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|
use std::{
env,
error,
fs::{File},
io::BufReader,
collections::HashMap,
};
use itertools::Itertools;
mod record;
mod drawing;
use record::Record;
pub fn run() -> Result<(), Box<dyn error::Error>> {
let records = load_contents()?;
drawing::ui(drawing::Category::Clear);
loop {
match drawing::ui(drawing::Category::Menu) {
'a' | 'A' => print_summary_by_project(&records),
'b' | 'B' => print_summary_by_time(&records),
'q' | 'Q' => {
drawing::ui(drawing::Category::Title("quit program"));
break;
},
_ => {
drawing::ui(drawing::Category::Wrong("Unsupported Option, please try again.\n"));
continue;
},
}
}
Ok(())
}
fn print_summary_by_time(records: &Vec<Record>) {
println!("placeholder");
}
fn print_summary_by_project(records: &Vec<Record>) {
let mut expenses: HashMap<String, HashMap<String, f64>> = HashMap::new();
let mut sum = HashMap::new();
/* group the project with separate currency */
for r in records.iter() {
/* exclude transfer and other type */
match r.record_type() {
"Expense" | "Fee" | "Refund" | "Income" => {
/* No project name will be ignore */
if let Some(project) = r.project() {
if project.is_empty() {
continue;
}
/* group projects with separate currency */
expenses
.entry(project)
.and_modify(|expense: &mut HashMap<String, f64>| {
expense
.entry(r.currency())
.and_modify(|v| *v += r.cal())
.or_insert(r.cal());
})
.or_insert(HashMap::from([(r.currency(), r.cal())]));
/* sum same project and currency amount */
let element = sum.entry(r.currency()).or_insert(0.0 as f64);
*element += r.cal();
}
},
_ => continue,
}
}
// print output
println!("print summary by project:");
for project in expenses.keys().sorted() {
println!("\n\t{project}");
print!("\t\t\t|");
for currency in expenses[project].keys().sorted() {
let expense = expenses[project][currency];
print!("\t{currency} {:.2}\t|", expense);
}
println!("");
}
println!("\n\n\tSummary");
print!("\t\t\t|");
for currency in sum.keys().sorted() {
print!("\t{currency} {:.2}\t|", sum[currency]);
}
println!("");
}
fn load_contents() -> Result<Vec<Record>, Box<dyn error::Error>> {
let args = env::args().skip(1).collect::<Vec<String>>();
let csv_file = check_csv(&args)?;
let mut reader = build_reader(csv_file)?;
let mut records = Vec::new();
for r in reader.records() {
let r = r.unwrap();
records.push(Record::new(r));
}
Ok(records)
}
fn build_reader(file_name: String)
-> Result<csv::Reader<BufReader<File>>, Box<dyn error::Error>>
{
let file = File::open(file_name)?;
let buf = BufReader::new(file);
let ret = csv::ReaderBuilder::new()
.flexible(true)
.from_reader(buf);
Ok(ret)
}
fn check_csv(args: &Vec<String>) -> Result<String, Box<dyn error::Error>> {
let n = args.len();
if n != 1 {
return Err(Box::from("Only 1 argument required\n\nUsage: moze_analyzer [csv_file]"));
}
if args[0].contains(".csv") {
Ok(args[0].clone())
} else {
Err(Box::from("Not csv file"))
}
}
|
