import { useMemo, useState } from "react";
import {
  faBan,
  faCertificate,
  faEllipsis,
  faEye,
  faFileExport,
  faTrash
} from "@fortawesome/free-solid-svg-icons";
import { FontAwesomeIcon } from "@fortawesome/react-fontawesome";
import { format } from "date-fns";
import { twMerge } from "tailwind-merge";

import { ProjectPermissionCan } from "@app/components/permissions";
import {
  Badge,
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuItem,
  DropdownMenuTrigger,
  EmptyState,
  Pagination,
  Table,
  TableContainer,
  TableSkeleton,
  TBody,
  Td,
  Th,
  THead,
  Tooltip,
  Tr
} from "@app/components/v2";
import {
  ProjectPermissionCertificateActions,
  ProjectPermissionSub,
  useProject
} from "@app/context";
import { useListWorkspaceCertificates } from "@app/hooks/api";
import { caSupportsCapability } from "@app/hooks/api/ca/constants";
import { CaCapability, CaType } from "@app/hooks/api/ca/enums";
import { useListCasByProjectId } from "@app/hooks/api/ca/queries";
import { CertStatus } from "@app/hooks/api/certificates/enums";
import { UsePopUpState } from "@app/hooks/usePopUp";

import { getCertValidUntilBadgeDetails } from "./CertificatesTable.utils";

type Props = {
  handlePopUpOpen: (
    popUpName: keyof UsePopUpState<
      ["certificate", "deleteCertificate", "revokeCertificate", "certificateCert"]
    >,
    data?: {
      serialNumber?: string;
      commonName?: string;
    }
  ) => void;
};

const PER_PAGE_INIT = 25;

export const CertificatesTable = ({ handlePopUpOpen }: Props) => {
  const [page, setPage] = useState(1);
  const [perPage, setPerPage] = useState(PER_PAGE_INIT);

  const { currentProject } = useProject();
  const { data, isPending } = useListWorkspaceCertificates({
    projectId: currentProject?.slug ?? "",
    offset: (page - 1) * perPage,
    limit: perPage
  });

  // Fetch CA data to determine capabilities
  const { data: caData } = useListCasByProjectId(currentProject?.id ?? "");

  // Create mapping from caId to CA type for capability checking
  const caCapabilityMap = useMemo(() => {
    if (!caData) return {};

    const map: Record<string, CaType> = {};
    caData.forEach((ca) => {
      map[ca.id] = ca.type;
    });
    return map;
  }, [caData]);

