[Closes #8] Added authentication

app/components/ui/field/FieldError.vue

@@ -0,0 +1,50 @@
+<script setup lang="ts">
+import type { HTMLAttributes } from "vue";
+import { computed } from "vue";
+import { cn } from "@/lib/utils";
+
+const props = defineProps<{
+  class?: HTMLAttributes["class"];
+  errors?: Array<string | { message: string | undefined } | undefined>;
+}>();
+
+const content = computed(() => {
+  if (!props.errors || props.errors.length === 0) return null;
+
+  const uniqueErrors = [
+    ...new Map(
+      props.errors.filter(Boolean).map((error) => {
+        const message = typeof error === "string" ? error : error?.message;
+        return [message, error];
+      })
+    ).values(),
+  ];
+
+  if (uniqueErrors.length === 1 && uniqueErrors[0]) {
+    return typeof uniqueErrors[0] === "string" ? uniqueErrors[0] : uniqueErrors[0].message;
+  }
+
+  return uniqueErrors.map((error) => (typeof error === "string" ? error : error?.message));
+});
+</script>
+
+<template>
+  <div
+    v-if="$slots.default || content"
+    role="alert"
+    data-slot="field-error"
+    :class="cn('text-destructive text-sm font-normal', props.class)"
+  >
+    <slot v-if="$slots.default" />
+
+    <template v-else-if="typeof content === 'string'">
+      {{ content }}
+    </template>
+
+    <ul v-else-if="Array.isArray(content)" class="ml-4 flex list-disc flex-col gap-1">
+      <li v-for="(error, index) in content" :key="index">
+        {{ error }}
+      </li>
+    </ul>
+  </div>
+</template>