1 6b2c26f4 2023-12-19 benni use std::path::Path;
  2 6b2c26f4 2023-12-19 benni use genpdf::{
  3 6b2c26f4 2023-12-19 benni     elements::{Paragraph, Break, Text, TableLayout, FrameCellDecorator},
  4 6b2c26f4 2023-12-19 benni     style::{Style, StyledString},
  5 6b2c26f4 2023-12-19 benni     error::Error,
  6 6b2c26f4 2023-12-19 benni     fonts,
  7 6b2c26f4 2023-12-19 benni     Document,
  8 6b2c26f4 2023-12-19 benni     SimplePageDecorator,
  9 6b2c26f4 2023-12-19 benni     Alignment,
 10 6b2c26f4 2023-12-19 benni     Element,
 11 6b2c26f4 2023-12-19 benni     Size,
 12 6b2c26f4 2023-12-19 benni };
 13 6b2c26f4 2023-12-19 benni use crate::data::{Invoice, Record, Business};
 14 6b2c26f4 2023-12-19 benni use super::elements::*;
 15 6b2c26f4 2023-12-19 benni 
 16 6b2c26f4 2023-12-19 benni const FONT_DIRS: &[&str] = &[
 17 6b2c26f4 2023-12-19 benni     "/usr/share/fonts/liberation",
 18 6b2c26f4 2023-12-19 benni     "/usr/share/fonts/Liberation",
 19 6b2c26f4 2023-12-19 benni     "/usr/local/share/fonts/liberation",
 20 6b2c26f4 2023-12-19 benni     "/usr/local/share/fonts/Liberation",
 21 6b2c26f4 2023-12-19 benni ];
 22 6b2c26f4 2023-12-19 benni const DEFAULT_FONT_NAME: &str = "LiberationSans";
 23 6b2c26f4 2023-12-19 benni 
 24 6b2c26f4 2023-12-19 benni macro_rules! doc {
 25 6b2c26f4 2023-12-19 benni     [$($e:expr),* $(,)?] => {
 26 6b2c26f4 2023-12-19 benni 	{
 27 6b2c26f4 2023-12-19 benni 	    let font_dir = FONT_DIRS
 28 6b2c26f4 2023-12-19 benni 		.iter()
 29 6b2c26f4 2023-12-19 benni 		.find(|path| Path::new(path).exists())
 30 6b2c26f4 2023-12-19 benni 		.unwrap();
 31 6b2c26f4 2023-12-19 benni 	    let default_font = fonts::from_files(font_dir, DEFAULT_FONT_NAME, None)
 32 6b2c26f4 2023-12-19 benni 		.unwrap();
 33 6b2c26f4 2023-12-19 benni 	    let mut doc = Document::new(default_font);
 34 6b2c26f4 2023-12-19 benni 	    $(
 35 6b2c26f4 2023-12-19 benni 		doc.push($e);
 36 6b2c26f4 2023-12-19 benni 	    )*
 37 6b2c26f4 2023-12-19 benni 	    doc
 38 6b2c26f4 2023-12-19 benni 	}
 39 6b2c26f4 2023-12-19 benni     };
 40 6b2c26f4 2023-12-19 benni }
 41 6b2c26f4 2023-12-19 benni 
 42 6b2c26f4 2023-12-19 benni macro_rules! table {
 43 6b2c26f4 2023-12-19 benni     {($($width:expr),* $(,)?) => [ $($e:expr),* $(,)? ]} => {
 44 6b2c26f4 2023-12-19 benni 	{
 45 6b2c26f4 2023-12-19 benni 	    let mut table = TableLayout::new(vec![$($width),*]);
 46 6b2c26f4 2023-12-19 benni 	    $(table.push_row($e).unwrap();)*
 47 6b2c26f4 2023-12-19 benni 	    table
 48 6b2c26f4 2023-12-19 benni 	}
 49 6b2c26f4 2023-12-19 benni     };
 50 6b2c26f4 2023-12-19 benni }
 51 6b2c26f4 2023-12-19 benni 
 52 6b2c26f4 2023-12-19 benni fn text(text: impl Into<String>, style: Style) -> Text {