  return (
    <TableContainer>
      <Table>
        <THead>
          <Tr>
            <Th>Common Name</Th>
            <Th>Status</Th>
            <Th>Not Before</Th>
            <Th>Not After</Th>
            <Th />
          </Tr>
        </THead>
        <TBody>
          {isPending && <TableSkeleton columns={3} innerKey="project-cas" />}
          {!isPending &&
            data?.certificates.map((certificate) => {
              const { variant, label } = getCertValidUntilBadgeDetails(certificate.notAfter);
              return (
                <Tr className="h-10" key={`certificate-${certificate.id}`}>
                  <Td>{certificate.commonName}</Td>
                  <Td>
                    {certificate.status === CertStatus.REVOKED ? (
                      <Badge variant="danger">Revoked</Badge>
                    ) : (
                      <Badge variant={variant}>{label}</Badge>
                    )}
                  </Td>
                  <Td>
                    {certificate.notBefore
                      ? format(new Date(certificate.notBefore), "yyyy-MM-dd")
                      : "-"}
                  </Td>
                  <Td>
                    {certificate.notAfter
                      ? format(new Date(certificate.notAfter), "yyyy-MM-dd")
                      : "-"}
                  </Td>
                  <Td className="flex justify-end">
                    <DropdownMenu>
                      <DropdownMenuTrigger asChild className="rounded-lg">
                        <div className="hover:text-primary-400 data-[state=open]:text-primary-400">
                          <Tooltip content="More options">
                            <FontAwesomeIcon size="lg" icon={faEllipsis} />
                          </Tooltip>
                        </div>
                      </DropdownMenuTrigger>
                      <DropdownMenuContent align="start" className="p-1">
                        <ProjectPermissionCan
                          I={ProjectPermissionCertificateActions.Read}
                          a={ProjectPermissionSub.Certificates}
                        >
                          {(isAllowed) => (
                            <DropdownMenuItem
                              className={twMerge(
                                !isAllowed && "pointer-events-none cursor-not-allowed opacity-50"
                              )}
                              onClick={async () =>
                                handlePopUpOpen("certificateCert", {
                                  serialNumber: certificate.serialNumber
                                })
                              }
                              disabled={!isAllowed}
                              icon={<FontAwesomeIcon icon={faFileExport} />}
                            >
                              Export Certificate
                            </DropdownMenuItem>
                          )}
                        </ProjectPermissionCan>
                        <ProjectPermissionCan
                          I={ProjectPermissionCertificateActions.Read}
                          a={ProjectPermissionSub.Certificates}
                        >
                          {(isAllowed) => (
                            <DropdownMenuItem
                              className={twMerge(
                                !isAllowed && "pointer-events-none cursor-not-allowed opacity-50"
                              )}
                              onClick={async () =>
                                handlePopUpOpen("certificate", {
                                  serialNumber: certificate.serialNumber
                                })
                              }
                              disabled={!isAllowed}
                              icon={<FontAwesomeIcon icon={faEye} />}
                            >
                              View Details
                            </DropdownMenuItem>
                          )}
                        </ProjectPermissionCan>
                        {/* Only show revoke button if CA supports revocation */}
                        {(() => {
                          const caType = caCapabilityMap[certificate.caId];
                          // If caId not found in map, assume CA supports revocation to avoid hiding revoke option
                          const supportsRevocation =
                            !caType ||
                            caSupportsCapability(caType, CaCapability.REVOKE_CERTIFICATES);

                          if (!supportsRevocation) {
                            return null;
                          }

                          return (
                            <ProjectPermissionCan
                              I={ProjectPermissionCertificateActions.Delete}
                              a={ProjectPermissionSub.Certificates}
                            >
                              {(isAllowed) => (
                                <DropdownMenuItem
                                  className={twMerge(
                                    !isAllowed &&
                                      "pointer-events-none cursor-not-allowed opacity-50"
                                  )}
                                  onClick={async () =>
                                    handlePopUpOpen("revokeCertificate", {
                                      serialNumber: certificate.serialNumber
                                    })
                                  }
                                  disabled={!isAllowed}
                                  icon={<FontAwesomeIcon icon={faBan} />}
                                >
                                  Revoke Certificate
                                </DropdownMenuItem>
                              )}
                            </ProjectPermissionCan>
                          );
                        })()}
                        <ProjectPermissionCan
                          I={ProjectPermissionCertificateActions.Delete}
                          a={ProjectPermissionSub.Certificates}
                        >
                          {(isAllowed) => (
                            <DropdownMenuItem
                              className={twMerge(
                                !isAllowed && "pointer-events-none cursor-not-allowed opacity-50"
                              )}
                              onClick={async () =>
                                handlePopUpOpen("deleteCertificate", {
                                  serialNumber: certificate.serialNumber,
                                  commonName: certificate.commonName
                                })
                              }
                              disabled={!isAllowed}
                              icon={<FontAwesomeIcon icon={faTrash} />}
                            >
                              Delete Certificate
                            </DropdownMenuItem>
                          )}
                        </ProjectPermissionCan>
                      </DropdownMenuContent>
                    </DropdownMenu>
                  </Td>
                </Tr>
              );
            })}
        </TBody>
      </Table>
      {!isPending && data?.totalCount !== undefined && data.totalCount >= PER_PAGE_INIT && (
        <Pagination
          count={data.totalCount}
          page={page}
          perPage={perPage}
          onChangePage={(newPage) => setPage(newPage)}
          onChangePerPage={(newPerPage) => setPerPage(newPerPage)}
        />
      )}
      {!isPending && !data?.certificates?.length && (
        <EmptyState title="No certificates have been issued" icon={faCertificate} />
      )}
    </TableContainer>
  );
};