import { type ReactNode, useEffect } from "react";
import { Controller, useFormContext } from "react-hook-form";
import type { ModelOption } from "@/app/api/queries/useGetModelsQuery";
import { ModelSelector } from "@/app/onboarding/_components/model-selector";
import { LabelWrapper } from "@/components/label-wrapper";

interface ModelSelectorsProps {
  languageModels?: ModelOption[];
  embeddingModels?: ModelOption[];
  isLoadingModels: boolean;
  logo: ReactNode;
  languageModelName?: string;
  embeddingModelName?: string;
}

export function ModelSelectors({
  languageModels,
  embeddingModels,
  isLoadingModels,
  logo,
  languageModelName = "llmModel",
  embeddingModelName = "embeddingModel",
}: ModelSelectorsProps) {
  const {
    control,
    watch,
    formState: { errors },
    setValue,
  } = useFormContext<Record<string, any>>();

  const llmModel = watch(languageModelName);
  const embeddingModel = watch(embeddingModelName);

  const defaultLlmModel =
    languageModels?.find((model) => model.default)?.value ||
    languageModels?.[0]?.value ||
    "";
  const defaultEmbeddingModel =
    embeddingModels?.find((model) => model.default)?.value ||
    embeddingModels?.[0]?.value ||
    "";

  useEffect(() => {
    if (defaultLlmModel && !llmModel) {
      setValue(languageModelName, defaultLlmModel, { shouldValidate: true });
    }
    if (defaultEmbeddingModel && !embeddingModel) {
      setValue(embeddingModelName, defaultEmbeddingModel, {
        shouldValidate: true,
      });
    }
  }, [
    defaultLlmModel,
    defaultEmbeddingModel,
    llmModel,
    embeddingModel,
    setValue,
    languageModelName,
    embeddingModelName,
  ]);

  return (
    <>
      {embeddingModels !== undefined && (
        <div className="space-y-2">
          <LabelWrapper
            label="Embedding model"
            helperText="Model used for knowledge ingest and retrieval"
            id="embedding-model"
            required={true}
          >
            <Controller
              control={control}
              name={embeddingModelName}
              rules={{ required: "Embedding model is required" }}
              render={({ field }) => (
                <ModelSelector
                  options={embeddingModels}
                  icon={logo}
                  noOptionsPlaceholder={
                    isLoadingModels
                      ? "Loading models..."
                      : "No embedding models detected"
                  }
                  placeholder="Select an embedding model"
                  value={field.value}
                  onValueChange={field.onChange}
                />
              )}
            />
          </LabelWrapper>
          {embeddingModels.length > 0 && errors[embeddingModelName] && (
            <p className="text-sm text-destructive">
              {errors[embeddingModelName]?.message as string}
            </p>
          )}
        </div>
      )}
      {languageModels !== undefined && (
        <div className="space-y-2">
          <LabelWrapper
            label="Language model"
            helperText="Model used for chat"
            id="language-model"
            required={true}
          >
            <Controller
              control={control}
              name={languageModelName}
              rules={{ required: "Language model is required" }}
              render={({ field }) => (
                <ModelSelector
                  options={languageModels}
                  icon={logo}
                  noOptionsPlaceholder={
                    isLoadingModels
                      ? "Loading models..."
                      : "No language models detected"
                  }
                  placeholder="Select a language model"
                  value={field.value}
                  onValueChange={field.onChange}
                />
              )}
            />
          </LabelWrapper>
          {languageModels.length > 0 && errors[languageModelName] && (
            <p className="text-sm text-destructive">
              {errors[languageModelName]?.message as string}
            </p>
          )}
        </div>
      )}
    </>
  );
}