 53 6b2c26f4 2023-12-19 benni     Text::new(StyledString::new(text, style))
 54 6b2c26f4 2023-12-19 benni }
 55 6b2c26f4 2023-12-19 benni 
 56 6b2c26f4 2023-12-19 benni pub fn render_to_file(invoice: &Invoice, path: &Path) -> Result<(), Error> {
 57 6b2c26f4 2023-12-19 benni     let doc = render(invoice);
 58 6b2c26f4 2023-12-19 benni     doc.render_to_file(path)
 59 6b2c26f4 2023-12-19 benni }
 60 6b2c26f4 2023-12-19 benni 
 61 6b2c26f4 2023-12-19 benni pub fn render(invoice: &Invoice) -> Document {
 62 6b2c26f4 2023-12-19 benni     let biz = &invoice.business;
 63 6b2c26f4 2023-12-19 benni     let cus = &invoice.customer;
 64 6b2c26f4 2023-12-19 benni 
 65 6b2c26f4 2023-12-19 benni     let s8  = Style::new().with_font_size(8);
 66 6b2c26f4 2023-12-19 benni     let s10 = Style::new().with_font_size(10);
 67 6b2c26f4 2023-12-19 benni     let s12 = Style::new().with_font_size(12);
 68 6b2c26f4 2023-12-19 benni     let s14 = Style::new().with_font_size(14);
 69 6b2c26f4 2023-12-19 benni     let s16 = Style::new().with_font_size(16);
 70 6b2c26f4 2023-12-19 benni     let s28 = Style::new().with_font_size(28);
 71 6b2c26f4 2023-12-19 benni 
 72 6b2c26f4 2023-12-19 benni     let mut doc = doc! [
 73 6b2c26f4 2023-12-19 benni 	Paragraph::new(&biz.name).aligned(Alignment::Center).styled(s28.bold()),
 74 6b2c26f4 2023-12-19 benni 	Break::new(3),
 75 6b2c26f4 2023-12-19 benni 	UnderlinedText::new(format!("{}, {}, {}", biz.owner_name, biz.address, biz.zip_city), s8),
 76 6b2c26f4 2023-12-19 benni 	text(&cus.name, s12),
 77 6b2c26f4 2023-12-19 benni 	text(&cus.address, s12),
 78 6b2c26f4 2023-12-19 benni 	text(&cus.zip_city, s12),
 79 6b2c26f4 2023-12-19 benni 	Break::new(1),
 80 6b2c26f4 2023-12-19 benni 	Paragraph::new(format!("Datum: {}", invoice.date())).aligned(Alignment::Right),
 81 6b2c26f4 2023-12-19 benni 	text(format!("Kunde {}", cus.id), s12),
 82 6b2c26f4 2023-12-19 benni 	text(format!("Rechnung {}", invoice.id), s16.bold()),
 83 6b2c26f4 2023-12-19 benni 	Break::new(2),
 84 6b2c26f4 2023-12-19 benni 	table(&invoice.records, s14.bold(), s12),
 85 6b2c26f4 2023-12-19 benni 	table2(&invoice.records, s12.bold()),
 86 6b2c26f4 2023-12-19 benni 	Break::new(2),
 87 6b2c26f4 2023-12-19 benni 	text("zahlbar nach Rechnungserhalt.", s10),
 88 6b2c26f4 2023-12-19 benni 	text("Kein Ausweis von Umsatzsteuer,", s10),
 89 6b2c26f4 2023-12-19 benni 	text("da Kleinunternehmer gemäß $ 19 USTG.", s10),
 90 6b2c26f4 2023-12-19 benni 	text("", s10),
 91 6b2c26f4 2023-12-19 benni 	text("Vielen Dank für Ihren Auftrag und Ihr Vertrauen.", s10),
 92 6b2c26f4 2023-12-19 benni 	Break::new(18 - invoice.records.len() as i32),
