feat: Added filtering by optional tags in the main page. Created TagFilter component for modularisation.

Co-Authored By: Caspar Asaam <caspar@dyn3159-95.wlan.ic.ac.uk>

src/lib/components/inputs/TagFilter.svelte

@@ -0,0 +1,202 @@
+<script lang="ts">
+    import crossUrl from "$lib/assets/cross.svg";
+    
+    export let selectedTags: string[] = [];
+    export let tagFilter: string;
+    export let tagFilterElem;
+    export let filteredTags;
+    export let dropdownVisible: boolean;
+    export let deleteTag;
+    export let addTag;
+    
+  
+</script>
+
+<form>
+  <div class="tagDisplay">
+        {#each selectedTags as tagName (tagName)}
+            <button class="tag" onclick={deleteTag(tagName)} type="button">
+                {tagName}
+                <img src={crossUrl} alt="delete" /></button
+            >
+        {/each}
+        <input
+            type="text"
+            name="tagInput"
+            class="tagInput"
+            bind:value={tagFilter}
+            bind:this={tagFilterElem}
+            onfocus={() => {
+                dropdownVisible = true;
+            }}
+            onblur={() => {
+                dropdownVisible = false;
+            }}
+            onkeypress={(event) => {
+                if (event.key === "Enter") {
+                    const tag = filteredTags[0];
+                    if (tag) addTag(tag)();
+                }
+            }}
+            placeholder="Filter by tags..."
+        />
+        {#if dropdownVisible}
+            <div class="tagDropdown">
+                {#each filteredTags as avaliableTag (avaliableTag)}
+                    <button
+                        class="avaliableTag"
+                        onclick={addTag(avaliableTag)}
+                        onmousedown={(e) => {
+                            // Keep input focused
+                            e.preventDefault();
+                            e.stopPropagation();
+                        }}
+                        type="button"
+                    >
+                        {avaliableTag}
+                    </button>
+                {/each}
+            </div>
+        {/if}
+    </div>
+  
+</form>
+
+<style>
+    form {
+        display: flex;
+        flex-direction: column;
+        padding: 1.5rem;
+        gap: 0.5rem;
+        max-width: 32rem;
+        margin: 0 auto;
+    }
+
+    label {
+        color: #ffffff;
+        margin-top: 0.5rem;
+    }
+    .submit {
+        position: sticky;
+        display: flex;
+        flex-direction: column;
+        margin-top: 0.5rem;
+        bottom: 0;
+        margin-left: -0.5rem;
+        width: calc(100% + 1rem);
+    }
+    .tagDisplay {
+        display: flex;
+        gap: 0.4rem;
+        flex-wrap: wrap;
+        align-items: left;
+        justify-content: left;
+        position: relative;
+        width: 100%;
+        height: auto;
+        padding: 0.5rem;
+        border-radius: 0.5rem;
+        border: 2px solid #eaffeb;
+        background: none;
+        color: #eaffeb;
+        font-size: 1rem;
+    }
+    .tagInput {
+        width: 100%;
+        height: 100%;
+        background: none;
+        color: #eaffeb;
+        font-size: 1rem;
+        border: none;
+        outline: none;
+    }
+    ::placeholder {
+        color: #859a90;
+        opacity: 1;
+    }
+    .tag {
+        display: flex;
+        align-items: center;
+        border-radius: 0.25rem;
+        background-color: #2e4653;
+        color: #eaffeb;
+        font-size: 0.9rem;
+        cursor: pointer;
+        border-width: 0rem;
+    }
+    .tag img {
+        width: 1rem;
+        height: 1rem;
+        margin-left: 0.2rem;
+    }
+
+    .tagDropdown {
+        width: 100%;
+        display: flex;
+        gap: 0.4rem;
+        flex-wrap: wrap;
+        position: absolute;
+        background-color: #2e4653;
+        box-shadow: 1px 1px 0.5rem rgba(0, 0, 0, 0.5);
+        border-radius: 0.5rem;
+        overflow-y: auto;
+        max-height: 10rem;
+        top: 100%;
+        left: 50%;
+        transform: translateX(-50%);
+    }
+
+    .avaliableTag {
+        width: 100%;
+        text-align: left;
+        background: none;
+        border: none;
+        color: #eaffeb;
+        font-size: 0.9rem;
+        margin: 0%;
+        padding: 0 0.8rem 0.4rem;
+    }
+    .avaliableTag:first-child {
+        padding-top: 0.6rem;
+        background-color: hsl(201, 26%, 60%);
+    }
+    .avaliableTag:last-child {
+        padding-bottom: 0.6rem;
+    }
+
+    .compulsoryTags {
+        display: grid;
+        gap: 0.4rem;
+        border-radius: 0.5rem;
+        background-color: none;
+        width: 100%;
+        font-size: 1rem;
+        grid-template-columns: repeat(3, 1fr);
+    }
+
+    .compulsoryContainer {
+        display: flex;
+        flex-direction: column;
+        align-items: left;
+        justify-content: top;
+        border-radius: 0.5rem;
+        background-color: none;
+    }
+
+    .compulsoryTagSelect {
+        width: 100%;
+        height: 100%;
+        padding: 0.5rem;
+        border-radius: 0.5rem;
+        border: 2px solid #eaffeb;
+        background: none;
+        color: #eaffeb;
+        font-size: 0.9rem;
+        text-align: left;
+    }
+
+    .compulsoryTagSelect option {
+        background-color: #2e4653;
+        color: #eaffeb;
+    }
+</style>