import { useState } from "preact/hooks";
import type { ConfirmAction } from "./LeaseApprovalConfirmDialog.tsx";
import LeaseApprovalConfirmDialog from "./LeaseApprovalConfirmDialog.tsx";

export interface PendingApprovalItem {
  id: string;
  property?: {
    title?: string | null;
    address_1?: string | null;
    city?: string | null;
    state?: string | null;
    zip?: string | null;
    monthly_rent?: number | null;
    bedrooms?: number | null;
    bathrooms?: number | null;
  } | null;
  property_address?: string | null;
  tenant?: { name?: string | null; email?: string | null } | null;
  approval_requested_at?: number | null;
}

interface LandlordPendingApprovalsProps {
  approvals: PendingApprovalItem[];
}

function formatAddress(prop: PendingApprovalItem["property"]): string | null {
  if (!prop) return null;
  const parts = [
    prop.address_1,
    [prop.city, prop.state].filter(Boolean).join(", "),
    prop.zip,
  ].filter(Boolean);
  return parts.length > 0 ? parts.join(", ") : null;
}

function formatRentBeds(prop: PendingApprovalItem["property"]): string | null {
  if (!prop) return null;
  const hasRent = prop.monthly_rent != null;
  const hasBeds = prop.bedrooms != null || prop.bathrooms != null;
  if (!hasRent && !hasBeds) return null;
  const rent = hasRent
    ? `$${Number(prop.monthly_rent).toLocaleString()}/mo`
    : null;
  const beds = hasBeds
    ? `${prop.bedrooms ?? "—"} bed, ${prop.bathrooms ?? "—"} bath`
    : null;
  return [rent, beds].filter(Boolean).join(" · ");
}

export default function LandlordPendingApprovals({
  approvals,
}: LandlordPendingApprovalsProps) {
  const [confirmState, setConfirmState] = useState<
    {
      action: ConfirmAction;
      leaseId: string;
    } | null
  >(null);
  const [submitting, setSubmitting] = useState(false);

  const handleApproveClick = (e: Event, leaseId: string) => {
    e.preventDefault();
    setConfirmState({ action: "approve", leaseId });
  };

  const handleRejectClick = (e: Event, leaseId: string) => {
    e.preventDefault();
    setConfirmState({ action: "reject", leaseId });
  };

  const handleConfirm = async () => {
    if (!confirmState) return;
    setSubmitting(true);
    const url = confirmState.action === "approve"
      ? "/api/lease/approve"
      : "/api/lease/reject";
    const body = confirmState.action === "reject"
      ? { lease_id: confirmState.leaseId, rejection_reason: "" }
      : { lease_id: confirmState.leaseId };
    try {
      const res = await fetch(url, {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify(body),
      });
      if (res.redirected) {
        window.location.href = res.url;
        return;
      }
      if (res.ok) {
        window.location.reload();
        return;
      }
    } finally {
      setSubmitting(false);
      setConfirmState(null);
    }
  };

  const handleCancel = () => {
    if (!submitting) setConfirmState(null);
  };

  return (
    <>
      <div class="dashboard-card dashboard-card--no-overflow">
        <div class="dashboard-card-body">
          <div class="dashboard-section-header">
            <h3 class="dashboard-section-title">
              Pending Lease Approvals
            </h3>
            <a href="/landlord/approvals" class="dashboard-section-link">
              View all
            </a>
          </div>
          <div class="dashboard-list-spaced">
            {approvals && approvals.length > 0
              ? (
                approvals.slice(0, 3).map((approval) => {
                  const prop = approval.property;
                  const addressLine = formatAddress(prop);
                  const rentBeds = formatRentBeds(prop);
                  return (
                    <div
                      key={approval.id}
                      class="dashboard-row dashboard-row--blue"
                    >
                      <div class="dashboard-approval-details">
                        <p class="dashboard-row-label">
                          {prop?.title || approval.property_address ||
                            "Property"}
                        </p>
                        {addressLine && (
                          <p class="dashboard-row-muted">{addressLine}</p>
                        )}
                        {rentBeds && (
                          <p class="dashboard-row-meta">{rentBeds}</p>
                        )}
                        <p class="dashboard-row-muted">
                          Tenant: {approval.tenant?.name ||
                            approval.tenant?.email || "Unknown"}
                        </p>
                        <p class="dashboard-row-meta">
                          Requested {approval.approval_requested_at
                            ? new Date(
                              approval.approval_requested_at as number,
                            )
                              .toLocaleDateString()
                            : "Unknown date"}
                        </p>
                      </div>
                      <div class="dashboard-actions-inline">
                        <form
                          method="POST"
                          action="/api/lease/approve"
                          onSubmit={(e) => {
                            e.preventDefault();
                            handleApproveClick(e, approval.id);
                          }}
                        >
                          <input
                            type="hidden"
                            name="lease_id"
                            value={approval.id}
                          />
                          <button
                            type="submit"
                            class="dashboard-badge dashboard-badge--green"
                            disabled={submitting}
                          >
                            Approve
                          </button>
                        </form>
                        <form
                          method="POST"
                          action="/api/lease/reject"
                          onSubmit={(e) => {
                            e.preventDefault();
                            handleRejectClick(e, approval.id);
                          }}
                        >
                          <input
                            type="hidden"
                            name="lease_id"
                            value={approval.id}
                          />
                          <button
                            type="submit"
                            class="dashboard-badge dashboard-badge--red"
                            disabled={submitting}
                          >
                            Reject
                          </button>
                        </form>
                      </div>
                    </div>
                  );
                })
              )
              : (
                <div class="dashboard-empty">
                  <p class="dashboard-empty-text">
                    No pending lease approvals
                  </p>
                </div>
              )}
          </div>
        </div>
      </div>

      <LeaseApprovalConfirmDialog
        open={confirmState !== null}
        action={confirmState?.action ?? "approve"}
        leaseId={confirmState?.leaseId ?? ""}
        onConfirm={handleConfirm}
        onCancel={handleCancel}
      />
    </>
  );
}