// components/Step2Actions.tsx
// Action bar for the Step 2 page — Back to Step 1, Apply (BizPortal), Cancel.

"use client";

import { useState } from "react";
import Link from "next/link";

interface Props {
  registrationId: string;
  status: string;
  proposedNames: string[];
}

export default function Step2Actions({ registrationId, status, proposedNames }: Props) {
  const [busy, setBusy] = useState<string | null>(null);
  const [msg, setMsg] = useState<string>("");
  const [msgKind, setMsgKind] = useState<"info" | "success" | "error" | "warn">("info");
  const [showConfirm, setShowConfirm] = useState(false);
  const [showNameOnlyConfirm, setShowNameOnlyConfirm] = useState(false);
  const [bizportalResult, setBizportalResult] = useState<any>(null);
  const [checkMailResult, setCheckMailResult] = useState<any>(null);
  const [showRevertConfirm, setShowRevertConfirm] = useState(false);

  async function runAction(action: string, confirmText?: string) {
    if (confirmText && !confirm(confirmText)) return;
    setBusy(action);
    setMsg("");
    setMsgKind("info");
    try {
      const res = await fetch(`/api/register/${registrationId}/status?action=${action}`, { method: "POST" });
      const data = await res.json();
      if (!res.ok) {
        setMsgKind("error");
        setMsg(`❌ ${data.error || `HTTP ${res.status}`}`);
        return;
      }
      if (action === "back_to_step1" || action === "bizportal_done") {
        window.location.reload();
      } else if (action === "cancel" || action === "client_requested_changes") {
        window.location.href = "/registrations";
      }
    } catch (err: unknown) {
      setMsgKind("error");
      setMsg(`❌ ${err instanceof Error ? err.message : "Error"}`);
    } finally {
      setBusy(null);
    }
  }

  async function runBizportalApply(nameOnly: boolean = false) {
    setShowConfirm(false);
    setShowNameOnlyConfirm(false);
    setBusy(nameOnly ? "apply_name_only" : "apply");
    setMsg("");
    setMsgKind("info");
    setBizportalResult(null);
    try {
      const res = await fetch(`/api/register/${registrationId}/apply-bizportal`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ nameOnly }),
      });
      const data = await res.json();
      setBizportalResult(data);
      if (data.ok && data.status === "bizportal_done") {
        setMsgKind("success");
        setMsg(`✅ ${data.message || "BizPortal name reservation confirmed. Now wait for the approval letter."}`);
        setTimeout(() => window.location.reload(), 2500);
      } else if (data.ok) {
        setMsgKind("warn");
        setMsg(`⚠ ${data.message || "Submitted but status not auto-confirmed. Check BizPortal."}`);
      } else {
        setMsgKind("error");
        setMsg(`❌ ${data.error || data.message || "Submission failed."}`);
      }
    } catch (err: unknown) {
      setMsgKind("error");
      setMsg(`❌ ${err instanceof Error ? err.message : "Error"}`);
    } finally {
      setBusy(null);
    }
  }

  async function handleApplyClick() {
    setShowConfirm(true);
  }

  async function handleNameOnlyClick() {
    setShowNameOnlyConfirm(true);
  }

  async function runRevertNewNames() {
    setShowRevertConfirm(false);
    setBusy("revert_new_names");
    setMsg("");
    setMsgKind("info");
    try {
      const res = await fetch(`/api/register/${registrationId}/status?action=revert_new_names`, { method: "POST" });
      const data = await res.json();
      if (!res.ok) {
        setMsgKind("error");
        setMsg(`❌ ${data.error || `HTTP ${res.status}`}`);
      } else {
        setMsgKind("success");
        setMsg(`✅ CIPC fields cleared. Registration reverted to Step 1 — client can submit 4 new proposed names.`);
        setTimeout(() => window.location.href = "/registrations", 2500);
      }
    } catch (err: unknown) {
      setMsgKind("error");
      setMsg(`❌ ${err instanceof Error ? err.message : "Error"}`);
    } finally {
      setBusy(null);
    }
  }

  async function runCheckMail() {
    setMsg("");
    setMsgKind("info");
    setCheckMailResult(null);
    try {
      const res = await fetch(`/api/register/${registrationId}/check-cipc-mail`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({}),
      });
      const data = await res.json();
      setCheckMailResult(data);
      if (!res.ok) {
        setMsgKind("error");
        setMsg(`❌ ${data.error || `HTTP ${res.status}`}`);
      } else if (data.firstScanner?.found || data.secondScanner?.found) {
        setMsgKind("success");
        setMsg(`✅ ${data.summary}`);
        setTimeout(() => window.location.reload(), 3000);
      } else {
        setMsgKind("info");
        setMsg(`ℹ️ ${data.summary}`);
      }
    } catch (err: unknown) {
      setMsgKind("error");
      setMsg(`❌ ${err instanceof Error ? err.message : "Error"}`);
    } finally {
      setBusy(null);
    }
  }