 93 6b2c26f4 2023-12-19 benni 	HorizontalLine,
 94 6b2c26f4 2023-12-19 benni 	footer(&biz, s10),
 95 6b2c26f4 2023-12-19 benni     ];
 96 6b2c26f4 2023-12-19 benni 
 97 6b2c26f4 2023-12-19 benni     doc.set_title(format!("Invoice {} for {}", invoice.id, cus.id));
 98 6b2c26f4 2023-12-19 benni     doc.set_minimal_conformance();
 99 6b2c26f4 2023-12-19 benni     doc.set_line_spacing(1.25);
100 6b2c26f4 2023-12-19 benni     doc.set_paper_size(Size::new(210, 297)); // A4
101 6b2c26f4 2023-12-19 benni 
102 6b2c26f4 2023-12-19 benni     let mut decorator = SimplePageDecorator::new();
103 6b2c26f4 2023-12-19 benni     decorator.set_margins(10);
104 6b2c26f4 2023-12-19 benni     doc.set_page_decorator(decorator);
105 6b2c26f4 2023-12-19 benni 
106 6b2c26f4 2023-12-19 benni     doc
107 6b2c26f4 2023-12-19 benni }
108 6b2c26f4 2023-12-19 benni 
109 6b2c26f4 2023-12-19 benni fn table(records: &[Record], header: Style, normal: Style) -> TableLayout {
110 6b2c26f4 2023-12-19 benni     let header = |text: &str, align: Alignment| {
111 6b2c26f4 2023-12-19 benni 	Box::new(Paragraph::new(text).aligned(align).styled(header))
112 6b2c26f4 2023-12-19 benni     };
113 6b2c26f4 2023-12-19 benni 
114 6b2c26f4 2023-12-19 benni     let row = |descr: &str, date: String, n: f32, c: f32| -> Vec<Box<dyn Element>> {
115 6b2c26f4 2023-12-19 benni 	let f = |text: StyledString| {
116 6b2c26f4 2023-12-19 benni 	    let p = Paragraph::new(text)
117 6b2c26f4 2023-12-19 benni 		.aligned(Alignment::Center)
118 6b2c26f4 2023-12-19 benni 		.styled(normal);
119 6b2c26f4 2023-12-19 benni 	    Box::new(p)
120 6b2c26f4 2023-12-19 benni 	};
121 6b2c26f4 2023-12-19 benni 	vec![
122 6b2c26f4 2023-12-19 benni 	    Box::new(Paragraph::new(format!(" {descr}")).styled(normal)),
123 6b2c26f4 2023-12-19 benni 	    f(date.into()),
124 6b2c26f4 2023-12-19 benni 	    f(format!("{n:.2}").into()),
125 6b2c26f4 2023-12-19 benni 	    f(format!("{c:.2} EUR").into()),
126 6b2c26f4 2023-12-19 benni 	    f(format!("{:.2} EUR", n * c).into()),
127 6b2c26f4 2023-12-19 benni 	]
128 6b2c26f4 2023-12-19 benni     };
129 6b2c26f4 2023-12-19 benni 
130 6b2c26f4 2023-12-19 benni     let mut table = table! {
131 6b2c26f4 2023-12-19 benni 	(15, 4, 3, 5, 5) => [
132 6b2c26f4 2023-12-19 benni 	    vec![
133 6b2c26f4 2023-12-19 benni 		header(" Beschreibung", Alignment::Left),
134 6b2c26f4 2023-12-19 benni 		header("Datum", Alignment::Center),
135 6b2c26f4 2023-12-19 benni 		header("Anzahl", Alignment::Center),
136 6b2c26f4 2023-12-19 benni 		header("Preis", Alignment::Center),
137 6b2c26f4 2023-12-19 benni 		header("Gesamt", Alignment::Center),
138 6b2c26f4 2023-12-19 benni 	    ]
139 6b2c26f4 2023-12-19 benni 	]
