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use iced::{Element, widget::{column, row}};
use schist_models::{Account, Bucket, DateUtc, Transaction};
use schist_traits::{Dateable, Nowlike};
use crate::{gui::components::{Text, button, input::input}, style::{SPACING_SM, SPACING_V_SM}, traits::{Component, Viewable}};
#[derive(Clone, Debug)]
pub struct NewTransactionForm {
active_account: Option<Account>,
buckets: Vec<Bucket>,
this_year: String,
this_month: String,
today: String,
day: String,
month: String,
year: String,
bucket: String,
payee: String,
quantity: String,
submit_text: Text,
validation_err: Option<String>,
}
#[derive(Clone, Debug)]
pub enum Message {
DayInputChanged(String),
MonthInputChanged(String),
YearInputChanged(String),
BucketInputChanged(String),
PayeeInputChanged(String),
QuantityInputChanged(String),
Submit,
SetActiveAccount(Account),
SetBuckets(Vec<Bucket>),
}
pub enum Action { None, AddTransaction(Transaction) }
impl NewTransactionForm {
pub fn new(active_account: Option<Account>, buckets: Vec<Bucket>) -> Self {
let today = DateUtc::now();
Self {
active_account,
buckets,
this_year: today.year().to_string(),
this_month: today.month().to_string(),
today: today.day().to_string(),
day: String::new(),
month: String::new(),
year: String::new(),
bucket: String::new(),
payee: String::new(),
quantity: String::new(),
submit_text: Text::new("+ Add"),
validation_err: None,
}
}
fn reset(&mut self) {
self.day = String::new();
self.month = String::new();
self.year = String::new();
self.bucket = String::new();
self.payee = String::new();
self.quantity = String::new();
self.validation_err = None;
}
fn create_transaction_or_else_validation_error(&self) -> Result<Transaction, String> {
Ok(Transaction::new(
self.get_valid_account_id_or_else_validation_error()?,
self.get_valid_quantity_or_else_validation_error()?,
self.get_valid_bucket_id_or_else_validation_error()?,
&self.payee,
self.get_valid_date_or_else_validation_error()?,
""))
}
fn get_valid_account_id_or_else_validation_error(&self) -> Result<i32, String> {
match &self.active_account {
Option::Some(account) => Ok(account.id),
Option::None => Err(format!("No account selected: select an account to add a transaction.")),
}
}
fn get_valid_bucket_id_or_else_validation_error(&self) -> Result<Option<i32>, String> {
if self.bucket.trim().len() == 0 {
return Ok(None);
};
match self.buckets.iter().find(|b| String::eq(&b.name, &self.bucket)) {
Option::Some(bucket) => Ok(Some(bucket.id)),
Option::None => Err(format!(
"There's no bucket called '{}': check the buckets view to list existing buckets or to add a new one.",
self.bucket)),
}
}
fn get_valid_date_or_else_validation_error(&self) -> Result<DateUtc, String> {
let day = if self.day.trim().len() == 0 {
Ok(DateUtc::now().day())
} else {
self.day.trim().parse::<u32>()
};
let month = self.get_valid_month_or_else_validation_error()?;
let year = self.get_valid_year_or_else_validation_error()?;
let first_day_of_month = DateUtc::from_ymd(year, month, 1)
.map_err(|err| format!("Unexpected error: {}", err))?;
let days_in_month = first_day_of_month.days_in_month();
match day {
Err(_) => Err(format!("'{}' is not a valid day. Choose a number between 1 and {}.", self.day, days_in_month)),
Ok(day) => if day > 0 && day <= days_in_month {
DateUtc::from_ymd(year, month, day)
.map_err(|err| format!("Unexpected error: {}", err))
} else {
Err(format!("'{}' is not a valid day: there are only {} days in {}. Choose a number between 1 and {}.",
self.day, days_in_month, first_day_of_month.format("%m %Y"), days_in_month))
}
}
}
fn get_valid_month_or_else_validation_error(&self) -> Result<u32, String> {
if self.month.trim().len() == 0 {
return Ok(DateUtc::now().month())
};
match self.month.trim().parse::<u32>() {
Err(_) => Err(format!("'{}' is not a valid month. Choose a number between 1 and 12.", self.month)),
Ok(month) => if month > 0 && month < 13 {
Ok(month)
} else {
Err(format!("'{}' is not a valid month. Choose a number between 1 and 12.", self.month))
}
}
}
fn get_valid_year_or_else_validation_error(&self) -> Result<i32, String> {
if self.year.trim().len() == 0 {
return Ok(DateUtc::now().year())
};
self.year.trim().parse::<i32>().map_err(|_| format!("'{}' is not a valid year.", self.year))
}
fn get_valid_quantity_or_else_validation_error(&self) -> Result<i32, String> {
if self.quantity.trim().len() == 0 {
return Err(String::from("No quantity provided: insert a quantity."));
};
let pounds = self.quantity.parse::<f32>()
.map_err(|_| format!("'{}' is not a valid quantity. Use a number.", self.quantity))?;
Ok((pounds * 100.0).floor() as i32)
}
}
impl<'a> Viewable<'a, Message> for NewTransactionForm {
fn view(&'a self) -> Element<'a, Message> {
column![
Text::new(&self.validation_err.clone().unwrap_or_else(String::new)).danger().small(),
row![
input(&self.today, &self.day).on_input(Message::DayInputChanged).width(32.0),
input(&self.this_month, &self.month).on_input(Message::MonthInputChanged).width(32.0),
input(&self.this_year, &self.year).on_input(Message::YearInputChanged).width(48.0),
input("", &self.bucket).on_input(Message::BucketInputChanged).width(138.0),
input("", &self.payee).on_input(Message::PayeeInputChanged).width(266.0),
input("", &self.quantity).on_input(Message::QuantityInputChanged).width(104.0),
button(&self.submit_text, Message::Submit, false).width(64.0),
].spacing(u32::from(SPACING_SM)),
].spacing(u32::from(SPACING_V_SM))
.into()
}
}
impl<'a> Component<'a, Message, Action> for NewTransactionForm {
fn update(&mut self, message: Message) -> Action {
match message {
Message::DayInputChanged(day) => {
self.day = day;
Action::None
}
Message::MonthInputChanged(month) => {
self.month = month;
Action::None
}
Message::YearInputChanged(year) => {
self.year = year;
Action::None
}
Message::BucketInputChanged(bucket) => {
self.bucket = bucket;
Action::None
}
Message::PayeeInputChanged(payee) => {
self.payee = payee;
Action::None
}
Message::QuantityInputChanged(quantity) => {
self.quantity = quantity;
Action::None
}
Message::SetActiveAccount(account) => {
self.active_account = Some(account);
Action::None
}
Message::SetBuckets(buckets) => {
self.buckets = buckets;
Action::None
}
Message::Submit => {
match self.create_transaction_or_else_validation_error() {
Ok(transaction) => {
self.reset();
Action::AddTransaction(transaction)
}
Err(validation_err) => {
self.validation_err = Some(validation_err);
Action::None
}
}
}
}
}
}
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