Jakob
650435e00c
- Read CSV files from input/ directory - Generate static HTML invoices grouped by customer and card - Filter transactions to only include fleet customers - Compact print-friendly layout with 2 decimal precision
52 lines
1.2 KiB
Rust
52 lines
1.2 KiB
Rust
use askama::Template;
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use askama_derive::Filter;
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use chrono::Utc;
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use std::collections::BTreeMap;
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use invoice_generator::{group_by_customer, read_csv_file, Customer, Transaction};
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#[derive(Template)]
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#[template(path = "index.html")]
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pub struct IndexTemplate {
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pub customers: Vec<(String, Customer)>,
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pub batches: Vec<String>,
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}
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#[derive(Template)]
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#[template(path = "customer.html")]
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pub struct CustomerTemplate {
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pub customer: &Customer,
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pub batches: Vec<String>,
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}
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pub fn calculate_card_totals(transactions: &[Transaction]) -> (f64, f64) {
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let total_amount: f64 = transactions.iter().map(|t| t.amount).sum();
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let total_volume: f64 = transactions.iter().map(|t| t.volume).sum();
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(total_amount, total_volume)
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}
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pub fn calculate_grand_total(customer: &Customer) -> f64 {
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customer
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.cards
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.values()
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.flat_map(|t| t.iter())
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.map(|t| t.amount)
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.sum()
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}
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pub fn format_amount(amount: f64) -> String {
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format!("{:.2}", amount)
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}
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pub fn format_volume(volume: f64) -> String {
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format!("{:.2}", volume)
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}
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pub fn format_date(date: &chrono::NaiveDateTime) -> String {
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date.format("%Y-%m-%d %H:%M").to_string()
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}
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pub fn now_string() -> String {
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Utc::now().format("%Y-%m-%d %H:%M").to_string()
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}
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