Link previous trip shapes for GPS positioning on circular routes (#111)

Co-authored-by: Ariel Costas Guerrero <ariel@costas.dev>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: arielcostas <94913521+arielcostas@users.noreply.github.com>

4 files changed, 147 insertions, 12 deletions

diff --git a/src/frontend/app/components/layout/AppShell.css b/src/frontend/app/components/layout/AppShell.css
index 89a4d1f..eee678c 100644
--- a/src/frontend/app/components/layout/AppShell.css
+++ b/src/frontend/app/components/layout/AppShell.css
@@ -50,14 +50,4 @@
   .app-shell__bottom-nav {
     display: none;
   }
-
-  /* Override NavBar styles for sidebar */
-  .app-shell__sidebar .navigation-bar {
-    flex-direction: column;
-    height: 100%;
-    justify-content: flex-start;
-    padding-top: 1rem;
-    gap: 1rem;
-    border-top: none;
-  }
 }
diff --git a/src/frontend/app/components/layout/AppShell.tsx b/src/frontend/app/components/layout/AppShell.tsx
index e0559ac..91f6c0d 100644
--- a/src/frontend/app/components/layout/AppShell.tsx
+++ b/src/frontend/app/components/layout/AppShell.tsx
@@ -1,11 +1,11 @@
 import React, { useState } from "react";
 import { Outlet } from "react-router";
 import { PageTitleProvider, usePageTitleContext } from "~/contexts/PageTitleContext";
-import NavBar from "../NavBar";
 import { ThemeColorManager } from "../ThemeColorManager";
 import "./AppShell.css";
 import { Drawer } from "./Drawer";
 import { Header } from "./Header";
+import NavBar from "./NavBar";
 
 const AppShellContent: React.FC = () => {
   const { title } = usePageTitleContext();
@@ -22,7 +22,7 @@ const AppShellContent: React.FC = () => {
       <Drawer isOpen={isDrawerOpen} onClose={() => setIsDrawerOpen(false)} />
       <div className="app-shell__body">
         <aside className="app-shell__sidebar">
-          <NavBar />
+          <NavBar orientation="vertical" />
         </aside>
         <main className="app-shell__main">
           <Outlet />
diff --git a/src/frontend/app/components/layout/NavBar.module.css b/src/frontend/app/components/layout/NavBar.module.css
new file mode 100644
index 0000000..504b93b
--- /dev/null
+++ b/src/frontend/app/components/layout/NavBar.module.css
@@ -0,0 +1,46 @@
+.navBar {
+  display: flex;
+  justify-content: space-around;
+  align-items: center;
+  padding: 0.5rem 0;
+
+  background-color: var(--background-color);
+  border-top: 1px solid var(--border-color);
+}
+
+.vertical {
+  flex-direction: column;
+  height: 100%;
+  justify-content: flex-start;
+  padding-top: 1rem;
+  gap: 1rem;
+  border-top: none;
+}
+
+.link {
+  flex: 1 0;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  text-decoration: none;
+  color: var(--text-color);
+  padding: 0.25rem 0;
+  border-radius: 0.5rem;
+}
+
+.link svg {
+  width: 1.375rem;
+  height: 1.375rem;
+  fill: none;
+  stroke-width: 2;
+}
+
+.link span {
+  font-size: 13px;
+  line-height: 1;
+  font-family: system-ui;
+}
+
+.active {
+  color: var(--button-background-color);
+}
diff --git a/src/frontend/app/components/layout/NavBar.tsx b/src/frontend/app/components/layout/NavBar.tsx
new file mode 100644
index 0000000..91c8810
--- /dev/null
+++ b/src/frontend/app/components/layout/NavBar.tsx
@@ -0,0 +1,99 @@
+import { Map, MapPin, Settings } from "lucide-react";
+import type { LngLatLike } from "maplibre-gl";
+import { useTranslation } from "react-i18next";
+import { Link, useLocation } from "react-router";
+import { useApp } from "../../AppContext";
+import styles from "./NavBar.module.css";
+
+// Helper: check if coordinates are within Vigo bounds
+function isWithinVigo(lngLat: LngLatLike): boolean {
+  let lng: number, lat: number;
+  if (Array.isArray(lngLat)) {
+    [lng, lat] = lngLat;
+  } else if ("lng" in lngLat && "lat" in lngLat) {
+    lng = lngLat.lng;
+    lat = lngLat.lat;
+  } else {
+    return false;
+  }
+  // Rough bounding box for Vigo
+  return lat >= 42.18 && lat <= 42.3 && lng >= -8.78 && lng <= -8.65;
+}
+
+interface NavBarProps {
+  orientation?: "horizontal" | "vertical";
+}
+
+export default function NavBar({ orientation = "horizontal" }: NavBarProps) {
+  const { t } = useTranslation();
+  const { mapState, updateMapState, mapPositionMode } = useApp();
+  const location = useLocation();
+
+  const navItems = [
+    {
+      name: t("navbar.stops", "Paradas"),
+      icon: MapPin,
+      path: "/",
+      exact: true,
+    },
+    {
+      name: t("navbar.map", "Mapa"),
+      icon: Map,
+      path: "/map",
+      callback: () => {
+        if (mapPositionMode !== "gps") {
+          return;
+        }
+
+        if (!("geolocation" in navigator)) {
+          return;
+        }
+
+        navigator.geolocation.getCurrentPosition(
+          (position) => {
+            const { latitude, longitude } = position.coords;
+            const coords: LngLatLike = [latitude, longitude];
+            if (isWithinVigo(coords)) {
+              updateMapState(coords, 16);
+            }
+          },
+          () => {}
+        );
+      },
+    },
+    {
+      name: t("navbar.settings", "Ajustes"),
+      icon: Settings,
+      path: "/settings",
+    },
+  ];
+
+  return (
+    <nav
+      className={`${styles.navBar} ${
+        orientation === "vertical" ? styles.vertical : ""
+      }`}
+    >
+      {navItems.map((item) => {
+        const Icon = item.icon;
+        const isActive = item.exact
+          ? location.pathname === item.path
+          : location.pathname.startsWith(item.path);
+
+        return (
+          <Link
+            key={item.name}
+            to={item.path}
+            className={`${styles.link} ${isActive ? styles.active : ""}`}
+            onClick={item.callback ? item.callback : undefined}
+            title={item.name}
+            aria-label={item.name}
+          >
+            <Icon size={24} />
+            <span>{item.name}</span>
+          </Link>
+        );
+      })}
+    </nav>
+  );
+}