"use client";

import { useEffect, useState } from "react";
import { useParams, useRouter } from "next/navigation";
import Link from "next/link";
import {
  ArrowLeft,
  Plus,
  Trash2,
  GripVertical,
  Type,
  AlignLeft,
  Mail,
  Phone,
  Hash,
  List,
  Radio,
  CheckSquare,
  FileText,
  Calendar,
  Eye,
  Settings,
  Save,
  X,
  ChevronUp,
  ChevronDown,
  BookOpen,
} from "lucide-react";
import { ApplicantFormRenderer } from "@/components/ApplicantFormRenderer";

type FieldType =
  | "short_text"
  | "long_text"
  | "email"
  | "phone"
  | "number"
  | "dropdown"
  | "radio"
  | "checkbox"
  | "file"
  | "date";

interface FormField {
  id: string;
  type: FieldType;
  label: string;
  placeholder?: string;
  required: boolean;
  options?: string[];
  helpText?: string;
  order: number;
}

interface ApplicationForm {
  id: number;
  jobId: number;
  title: string;
  description: string;
  isActive: boolean;
  fields: FormField[];
  createdAt: string;
  updatedAt: string;
}

const fieldIcons: Record<FieldType, any> = {
  short_text: Type,
  long_text: AlignLeft,
  email: Mail,
  phone: Phone,
  number: Hash,
  dropdown: List,
  radio: Radio,
  checkbox: CheckSquare,
  file: FileText,
  date: Calendar,
};

const fieldLabels: Record<FieldType, string> = {
  short_text: "Short Text",
  long_text: "Long Text",
  email: "Email",
  phone: "Phone",
  number: "Number",
  dropdown: "Dropdown",
  radio: "Radio Buttons",
  checkbox: "Checkbox",
  file: "File Upload",
  date: "Date",
};

const defaultFields: FormField[] = [
  { id: "name", type: "short_text", label: "Full Name", required: true, order: 0 },
  { id: "email", type: "email", label: "Email Address", required: true, order: 1 },
  { id: "phone", type: "phone", label: "Phone Number", required: false, order: 2 },
  { id: "resume", type: "file", label: "Resume", required: true, order: 3 },
  { id: "cover_letter", type: "long_text", label: "Cover Letter", required: false, order: 4 },
];

export default function JobApplicationsPage() {
  const params = useParams();
  const router = useRouter();
  const jobId = params.id as string;
  const [form, setForm] = useState<ApplicationForm | null>(null);
  const [loading, setLoading] = useState(true);
  const [editing, setEditing] = useState(false);
  const [saving, setSaving] = useState(false);
  const [selectedField, setSelectedField] = useState<FormField | null>(null);
  const [showAddField, setShowAddField] = useState(false);
  const [currentUser, setCurrentUser] = useState<{
    name: string;
    role: string;
  } | null>(null);
  const [canEditForms, setCanEditForms] = useState(false);
  const [apiError, setApiError] = useState("");

  // Library templates state
  const [libraryTemplates, setLibraryTemplates] = useState<any[]>([]);
  const [showLibraryModal, setShowLibraryModal] = useState(false);

  // Preview modal state
  const [showPreviewModal, setShowPreviewModal] = useState(false);

  async function openLibraryModal() {
    setShowLibraryModal(true);
    try {
      const res = await fetch("/api/library?type=form");
      const data = await res.json();
      setLibraryTemplates(data);
    } catch (error) {
      console.error("Failed to load template library:", error);
    }
  }

  function handleSelectLibraryTemplate(libTemplate: any) {
    if (!form) return;
    const newFields = (libTemplate.content?.fields || []).map((f: any, i: number) => ({
      ...f,
      id: `field_${i}_${Date.now()}`,
    }));
    setForm({
      ...form,
      title: libTemplate.content?.title || `${libTemplate.name} Form`,
      description: libTemplate.content?.description || libTemplate.description,
      fields: newFields,
    });
    setSelectedField(null);
    setShowLibraryModal(false);
    setEditing(true);
  }

