frontend: add search and mailto

frontend/src/routes/auth/admin/users/+page.svelte

@@ -2,6 +2,7 @@
 	import Modal from '$lib/components/Modal.svelte';
 	import UserEditForm from '$lib/components/UserEditForm.svelte';
 	import SubscriptionEditForm from '$lib/components/SubscriptionEditForm.svelte';
+	import InputField from '$lib/components/InputField.svelte';
 	import { t } from 'svelte-i18n';
 	import { page } from '$app/stores';
 	import { applyAction, enhance } from '$app/forms';
@@ -25,6 +26,59 @@
 	let selectedSubscription = null;
 	let showSubscriptionModal = false;
 	let showUserModal = false;
+	let searchTerm = '';
+
+	$: filteredUsers = searchTerm ? getFilteredUsers() : users;
+
+	function handleMailButtonClick() {
+		const subject = 'Important Announcement';
+		const body = `Hello everyone,\n\nThis is an important message.`;
+		const bccEmails = filteredUsers
+			.map((/** @type{App.Locals['user']}*/ user) => user.email)
+			.join(',');
+		const encodedSubject = encodeURIComponent(subject);
+		const encodedBody = encodeURIComponent(body);
+		const mailtoLink = `mailto:?bcc=${bccEmails}&subject=${encodedSubject}&body=${encodedBody}`;
+		window.location.href = mailtoLink; // Open the mail client
+	}
+
+	/**
+	 * returns a set of users depending on the entered search query
+	 * @return {App.Locals['user'][]}*/
+	const getFilteredUsers = () => {
+		if (!searchTerm.trim()) return users;
+
+		const term = searchTerm.trim().toLowerCase();
+
+		return users.filter((/** @type{App.Locals['user']}*/ user) => {
+			const basicMatch = [
+				user.first_name?.toLowerCase(),
+				user.last_name?.toLowerCase(),
+				user.email?.toLowerCase(),
+				user.address?.toLowerCase(),
+				user.city?.toLowerCase(),
+				user.dateofbirth?.toLowerCase(),
+				user.phone?.toLowerCase(),
+				user.company?.toLowerCase(),
+				user.licence?.number?.toLowerCase()
+			].some((field) => field?.includes(term));
+
+			const subscriptionMatch = user.membership?.subscription_model?.name
+				?.toLowerCase()
+				.includes(term);
+
+			const licenceCategoryMatch = user.licence?.categories?.some((cat) =>
+				cat.category.toLowerCase().includes(term)
+			);
+
+			const addressMatch = [
+				user.address?.toLowerCase(),
+				user.zip_code?.toLowerCase(),
+				user.city?.toLowerCase()
+			].some((field) => field?.includes(term));
+			return basicMatch || subscriptionMatch || licenceCategoryMatch || addressMatch;
+		});
+	};
 
 	/**
 	 * Opens the edit modal for the selected user.
@@ -50,7 +104,7 @@
 		selectedUser = null;
 		selectedSubscription = null;
 		if (form) {
-			form.errors = undefined;
+			form.errors = [];
 		}
 	};
 
@@ -117,13 +171,32 @@
 			{#if activeSection === 'users'}
 				<div class="section-header">
 					<h2>{$t('users')}</h2>
-					<button class="btn primary" on:click={() => openEditUserModal(null)}>
-						<i class="fas fa-plus"></i>
-						{$t('add_new')}
-					</button>
+					<div class="title-container">
+						<InputField
+							name="search"
+							placeholder={$t('placeholder.search')}
+							backgroundColor="--base"
+						/>
+					</div>
+					<!-- <input type="text" bind:value={searchTerm} placeholder={$t('placeholder.search')} /> -->
+					<div>
+						<button
+							class="btn primary"
+							aria-label="Mail Users"
+							on:click={() => handleMailButtonClick()}
+						>
+							<i class="fas fa-envelope"></i>
+						</button>
+					</div>
+					<div>
+						<button class="btn primary" on:click={() => openEditUserModal(null)}>
+							<i class="fas fa-plus"></i>
+							{$t('add_new')}
+						</button>
+					</div>
 				</div>
 				<div class="accordion">
-					{#each users as user}
+					{#each filteredUsers as user}
 						<details class="accordion-item">
 							<summary class="accordion-header">
 								{user.first_name}
@@ -352,6 +425,18 @@
 {/if}
 
 <style>
+	.title-container {
+		margin: 0 1rem;
+		flex-grow: 1;
+		max-width: 500px;
+	}
+
+	.section-header {
+		display: flex;
+		align-items: center;
+		gap: 1rem;
+		margin-bottom: 1rem;
+	}
 	.container {
 		width: 100%;
 		height: 100%;
@@ -369,7 +454,6 @@
 
 	.sidebar {
 		width: 250px;
-		min-height: 600px;
 		background: var(--surface0);
 		border-right: 1px solid var(--surface1);
 	}