import { useQuery } from "@tanstack/react-query";
import {
  environmentsAtom,
  type Folder,
  type GrpcRequest,
  type HttpRequest,
  httpResponsesAtom,
  pluginsAtom,
  type WebsocketRequest,
  type Workspace,
} from "@yaakapp-internal/models";
import type { GetTemplateFunctionConfigResponse, JsonPrimitive } from "@yaakapp-internal/plugins";
import { useAtomValue } from "jotai";
import { md5 } from "js-md5";
import { invokeCmd } from "../lib/tauri";
import { activeEnvironmentIdAtom } from "./useActiveEnvironment";
import { activeWorkspaceIdAtom } from "./useActiveWorkspace";

export function useTemplateFunctionConfig(
  functionName: string | null,
  values: Record<string, JsonPrimitive>,
  model: HttpRequest | GrpcRequest | WebsocketRequest | Folder | Workspace,
) {
  const pluginsKey = useAtomValue(pluginsAtom);
  const workspaceId = useAtomValue(activeWorkspaceIdAtom);
  const environmentId = useAtomValue(activeEnvironmentIdAtom);
  const responses = useAtomValue(httpResponsesAtom);
  const environments = useAtomValue(environmentsAtom);
  const environmentsKey = environments.map((e) => e.id + e.updatedAt).join(":");

  // Some auth handlers like OAuth 2.0 show the current token after a successful request. To
  // handle that, we'll force the auth to re-fetch after each new response closes
  const responseKey = md5(
    responses
      .filter((r) => r.state === "closed")
      .map((r) => r.id)
      .join(":"),
  );

  return useQuery({
    queryKey: [
      "template_function_config",
      model,
      functionName,
      values,
      workspaceId, // Refresh when the active workspace changes
      environmentId, // Refresh when the active environment changes
      environmentsKey, // Refresh when environments change
      responseKey, // Refresh when responses change
      pluginsKey, // Refresh when plugins reload
    ],
    placeholderData: (prev) => prev, // Keep previous data on refetch
    queryFn: async () => {
      if (functionName == null) return null;
      return getTemplateFunctionConfig(functionName, values, model, environmentId);
    },
  });
}

export async function getTemplateFunctionConfig(
  functionName: string,
  values: Record<string, JsonPrimitive>,
  model: HttpRequest | GrpcRequest | WebsocketRequest | Folder | Workspace,
  environmentId: string | undefined,
) {
  const config = await invokeCmd<GetTemplateFunctionConfigResponse>(
    "cmd_template_function_config",
    {
      functionName,
      values,
      model,
      environmentId,
    },
  );
  return config.function;
}