  function normalizeForm(raw: any): ApplicationForm {
    const fields = Array.isArray(raw?.fields) ? raw.fields : defaultFields;
    return {
      id: raw?.id ?? 0,
      jobId: raw?.jobId ?? parseInt(jobId),
      title: raw?.title || "Job Application",
      description: raw?.description || "",
      isActive: typeof raw?.isActive === "boolean" ? raw.isActive : true,
      fields: fields.map((field: FormField, index: number) => ({
        id: field.id || `field_${index}_${Date.now()}`,
        type: field.type || "short_text",
        label: field.label || "Untitled Field",
        placeholder: field.placeholder || "",
        required: Boolean(field.required),
        options: Array.isArray(field.options) ? field.options.filter(Boolean) : undefined,
        helpText: field.helpText || "",
        order: typeof field.order === "number" ? field.order : index,
      })),
      createdAt: raw?.createdAt || "",
      updatedAt: raw?.updatedAt || "",
    };
  }

  async function loadForm() {
    setLoading(true);
    setApiError("");
    try {
      const [formsRes, meRes] = await Promise.all([
        fetch(`/api/forms?jobId=${jobId}`),
        fetch("/api/me"),
      ]);
      const forms = await formsRes.json();
      const me = await meRes.json();

      setCurrentUser(me.user || null);
      const canManage = Boolean(me.permissions?.canManageForms);
      setCanEditForms(canManage);
      // Start editable for admins/recruiters so the form is immediately usable.
      setEditing(canManage);

      if (Array.isArray(forms) && forms.length > 0) {
        setForm(normalizeForm(forms[0]));
      } else {
        setForm(
          normalizeForm({
            id: 0,
            jobId: parseInt(jobId),
            title: "Job Application",
            description: "",
            isActive: true,
            fields: defaultFields,
          })
        );
      }
    } catch (error) {
      console.error("Failed to load application form:", error);
      setApiError("Failed to load application form.");
      setForm(
        normalizeForm({
          id: 0,
          jobId: parseInt(jobId),
          title: "Job Application",
          description: "",
          isActive: true,
          fields: defaultFields,
        })
      );
    } finally {
      setLoading(false);
    }
  }

  useEffect(() => {
    loadForm();
  }, [jobId]);

  async function saveForm() {
    if (!form) return;
    if (!canEditForms) {
      setApiError("You don't have permission to edit application forms.");
      return;
    }

    setSaving(true);
    setApiError("");

    const payload = {
      ...form,
      jobId: parseInt(jobId),
      fields: form.fields.map((field, index) => ({
        ...field,
        order: index,
        options:
          field.type === "dropdown" || field.type === "radio" || field.type === "checkbox"
            ? (field.options || []).map((opt) => opt.trim()).filter(Boolean)
            : undefined,
      })),
    };

    try {
      const res = await fetch("/api/forms", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(payload),
      });
      const data = await res.json();
      if (res.ok) {
        setForm(normalizeForm(data));
        setSelectedField(null);
        setEditing(false);
        setShowAddField(false);
      } else {
        setApiError(data.error || "Failed to save form");
      }
    } catch (error) {
      console.error("Failed to save form:", error);
      setApiError("Failed to save form");
    } finally {
      setSaving(false);
    }
  }

  function addField(type: FieldType) {
    if (!form || !canEditForms) return;
    const newField: FormField = {
      id: `field_${Date.now()}`,
      type,
      label: `New ${fieldLabels[type]}`,
      required: false,
      order: form.fields.length,
      placeholder: "",
      options: type === "dropdown" || type === "radio" || type === "checkbox" ? ["Option 1", "Option 2"] : undefined,
      helpText: "",
    };
    setForm({ ...form, fields: [...form.fields, newField] });
    setSelectedField(newField);
    setShowAddField(false);
    setEditing(true);
  }

  function removeField(fieldId: string) {
    if (!form || !canEditForms) return;
    setForm({ ...form, fields: form.fields.filter((f) => f.id !== fieldId) });
    if (selectedField?.id === fieldId) setSelectedField(null);
  }

  function moveField(fieldId: string, direction: "up" | "down") {
    if (!form || !canEditForms) return;
    const index = form.fields.findIndex((f) => f.id === fieldId);
    if (index === -1) return;
    if (direction === "up" && index === 0) return;
    if (direction === "down" && index === form.fields.length - 1) return;

