import { useMemo, useState } from "react";
import { Controller, type Control, type FieldError } from "react-hook-form";
import { Autocomplete, TextField } from "@mui/material";
import type { AccountListItem } from "@/domain/accounts/types/account";
import { useAccountsList } from "@/domain/accounts/use-cases/use-accounts-list";
import type { LocationFormValues } from "@/domain/locations/schemas/location-schema";
import { useDebounce } from "@/hooks/use-debounce";

type ClientOption = Pick<AccountListItem, "id" | "name">;

interface ClientSelectProps {
  control: Control<LocationFormValues>;
  error?: FieldError;
  /** Stored client, shown even when it is not in the first page of search results. */
  initialClient?: ClientOption;
}

/** Searchable client (account) picker bound to `accountId`. */
export function ClientSelect({ control, error, initialClient }: ClientSelectProps) {
  const [search, setSearch] = useState("");
  const debouncedSearch = useDebounce(search, 300);
  const { data, isLoading } = useAccountsList({ search: debouncedSearch, page: 1, pageSize: 50 });

  const options = useMemo<ClientOption[]>(() => {
    const items: ClientOption[] = data?.items ?? [];
    const hasInitial =
      initialClient !== undefined &&
      items.some((item) => String(item.id) === String(initialClient.id));
    return initialClient === undefined || hasInitial ? items : [initialClient, ...items];
  }, [data?.items, initialClient]);

  return (
    <Controller
      name="accountId"
      control={control}
      render={({ field }) => (
        <Autocomplete<ClientOption>
          options={options}
          loading={isLoading}
          getOptionLabel={(option) => option.name || String(option.id)}
          isOptionEqualToValue={(option, value) => String(option.id) === String(value.id)}
          value={options.find((option) => String(option.id) === field.value) ?? null}
          onChange={(_event, option) => field.onChange(option ? String(option.id) : "")}
          onBlur={field.onBlur}
          onInputChange={(_event, value, reason) => {
            if (reason === "input") {
              setSearch(value);
            }
          }}
          renderInput={(params) => (
            <TextField
              {...params}
              label="Client"
              required
              placeholder="Search clients..."
              error={Boolean(error)}
              helperText={error?.message}
            />
          )}
        />
      )}
    />
  );
}