140 6b2c26f4 2023-12-19 benni     };
141 6b2c26f4 2023-12-19 benni 
142 6b2c26f4 2023-12-19 benni     for r in records {
143 6b2c26f4 2023-12-19 benni 	table.push_row(row(&r.description, r.date(), r.count, r.price)).unwrap();
144 6b2c26f4 2023-12-19 benni     }
145 6b2c26f4 2023-12-19 benni 
146 6b2c26f4 2023-12-19 benni     table.set_cell_decorator(FrameCellDecorator::new(true, true, false));
147 6b2c26f4 2023-12-19 benni     table
148 6b2c26f4 2023-12-19 benni }
149 6b2c26f4 2023-12-19 benni 
150 6b2c26f4 2023-12-19 benni fn table2(records: &[Record], style: Style) -> TableLayout {
151 6b2c26f4 2023-12-19 benni     let total: f32 = records
152 6b2c26f4 2023-12-19 benni 	.iter()
153 6b2c26f4 2023-12-19 benni 	.map(|r| r.count * r.price)
154 6b2c26f4 2023-12-19 benni 	.sum();
155 6b2c26f4 2023-12-19 benni 
156 6b2c26f4 2023-12-19 benni     let mut table = table! {
157 6b2c26f4 2023-12-19 benni 	(1, 1) => [
158 6b2c26f4 2023-12-19 benni 	    vec![
159 6b2c26f4 2023-12-19 benni 		Box::new(Paragraph::new(" Netto").styled(style)),
160 6b2c26f4 2023-12-19 benni 		Box::new(Paragraph::new(format!("{total:.2} EUR ")).aligned(Alignment::Right).styled(style)),
161 6b2c26f4 2023-12-19 benni 	    ]
162 6b2c26f4 2023-12-19 benni 	]
163 6b2c26f4 2023-12-19 benni     };
164 6b2c26f4 2023-12-19 benni 
165 6b2c26f4 2023-12-19 benni     table.set_cell_decorator(FrameCellDecorator::new(false, true, false));
166 6b2c26f4 2023-12-19 benni     table
167 6b2c26f4 2023-12-19 benni }
168 6b2c26f4 2023-12-19 benni 
169 6b2c26f4 2023-12-19 benni fn footer(biz: &Business, style: Style) -> TableLayout {
170 6b2c26f4 2023-12-19 benni     let f = |text, align| {
171 6b2c26f4 2023-12-19 benni 	Box::new(Paragraph::new(text).aligned(align).styled(style))
172 6b2c26f4 2023-12-19 benni     };
173 6b2c26f4 2023-12-19 benni     let row = |a: &str, b: &str, c: &str| -> Vec<Box<dyn Element>> {
174 6b2c26f4 2023-12-19 benni 	vec![
175 6b2c26f4 2023-12-19 benni 	    f(a.to_string(), Alignment::Left),
176 6b2c26f4 2023-12-19 benni 	    f(b.to_string(), Alignment::Center),
177 6b2c26f4 2023-12-19 benni 	    f(c.to_string(), Alignment::Right)
178 6b2c26f4 2023-12-19 benni 	]
179 6b2c26f4 2023-12-19 benni     };
180 6b2c26f4 2023-12-19 benni     table! {
181 6b2c26f4 2023-12-19 benni 	(1, 1, 1) => [
182 6b2c26f4 2023-12-19 benni 	    row(&biz.owner_name, "", &biz.iban),
183 6b2c26f4 2023-12-19 benni 	    row(&biz.address, &biz.ustid, &biz.bic),
184 6b2c26f4 2023-12-19 benni 	    row(&biz.zip_city, "", &biz.bank),
185 6b2c26f4 2023-12-19 benni 	    row(&biz.email, "", ""),
186 6b2c26f4 2023-12-19 benni 	]
187 6b2c26f4 2023-12-19 benni     }
188 6b2c26f4 2023-12-19 benni }