    const newFields = [...form.fields];
    const swapIndex = direction === "up" ? index - 1 : index + 1;
    [newFields[index], newFields[swapIndex]] = [newFields[swapIndex], newFields[index]];
    setForm({ ...form, fields: newFields.map((field, order) => ({ ...field, order })) });
  }

  function updateField(fieldId: string, updates: Partial<FormField>) {
    if (!form || !canEditForms) return;
    const nextFields = form.fields.map((f) => (f.id === fieldId ? { ...f, ...updates } : f));
    setForm({ ...form, fields: nextFields });
    const updated = nextFields.find((f) => f.id === fieldId) || null;
    setSelectedField(updated);
  }

  if (loading) {
    return (
      <div className="flex items-center justify-center h-full">
        <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-blue-600" />
      </div>
    );
  }

  return (
    <div className="p-6">
      {/* Header */}
      <div className="flex items-center gap-3 mb-6">
        <Link
          href={`/jobs/${jobId}`}
          className="p-2 hover:bg-gray-100 rounded-lg transition-colors"
        >
          <ArrowLeft className="w-5 h-5 text-gray-500" />
        </Link>
        <div>
          <h1 className="text-2xl font-bold text-gray-900">Application Form</h1>
          <p className="text-gray-500 mt-1">
            {canEditForms
              ? "Customize the application form for this position"
              : "View the application form for this position"}
          </p>
        </div>
        {currentUser && (
          <div className="ml-2 flex items-center gap-2">
            <span className="text-xs bg-gray-100 text-gray-600 px-2.5 py-1 rounded-full capitalize">
              Signed in as {currentUser.name.replace(" ", "").slice(0, 2)} ({currentUser.role.replace("_", " ")})
            </span>
          </div>
        )}
        {form && (
          <div className="ml-auto flex items-center gap-2">
            <span className={`text-xs px-2.5 py-1 rounded-full font-medium ${form.isActive ? "bg-green-100 text-green-700" : "bg-gray-100 text-gray-600"}`}>
              {form.isActive ? "Active" : "Inactive"}
            </span>

            {canEditForms && (
              <button
                onClick={openLibraryModal}
                className="flex items-center gap-2 px-3.5 py-2 bg-white border border-gray-300 text-gray-800 rounded-lg hover:bg-gray-50 transition-colors text-sm font-bold shadow-sm"
              >
                <BookOpen className="w-4 h-4 text-blue-600" />
                <span>Choose from Library</span>
              </button>
            )}

            <button
              onClick={() => setShowPreviewModal(true)}
              className="flex items-center gap-2 px-3.5 py-2 bg-white border border-gray-300 text-gray-800 rounded-lg hover:bg-gray-50 transition-colors text-sm font-bold shadow-sm"
              title="Preview how applicants will see this form"
            >
              <Eye className="w-4 h-4 text-blue-600" />
              <span>Preview</span>
              {editing && (
                <span className="text-[10px] font-extrabold uppercase px-1.5 py-0.5 bg-amber-100 text-amber-700 rounded ml-1">
                  Draft
                </span>
              )}
            </button>

            {canEditForms && !editing ? (
              <button
                onClick={() => { setEditing(true); setSelectedField(null); }}
                className="flex items-center gap-2 px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition-colors text-sm font-medium shadow-sm"
              >
                <Settings className="w-4 h-4" />
                Edit Form
              </button>
            ) : canEditForms && editing ? (
              <>
                <button
                  onClick={async () => {
                    setEditing(false);
                    setSelectedField(null);
                    setShowAddField(false);
                    setApiError("");
                    await loadForm();
                  }}
                  className="flex items-center gap-2 px-4 py-2 border border-gray-300 text-gray-700 rounded-lg hover:bg-gray-50 transition-colors text-sm font-medium"
                >
                  <X className="w-4 h-4" />
                  Cancel
                </button>
                <button
                  onClick={saveForm}
                  disabled={saving}
                  className="flex items-center gap-2 px-4 py-2 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition-colors text-sm font-medium disabled:opacity-50 shadow-sm"
                >
                  <Save className="w-4 h-4" />
                  {saving ? "Saving..." : "Save Form"}
                </button>
              </>
            ) : null}
          </div>
        )}
      </div>

