feat: Implemented Favouriting for a user

Co-Authored-By: Tadios Temesgen <tt2022@ic.ac.uk>

src/lib/components/Favourite.svelte

@@ -0,0 +1,40 @@
+<script lang="ts">
+    interface Props {
+        isFavourite: boolean;
+        onToggleFavourite: () => void;
+    }
+
+    const { isFavourite, onToggleFavourite }: Props = $props();
+
+    function handleClick(event: MouseEvent) {
+        event.preventDefault();
+        event.stopPropagation();
+        onToggleFavourite();
+    }
+</script>
+
+<button
+    type="button"
+    class="fav-button"
+    onclick={handleClick}
+    aria-label="Toggle favourite"
+    style="color: {isFavourite ? 'red' : '#eaffeb'}"
+>
+    {#if isFavourite}
+        ❤️
+    {:else}
+        🤍
+    {/if}
+</button>
+
+<style>
+    .fav-button {
+        background: none;
+        border: none;
+        font-size: 1.5rem;
+        cursor: pointer;
+        display: block;
+        margin: 0.5rem auto 0;
+        line-height: 1;
+    }
+</style>

src/lib/components/OpeningTimes.svelte

@@ -19,7 +19,7 @@
     let openingDisplay = $state("");
     if (todayHours) {
         openingDisplay = todayHours.open_today_status
-            ? "Open 24/7"
+            ? "Open All Day"
             : `${formatTime(todayHours.opens_at)} - ${formatTime(todayHours.closes_at)}`;
     } else {
         openingDisplay = "Closed";

src/lib/components/SpaceCard.svelte

@@ -1,6 +1,7 @@
 <script lang="ts">
     import CompulsoryTags from "./CompulsoryTags.svelte";
     import OpeningTimes from "./OpeningTimes.svelte";
+    import Favourite from "./Favourite.svelte";
     import type { Table } from "$lib";
 
     interface Props {
@@ -9,13 +10,21 @@
         alt: string;
         imgSrc: string;
         href?: string;
+        isFavourite: boolean;
+        onToggleFavourite: () => void;
     }
 
-    const { space, hours, alt, imgSrc, href }: Props = $props();
+    const { space, hours, alt, imgSrc, href, isFavourite, onToggleFavourite }: Props = $props();
 </script>
 
 <a class="card" {href}>
-    <img src={imgSrc} {alt} />
+    <!-- <img src={imgSrc} {alt} /> -->
+    <div class="image-container">
+        <img src={imgSrc} {alt} />
+        <div class="fav-button">
+            <Favourite {isFavourite} {onToggleFavourite} />
+        </div>
+    </div>
     <div class="description">
         <h1>{space.location}</h1>
         <div class="compulsoryContainer"><CompulsoryTags {space} /></div>
@@ -84,4 +93,17 @@
         gap: 0.3rem;
         font-size: 0.8rem;
     }
+
+    .image-container {
+        position: relative;
+    }
+    .image-container .fav-button {
+        position: absolute;
+        top: 0.5rem;
+        right: 0.5rem;
+        background: rgba(11, 128, 34, 0.4);
+        border-radius: 50%;
+        padding: 0.25rem;
+        z-index: 1;
+    }
 </style>

src/lib/database.d.ts

@@ -202,6 +202,42 @@ export type Database = {
         }
         Relationships: []
       }
+      favourite_study_spaces: {
+        Row: {
+          user_id: string
+          study_space_id: string
+          created_at: string | null
+          updated_at: string | null
+        }
+        Insert: {
+          user_id: string
+          study_space_id: string
+          created_at?: string | null
+          updated_at?: string | null
+        }
+        Update: {
+          user_id?: string
+          study_space_id?: string
+          created_at?: string | null
+          updated_at?: string | null
+        }
+        Relationships: [
+          {
+            foreignKeyName: "favourite_study_spaces_user_id_fkey"
+            columns: ["user_id"]
+            isOneToOne: false
+            referencedRelation: "users"
+            referencedColumns: ["id"]
+          },
+          {
+            foreignKeyName: "favourite_study_spaces_study_space_id_fkey"
+            columns: ["study_space_id"]
+            isOneToOne: false
+            referencedRelation: "study_spaces"
+            referencedColumns: ["id"]
+          }
+        ]
+      }
     }
     Views: {
       [_ in never]: never

src/routes/+page.server.ts

@@ -8,7 +8,25 @@ export const load: PageServerLoad = async ({ depends, locals: { supabase } }) =>
         .select("*, study_space_images(*), study_space_hours(*)");
     if (err) error(500, "Failed to load study spaces");
 