  async function runNameAlreadyApproved() {
    setBusy("name_already_approved");
    setMsg("");
    setMsgKind("info");
    try {
      const res = await fetch(`/api/register/${registrationId}/name-already-approved`, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
      });
      const data = await res.json();
      if (!res.ok || !data.ok) {
        setMsgKind("error");
        setMsg(`❌ ${data.error || "Failed to process."}`);
      } else if (data.decision === "approved") {
        setMsgKind("success");
        setMsg(`✅ Name approved! Documents saved to PB. Reloading…`);
        setTimeout(() => window.location.reload(), 3000);
      } else if (data.decision === "rejected") {
        setMsgKind("warn");
        setMsg(`⚠ Name rejected by CIPC. Client needs to propose new names.`);
      } else {
        setMsgKind("info");
        setMsg(data.message || "Done.");
      }
    } catch (err: unknown) {
      setMsgKind("error");
      setMsg(`❌ ${err instanceof Error ? err.message : "Error"}`);
    } finally {
      setBusy(null);
    }
  }

  const isRegistered = status === "registered";
  const isBizportalInProgress = status === "bizportal_in_progress";
  const isBizportalDone = status === "bizportal_done";

  return (
    <div className="bg-surface border border-border rounded-lg p-5">
      <p className="text-xs uppercase tracking-[0.08em] text-muted font-bold mb-3">Step 2 actions</p>
      <div className="flex flex-wrap items-center gap-3">
        {isRegistered && (
          <>
            <button
              onClick={handleApplyClick}
              disabled={busy === "apply"}
              className="px-4 py-2 rounded-md border border-accent/30 bg-accent/10 text-accent text-sm font-bold hover:bg-accent/20 disabled:opacity-50 transition-colors"
            >
              {busy === "apply" ? "⏳ Running BizPortal…" : "🌐 Apply Name Reservation on BizPortal"}
            </button>
            <button
              onClick={handleNameOnlyClick}
              disabled={busy === "apply_name_only"}
              className="px-4 py-2 rounded-md border border-purple-500/30 bg-purple-500/10 text-purple-700 text-sm font-bold hover:bg-purple-500/20 disabled:opacity-50 transition-colors"
              title="Apply only for a CIPC name reservation — workflow ends once CIPC approves. No follow-up Steps 3/4."
            >
              {busy === "apply_name_only" ? "⏳ Running…" : "🪪 Name Reservation Only"}
            </button>
            <button
              onClick={runNameAlreadyApproved}
              disabled={busy === "name_already_approved"}
              className="px-4 py-2 rounded-md border border-green-500/30 bg-green-500/10 text-green-700 text-sm font-bold hover:bg-green-500/20 disabled:opacity-50 transition-colors"
              title="Name was already approved on BizPortal by the company secretary — search DeltaDet for existing CIPC emails and complete the workflow"
            >
              {busy === "name_already_approved" ? "⏳ Searching emails…" : "✅ Name Already Approved"}
            </button>
            <button
              onClick={() => runAction("back_to_step1")}
              disabled={busy === "back_to_step1"}
              className="px-4 py-2 rounded-md border border-yellow-500/30 bg-yellow-500/10 text-yellow-700 text-sm font-semibold hover:bg-yellow-500/20 disabled:opacity-50 transition-colors"
            >
              {busy === "back_to_step1" ? "…" : "← Back to Step 1"}
            </button>
            <button
              disabled
              title="Coming soon"
              className="px-4 py-2 rounded-md border border-border bg-surface-warm text-muted text-sm font-semibold cursor-not-allowed opacity-60"
            >
              Step 3: Resignation →
            </button>
          </>
        )}
        {isBizportalInProgress && (
          <>
            <span className="px-3 py-2 rounded-md border border-blue-500/30 bg-blue-500/10 text-blue-700 text-sm font-semibold">
              ⏳ Bizportal submission in progress
            </span>
            <button
              onClick={runCheckMail}
              disabled={busy === "check_mail"}
              className="px-4 py-2 rounded-md border border-amber-500/30 bg-amber-500/10 text-amber-700 text-sm font-bold hover:bg-amber-500/20 disabled:opacity-50 transition-colors"
              title="Check deltadet mailbox for new CIPC emails now"