      {!canEditForms && !loading && (
        <div className="mb-6 p-4 bg-amber-50 border border-amber-200 rounded-lg flex items-start gap-3">
          <span className="text-amber-600 text-lg">👁️</span>
          <div>
            <p className="text-sm font-medium text-amber-800">View-only access</p>
            <p className="text-sm text-amber-700 mt-1">
              Your role ({currentUser?.role.replace("_", " ")}) can view but not edit application forms. Only Administrators and Recruiters can modify form fields and settings.
            </p>
          </div>
        </div>
      )}

      {apiError && (
        <div className="mb-6 p-4 bg-red-50 border border-red-200 rounded-lg text-sm text-red-700">
          {apiError}
        </div>
      )}

      <div className="grid grid-cols-1 lg:grid-cols-3 gap-6">
        {/* Form Preview */}
        <div className="lg:col-span-2 space-y-6">
          <div className="bg-white rounded-xl border border-gray-200 shadow-sm p-6">
            <div className="mb-6">
              {editing ? (
                <>
                  <input
                    type="text"
                    value={form?.title}
                    onChange={(e) => setForm({ ...form!, title: e.target.value })}
                    className="w-full text-xl font-bold text-gray-900 border-b-2 border-gray-200 focus:border-blue-500 focus:outline-none pb-2"
                  />
                  <textarea
                    value={form?.description}
                    onChange={(e) => setForm({ ...form!, description: e.target.value })}
                    className="w-full text-sm text-gray-500 mt-2 border-b border-gray-200 focus:border-blue-500 focus:outline-none resize-none"
                    placeholder="Add a description for applicants..."
                    rows={2}
                  />
                </>
              ) : (
                <>
                  <h2 className="text-xl font-bold text-gray-900">{form?.title}</h2>
                  {form?.description && <p className="text-sm text-gray-500 mt-2">{form.description}</p>}
                </>
              )}
            </div>

            <div className="space-y-4">
              {form?.fields.map((field, index) => (
                <div
                  key={field.id}
                  onClick={() => editing && setSelectedField(field)}
                  className={`p-4 rounded-lg border-2 transition-colors cursor-pointer ${
                    selectedField?.id === field.id
                      ? "border-blue-500 bg-blue-50"
                      : "border-gray-200 hover:border-gray-300"
                  }`}
                >
                  <div className="flex items-center gap-3">
                    <div className="p-2 bg-gray-100 rounded-lg">
                      {(() => {
                        const Icon = fieldIcons[field.type] || Type;
                        return <Icon className="w-4 h-4 text-gray-500" />;
                      })()}
                    </div>
                    <div className="flex-1">
                      <div className="flex items-center gap-2">
                        <span className="font-medium text-gray-900">{field.label}</span>
                        {field.required && (
                          <span className="text-xs text-red-500 font-medium">Required</span>
                        )}
                      </div>
                      <span className="text-xs text-gray-500">{fieldLabels[field.type]}</span>
                    </div>
                    {editing && (
                      <div className="flex items-center gap-1">
                        <button
                          onClick={(e) => { e.stopPropagation(); moveField(field.id, "up"); }}
                          disabled={index === 0}
                          className="p-1.5 text-gray-400 hover:text-gray-600 hover:bg-gray-100 rounded disabled:opacity-30"
                        >
                          <ChevronUp className="w-4 h-4" />
                        </button>
                        <button
                          onClick={(e) => { e.stopPropagation(); moveField(field.id, "down"); }}
                          disabled={index === form.fields.length - 1}
                          className="p-1.5 text-gray-400 hover:text-gray-600 hover:bg-gray-100 rounded disabled:opacity-30"
                        >
                          <ChevronDown className="w-4 h-4" />
                        </button>
                        <button
                          onClick={(e) => { e.stopPropagation(); removeField(field.id); }}
                          className="p-1.5 text-gray-400 hover:text-red-600 hover:bg-red-50 rounded"
                        >
                          <Trash2 className="w-4 h-4" />
                        </button>
                      </div>
                    )}
                  </div>
                  {field.options && (
                    <div className="flex flex-wrap gap-2 mt-2">
                      {field.options.map((opt, i) => (
                        <span key={i} className="text-xs bg-gray-100 text-gray-600 px-2 py-1 rounded">
                          {opt}
                        </span>
                      ))}
                    </div>
                  )}
                </div>
              ))}
            </div>

