pager improvements. deleting working

src/component_models/pager.rs

@@ -0,0 +1,183 @@
+use chrono_tz::Tz;
+use serde::{Deserialize, Serialize};
+use serde_repr::*;
+use serenity::{builder::CreateComponents, model::interactions::message_component::ButtonStyle};
+
+use crate::{component_models::ComponentDataModel, models::reminder::look_flags::LookFlags};
+
+pub trait Pager {
+    fn next_page(&self, max_pages: usize) -> usize;
+
+    fn create_button_row(&self, max_pages: usize, comp: &mut CreateComponents);
+}
+
+#[derive(Serialize_repr, Deserialize_repr)]
+#[repr(u8)]
+enum PageAction {
+    First = 0,
+    Previous = 1,
+    Next = 2,
+    Last = 3,
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct LookPager {
+    pub flags: LookFlags,
+    pub page: usize,
+    action: PageAction,
+    pub timezone: Tz,
+}
+
+impl Pager for LookPager {
+    fn next_page(&self, max_pages: usize) -> usize {
+        match self.action {
+            PageAction::First => 0,
+            PageAction::Previous => 0.max(self.page - 1),
+            PageAction::Next => (max_pages - 1).min(self.page + 1),
+            PageAction::Last => max_pages - 1,
+        }
+    }
+
+    fn create_button_row(&self, max_pages: usize, comp: &mut CreateComponents) {
+        let next_page = self.next_page(max_pages);
+
+        let (page_first, page_prev, page_next, page_last) =
+            LookPager::buttons(self.flags, next_page, self.timezone);
+
+        comp.create_action_row(|row| {
+            row.create_button(|b| {
+                b.label("⏮️")
+                    .style(ButtonStyle::Primary)
+                    .custom_id(page_first.to_custom_id())
+                    .disabled(next_page == 0)
+            })
+            .create_button(|b| {
+                b.label("◀️")
+                    .style(ButtonStyle::Secondary)
+                    .custom_id(page_prev.to_custom_id())
+                    .disabled(next_page == 0)
+            })
+            .create_button(|b| {
+                b.label("▶️")
+                    .style(ButtonStyle::Secondary)
+                    .custom_id(page_next.to_custom_id())
+                    .disabled(next_page + 1 == max_pages)
+            })
+            .create_button(|b| {
+                b.label("⏭️")
+                    .style(ButtonStyle::Primary)
+                    .custom_id(page_last.to_custom_id())
+                    .disabled(next_page + 1 == max_pages)
+            })
+        });
+    }
+}
+
+impl LookPager {
+    pub fn new(flags: LookFlags, timezone: Tz) -> Self {
+        Self { flags, page: 0, action: PageAction::First, timezone }
+    }
+
+    pub fn buttons(
+        flags: LookFlags,
+        page: usize,
+        timezone: Tz,
+    ) -> (ComponentDataModel, ComponentDataModel, ComponentDataModel, ComponentDataModel) {
+        (
+            ComponentDataModel::LookPager(LookPager {
+                flags,
+                page,
+                action: PageAction::First,
+                timezone,
+            }),
+            ComponentDataModel::LookPager(LookPager {
+                flags,
+                page,
+                action: PageAction::Previous,
+                timezone,
+            }),
+            ComponentDataModel::LookPager(LookPager {
+                flags,
+                page,
+                action: PageAction::Next,
+                timezone,
+            }),
+            ComponentDataModel::LookPager(LookPager {
+                flags,
+                page,
+                action: PageAction::Last,
+                timezone,
+            }),
+        )
+    }
+}
+
+#[derive(Serialize, Deserialize)]
+pub struct DelPager {
+    pub page: usize,
+    action: PageAction,
+    pub timezone: Tz,
+}
+
+impl Pager for DelPager {
+    fn next_page(&self, max_pages: usize) -> usize {
+        match self.action {
+            PageAction::First => 0,
+            PageAction::Previous => 0.max(self.page - 1),
+            PageAction::Next => (max_pages - 1).min(self.page + 1),
+            PageAction::Last => max_pages - 1,
+        }
+    }
+
+    fn create_button_row(&self, max_pages: usize, comp: &mut CreateComponents) {
+        let next_page = self.next_page(max_pages);
+
+        let (page_first, page_prev, page_next, page_last) =
+            DelPager::buttons(next_page, self.timezone);
+
+        comp.create_action_row(|row| {
+            row.create_button(|b| {
+                b.label("⏮️")
+                    .style(ButtonStyle::Primary)
+                    .custom_id(page_first.to_custom_id())
+                    .disabled(next_page == 0)
+            })
+            .create_button(|b| {
+                b.label("◀️")
+                    .style(ButtonStyle::Secondary)
+                    .custom_id(page_prev.to_custom_id())
+                    .disabled(next_page == 0)
+            })
+            .create_button(|b| {
+                b.label("▶️")
+                    .style(ButtonStyle::Secondary)
+                    .custom_id(page_next.to_custom_id())
+                    .disabled(next_page + 1 == max_pages)
+            })
+            .create_button(|b| {
+                b.label("⏭️")
+                    .style(ButtonStyle::Primary)
+                    .custom_id(page_last.to_custom_id())
+                    .disabled(next_page + 1 == max_pages)
+            })
+        });
+    }
+}
+
+impl DelPager {
+    pub fn new(timezone: Tz) -> Self {
+        Self { page: 0, action: PageAction::First, timezone }
+    }
+
+    pub fn buttons(
+        page: usize,
+        timezone: Tz,
+    ) -> (ComponentDataModel, ComponentDataModel, ComponentDataModel, ComponentDataModel) {
+        (
+            ComponentDataModel::DelPager(DelPager { page, action: PageAction::First, timezone }),
+            ComponentDataModel::DelPager(DelPager { page, action: PageAction::Previous, timezone }),
+            ComponentDataModel::DelPager(DelPager { page, action: PageAction::Next, timezone }),
+            ComponentDataModel::DelPager(DelPager { page, action: PageAction::Last, timezone }),
+        )
+    }
+}