import { Button } from "@repo/shadcn-ui/components/button";
import { FormActions, FormDialog } from "@repo/shadcn-ui/components/form-dialog";
import { Input } from "@repo/shadcn-ui/components/input";
import { Label } from "@repo/shadcn-ui/components/label";
import { useMutation, useQueryClient } from "@tanstack/react-query";
import { useId, useRef } from "react";
import { useForm } from "react-hook-form";
import { useTranslation } from "react-i18next";

import type { AccessFieldsDTO, AccessItemDTO } from "../../../../common";
import { AccessFieldsSchema } from "../../../../common";
import { EntityHelp } from "../../help";
import { AccessApiError, accessApi, accessKeys } from "../../shared/api";

export type QuickCreateTarget =
  | { kind: "system" }
  | { kind: "environment"; systemId: string; systemName: string };

export function QuickCreateDialog({
  target,
  scope,
  csrfToken,
  onClose,
  onCreated,
  items,
}: {
  target: QuickCreateTarget;
  scope: string;
  csrfToken: string;
  onClose: () => void;
  onCreated: (id: string) => void;
  items: readonly AccessItemDTO[];
}) {
  const { t } = useTranslation("access");
  const id = useId();
  const client = useQueryClient();
  const dismissed = useRef(false);
  const form = useForm<{ name: string }>({ defaultValues: { name: "" } });
  const enteredName = form.watch("name").trim().toLocaleLowerCase();
  const existing = items.find((item) => {
    const values = item.values;
    return (
      "name" in values &&
      "active" in values &&
      values.active &&
      values.name.toLocaleLowerCase() === enteredName &&
      (target.kind === "system"
        ? values.kind === "system"
        : values.kind === "environment" && values.systemId === target.systemId)
    );
  });
  const mutation = useMutation({
    mutationFn: async ({ name }: { name: string }) => {
      const values = AccessFieldsSchema.parse(
        target.kind === "system"
          ? { kind: "system", name, active: true }
          : { kind: "environment", name, active: true, systemId: target.systemId }
      );
      const result = await accessApi.request(scope, values, undefined, csrfToken);
      const created = result.items.find(
        (item) =>
          item.companyId === (scope === "global" ? null : scope) && matches(item.values, values)
      );
      if (!created) {
        throw new AccessApiError("INTERNAL_ERROR");
      }
      return { result, id: created.id };
    },
    onSuccess: async ({ result, id }) => {
      await client.invalidateQueries({ queryKey: ["access"] });
      client.setQueryData(accessKeys.scope(scope), result);
      if (!dismissed.current) {
        onCreated(id);
      }
    },
  });
  return (
    <FormDialog
      cancelLabel={t("cancel")}
      formActions
      onOpenChange={(open) => {
        if (!open) {
          dismissed.current = true;
          onClose();
        }
      }}
      open
      title={t(target.kind === "system" ? "quickAddSystem" : "quickAddEnvironment")}
    >
      <form className="space-y-4" onSubmit={form.handleSubmit((values) => mutation.mutate(values))}>
        {target.kind === "environment" && (
          <p className="text-sm text-muted-foreground">
            {t("quickEnvironmentContext", { name: target.systemName })}
          </p>
        )}
        <div className="space-y-2">
          <Label htmlFor={id}>{t("name")}</Label>
          <Input
            id={id}
            maxLength={100}
            required
            {...form.register("name", { validate: (value) => value.trim().length > 0 })}
          />
          {form.formState.errors.name && (
            <p className="text-destructive" role="alert">
              {t("invalid")}
            </p>
          )}
        </div>
        {mutation.isError && (
          <p className="text-destructive" role="alert">
            {t(
              `errors.${mutation.error instanceof AccessApiError ? mutation.error.code : "INTERNAL_ERROR"}`
            )}
          </p>
        )}
        {existing && (
          <div className="space-y-2">
            <p>{t("quickExisting")}</p>
            <Button
              disabled={mutation.isPending}
              onClick={() => onCreated(existing.id)}
              type="button"
              variant="outline"
            >
              {t("quickUseExisting")}
            </Button>
          </div>
        )}
        <p className="text-sm text-muted-foreground">{t("quickCreateNotice")}</p>
        <EntityHelp kind={target.kind} scope={scope} />
        <FormActions>
          <Button disabled={mutation.isPending} type="submit">
            {t(mutation.isPending ? "saving" : "quickSaveSelect")}
          </Button>
        </FormActions>
      </form>
    </FormDialog>
  );
}

function matches(item: AccessFieldsDTO, values: AccessFieldsDTO) {
  if (values.kind === "system" && item.kind === "system") {
    return item.name === values.name;
  }
  if (values.kind === "environment" && item.kind === "environment") {
    return item.name === values.name && item.systemId === values.systemId;
  }
  return false;
}