import { initialEditorState } from "./configurations";
import { removeFocus } from "./eval";

export const actionShortcuts: [string, string[], string][] = [
  ["call"     , ['c'], "expr ⌴"             ],
  ["transform", ['.'], "⌴ expr"             ],
  ["assign"   , ['a'], "let (⌴ = expr) in ⌴"],
  ["declare"  , ['d'], "let (⌴ = ⌴) in expr"],
  ["lambda"   , ['l'], "λ⌴. expr"           ],
];

export function getActions(globalContext, setState) {
  return {
    c: () => {
        setState(state => ({
          kind: "call",
          fn: removeFocus(state),
          input: initialEditorState,
        }));
        globalContext?.doHighlight.call();    
    },
    '.': () => {
        setState(state => ({
          kind: "call",
          fn: initialEditorState,
          input: removeFocus(state),
        }));
        globalContext?.doHighlight.transform();
    },
    a: () => {
        setState(state => ({
          kind: "let",
          name: "",
          focus: true,
          value: removeFocus(state),
          inner: removeFocus(initialEditorState),
        }));  
        globalContext?.doHighlight.assign();    
    },
    d: () => {
        setState(state => ({
          kind: "let",
          name: "",
          focus: true,
          value: removeFocus(initialEditorState),
          inner: removeFocus(state),
        }));
        globalContext?.doHighlight.declare();
    },
    l: () => {
      setState(state => ({
        kind: "lambda",
        paramName: "",
        focus: true,
        expr: removeFocus(state),
      }));
      globalContext?.doHighlight.lambda();
    },
  };
}