clndash: reorganize

Signed-off-by: William Casarin <jb55@jb55.com>

crates/notedeck_clndash/src/channels.rs

@@ -0,0 +1,124 @@
+use crate::event::LoadingState;
+use crate::ui;
+use egui::Color32;
+use serde::{Deserialize, Serialize};
+
+#[derive(Deserialize, Serialize)]
+pub struct ListPeerChannel {
+    pub short_channel_id: String,
+    pub our_reserve_msat: i64,
+    pub to_us_msat: i64,
+    pub total_msat: i64,
+    pub their_reserve_msat: i64,
+}
+
+pub struct Channel {
+    pub to_us: i64,
+    pub to_them: i64,
+    pub original: ListPeerChannel,
+}
+
+pub struct Channels {
+    pub max_total_msat: i64,
+    pub avail_in: i64,
+    pub avail_out: i64,
+    pub channels: Vec<Channel>,
+}
+
+pub fn channels_ui(ui: &mut egui::Ui, channels: &LoadingState<Channels, lnsocket::Error>) {
+    match channels {
+        LoadingState::Loaded(channels) => {
+            if channels.channels.is_empty() {
+                ui.label("no channels yet...");
+                return;
+            }
+
+            for channel in &channels.channels {
+                channel_ui(ui, channel, channels.max_total_msat);
+            }
+
+            ui.label(format!(
+                "available out {}",
+                ui::human_sat(channels.avail_out)
+            ));
+            ui.label(format!("available in {}", ui::human_sat(channels.avail_in)));
+        }
+        LoadingState::Failed(err) => {
+            ui.label(format!("error fetching channels: {err}"));
+        }
+        LoadingState::Loading => {
+            ui.label("fetching channels...");
+        }
+    }
+}
+
+pub fn channel_ui(ui: &mut egui::Ui, c: &Channel, max_total_msat: i64) {
+    // ---------- numbers ----------
+    let short_channel_id = &c.original.short_channel_id;
+
+    let cap_ratio = (c.original.total_msat as f32 / max_total_msat.max(1) as f32).clamp(0.0, 1.0);
+    // Feel free to switch to log scaling if you have whales:
+    //let cap_ratio = ((c.original.total_msat as f32 + 1.0).log10() / (max_total_msat as f32 + 1.0).log10()).clamp(0.0, 1.0);
+
+    // ---------- colors & style ----------
+    let out_color = Color32::from_rgb(84, 69, 201); // blue
+    let in_color = Color32::from_rgb(158, 56, 180); // purple
+
+    // Thickness scales with capacity, but keeps a nice minimum
+    let thickness = 10.0 + cap_ratio * 22.0; // 10 → 32 px
+    let row_h = thickness + 14.0;
+
+    // ---------- layout ----------
+    let (rect, response) = ui.allocate_exact_size(
+        egui::vec2(ui.available_width(), row_h),
+        egui::Sense::hover(),
+    );
+    let painter = ui.painter_at(rect);
+
+    let bar_rect = egui::Rect::from_min_max(
+        egui::pos2(rect.left(), rect.center().y - thickness * 0.5),
+        egui::pos2(rect.right(), rect.center().y + thickness * 0.5),
+    );
+    let corner_radius = (thickness * 0.5) as u8;
+    let out_radius = egui::CornerRadius {
+        ne: 0,
+        nw: corner_radius,
+        sw: corner_radius,
+        se: 0,
+    };
+    let in_radius = egui::CornerRadius {
+        ne: corner_radius,
+        nw: 0,
+        sw: 0,
+        se: corner_radius,
+    };
+    /*
+    painter.rect_filled(bar_rect, rounding, track_color);
+    painter.rect_stroke(bar_rect, rounding, track_stroke, egui::StrokeKind::Middle);
+    */
+
+    // Split widths
+    let usable = (c.to_us + c.to_them).max(1) as f32;
+    let out_w = (bar_rect.width() * (c.to_us as f32 / usable)).round();
+    let split_x = bar_rect.left() + out_w;
+
+    // Outbound fill (left)
+    let out_rect = egui::Rect::from_min_max(bar_rect.min, egui::pos2(split_x, bar_rect.max.y));
+    if out_rect.width() > 0.5 {
+        painter.rect_filled(out_rect, out_radius, out_color);
+    }
+
+    // Inbound fill (right)
+    let in_rect = egui::Rect::from_min_max(egui::pos2(split_x, bar_rect.min.y), bar_rect.max);
+    if in_rect.width() > 0.5 {
+        painter.rect_filled(in_rect, in_radius, in_color);
+    }
+
+    // Tooltip
+    response.on_hover_text_at_pointer(format!(
+        "Channel ID {short_channel_id}\nOutbound (ours): {} sats\nInbound (theirs): {} sats\nCapacity: {} sats",
+        ui::human_sat(c.to_us),
+        ui::human_sat(c.to_them),
+        ui::human_sat(c.original.total_msat),
+    ));
+}