Sale_System_Web/PDFGenerator.js at main · cookieMonsterG/Sale_System_Web · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
/**
 * Initialization for pdfkit library
 */
const PDFDocument = require('pdfkit');
const fs = require('fs');

//==========example of Json Object=========
const items = {
    items: [
      {
        image: "product1.png",
        item: "Toyota Car 1996",
        description: "toyota car abcdefghijklmnopqrstuvwxyz ",
        url: "none",
        quantity: 1,
        amount: 59.00
      },
      {
        image: "/Users/chenkairen/Downloads/product2.png",
        item: "desktop",
        description: "table... abcdefghijklmnopqrstuvwxyz",
        url: "none",
        quantity: 1,
        amount: 69.00
      }
    ],
    name: "kai",
    phone: "3478284533",
    email: "renc2@vt.edu"
  };

/**
 * Create PDF document with appropriate functions and file name
 */
function createPdf(itemsJson, path) {
    let doc = new PDFDocument({ margin: 50 });

    generateHeader(doc);
    generateTable(doc, itemsJson);

    doc.end();
    doc.pipe(fs.createWriteStream(path));
  }

/**
 * Generate a header for the pdf
 */
function generateHeader(doc) {
    doc
        .image("logo.png", 50, 45, { width: 140 })
        .fillColor("#444444")
        .fontSize(10)
        .text("Name: " + items.name, 450, 65, {align: "left"})
        .text("Phone: " + items.phone, 450, 80, { align: "left" })
        .text("Email: " + items.email, 450, 95, { align: "left" })
        .moveDown();
}

/**
 * Generate each items as a row to the table into the pdf file
 */
function generateTableRow(doc, y, c1, c2, c3, c4, c5) {
    doc
        .fontSize(10)
        .image(c1, 50, y, { width: 70 })
        .text(c2, 150, y)
        .text(c3, 280, y, { width: 90, align: "right" })
        .text(c4, 370, y, { width: 90, align: "right" })
        .text(c5, 0, y, { align: "right" });
}

/**
 * Generate a table where for each loop the items in the json object.
 * Create column name for items ex.("image", "item", "description", "quantity", "price")
 */
function generateTable(doc, items) {
    let i,
    itemsTableTop = 180;

    doc.font("Helvetica-Bold");
    doc
        .fontSize(10)
        .text("Image", 50, itemsTableTop)
        .text("Item", 150, itemsTableTop)
        .text("Description", 280, itemsTableTop, { width: 90, align: "right" })
        .text("Quantity", 370, itemsTableTop, { width: 90, align: "right" })
        .text("Price", 0, itemsTableTop, { align: "right" });

    generateHr(doc, itemsTableTop + 20);
    doc.font("Helvetica");

    for (i = 0; i < items.items.length; i++) {
        const item = items.items[i];
        const position = itemsTableTop + (i + 1) * 70;
        generateTableRow(
        doc,
        position,
        item.image,
        item.item,
        item.description,
        item.quantity,
        item.amount.toFixed(2)
        );
    }
}

/**
 * generate space
 */
function generateHr(doc, y) {
doc
    .strokeColor("#aaaaaa")
    .lineWidth(1)
    .moveTo(50, y)
    .lineTo(550, y)
    .stroke();
}

createPdf(items, "SampleDocument.pdf");