            >
              {busy === "check_mail" ? "⏳ Checking mail…" : "📧 Check Mail"}
            </button>
            <button
              onClick={() => setShowRevertConfirm(true)}
              disabled={busy === "revert_new_names"}
              className="px-4 py-2 rounded-md border border-red-500/30 bg-red-500/10 text-red-700 text-sm font-bold hover:bg-red-500/20 disabled:opacity-50 transition-colors"
              title="CIPC rejected the name — revert to Step 1 so client can submit 4 new proposed names"
            >
              {busy === "revert_new_names" ? "⏳ Reverting…" : "🔄 Revert to Step 1 (New Names)"}
            </button>
          </>
        )}
        {isBizportalDone && (
          <>
            <span className="px-3 py-2 rounded-md border border-success/30 bg-success/10 text-success text-sm font-bold">
              ✓ BizPortal Done — awaiting approval letter
            </span>
            <button
              onClick={runCheckMail}
              disabled={busy === "check_mail"}
              className="px-4 py-2 rounded-md border border-amber-500/30 bg-amber-500/10 text-amber-700 text-sm font-bold hover:bg-amber-500/20 disabled:opacity-50 transition-colors"
              title="Check deltadet mailbox for CIPC decision email now"
            >
              {busy === "check_mail" ? "⏳ Checking mail…" : "📧 Check Mail"}
            </button>
            <button
              onClick={() => runAction("client_requested_changes", "Client wants to change something — move back to step 1?")}
              disabled={busy === "client_requested_changes"}
              className="px-4 py-2 rounded-md border border-yellow-500/30 bg-yellow-500/10 text-yellow-700 text-sm font-semibold hover:bg-yellow-500/20 disabled:opacity-50 transition-colors"
            >
              ← Client Requested Changes
            </button>
            <button
              onClick={() => setShowRevertConfirm(true)}
              disabled={busy === "revert_new_names"}
              className="px-4 py-2 rounded-md border border-red-500/30 bg-red-500/10 text-red-700 text-sm font-bold hover:bg-red-500/20 disabled:opacity-50 transition-colors"
              title="CIPC rejected the name — revert to Step 1 so client can submit 4 new proposed names"
            >
              {busy === "revert_new_names" ? "⏳ Reverting…" : "🔄 Revert to Step 1 (New Names)"}
            </button>
          </>
        )}
        {status === "name_approved" && (
          <>
            <span className="px-3 py-2 rounded-md border border-success/30 bg-success/10 text-success text-sm font-bold">
              ✓ Name approved by Bizportal
            </span>
            <button
              onClick={() => runAction("step3")}
              disabled={busy === "step3"}
              className="px-4 py-2 rounded-md border border-purple-500/30 bg-purple-500/10 text-purple-700 text-sm font-bold hover:bg-purple-500/20 disabled:opacity-50 transition-colors"
            >
              {busy === "step3" ? "⏳ Moving…" : "➡️ Proceed to Step 3"}
            </button>
            <button
              onClick={() => setShowRevertConfirm(true)}
              disabled={busy === "revert_new_names"}
              className="px-4 py-2 rounded-md border border-red-500/30 bg-red-500/10 text-red-700 text-sm font-bold hover:bg-red-500/20 disabled:opacity-50 transition-colors"
              title="Name was approved but client wants different names — revert to Step 1 for new proposals"
            >
              {busy === "revert_new_names" ? "⏳ Reverting…" : "🔄 Revert to Step 1 (New Names)"}
            </button>
          </>
        )}
        {status === "name_reserved" && (
          <span className="px-3 py-2 rounded-md border border-purple-500/30 bg-purple-500/10 text-purple-700 text-sm font-bold">
            ✓ Name reserved — workflow complete
          </span>
        )}
        {status === "cancelled" && (
          <span className="px-4 py-2 rounded-md border border-danger/30 bg-danger/10 text-danger text-sm font-semibold">
            ⚠ Cancelled
          </span>
        )}
        <Link
          href="/registrations"
          className="px-4 py-2 rounded-md border border-border bg-surface text-fg text-sm font-semibold no-underline hover:bg-surface-warm transition-colors"
        >
          ← Back to list
        </Link>
      </div>

