price_cdr_with_known_version/
price_cdr_with_known_version.rs

1#![expect(clippy::expect_used, reason = "examples can panic")]
2#![expect(clippy::print_stderr, reason = "examples can log to stderr")]
3
4use chrono_tz::Tz;
5
6use ocpi_tariffs::{cdr, price, warning, Version};
7
8fn main() {
9    const CDR_JSON: &str =
10        include_str!("../test_data/v211/real_world/time_and_parking_time/cdr.json");
11
12    // If you know the version and timezone of a CDR you simply pass them into the `cdr::parse_with_version` fn.
13    let report = cdr::parse_with_version(CDR_JSON, Version::V211).expect("unable to parse CDR");
14    let cdr::ParseReport {
15        cdr,
16        unexpected_fields,
17    } = report;
18
19    if !unexpected_fields.is_empty() {
20        eprintln!("Strange... there are fields in the CDR that are not defined in the spec.");
21
22        for path in &unexpected_fields {
23            eprintln!("{path}");
24        }
25    }
26
27    let report = match cdr::price(&cdr, price::TariffSource::UseCdr, Tz::Europe__Amsterdam) {
28        Ok(r) => r,
29        Err(set) => {
30            let (error, warnings) = set.into_parts();
31            print_pricing_error(&error);
32            print_pricing_warnings(&warnings);
33            return;
34        }
35    };
36
37    let (report, warnings) = report.into_parts();
38    print_pricing_warnings(&warnings);
39
40    // The various fields of the `price::Report` can be examined or converted to JSON.
41    let price::Report {
42        periods: _,
43        tariff_used: _,
44        tariff_reports: _,
45        timezone: _,
46        billed_energy: _,
47        billed_parking_time: _,
48        total_charging_time: _,
49        billed_charging_time: _,
50        total_cost: _,
51        total_fixed_cost: _,
52        total_time: _,
53        total_time_cost: _,
54        total_energy: _,
55        total_energy_cost: _,
56        total_parking_time: _,
57        total_parking_cost: _,
58        total_reservation_cost: _,
59    } = report;
60}
61
62fn print_pricing_error(error: &warning::Error<price::Warning>) {
63    eprintln!(
64        "ERR: Unable to price CDR due to error at path `{}`: {}",
65        error.element().path,
66        error.warning()
67    );
68}
69
70fn print_pricing_warnings(warnings: &warning::Set<price::Warning>) {
71    if warnings.is_empty() {
72        return;
73    }
74
75    eprintln!(
76        "WARN: {} warnings from the pricing:\n {}",
77        warnings.len_warnings(),
78        warning::SetWriter::new(warnings)
79    );
80}
price_cdr_with_known_version/price_cdr_with_known_version.rs

price_cdr_with_known_version/
price_cdr_with_known_version.rs
