feat(258): add Convert to Client button on leads

app/(app)/leads/page.tsx

@@ -2,7 +2,8 @@
 
 import { useState } from "react";
 import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
-import { UserPlus, RefreshCw } from "lucide-react";
+import { useRouter } from "next/navigation";
+import { UserPlus, RefreshCw, ArrowRightCircle } from "lucide-react";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/Card";
 import { Table, TableHead, TableBody, TableRow, Th, Td, EmptyState } from "@/components/ui/Table";
 import { Badge } from "@/components/ui/Badge";
@@ -22,11 +23,14 @@ const statusOptions = ["NEW", "CONTACTED", "INTERESTED", "CONVERTED", "LOST"];
 
 export default function LeadsPage() {
   const qc = useQueryClient();
+  const router = useRouter();
   const [search, setSearch] = useState("");
   const [selected, setSelected] = useState<Lead | null>(null);
   const [showAdd, setShowAdd] = useState(false);
+  const [showConvert, setShowConvert] = useState(false);
   const [form, setForm] = useState({ firstName: "", lastName: "", phone: "", email: "", address: "", notes: "", source: "" });
   const [statusUpdate, setStatusUpdate] = useState("");
+  const [convertForm, setConvertForm] = useState({ firstName: "", lastName: "", phone: "", email: "", address: "", areaId: "", planId: "", billingType: "POSTPAID" });
 
   const { data = [], isLoading, refetch } = useQuery<Lead[]>({
     queryKey: ["leads", search],
@@ -79,6 +83,41 @@ export default function LeadsPage() {
     onError: (e: any) => toast.error(e.response?.data?.message ?? "Failed to delete"),
   });
 
+  const convertToClient = useMutation({
+    mutationFn: async () => {
+      const res = await api.post("/api/v1/clients", {
+        firstName: convertForm.firstName, lastName: convertForm.lastName,
+        phone: convertForm.phone, email: convertForm.email || undefined,
+        address: convertForm.address || undefined,
+        areaId: convertForm.areaId || undefined,
+        planId: convertForm.planId || undefined,
+      });
+      // Mark lead as converted
+      if (selected) await api.patch(`/api/v1/leads/${selected.id}`, { status: "CONVERTED" });
+      return res.data;
+    },
+    onSuccess: (data: any) => {
+      toast.success("Lead converted to client!");
+      setShowConvert(false);
+      setSelected(null);
+      qc.invalidateQueries({ queryKey: ["leads"] });
+      if (data?.id) router.push(`/clients/${data.id}`);
+    },
+    onError: (e: any) => toast.error(e.response?.data?.message ?? "Failed to convert lead"),
+  });
+
+  const { data: areas = [] } = useQuery<{ id: string; name: string }[]>({
+    queryKey: ["areas"],
+    queryFn: async () => { const r = await api.get("/api/v1/areas"); return Array.isArray(r.data) ? r.data : (r.data as any).data ?? []; },
+  });
+
+  const { data: activePlans = [] } = useQuery<{ id: string; name: string; monthlyPrice: number; type: string }[]>({
+    queryKey: ["plans", "active"],
+    queryFn: async () => { const r = await api.get("/api/v1/plans?isActive=true"); return Array.isArray(r.data) ? r.data : (r.data as any).data ?? []; },
+  });
+
+  const filteredConvertPlans = activePlans.filter(p => !convertForm.billingType || p.type === convertForm.billingType);
+
   const counts = statusOptions.reduce((acc, s) => ({ ...acc, [s]: data.filter(l => l.status === s).length }), {} as Record<string, number>);
 
   return (
@@ -176,14 +215,72 @@ export default function LeadsPage() {
               )}
             </div>
 