            {editing && (
              <div className="mt-6 pt-6 border-t border-gray-200">
                <button
                  onClick={() => setShowAddField(!showAddField)}
                  className="flex items-center gap-2 text-blue-600 hover:text-blue-700 font-medium"
                >
                  <Plus className="w-4 h-4" />
                  Add Field
                </button>

                {showAddField && (
                  <div className="grid grid-cols-2 md:grid-cols-5 gap-2 mt-4">
                    {(Object.keys(fieldIcons) as FieldType[]).map((type) => {
                      const Icon = fieldIcons[type];
                      return (
                        <button
                          key={type}
                          onClick={() => addField(type)}
                          className="flex flex-col items-center gap-2 p-3 border border-gray-200 rounded-lg hover:border-blue-500 hover:bg-blue-50 transition-colors"
                        >
                          <Icon className="w-5 h-5 text-gray-500" />
                          <span className="text-xs text-gray-600">{fieldLabels[type]}</span>
                        </button>
                      );
                    })}
                  </div>
                )}
              </div>
            )}
          </div>
        </div>

        {/* Field Editor Sidebar */}
        <div className="space-y-6">
          {selectedField && editing && form?.fields.find((f) => f.id === selectedField.id) ? (
            (() => {
              const activeField = form.fields.find((f) => f.id === selectedField.id)!;
              return (
            <div className="bg-white rounded-xl border border-gray-200 shadow-sm p-5 sticky top-6">
              <h3 className="font-semibold text-gray-900 mb-4">Edit Field</h3>
              <div className="space-y-4">
                <div>
                  <label className="block text-sm font-medium text-gray-700 mb-1">Label</label>
                  <input
                    type="text"
                    value={activeField.label}
                    onChange={(e) => updateField(activeField.id, { label: e.target.value })}
                    className="w-full px-3 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 text-sm"
                  />
                </div>
                <div>
                  <label className="block text-sm font-medium text-gray-700 mb-1">Placeholder</label>
                  <input
                    type="text"
                    value={activeField.placeholder || ""}
                    onChange={(e) => updateField(activeField.id, { placeholder: e.target.value })}
                    className="w-full px-3 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 text-sm"
                  />
                </div>
                <div>
                  <label className="block text-sm font-medium text-gray-700 mb-1">Help Text</label>
                  <input
                    type="text"
                    value={activeField.helpText || ""}
                    onChange={(e) => updateField(activeField.id, { helpText: e.target.value })}
                    className="w-full px-3 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 text-sm"
                  />
                </div>
                <div className="flex items-center gap-2">
                  <input
                    type="checkbox"
                    id="required"
                    checked={activeField.required}
                    onChange={(e) => updateField(activeField.id, { required: e.target.checked })}
                    className="w-4 h-4 text-blue-600 border-gray-300 rounded focus:ring-blue-500"
                  />
                  <label htmlFor="required" className="text-sm font-medium text-gray-700">Required field</label>
                </div>
                {(activeField.type === "dropdown" || activeField.type === "radio" || activeField.type === "checkbox") && (
                  <div>
                    <label className="block text-sm font-medium text-gray-700 mb-1">Options (one per line)</label>
                    <textarea
                      value={(activeField.options || []).join("\n")}
                      onChange={(e) =>
                        updateField(activeField.id, {
                          options: e.target.value.split("\n"),
                        })
                      }
                      className="w-full px-3 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-blue-500 text-sm h-24 resize-none"
                    />
                  </div>
                )}
                <button
                  onClick={() => setSelectedField(null)}
                  className="w-full px-4 py-2 bg-gray-100 text-gray-700 rounded-lg hover:bg-gray-200 transition-colors text-sm font-medium"
                >
                  Done Editing
                </button>
              </div>
            </div>
              );
            })()
          ) : (
            <div className="bg-white rounded-xl border border-gray-200 shadow-sm p-5">
              <h3 className="font-semibold text-gray-900 mb-4">Form Settings</h3>
              <div className="space-y-4">
                <div className="flex items-center justify-between">
                  <div>
                    <span className="text-sm text-gray-700">Accepting applications</span>
                    {!canEditForms && (
                      <p className="text-xs text-gray-400 mt-0.5">Only admins/recruiters can toggle</p>
                    )}
                  </div>
                  <label className={`relative inline-flex items-center ${canEditForms ? "cursor-pointer" : "cursor-not-allowed opacity-60"}`}>
                    <input
                      type="checkbox"
                      checked={form?.isActive}
                      disabled={!canEditForms}
                      onChange={(e) => {
                        if (form && canEditForms) {
                          setForm({ ...form, isActive: e.target.checked });
                          setEditing(true);
                        }
                      }}
                      className="sr-only peer"
                    />
                    <div className="w-11 h-6 bg-gray-200 peer-focus:outline-none peer-focus:ring-2 peer-focus:ring-blue-300 rounded-full peer peer-checked:after:translate-x-full peer-checked:after:border-white after:content-[''] after:absolute after:top-[2px] after:start-[2px] after:bg-white after:border-gray-300 after:border after:rounded-full after:h-5 after:w-5 after:transition-all peer-checked:bg-blue-600"></div>
                  </label>
                </div>
                <div className="pt-4 border-t border-gray-100 space-y-2">
                  <button
                    onClick={() => setShowPreviewModal(true)}
                    className="flex items-center gap-2 w-full px-4 py-2.5 bg-blue-50 text-blue-700 rounded-lg hover:bg-blue-100 transition-colors text-sm font-medium justify-center"
                  >
                    <Eye className="w-4 h-4" />
                    Preview {editing ? "Draft" : "Form"}
                  </button>
                  <Link
                    href={`/jobs/${jobId}/applications/preview`}
                    target="_blank"
                    className="flex items-center gap-2 w-full px-4 py-2 text-gray-500 hover:text-gray-700 hover:bg-gray-50 rounded-lg transition-colors text-xs font-medium justify-center"
                  >
                    Open published form in new tab ↗
                  </Link>
                </div>
                {canEditForms && (
                  <p className="text-xs text-gray-500 pt-1">
                    Administrators and Recruiters can customize this form. Hiring Managers and Interviewers have view-only access.
                  </p>
                )}
              </div>
            </div>
          )}
        </div>
      </div>

