--- a/assets/bootstrap.min.css
+++ b/assets/bootstrap.min.css
--- a/assets/bootstrap.min.css.map
+++ b/assets/bootstrap.min.css.map
--- a/assets/custom.css
+++ b/assets/custom.css
+#dropzone {
+    border: 1px dotted #aaa;
+    margin: 3em 10em;
+    padding: 2em;
+    text-align: center;
+    font-style: italic;
+    color: #999;
+}
+
+#dropzone:hover {
+    border-color: #000;
+}
+
+
+#dropzone.drop-active {
+    background-color: #eee;
+    color: #000;
+    border-color: #000;
+}
+
+#dropzone.drop-uploading {
+    background-color: #efe;
+}
--- a/assets/jquery-3.4.1.min.js
+++ b/assets/jquery-3.4.1.min.js
--- a/assets/upload.js
+++ b/assets/upload.js
+$(function() {
+    $("#dropzone").on("dragenter", highlight);
+    $("#dropzone").on("dragover", highlight);
+    $("#dropzone").on("dragleave", unhighlight);
+    $("#dropzone").on("drop", handleDrop);
+    $("#dropzone input[type=file]").on("click", function(e) {
+      e.stopPropagation();
+    });
+    $("#dropzone input[type=file]").on("change", handleSelect);
+    $("#dropzone").on("click", function() {
+      $("#dropzone input[type=file]").trigger('click');
+    });
+});
+
+function highlight(e) {
+    e.preventDefault();
+    e.stopPropagation();
+    $("#dropzone").addClass("drop-active");
+}
+
+function unhighlight(e) {
+    e.preventDefault();
+    e.stopPropagation();
+    $("#dropzone").removeClass("drop-active");
+}
+
+function handleDrop(e) {
+    e.preventDefault();
+    e.stopPropagation();
+    ([...e.originalEvent.dataTransfer.files]).forEach(uploadFile);
+}
+
+function handleSelect(e) {
+  $("#dropzone").addClass("drop-uploading");
+  ([...e.currentTarget.files]).forEach(uploadFile);
+}
+
+function uploadFile(file) {
+    $("#dropzone").addClass("drop-uploading");
+    let formData = new FormData();
+
+    formData.append('document', file)
+    fetch("/", {
+        method: 'POST',
+        body: formData
+    })
+    .then(function() { info("File " + file.name + " sent to printer."); })
+    .catch(function() { error("An error occured while sending " + file.name + " to printer.") })
+
+}
+
+function info(text) {
+  $("#dropzone").removeClass("drop-uploading");
+  $("#dropzone").removeClass("drop-active");
+  $("#messages").append('<div class="alert alert-success">' + text + "</div>");
+  setTimeout(clear, 3000);
+}
+
+function error(text) {
+  $("#dropzone").removeClass("drop-uploading");
+  $("#dropzone").removeClass("drop-active");
+  $("#messages").append('<div class="alert alert-danger">' + text + "</div>");
+  setTimeout(clear, 3000);
+}
+
+function clear() {
+  $("#messages").empty();
+}
--- a/requirements.txt
+++ b/requirements.txt
+flask
+pycups
--- a/templates/index.html
+++ b/templates/index.html
+<!doctype html>
+<html lang="en">
+<head>
+  <meta charset="utf-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <meta name="author" content="Frank Sauerburger">
+  <title>Web2Print</title>
+  <link rel="stylesheet" href="/assets/bootstrap.min.css" />
+  <link rel="stylesheet" href="/assets/custom.css" />
+  <script src="/assets/jquery-3.4.1.min.js"></script>
+  <script src="/assets/upload.js"></script>
+</head>
+
+<body>
+  <header class="navbar navbar-expand navbar-dark bg-dark">
+    <nav class="container">
+        <div class="navbar-brand">Web2Print</div>
+    </nav>
+  </header>
+
+    <main class="container pt-3">
+    {% if not printers %}
+        <div class="alert alert-danger">
+            Cannot find any printer!
+        </div>
+    {% else %}
+        <div id="messages"></div>
+        <div class="form-group row">
+            <label class="col-form-label col-md-2" htmlFor="printer">Printer</label>
+            <select id="printer" class="form-control col-md-10">
+            {% for printer in printers %}
+                <option value="{{ printer }}">{{ printer }}</option>
+            {% endfor %}
+            </select>
+        </div>
+        <div id="dropzone">
+          Drop PDF files here.
+          <input type="file" id="document" class="d-none" />
+      </div>
+    {% endif %}
+    </main>
+</body>
+</html>
--- a/web2print.py
+++ b/web2print.py
+
+import os
+from time import time
+import cups
+from flask import Flask, render_template, request, send_from_directory
+from werkzeug.utils import secure_filename
+
+CUPS_SERVER = "10.1.9.104:631"
+cups.setServer(CUPS_SERVER)
+
+app = Flask(__name__)
+app.config['UPLOAD_FOLDER'] = "/tmp/web2print"
+os.makedirs("/tmp/web2print", exist_ok=True)
+
+@app.route('/assets/<string:resource>')
+def assets(resource):
+    return send_from_directory("assets", resource)
+
+def get_printers():
+    conn = cups.Connection()
+    return list(conn.getPrinters())
+
+@app.route('/', methods=["POST", "GET"])
+def index():
+    if (request.method == "GET") or ("document" not in request.files) or \
+            (not request.files["document"].filename):
+        return render_template("index.html", printers=printers)
+
+    file = request.files['document']
+    filename = secure_filename(file.filename)
+    local_path = os.path.join(app.config['UPLOAD_FOLDER'], filename)
+    file.save(local_path)
+
+    conn = cups.Connection()
+    conn.printFile(printers[0], local_path, "web2print-%d" % time(),
+                   {"fit-to-page": "True", "sides": "two-sided-long-edge"})
+
+    try:
+        os.remove(local_path)
+    except OSError:
+        pass
+
+    return "ok"
+
+if __name__ == '__main__':
+    printers = get_printers()
+    app.run(host="0.0.0.0")
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