+    const {
+        data: { session }
+    } = await supabase.auth.getSession();
+
+    // Fetch this user’s favourites
+    let favouriteIds: string[] = [];
+    if (session?.user?.id) {
+        const { data: favs, error: favErr } = await supabase
+            .from("favourite_study_spaces")
+            .select("study_space_id")
+            .eq("user_id", session.user.id);
+        if (!favErr && favs) {
+            favouriteIds = favs.map((f) => f.study_space_id);
+        }
+    }
+
     return {
-        studySpaces
+        studySpaces,
+        session,
+        favouriteIds
     };
 };

src/routes/+page.svelte

@@ -7,18 +7,46 @@
     import Button from "$lib/components/Button.svelte";
 
     const { data } = $props();
-    const { studySpaces, supabase, session, adminMode } = $derived(data);
+    const {
+        studySpaces,
+        supabase,
+        session,
+        adminMode,
+        favouriteIds: initialFavourites = []
+    } = $derived(data);
 
     let selectedTags = $state<string[]>([]);
     let tagFilter = $state("");
+    let tagFilterElem = $state<HTMLInputElement>();
+
     let openingFilter = $state("");
     let closingFilter = $state("");
-    let tagFilterElem = $state<HTMLInputElement>();
+
+    let favouriteIds = $derived<string[]>(initialFavourites);
+    let showFavourites = $state(false);
 
     function categorySelected(category: string[]) {
         return category.some((tag) => selectedTags.includes(tag));
     }
 
+    // Toggle a space in/out of favourites
+    async function handleToggleFavourite(id: string) {
+        if (!session?.user) return;
+        const already = favouriteIds.includes(id);
+        if (already) {
+            await supabase
+                .from("favourite_study_spaces")
+                .delete()
+                .match({ user_id: session.user.id, study_space_id: id });
+            favouriteIds = favouriteIds.filter((x) => x !== id);
+        } else {
+            await supabase
+                .from("favourite_study_spaces")
+                .insert([{ user_id: session.user.id, study_space_id: id }]);
+            favouriteIds = [...favouriteIds, id];
+        }
+    }
+
     let filteredTags = $derived(
         allTags
             .filter((tag) => tag.toLowerCase().includes(tagFilter.toLowerCase()))
@@ -44,6 +72,8 @@
     // Combine tag and time filtering
     let filteredStudySpaces = $derived(
         studySpaces
+            // only include favourites when showFavourites===true
+            .filter((space) => !showFavourites || favouriteIds?.includes(space.id))
             // tag filtering
             .filter((space) => {
                 if (selectedTags.length === 0) return true;
@@ -114,6 +144,9 @@
         <a href="/space/new/edit">
             <img src={crossUrl} alt="new" class="new-space" />
         </a>
+        <button class="fav-button" onclick={() => (showFavourites = !showFavourites)} type="button">
+            {showFavourites ? "All spaces" : "My favourites"}
+        </button>
     {/if}
 </Navbar>
 
@@ -198,6 +231,8 @@
             imgSrc={imgUrl}
             space={studySpace}
             hours={studySpace.study_space_hours}
+            isFavourite={favouriteIds.includes(studySpace.id)}
+            onToggleFavourite={() => handleToggleFavourite(studySpace.id)}
         />
     {/each}
 </main>
@@ -356,6 +391,18 @@
         font-size: 1.2rem;
     }
 
+    .fav-button {
+        background: none;
+        border: none;
+        color: #eaffeb;
+        font-size: 1rem;
+        margin-right: 1rem;
+        cursor: pointer;
+    }
+    .fav-button:hover {
+        text-decoration: underline;
+    }
+
     @media (max-width: 20rem) {
         main {
             grid-template-columns: 1fr;

src/routes/space/[id]/+page.svelte

@@ -9,6 +9,7 @@
     import { onMount } from "svelte";
     import { gmapsLoader, daysOfWeek, formatTime, type Table } from "$lib";
     import Button from "$lib/components/Button.svelte";
+    import Favourite from "$lib/components/Favourite.svelte";
 