      {msg && (
        <div className={`mt-3 px-4 py-3 rounded-md text-sm border ${
          msgKind === "success" ? "bg-success/10 border-success/30 text-success" :
          msgKind === "warn" ? "bg-yellow-500/10 border-yellow-500/30 text-yellow-700" :
          msgKind === "error" ? "bg-danger/10 border-danger/30 text-danger" :
          "bg-surface-warm border-border text-fg"
        }`}>
          {msg}
        </div>
      )}

      {bizportalResult && (
        <div className="mt-3 px-4 py-3 rounded-md text-sm bg-surface-warm border border-border">
          <p className="font-semibold mb-2">BizPortal flow details</p>
          {bizportalResult.balance_before !== null && bizportalResult.balance_before !== undefined && (
            <p className="text-xs text-muted">Balance before: <span className="font-mono text-fg">R {bizportalResult.balance_before.toFixed(2)}</span></p>
          )}
          {bizportalResult.balance_after !== null && bizportalResult.balance_after !== undefined && (
            <p className="text-xs text-muted">Balance after: <span className="font-mono text-fg">R {bizportalResult.balance_after.toFixed(2)}</span></p>
          )}
          {bizportalResult.deduction !== null && bizportalResult.deduction !== undefined && (
            <p className="text-xs text-muted">Deduction: <span className="font-mono text-fg">R {bizportalResult.deduction.toFixed(2)}</span></p>
          )}
          {bizportalResult.log && (
            <details className="mt-2">
              <summary className="text-xs text-muted cursor-pointer">Show log</summary>
              <pre className="text-[10px] text-muted mt-2 whitespace-pre-wrap font-mono">
                {bizportalResult.log.join("\n")}
              </pre>
            </details>
          )}
        </div>
      )}

      {checkMailResult && (
        <div className="mt-3 px-4 py-3 rounded-md text-sm bg-surface-warm border border-border">
          <p className="font-semibold mb-2">📧 Check Mail result</p>
          <p className="text-xs text-muted mb-1">
            Reference: <span className="font-mono text-fg">{checkMailResult.registration?.reference_name}</span>
            {" | "}
            Status: <span className="font-mono text-fg">{checkMailResult.registration?.status_after || checkMailResult.registration?.status_before}</span>
          </p>
          {checkMailResult.registration?.cipc_reference_no && (
            <p className="text-xs text-muted">
              CIPC Ref: <span className="font-mono text-fg">{checkMailResult.registration.cipc_reference_no}</span>
            </p>
          )}
          {checkMailResult.registration?.cipc_decision && (
            <p className="text-xs text-muted">
              Decision: <span className="font-mono text-fg">{checkMailResult.registration.cipc_decision}</span>
            </p>
          )}
          {checkMailResult.firstScanner?.found && (
            <p className="text-xs text-amber-700 mt-1">✓ First email found and processed</p>
          )}
          {checkMailResult.secondScanner?.found && (
            <p className="text-xs text-amber-700 mt-1">✓ Second email found — client notified</p>
          )}
          {!checkMailResult.firstScanner?.found && !checkMailResult.secondScanner?.found && (
            <p className="text-xs text-muted mt-1">No new emails found for this registration.</p>
          )}
        </div>
      )}

      {/* Confirmation popup */}
      {showConfirm && (
        <div
          className="fixed inset-0 bg-black/40 flex items-center justify-center z-50 p-4"
          onClick={() => setShowConfirm(false)}
        >
          <div
            className="bg-surface border border-border rounded-lg p-6 max-w-md w-full shadow-xl"
            onClick={(e) => e.stopPropagation()}
          >
            <p className="text-xs uppercase tracking-[0.08em] text-accent font-bold mb-2">Apply Name Reservation</p>
            <h3 className="text-lg font-bold text-fg mb-3">Apply on BizPortal?</h3>
            <p className="text-sm text-muted mb-4">
              I will open BizPortal, login if needed, fill the 4 name boxes in the order supplied, and click Continue twice.
              The second Continue <strong>costs R50</strong> from your BizPortal balance.
            </p>
            <p className="text-sm text-danger font-semibold mb-5">
              ⚠ Before this runs I'll record your BizPortal balance, after the run I'll check it again. If R50 was deducted, I'll auto-mark <strong>BizPortal Done</strong> (green) so you know to wait for the approval letter.
            </p>
            <p className="text-sm text-fg mb-1 font-semibold">Names to enter:</p>
            <ol className="text-sm text-fg list-decimal list-inside mb-5 space-y-1">
              {proposedNames.length === 0 && <li className="text-muted italic">No names provided</li>}
              {proposedNames.map((n, i) => (
                <li key={i} className="font-mono">{n}</li>
              ))}
            </ol>
            <div className="flex justify-end gap-3">
              <button
                onClick={() => setShowConfirm(false)}
                className="px-4 py-2 rounded-md border border-border bg-surface text-fg text-sm font-semibold hover:bg-surface-warm transition-colors"
              >
                Cancel
              </button>
              <button
                onClick={() => runBizportalApply(false)}
                disabled={busy === "apply"}
                className="px-4 py-2 rounded-md border border-accent bg-accent text-accent-on text-sm font-bold hover:opacity-90 transition-opacity disabled:opacity-50"
              >
                {busy === "apply" ? "Running…" : "OK"}
              </button>
            </div>
          </div>
        </div>
      )}

