import { useState, useEffect, useCallback, useRef } from "react";
import { useQuery, useMutation, useQueryClient } from "@tanstack/react-query";
import {
  checkDocker,
  listTuskContainers,
  cloneToDocker,
  startContainer,
  stopContainer,
  removeContainer,
  onCloneProgress,
} from "@/lib/tauri";
import type { CloneToDockerParams, CloneProgress, CloneResult } from "@/types";

export function useDockerStatus() {
  return useQuery({
    queryKey: ["docker-status"],
    queryFn: checkDocker,
    staleTime: 30_000,
  });
}

export function useTuskContainers() {
  return useQuery({
    queryKey: ["tusk-containers"],
    queryFn: listTuskContainers,
    refetchInterval: 10_000,
  });
}

export function useCloneToDocker() {
  const [progress, setProgress] = useState<CloneProgress | null>(null);
  const cloneIdRef = useRef<string>("");
  const queryClient = useQueryClient();

  const mutation = useMutation({
    mutationFn: ({
      params,
      cloneId,
    }: {
      params: CloneToDockerParams;
      cloneId: string;
    }) => {
      cloneIdRef.current = cloneId;
      setProgress(null);
      return cloneToDocker(params, cloneId);
    },
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ["connections"] });
      queryClient.invalidateQueries({ queryKey: ["tusk-containers"] });
    },
  });

  useEffect(() => {
    let mounted = true;
    let unlisten: (() => void) | undefined;
    onCloneProgress((p) => {
      if (mounted && p.clone_id === cloneIdRef.current) {
        setProgress(p);
      }
    }).then((fn) => {
      if (mounted) {
        unlisten = fn;
      } else {
        fn();
      }
    });
    return () => {
      mounted = false;
      unlisten?.();
    };
  }, []);

  const mutationRef = useRef(mutation);
  useEffect(() => {
    mutationRef.current = mutation;
  });

  const reset = useCallback(() => {
    mutationRef.current.reset();
    setProgress(null);
    cloneIdRef.current = "";
  }, []);

  return {
    clone: mutation.mutate,
    result: mutation.data as CloneResult | undefined,
    error: mutation.error ? String(mutation.error) : null,
    isCloning: mutation.isPending,
    progress,
    reset,
  };
}

export function useStartContainer() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: (name: string) => startContainer(name),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ["tusk-containers"] });
    },
  });
}

export function useStopContainer() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: (name: string) => stopContainer(name),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ["tusk-containers"] });
    },
  });
}

export function useRemoveContainer() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: (name: string) => removeContainer(name),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: ["tusk-containers"] });
    },
  });
}