     const { data } = $props();
     const { space, supabase, adminMode } = $derived(data);
@@ -65,6 +66,40 @@
     for (const entry of space.study_space_hours) {
         timingsPerDay[entry.day_of_week].push(entry);
     }
+
+    let isFavourite = $state(false);
+    onMount(async () => {
+        const {
+            data: { session }
+        } = await supabase.auth.getSession();
+        if (!session?.user) return;
+        const { data: fav } = await supabase
+            .from("favourite_study_spaces")
+            .select("study_space_id")
+            .match({ user_id: session.user.id, study_space_id: space.id })
+            .single();
+        isFavourite = !!fav;
+    });
+
+    // Toggle a space in/out of favourites
+    async function handleToggleFavourite() {
+        const {
+            data: { session }
+        } = await supabase.auth.getSession();
+        if (!session?.user) return;
+        if (isFavourite) {
+            await supabase
+                .from("favourite_study_spaces")
+                .delete()
+                .match({ user_id: session.user.id, study_space_id: space.id });
+            isFavourite = false;
+        } else {
+            await supabase
+                .from("favourite_study_spaces")
+                .insert([{ user_id: session.user.id, study_space_id: space.id }]);
+            isFavourite = true;
+        }
+    }
 </script>
 
 <Navbar>
@@ -87,8 +122,11 @@
 {/if}
 <main>
     <Carousel urls={imgUrls} />
-    <div class="nameContainer">
+    <div class="titleContainer">
-        {space.location}
+        <div class="nameContainer">{space.location}</div>
+        <div class="title-fav">
+            <Favourite {isFavourite} onToggleFavourite={handleToggleFavourite} />
+        </div>
     </div>
     {#if space.description != null && space.description.length > 0}
         <p class="descContainer">
@@ -300,4 +338,18 @@
         font-family: monospace;
         color: #eaffeb;
     }
+    .titleContainer {
+        display: flex;
+        align-items: center;
+        justify-content: space-between;
+        margin: -0.5rem 0 1rem;
+    }
+    .title-fav {
+        font-size: 2rem;
+        background: rgba(0, 0, 0, 0.4);
+        border-radius: 50%;
+        padding: 0.25rem;
+        box-shadow: 0 0 0.5rem rgba(0, 0, 0, 0.7);
+        color: red;
+    }
 </style>

src/routes/space/[id]/edit/+page.svelte

@@ -658,34 +658,4 @@
         background-color: #eaffeb;
         border-radius: 5rem;
     }
-    .opening-times {
-        display: flex;
-        flex-direction: column;
-        gap: 0.5rem;
-    }
-
-    .opening-time-item {
-        display: flex;
-        align-items: center;
-        gap: 0.5rem;
-    }
-
-    .opening-time-item label {
-        margin-top: 0;
-        width: 6rem;
-    }
-
-    .opening-time-item input[type="time"] {
-        padding: 0.5rem;
-        height: 2.5rem;
-        border-radius: 0.5rem;
-        border: 2px solid #eaffeb;
-        background: none;
-        color: #eaffeb;
-    }
-
-    .opening-time-item span {
-        margin: 0 0.5rem;
-        color: #eaffeb;
-    }
 </style>

supabase/migrations/20250612104310_users-admin.sql

@@ -26,3 +26,16 @@ $$;
 CREATE TRIGGER users_handle_new_user 
 AFTER INSERT ON auth.users
 FOR EACH ROW EXECUTE FUNCTION handle_new_user();
+
+-- Table to store users' favourite study spaces
+CREATE TABLE favourite_study_spaces (
+    user_id uuid REFERENCES users(id) ON DELETE CASCADE,
+    study_space_id uuid REFERENCES study_spaces(id) ON DELETE CASCADE,
+    created_at timestamp with time zone DEFAULT now(),
+    updated_at timestamp with time zone DEFAULT now(),
+    PRIMARY KEY (user_id, study_space_id)
+);
+
+CREATE TRIGGER favourite_study_spaces_updated_at
+AFTER UPDATE ON favourite_study_spaces
+FOR EACH ROW EXECUTE FUNCTION handle_updated_at();

supabase/schemas/0001_users.sql

@@ -26,3 +26,16 @@ $$;
 CREATE TRIGGER users_handle_new_user 
 AFTER INSERT ON auth.users
 FOR EACH ROW EXECUTE FUNCTION handle_new_user();
+
+-- Table to store users' favourite study spaces
+CREATE TABLE favourite_study_spaces (
+    user_id uuid REFERENCES users(id) ON DELETE CASCADE,
+    study_space_id uuid REFERENCES study_spaces(id) ON DELETE CASCADE,
+    created_at timestamp with time zone DEFAULT now(),
+    updated_at timestamp with time zone DEFAULT now(),
+    PRIMARY KEY (user_id, study_space_id)
+);
+
+CREATE TRIGGER favourite_study_spaces_updated_at
+AFTER UPDATE ON favourite_study_spaces
+FOR EACH ROW EXECUTE FUNCTION handle_updated_at();