import {parser} from "./syntax.grammar"
import {LRLanguage, LanguageSupport, indentNodeProp, foldNodeProp, foldInside, delimitedIndent} from "@codemirror/language"
import {styleTags, tags as t} from "@lezer/highlight"

export const tabloidLanguage = LRLanguage.define({
  parser: parser.configure({
    props: [
      indentNodeProp.add({
        Block: delimitedIndent({closing: "endOfStory", align: false}),
        ParenBlock: delimitedIndent({closing: ")", align: false}),
        FunctionDecl: context => context.baseIndent + context.unit,
        IfStatement: context => context.baseIndent + context.unit,
      }),
      foldNodeProp.add({
        Block: foldInside,
        ParenBlock: foldInside,
      }),
      styleTags({
        Identifier: t.variableName,
        NumberLiteral: t.number,
        StringLiteral: t.string,
        BooleanLiteral: t.bool,
        FunctionCall: t.function(t.variableName),
        discoverHowTo: t.definitionKeyword,
        expertsClaim: t.definitionKeyword,
        toBe: t.operatorKeyword,
        rumorHasIt: t.keyword,
        endOfStory: t.keyword,
        whatIf: t.controlKeyword,
        liesBang: t.controlKeyword,
        shockingDevelopment: t.controlKeyword,
        youWontWantToMiss: t.keyword,
        latestNewsOn: t.keyword,
        pleaseLikeAndSubscribe: t.keyword,
        "with of": t.keyword,
        "isActually beats smallerThan": t.compareOperator,
        "and or": t.logicOperator,
        "plus minus times dividedBy modulo": t.arithmeticOperator,
        "( )": t.paren,
        ",": t.separator
      })
    ]
  }),
  languageData: {
    commentTokens: {}
  }
})

export function tabloid() {
  return new LanguageSupport(tabloidLanguage)
}