Calculate remaning amounts

src/main.rs

@@ -13,7 +13,7 @@ use iced::{
         button, column, component, horizontal_rule, horizontal_space, row, rule, scrollable, text,
         text_input,
     },
-    window, Application, Command, Event, Length, Renderer, Settings, Theme,
+    window, Alignment, Application, Command, Event, Length, Renderer, Settings, Theme,
 };
 use iced_aw::{card, modal};
 use itertools::Itertools;
@@ -667,6 +667,103 @@ impl Application for Glaurung {
             .values()
             .chain(self.variable.values().flat_map(|(_, f)| f))
             .sum::<f64>();
+        let total_earnings = self.earnings_1 + self.earnings_2;
+
+        let main_account = total_spendings;
+        let main_factor = main_account / total_earnings;
+
+        let mut remaining_1 = self.earnings_1;
+        let mut remaining_2 = self.earnings_2;
+
+        let mut same_percent = column![
+            text("Same percent").size(TEXT_H2),
+            text("Main account").size(TEXT_EMPH2),
+            text(format!(
+                "{}: {:.2} €",
+                self.config.person_1,
+                self.earnings_1 * main_factor
+            )),
+            text(format!(
+                "{}: {:.2} €",
+                self.config.person_2,
+                self.earnings_2 * main_factor
+            )),
+        ];
+
+        remaining_1 -= self.earnings_1 * main_factor;
+        remaining_2 -= self.earnings_2 * main_factor;
+
+        let mut total_depositing = main_account;
+
+        for (account, amount) in &self.savings {
+            let factor = amount / total_earnings;
+            same_percent = same_percent
+                .push(text(account).size(TEXT_EMPH2))
+                .push(text(format!(
+                    "{}: {:.2} €",
+                    self.config.person_1,
+                    self.earnings_1 * factor
+                )))
+                .push(text(format!(
+                    "{}: {:.2} €",
+                    self.config.person_2,
+                    self.earnings_2 * factor
+                )));
+
+            remaining_1 -= self.earnings_1 * factor;
+            remaining_2 -= self.earnings_2 * factor;
+            total_depositing += amount;
+        }
+
+        let remaining_per_person = (total_earnings - total_depositing) / 2.;
+
+        let mut same_remaining = column![
+            text("Same remaining").size(TEXT_H2),
+            text("Main account").size(TEXT_EMPH2),
+            text(format!(
+                "{}: {:.2} €",
+                self.config.person_1,
+                self.earnings_1 - remaining_per_person
+            )),
+            text(format!(
+                "{}: {:.2} €",
+                self.config.person_2,
+                self.earnings_2 - remaining_per_person
+            )),
+        ];
+
+        for (account, amount) in &self.savings {
+            same_remaining = same_remaining
+                .push(text(account).size(TEXT_EMPH2))
+                .push(text(format!(
+                    "{}: {:.2} €",
+                    self.config.person_1,
+                    amount / 2.,
+                )))
+                .push(text(format!(
+                    "{}: {:.2} €",
+                    self.config.person_2,
+                    amount / 2.,
+                )));
+        }
+
+        let per_person = row![
+            same_percent
+                .push(text("Remaining").size(TEXT_EMPH2))
+                .push(text(format!(
+                    "{}: {remaining_1:.2} €",
+                    self.config.person_1,
+                )))
+                .push(text(format!(
+                    "{}: {remaining_2:.2} €",
+                    self.config.person_2,
+                )),),
+            horizontal_space(Length::Fill),
+            same_remaining
+                .push(text("Remaining").size(TEXT_EMPH2))
+                .push(text(format!("{remaining_per_person:.2} € per person"))),
+        ]
+        .align_items(Alignment::Start);
 
         scrollable(
             column![
@@ -710,21 +807,18 @@ impl Application for Glaurung {
                     })
                 ]
                 .align_items(iced::Alignment::Center),
-                text(&format!(
+                text(&format!("Total earnings: {total_earnings} €",)).size(TEXT_EMPH2),
-                    "Total earnings: {} €",
-                    self.earnings_1 + self.earnings_2,
-                ))
-                .size(TEXT_EMPH2),
                 text("Outputs").size(TEXT_H1),
-                text(&format!("Main account: {total_spendings} €")).size(TEXT_EMPH2),
+                text(&format!("Main account: {main_account} €")).size(TEXT_EMPH2),
                 component(FixedAmounts {
                     items: &self.savings,
                     title: "Savings",
                     add_label: "Add a saving output",
                     on_add: Message::AddSaving,
                 }),
+                per_person,
             ]
-            .padding(5),
+            .padding(15),
         )
         .into()
     }