"use client";

import { IconCheck, IconPlus, IconSelector } from "@tabler/icons-react";
import { useTranslations } from "next-intl";
import { useRouter } from "next/navigation";
import { useState, useTransition } from "react";
import { toast } from "sonner";

import { Button } from "@/components/ui/button";
import {
  Command,
  CommandEmpty,
  CommandGroup,
  CommandInput,
  CommandItem,
  CommandList,
  CommandSeparator,
} from "@/components/ui/command";
import { Popover, PopoverContent, PopoverTrigger } from "@/components/ui/popover";
import { switchActiveOrganization } from "@/lib/actions/organization";
import { cn } from "@/lib/utils";

export type OrgSwitcherItem = {
  id: string;
  name: string;
  role: "owner" | "admin" | "member";
};

function roleLabel(role: "owner" | "admin" | "member", t: ReturnType<typeof useTranslations>) {
  switch (role) {
    case "owner":
      return t("roleOwner");
    case "admin":
      return t("roleAdmin");
    case "member":
      return t("roleMember");
  }
}

export function OrgSwitcher({
  organizations,
  activeOrganizationId,
}: {
  organizations: OrgSwitcherItem[];
  activeOrganizationId: string | null;
}) {
  const t = useTranslations("Org.switcher");
  const router = useRouter();
  const [open, setOpen] = useState(false);
  const [isPending, startTransition] = useTransition();

  const active = organizations.find((o) => o.id === activeOrganizationId);

  function handleSwitch(orgId: string) {
    if (orgId === activeOrganizationId) {
      setOpen(false);
      return;
    }
    setOpen(false);
    startTransition(async () => {
      try {
        await switchActiveOrganization({ organizationId: orgId });
        router.refresh();
      } catch {
        toast.error(t("switchFailed"));
      }
    });
  }

  return (
    <Popover open={open} onOpenChange={setOpen}>
      <PopoverTrigger asChild>
        <Button
          variant="outline"
          role="combobox"
          aria-expanded={open}
          aria-label={t("currentOrg")}
          className="w-full justify-between"
          disabled={isPending}
        >
          <span className="flex min-w-0 flex-1 items-center gap-2">
            <span className="truncate text-left">
              {isPending ? t("switching") : (active?.name ?? "—")}
            </span>
            {active && !isPending && (
              <span className="text-xs tracking-wider uppercase opacity-60">
                {roleLabel(active.role, t)}
              </span>
            )}
          </span>
          <IconSelector className="size-4 shrink-0 opacity-50" />
        </Button>
      </PopoverTrigger>
      <PopoverContent className="w-[260px] p-0" align="start">
        <Command>
          <CommandInput placeholder={t("searchPlaceholder")} />
          <CommandList>
            <CommandEmpty>{t("noResults")}</CommandEmpty>
            <CommandGroup>
              {organizations.map((org) => (
                <CommandItem key={org.id} value={org.name} onSelect={() => handleSwitch(org.id)}>
                  <IconCheck
                    className={cn(
                      "mr-2 size-4",
                      org.id === activeOrganizationId ? "opacity-100" : "opacity-0",
                    )}
                  />
                  <span className="truncate">{org.name}</span>
                  <span className="ml-auto text-xs tracking-wider uppercase opacity-60">
                    {roleLabel(org.role, t)}
                  </span>
                </CommandItem>
              ))}
            </CommandGroup>
            <CommandSeparator />
            <CommandGroup>
              <CommandItem
                onSelect={() => {
                  setOpen(false);
                  router.push("/onboarding");
                }}
              >
                <IconPlus className="mr-2 size-4" />
                {t("createNew")}
              </CommandItem>
            </CommandGroup>
          </CommandList>
        </Command>
      </PopoverContent>
    </Popover>
  );
}