      {/* Name Reservation Only confirmation popup */}
      {showNameOnlyConfirm && (
        <div
          className="fixed inset-0 bg-black/40 flex items-center justify-center z-50 p-4"
          onClick={() => setShowNameOnlyConfirm(false)}
        >
          <div
            className="bg-surface border border-border rounded-lg p-6 max-w-md w-full shadow-xl"
            onClick={(e) => e.stopPropagation()}
          >
            <p className="text-xs uppercase tracking-[0.08em] text-purple-700 font-bold mb-2">Name Reservation Only</p>
            <h3 className="text-lg font-bold text-fg mb-3">Apply just for the name reservation?</h3>
            <p className="text-sm text-muted mb-4">
              I will lodge a CIPC Name Reservation on BizPortal — <strong>R50</strong> is debited from your prepaid balance.
              Once CIPC approves, this registration is <strong>done</strong>. No Steps 3/4.
            </p>
            <p className="text-sm text-fg mb-1 font-semibold">Names to enter:</p>
            <ol className="text-sm text-fg list-decimal list-inside mb-5 space-y-1">
              {proposedNames.length === 0 && <li className="text-muted italic">No names provided</li>}
              {proposedNames.map((n, i) => (
                <li key={i} className="font-mono">{n}</li>
              ))}
            </ol>
            <div className="flex justify-end gap-3">
              <button
                onClick={() => setShowNameOnlyConfirm(false)}
                className="px-4 py-2 rounded-md border border-border bg-surface text-fg text-sm font-semibold hover:bg-surface-warm transition-colors"
              >
                Cancel
              </button>
              <button
                onClick={() => runBizportalApply(true)}
                disabled={busy === "apply_name_only"}
                className="px-4 py-2 rounded-md border border-purple-500 bg-purple-500 text-white text-sm font-bold hover:opacity-90 transition-opacity disabled:opacity-50"
              >
                {busy === "apply_name_only" ? "Running…" : "OK — Name Reservation Only"}
              </button>
            </div>
          </div>
        </div>
      )}
      {/* Revert to Step 1 (New Names) confirmation popup */}
      {showRevertConfirm && (
        <div
          className="fixed inset-0 bg-black/40 flex items-center justify-center z-50 p-4"
          onClick={() => setShowRevertConfirm(false)}
        >
          <div
            className="bg-surface border border-border rounded-lg p-6 max-w-md w-full shadow-xl"
            onClick={(e) => e.stopPropagation()}
          >
            <p className="text-xs uppercase tracking-[0.08em] text-red-700 font-bold mb-2">CIPC Name Rejected</p>
            <h3 className="text-lg font-bold text-fg mb-3">Revert to Step 1 — New Names?</h3>
            <p className="text-sm text-muted mb-4">
              This will <strong>clear the CIPC reference number and decision</strong>, and move the registration back to Step 1.
            </p>
            <p className="text-sm text-muted mb-1">
              The client will receive the wizard link with their saved data and can submit <strong>4 new proposed names</strong>.
            </p>
            <p className="text-sm text-red-700 font-semibold mb-5">
              This cannot be undone.
            </p>
            <div className="flex justify-end gap-3">
              <button
                onClick={() => setShowRevertConfirm(false)}
                className="px-4 py-2 rounded-md border border-border bg-surface text-fg text-sm font-semibold hover:bg-surface-warm transition-colors"
              >
                Cancel
              </button>
              <button
                onClick={runRevertNewNames}
                disabled={busy === "revert_new_names"}
                className="px-4 py-2 rounded-md border border-red-500 bg-red-500 text-white text-sm font-bold hover:opacity-90 transition-opacity disabled:opacity-50"
              >
                {busy === "revert_new_names" ? "Reverting…" : "Revert to Step 1"}
              </button>
            </div>
          </div>
        </div>
      )}
    </div>
  );
}