-            <div className="flex justify-between pt-1">
+            <div className="flex justify-between pt-1 flex-wrap gap-2">
+              <div className="flex gap-2">
                 <Button variant="danger" size="sm" onClick={() => { if (confirm("Delete this lead?")) deleteLead.mutate(selected.id); }} isLoading={deleteLead.isPending}>Delete</Button>
+                {selected.status !== "CONVERTED" && (
+                  <Button size="sm" variant="outline" onClick={() => {
+                    setConvertForm({
+                      firstName: selected.firstName, lastName: selected.lastName,
+                      phone: selected.phone, email: selected.email ?? "",
+                      address: selected.address ?? "", areaId: "", planId: "", billingType: "POSTPAID",
+                    });
+                    setShowConvert(true);
+                  }}>
+                    <ArrowRightCircle size={14} className="mr-1" /> Convert to Client
+                  </Button>
+                )}
+              </div>
               <Button variant="outline" size="sm" onClick={() => setSelected(null)}>Close</Button>
             </div>
           </div>
         )}
       </Modal>
 
+      {/* Convert to Client Modal */}
+      <Modal isOpen={showConvert} onClose={() => setShowConvert(false)} title="Convert Lead to Client" className="max-w-xl">
+        <div className="space-y-4">
+          <p className="text-sm text-gray-500">Pre-filled from lead data. Complete missing info to create the client.</p>
+          <div className="grid grid-cols-2 gap-3">
+            <Input label="First Name *" value={convertForm.firstName} onChange={e => setConvertForm(f => ({ ...f, firstName: e.target.value }))} />
+            <Input label="Last Name *" value={convertForm.lastName} onChange={e => setConvertForm(f => ({ ...f, lastName: e.target.value }))} />
+          </div>
+          <Input label="Phone *" value={convertForm.phone} onChange={e => setConvertForm(f => ({ ...f, phone: e.target.value }))} />
+          <Input label="Email" type="email" value={convertForm.email} onChange={e => setConvertForm(f => ({ ...f, email: e.target.value }))} />
+          <Input label="Address" value={convertForm.address} onChange={e => setConvertForm(f => ({ ...f, address: e.target.value }))} />
+          <div className="grid grid-cols-2 gap-3">
+            <div className="flex flex-col gap-1.5">
+              <label className="text-sm font-medium text-gray-700">Area</label>
+              <select className="border rounded-lg px-3 py-2 text-sm" value={convertForm.areaId} onChange={e => setConvertForm(f => ({ ...f, areaId: e.target.value }))}>
+                <option value="">— Select area —</option>
+                {areas.map(a => <option key={a.id} value={a.id}>{a.name}</option>)}
+              </select>
+            </div>
+            <div className="flex flex-col gap-1.5">
+              <label className="text-sm font-medium text-gray-700">Billing Type</label>
+              <select className="border rounded-lg px-3 py-2 text-sm" value={convertForm.billingType} onChange={e => setConvertForm(f => ({ ...f, billingType: e.target.value, planId: "" }))}>
+                <option value="POSTPAID">Postpaid</option>
+                <option value="PREPAID">Prepaid</option>
+              </select>
+            </div>
+          </div>
+          <div className="flex flex-col gap-1.5">
+            <label className="text-sm font-medium text-gray-700">Plan *</label>
+            <select className="border rounded-lg px-3 py-2 text-sm" value={convertForm.planId} onChange={e => setConvertForm(f => ({ ...f, planId: e.target.value }))}>
+              <option value="">— Select plan —</option>
+              {filteredConvertPlans.map(p => <option key={p.id} value={p.id}>{p.name} — ₱{Number(p.monthlyPrice).toLocaleString()}/mo</option>)}
+            </select>
+          </div>
+          <div className="flex justify-end gap-2">
+            <Button variant="outline" onClick={() => setShowConvert(false)}>Cancel</Button>
+            <Button onClick={() => convertToClient.mutate()} isLoading={convertToClient.isPending}
+              disabled={!convertForm.firstName || !convertForm.lastName || !convertForm.phone || !convertForm.planId}>
+              <ArrowRightCircle size={14} className="mr-1" /> Create Client
+            </Button>
+          </div>
+        </div>
+      </Modal>
+
       {/* Add Lead Modal */}
       <Modal isOpen={showAdd} onClose={() => setShowAdd(false)} title="Add New Lead">
         <div className="space-y-4">