"use client";

import { useState } from "react";
import { useRouter } from "next/navigation";
import Link from "next/link";
import { ArrowLeft, Save } from "lucide-react";

export default function NewLeadPage() {
  const router = useRouter();
  const [form, setForm] = useState({
    patientName: "",
    country: "India",
    treatment: "Kidney Transplant",
    status: "new",
    nextAction: "",
    phone: "",
    email: "",
    notes: "",
    preferredMonth: "",
  });
  const [loading, setLoading] = useState(false);
  const [error, setError] = useState("");

  const handleSubmit = async (e: React.FormEvent) => {
    e.preventDefault();
    setLoading(true);
    setError("");
    try {
      const res = await fetch("/api/admin/leads", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(form),
      });
      if (!res.ok) throw new Error("Failed to create lead");
      router.push("/admin/leads");
    } catch (err) {
      setError(String(err));
    } finally {
      setLoading(false);
    }
  };

  return (
    <div className="max-w-2xl space-y-4">
      <div className="flex items-center gap-3">
        <Link href="/admin/leads" className="p-2 hover:bg-slate-100 rounded-lg transition-colors">
          <ArrowLeft className="w-4 h-4 text-slate-600" />
        </Link>
        <div>
          <h1 className="text-lg font-bold text-slate-900">Add New Lead</h1>
          <p className="text-xs text-slate-500">Create a new patient lead</p>
        </div>
      </div>

      <form onSubmit={handleSubmit} className="bg-white border border-slate-100 rounded-xl p-5 space-y-4">
        {error && (
          <div className="bg-red-50 border border-red-200 text-red-700 text-sm px-4 py-3 rounded-lg">
            {error}
          </div>
        )}
        <div className="grid grid-cols-1 sm:grid-cols-2 gap-4">
          <div>
            <label className="text-xs font-semibold text-slate-600 mb-1 block">Patient Name *</label>
            <input
              required
              type="text"
              value={form.patientName}
              onChange={(e) => setForm({ ...form, patientName: e.target.value })}
              className="w-full border border-slate-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-purple-400"
              placeholder="Full name"
            />
          </div>
          <div>
            <label className="text-xs font-semibold text-slate-600 mb-1 block">Country *</label>
            <select
              value={form.country}
              onChange={(e) => setForm({ ...form, country: e.target.value })}
              className="w-full border border-slate-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-purple-400"
            >
              {["Bangladesh", "India", "Thailand", "Singapore", "Malaysia", "UAE", "UK", "USA", "Other"].map((c) => (
                <option key={c}>{c}</option>
              ))}
            </select>
          </div>
          <div>
            <label className="text-xs font-semibold text-slate-600 mb-1 block">Treatment *</label>
            <select
              value={form.treatment}
              onChange={(e) => setForm({ ...form, treatment: e.target.value })}
              className="w-full border border-slate-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-purple-400"
            >
              {["Kidney Transplant", "Liver Transplant", "Cardiac Surgery", "Cancer Care", "Orthopedics", "IVF & Fertility", "Spine Surgery", "Other"].map((t) => (
                <option key={t}>{t}</option>
              ))}
            </select>
          </div>
          <div>
            <label className="text-xs font-semibold text-slate-600 mb-1 block">Status</label>
            <select
              value={form.status}
              onChange={(e) => setForm({ ...form, status: e.target.value })}
              className="w-full border border-slate-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-purple-400"
            >
              <option value="new">New</option>
              <option value="doctor_review">Doctor Review</option>
              <option value="quote_sent">Quote Sent</option>
              <option value="report_needed">Report Needed</option>
              <option value="visa_processing">Visa Processing</option>
              <option value="appointment_booked">Appointment Booked</option>
              <option value="completed">Completed</option>
              <option value="cancelled">Cancelled</option>
            </select>
          </div>
          <div>
            <label className="text-xs font-semibold text-slate-600 mb-1 block">Phone</label>
            <input
              type="tel"
              value={form.phone}
              onChange={(e) => setForm({ ...form, phone: e.target.value })}
              className="w-full border border-slate-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-purple-400"
              placeholder="+880 1XXX XXXXXX"
            />
          </div>
          <div>
            <label className="text-xs font-semibold text-slate-600 mb-1 block">Email</label>
            <input
              type="email"
              value={form.email}
              onChange={(e) => setForm({ ...form, email: e.target.value })}
              className="w-full border border-slate-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-purple-400"
              placeholder="patient@email.com"
            />
          </div>
        </div>
        <div>
          <label className="text-xs font-semibold text-slate-600 mb-1 block">Next Action</label>
          <input
            type="text"
            value={form.nextAction}
            onChange={(e) => setForm({ ...form, nextAction: e.target.value })}
            className="w-full border border-slate-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-purple-400"
            placeholder="e.g., Call 7:30 PM, Send Report Request"
          />
        </div>
        <div>
          <label className="text-xs font-semibold text-slate-600 mb-1 block">Notes</label>
          <textarea
            rows={3}
            value={form.notes}
            onChange={(e) => setForm({ ...form, notes: e.target.value })}
            className="w-full border border-slate-200 rounded-lg px-3 py-2 text-sm focus:outline-none focus:ring-2 focus:ring-purple-400 resize-none"
            placeholder="Additional notes about this patient..."
          />
        </div>
        <div className="flex gap-3 pt-2">
          <button
            type="submit"
            disabled={loading}
            className="flex items-center gap-2 bg-green-600 hover:bg-green-700 text-white text-sm font-semibold px-5 py-2.5 rounded-lg transition-colors disabled:opacity-70"
          >
            <Save className="w-4 h-4" />
            {loading ? "Saving..." : "Save Lead"}
          </button>
          <Link
            href="/admin/leads"
            className="border border-slate-200 text-slate-600 text-sm font-medium px-5 py-2.5 rounded-lg hover:bg-slate-50 transition-colors"
          >
            Cancel
          </Link>
        </div>
      </form>
    </div>
  );
}