import { useEffect, useCallback } from "react";
import { useStore } from "../state/store.tsx";
import {
  setProjects,
  setLoading,
  setError,
  setMessage,
} from "../state/actions.ts";
import { scanAllDirectories, sortProjects } from "../scanner/index.ts";
import type { GitforestConfig } from "../types/index.ts";
import { errorToString } from "../utils/errors.ts";

export function useProjects(config: GitforestConfig) {
  const { state, dispatch } = useStore();
  const { sortBy, sortDirection } = state;

  const loadProjects = useCallback(async () => {
    dispatch(setLoading(true));
    dispatch(setError(null));

    try {
      const projects = await scanAllDirectories(config);
      const sorted = sortProjects(projects, sortBy, sortDirection);
      dispatch(setProjects(sorted));
      dispatch(setMessage(`Found ${projects.length} projects`));
    } catch (error) {
      dispatch(setError(errorToString(error)));
    } finally {
      dispatch(setLoading(false));
    }
  }, [config, dispatch, sortBy, sortDirection]);

  // Load on mount
  useEffect(() => {
    loadProjects();
  }, []);

  // Re-sort when sort changes
  useEffect(() => {
    if (state.projects.length > 0 && !state.isLoading) {
      const sorted = sortProjects(state.projects, sortBy, sortDirection);
      dispatch(setProjects(sorted));
    }
  }, [sortBy, sortDirection]);

  return { loadProjects };
}