      {/* Modal: Library Templates Drop-in selection */}
      {showLibraryModal && (
        <div className="fixed inset-0 bg-black/60 flex items-center justify-center z-50 p-4">
          <div className="bg-white rounded-3xl shadow-2xl w-full max-w-2xl max-h-[90vh] overflow-hidden flex flex-col border border-gray-100">
            <div className="px-6 py-5 bg-slate-900 text-white flex items-center justify-between">
              <h2 className="font-bold text-lg flex items-center gap-2">
                <span>📚</span> Choose from Application Forms Library
              </h2>
              <button
                onClick={() => setShowLibraryModal(false)}
                className="p-2 text-slate-400 hover:text-white hover:bg-slate-800 rounded-xl transition-colors"
              >
                <X className="w-5 h-5" />
              </button>
            </div>

            <div className="p-6 overflow-y-auto flex-1 space-y-4">
              <p className="text-sm text-gray-500 mb-2">
                Select a standard questionnaire template to instantly load its fields into your live builder:
              </p>
              {libraryTemplates.length === 0 ? (
                <div className="py-12 text-center text-gray-400">Loading library templates...</div>
              ) : (
                libraryTemplates.map((t) => (
                  <div
                    key={t.id}
                    onClick={() => handleSelectLibraryTemplate(t)}
                    className="p-5 rounded-2xl border border-gray-200/80 hover:border-blue-500 hover:bg-blue-50/40 transition-all cursor-pointer group flex items-start justify-between gap-3 shadow-sm hover:shadow"
                  >
                    <div>
                      <div className="flex items-center gap-2 mb-1">
                        <span className="text-[10px] uppercase tracking-wider font-extrabold px-2 py-0.5 bg-blue-100 text-blue-800 rounded-md">
                          {t.category}
                        </span>
                        {t.isOfficial && (
                          <span className="text-[10px] uppercase tracking-wider font-extrabold px-2 py-0.5 bg-emerald-100 text-emerald-800 rounded-md">
                            Official
                          </span>
                        )}
                      </div>
                      <h4 className="font-bold text-gray-900 text-base group-hover:text-blue-600 transition-colors">
                        {t.name}
                      </h4>
                      <p className="text-xs text-gray-600 mt-1 leading-relaxed">{t.description}</p>
                      <p className="text-[11px] text-gray-400 font-mono mt-2">
                        Includes {t.content?.fields?.length || 0} interactive form fields
                      </p>
                    </div>
                    <span className="px-3 py-1.5 bg-blue-600 text-white font-bold text-xs rounded-xl shadow-sm opacity-0 group-hover:opacity-100 transition-opacity whitespace-nowrap self-center">
                      Load Form
                    </span>
                  </div>
                ))
              )}
            </div>

