generate_cdr_from_tariff/
generate_cdr_from_tariff.rs

1#![expect(clippy::unwrap_used, reason = "examples can panic")]
2#![expect(clippy::print_stdout, reason = "examples can log to stdout")]
3#![expect(clippy::print_stderr, reason = "examples can log to stderr")]
4
5use std::str::FromStr as _;
6
7use chrono::{DateTime, Utc};
8use ocpi_tariffs::{cdr, generate, guess, tariff, warning, Version};
9use rust_decimal::Decimal;
10
11fn main() {
12    const TARIFF_JSON: &str = include_str!(
13        "../test_data/v211/real_world/time_and_parking_time_separate_tariff/tariff.json"
14    );
15
16    let report = tariff::parse_and_report(TARIFF_JSON).unwrap();
17    let guess::Report {
18        unexpected_fields,
19        version,
20    } = report;
21
22    if !unexpected_fields.is_empty() {
23        eprintln!("Strange... there are fields in the tariff that are not defined in the spec.");
24
25        for path in &unexpected_fields {
26            eprintln!("  * {path}");
27        }
28
29        eprintln!();
30    }
31
32    let tariff = version.certain_or(Version::V221);
33
34    let config = generate::Config {
35        timezone: chrono_tz::Europe::Amsterdam,
36        start_date_time: DateTime::<Utc>::from_str("2025-06-12 18:22:33+00:00").unwrap(),
37        end_date_time: DateTime::<Utc>::from_str("2025-06-12 22:33:44+00:00").unwrap(),
38        max_current_supply_amp: Decimal::from(4),
39        max_energy_battery_kwh: Decimal::from(24),
40        max_power_supply_kw: Decimal::from(80),
41    };
42    let report = cdr::generate_from_tariff(&tariff, config).unwrap();
43    let (report, warnings) = report.into_parts();
44
45    print_warnings(&tariff, &warnings);
46
47    let generate::Report {
48        tariff_id,
49        tariff_currency_code,
50        partial_cdr,
51    } = report;
52
53    println!("CDR genereated for tariff with id: `{tariff_id}` and currency code: `{tariff_currency_code}`");
54    println!("{partial_cdr:#?}");
55}
56
57fn print_warnings(tariff: &tariff::Versioned<'_>, warnings: &warning::Set<tariff::WarningKind>) {
58    if warnings.is_empty() {
59        return;
60    }
61
62    eprintln!(
63        "WARN: {} warnings from the linting:\n {}",
64        warnings.len(),
65        warning::SetWriter::new(tariff.as_element(), warnings)
66    );
67}
generate_cdr_from_tariff/generate_cdr_from_tariff.rs

generate_cdr_from_tariff/
generate_cdr_from_tariff.rs
