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use chrono::naive::NaiveDate;
use rust_decimal::Decimal;
use std::path::PathBuf;
use std::str::FromStr;
use structopt::clap::AppSettings;
use structopt::StructOpt;
use tabled::{Style, Table};
mod search;
mod store;
mod transaction;
use search::Search;
use store::Store;
use transaction::{Transaction, TransactionKind};
//TODO relative ("yesterday", "-2d", etc)
fn parse_date(s: &str) -> Result<NaiveDate, String> {
NaiveDate::parse_from_str(s, "%Y-%m-%d").map_err(|e| e.to_string())
}
#[derive(Debug)]
#[derive(StructOpt)]
enum Command {
Insert {
kind: TransactionKind,
#[structopt(long)]
account: String,
//TODO multiple
#[structopt(long)]
category: String,
#[structopt(long, parse(try_from_str = Decimal::from_str))]
amount: Decimal,
description: String,
#[structopt(long, parse(try_from_str = parse_date))]
date: Option<NaiveDate>,
},
List {
target: ListTarget,
},
#[structopt(setting = AppSettings::AllowLeadingHyphen)]
Show {
#[structopt(long, multiple = true, number_of_values = 1)]
sort: Vec<SortTarget>,
filters: Vec<String>,
},
}
#[derive(Debug)]
#[derive(StructOpt)]
enum ListTarget {
Categories,
}
impl std::str::FromStr for ListTarget {
type Err = String;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"categories" => Ok(ListTarget::Categories),
_ => Err(format!("Unknown listable: {:?}", s)),
}
}
}
#[derive(Debug)]
#[derive(StructOpt)]
enum SortTarget {
Amount,
Date,
}
impl std::str::FromStr for SortTarget {
type Err = String;
fn from_str(s: &str) -> Result<Self, Self::Err> {
match s {
"amount" => Ok(SortTarget::Amount),
"date" => Ok(SortTarget::Date),
_ => Err(format!("Unknown sort target: {:?}", s)),
}
}
}
#[derive(Debug)]
#[derive(StructOpt)]
struct Mn {
#[structopt(subcommand)]
command: Command,
}
fn main() {
let mut store = Store::open(PathBuf::from("store")).unwrap();
let args = Mn::from_args();
eprintln!("{:?}", args);
match args.command {
Command::Insert {
kind,
account,
category,
amount,
description,
date,
} => {
let transaction = Transaction {
kind,
to: account,
from: "Default".to_string(),
category,
amount,
description,
date: match date {
Some(date) => date,
None => chrono::offset::Local::today().naive_utc(),
},
};
eprintln!("{:?}", transaction);
println!("{}", transaction.id());
store.push(transaction);
store.write().unwrap();
}
Command::List {
target: ListTarget::Categories
} => {
println!("{}", store.categories().join("\n"));
}
Command::Show {
sort,
filters,
} => {
let mut search = Search::new(store.transactions());
if !filters.is_empty() {
search = search.parse(filters.join(" "));
}
let mut transactions = search.get();
if sort.is_empty() {
transactions.sort_by_key(|t| t.date);
} else {
match &sort[0] {
SortTarget::Amount => transactions.sort_by_key(|t| t.amount),
SortTarget::Date => transactions.sort_by_key(|t| t.date),
}
for i in 1..sort.len() {
//TODO This won't work with 3+ sorts in case key 2 are equal across a key 1
// border. We need to pass the earlier buckets for later sorts as well.
// `Vec<range>`?
inner_sort_by(&mut transactions, sort_by_func(&sort[i-1]), sort_by_func(&sort[i]));
}
}
println!("{}", Table::new(transactions).with(Style::psql()));
}
}
}
fn sort_by_func(sort: &SortTarget) -> impl FnMut(&&Transaction, &&Transaction) -> std::cmp::Ordering {
match sort {
SortTarget::Amount => |t1: &&Transaction, t2: &&Transaction| t1.amount.cmp(&t2.amount),
SortTarget::Date => |t1: &&Transaction, t2: &&Transaction| t1.date.cmp(&t2.date),
}
}
fn inner_sort_by<T, F>(v: &mut [T], mut outer_cmp: F, mut inner_cmp: F)
where
F: FnMut(&T, &T) -> std::cmp::Ordering,
{
// Early out
if v.len() < 2 {
return;
}
let mut lower = 0; // Lower bound of current equal range
for i in 0..v.len() {
if outer_cmp(&v[i], &v[lower]) != std::cmp::Ordering::Equal {
let upper = i;
if upper - lower > 1 {
v[lower..upper].sort_by(&mut inner_cmp);
}
lower = i;
}
}
}
|