            <div className="px-6 py-4 bg-gray-50 border-t border-gray-100 flex items-center justify-end">
              <button
                onClick={() => setShowLibraryModal(false)}
                className="px-5 py-2.5 text-sm font-bold text-slate-800 hover:bg-gray-200 rounded-xl transition-colors"
              >
                Cancel
              </button>
            </div>
          </div>
        </div>
      )}

      {/* Preview Modal - Shows the current unsaved draft as applicants will see it */}
      {showPreviewModal && form && (
        <div className="fixed inset-0 bg-black/60 flex items-center justify-center z-50 p-4">
          <div className="bg-gray-50 rounded-2xl shadow-2xl w-full max-w-2xl max-h-[92vh] flex flex-col overflow-hidden border border-gray-100">
            <div className="px-6 py-4 bg-slate-900 text-white flex items-center justify-between shrink-0">
              <div className="flex items-center gap-3">
                <div className="p-2 bg-blue-500/20 text-blue-400 rounded-xl">
                  <Eye className="w-5 h-5" />
                </div>
                <div>
                  <h2 className="font-bold text-lg flex items-center gap-2">
                    Applicant Preview
                    {editing && (
                      <span className="text-[10px] font-extrabold uppercase px-2 py-0.5 bg-amber-500 text-white rounded">
                        Unsaved Draft
                      </span>
                    )}
                  </h2>
                  <p className="text-xs text-slate-400">This is exactly how candidates will see your form</p>
                </div>
              </div>
              <button
                onClick={() => setShowPreviewModal(false)}
                className="p-2 text-slate-400 hover:text-white hover:bg-slate-800 rounded-xl transition-colors"
              >
                <X className="w-5 h-5" />
              </button>
            </div>

            <div className="flex-1 overflow-y-auto p-6">
              {editing && (
                <div className="mb-4 p-3 bg-amber-50 border border-amber-200 rounded-lg text-xs text-amber-800 flex items-start gap-2">
                  <span className="text-base leading-none">⚠️</span>
                  <p>
                    You&apos;re previewing unsaved changes. Applicants will not see these updates until you click <strong>Save Form</strong>.
                  </p>
                </div>
              )}
              <ApplicantFormRenderer
                title={form.title}
                description={form.description}
                fields={form.fields}
                disabled
                onSubmitDemo={() => {
                  /* preview mode - submit disabled */
                }}
              />
            </div>

            <div className="px-6 py-4 bg-white border-t border-gray-200 flex items-center justify-between shrink-0">
              <p className="text-xs text-gray-500">
                {form.fields.length} field{form.fields.length !== 1 ? "s" : ""}
                {form.fields.filter((f) => f.required).length > 0 && (
                  <> · {form.fields.filter((f) => f.required).length} required</>
                )}
              </p>
              <div className="flex items-center gap-2">
                <button
                  onClick={() => setShowPreviewModal(false)}
                  className="px-4 py-2 text-sm font-medium text-gray-700 hover:bg-gray-100 rounded-lg transition-colors"
                >
                  Back to Editor
                </button>
                {canEditForms && editing && (
                  <button
                    onClick={async () => {
                      await saveForm();
                      setShowPreviewModal(false);
                    }}
                    disabled={saving}
                    className="flex items-center gap-2 px-5 py-2 text-sm font-bold text-white bg-blue-600 hover:bg-blue-700 rounded-lg transition-colors disabled:opacity-50 shadow-sm"
                  >
                    <Save className="w-4 h-4" />
                    {saving ? "Saving..." : "Save Form"}
                  </button>
                )}
              </div>
            </div>
          </div>
        </div>
      )}
    </div>
  );
}