First Commit

index.js

@@ -0,0 +1,127 @@
+const possibleChars = "ABCDESFHIJKLMNOPQRSTUVWXYZ1234567890";
+const possibleCharsLength = possibleChars.length;
+
+function randomId(length) {
+   let ans = "";
+   for (; length > 0; length--) {
+      let idx = Math.floor(Math.random() * possibleCharsLength);
+      ans += possibleChars[idx];
+   }
+   return ans;
+}
+
+//Generating random preset, to identify possible doubles
+const preset = randomId(3);
+
+console.log("The radnom preset for this set is:", preset);
+console.log("Make shure this was not used before and if so, retry")
+var etk = {};
+
+for (var i = 0; i < 12 * 100; i++) {
+   let id = preset + randomId(6);
+   if (etk[id] !== undefined) i--;
+   else etk[id] = 1;
+}
+
+var ets = Object.keys(etk);
+
+const bluebird = require("bluebird");
+const PDFDocument = require("pdfkit");
+const doc = new PDFDocument({ size: "A4", autoFirstPage: false });
+const fs = require("fs");
+//const barcode = require("barcode");
+const bwipjs = require('bwip-js');
+const ewidth = 277;
+const eheight = 119;
+const mgap = 8.49;
+
+doc.pipe(fs.createWriteStream(__dirname + "/etiketten.pdf"));
+
+//A4 2480 x 3508
+//doc.addPage({margin: 0});
+//S = 1134
+
+//A4: [595.28, 841.89],
+// 28.29
+//o w:14,15
+//o h: 62,24
+// <------------> (277)
+// |
+// | (119)
+// |
+
+function print(xo, yo, bc) {
+   //doc.rect(xo, yo, ewidth, eheight);
+   //doc.stroke();
+
+   //Name Field
+   doc.fontSize(16);
+   var h = yo + (eheight / 4) * 3;
+   doc.text("Name", xo + 5, h + 6);
+   doc.moveTo(xo + 5, h).lineTo(xo + (ewidth / 4) * 2.2, h);
+   doc.stroke();
+   //Price Field;
+   doc.text("Preis", xo + (ewidth / 4) * 2.4 + 5, h + 6);
+   doc.moveTo(xo + (ewidth / 4) * 2.4 + 5, h).lineTo(xo + ewidth - 10, h);
+   doc.stroke();
+   //Sid Field:
+   var h = yo + (eheight / 4) + 10;
+
+   doc.text("SchülerId", xo + (ewidth / 4) * 2.4 + 5, h + 6);
+   doc.moveTo(xo + (ewidth / 4) * 2.4 + 5, h).lineTo(xo + ewidth - 10, h);
+   doc.stroke();
+   //Barcode:
+
+   var imagewidth = (ewidth / 4) * 2.2;
+   var imageheight = 20;
+   return new Promise((resolve, reject) => {
+      bwipjs.toBuffer({
+         bcid: "code128",
+         text: bc,
+         scale: 1,
+         height: imageheight,
+         width: imagewidth,
+         includetext: true,
+         textxalign: "center",
+         textsize: 15
+      }, (err, png) => {
+         if (err) return console.log(err);
+         doc.image(png, xo + 5, yo + 5, { height: 50, width: imagewidth });
+         resolve();
+      });
+   });
+}
+
+function page(items, callback, index) { //bekommt ein array mit 12 ids
+   doc.addPage({ margin: 0 });
+   var j = 0;
+   var proms = [];
+   for (var i = 0; i < 6; i++) {
+      if (j >= items.length) break;;
+      proms.push(print(14.15, 62.24 + i * eheight, items[j]));
+      j++;
+   }
+
+   for (var i = 0; i < 6; i++) {
+      if (j >= items.length) break;
+      proms.push(print(14.15 + ewidth + mgap, 62.24 + i * eheight, items[j]));
+      j++;
+   }
+   Promise.all(proms).then(() => {
+      callback(index + 12);
+   });
+}
+
+function printpack(index) {
+   if (index >= ets.length) {
+      doc.end();
+      return;
+   }
+   var i = [];
+   for (var g = 0; g < 12; g++) {
+      if (index + g >= ets.length) break;
+      i.push(ets[index + g]);
+   }
+   page(i, printpack, index);
+}
+printpack(0);