import React, { useState, createContext, useEffect } from "react";
import Sidebar from "../components/sidebar";
import ControlPanel from "../components/control_panel";
import { DndProvider } from "react-dnd";
import { HTML5Backend } from "react-dnd-html5-backend";
import Canvas from "../components/canvas";
import EditorPanel from "../components/editor_panel";
import { Tab } from "../data/data";

export const LayoutContext = createContext();
export const TableContext = createContext();
export const AreaContext = createContext();
export const TabContext = createContext();

export default function Editor(props) {
  const [code, setCode] = useState("");
  const [tables, setTables] = useState([]);
  const [relationships, setRelationships] = useState([]);
  const [areas, setAreas] = useState([]);
  const [resize, setResize] = useState(false);
  const [width, setWidth] = useState(340);
  const [selectedTable, setSelectedTable] = useState("");
  const [tab, setTab] = useState(Tab.tables);
  const [layout, setLayout] = useState({
    header: true,
    sidebar: true,
    services: true,
    tables: true,
    areas: true,
    relationships: true,
    issues: true,
    editor: true,
    shapes: true,
    fullscreen: false,
  });

  const dragHandler = (e) => {
    if (!resize) return;
    const w = e.clientX;
    if (w > 340) setWidth(w);
  };

  useEffect(() => {
    document.title = "Editor";
  }, []);

  return (
    <LayoutContext.Provider value={{ layout, setLayout }}>
      <TableContext.Provider
        value={{ tables, setTables, relationships, setRelationships }}
      >
        <AreaContext.Provider value={{ areas, setAreas }}>
          <TabContext.Provider value={{ tab, setTab }}>
            <div className="h-[100vh] overflow-hidden">
              <ControlPanel />
              <div
                className={
                  layout.header
                    ? `flex h-[calc(100vh-123.93px)]`
                    : `flex h-[calc(100vh-51.97px)]`
                }
                onMouseUp={() => setResize(false)}
                onMouseMove={dragHandler}
              >
                <DndProvider backend={HTML5Backend}>
                  {layout.sidebar && (
                    <EditorPanel
                      code={code}
                      setCode={setCode}
                      resize={resize}
                      setResize={setResize}
                      width={width}
                      selectedTable={selectedTable}
                      setSelectedTable={setSelectedTable}
                    />
                  )}
                  <Canvas
                    code={code}
                    setCode={setCode}
                    selectedTable={selectedTable}
                    setSelectedTable={setSelectedTable}
                  />
                </DndProvider>
                {layout.services && <Sidebar />}
              </div>
            </div>
          </TabContext.Provider>
        </AreaContext.Provider>
      </TableContext.Provider>
    </LayoutContext.Provider>
  );
}