119 lines
3.3 KiB
TypeScript
119 lines
3.3 KiB
TypeScript
import { Dice } from "../dice";
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import { TTCQueryParser } from "./TTCQueryParser";
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export class TTCQueryResolver {
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private parser: TTCQueryParser | null;
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private context: QueryableObject | null = null;
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private stack: any[] = [];
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constructor(parser?: TTCQueryParser) {
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this.parser = parser || null;
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}
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public setParser(parser: TTCQueryParser) {
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this.parser = parser;
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}
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public setContext(obj: QueryableObject) {
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this.context = obj;
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}
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public resolve(resolver: string, onDemand?: boolean) {
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const resList = resolver.split(",");
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for (const res of resList) {
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this.stack.push(this.parseResolver(res));
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}
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const last = this.stack.at(-1);
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if (typeof last === "function" && !onDemand) return last();
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if (onDemand) debugger;
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return last;
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}
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private parseResolver(resolver: string) {
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if (this.isArithmetic(resolver)) return this.solveArithmetic(resolver);
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if (this.isQuery(resolver)) return this.runQuery(resolver);
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}
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private isQuery(resolver: string) {
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return (
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resolver.startsWith("?") ||
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resolver.startsWith("_") ||
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/^\$\d\./.test(resolver)
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);
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}
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private runQuery(query: string) {
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if (!this.parser) throw "Parser not defined in query resolver";
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if (query.startsWith("$")) {
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const [_, idx, q] = query.match(/^(\$\d+)\.(.*)/) || [];
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if (!_) throw "Detected stack query but did not match the regex";
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const stackItem = this.getFromStack(idx);
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if (typeof stackItem === "string" && Dice.isDice(stackItem)) {
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return this.handleDice(stackItem, q);
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}
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return this.parser.search(q);
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}
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// if (query.startsWith("?") || query.startsWith("_"))
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return query.startsWith("_") && this.context
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? this.parser.search(query.replace("_", "^"), this.context).at(0)
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: this.parser.search(query.replace(/^[?_].?/, "")).at(0);
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}
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private handleDice(dice: string, query: string) {
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const d = new Dice(dice);
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const [method, n] = query.split(":");
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let num = Number(n);
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if (n && n.startsWith("$")) num = this.getFromStack(n);
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switch (method) {
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case "roll":
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return () => d.roll();
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case "rollAvg":
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return () => d.rollAvg();
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case "rollTimes":
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return () => d.rollTimes(num);
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case "rollTimesAvg":
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return () => d.rollTimesAvg(num);
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default:
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return "No valid method provided for dice";
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}
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}
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private isArithmetic(resolver: string) {
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return resolver.split(/\+|\/|-|\*|\^/).filter((e) => !!e).length > 1;
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}
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private solveArithmetic(resolver: string) {
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const [n1, op, n2] = resolver
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.match(/(\$?\d+)([+\-*\/^])(\$?\d+)/)
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?.slice(1) || ["", "+", ""];
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let num1 = Number(n1),
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num2 = Number(n2);
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if (n1.startsWith("$")) num1 = this.getFromStack<number>(n1);
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if (n2.startsWith("$")) num2 = this.getFromStack<number>(n2);
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switch (op) {
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case "+":
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return num1 + num2;
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case "-":
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return num1 - num2;
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case "*":
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return num1 * num2;
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case "/":
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return num1 / num2;
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case "^":
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return num1 ^ num2;
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default:
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throw "Arithmetic detected but no proper operator assigned";
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}
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}
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public getFromStack<T>(stackIndex: string): T {
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const i = Number(stackIndex.replace("$", ""));
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const val = this.stack[i] as T;
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return val;
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}
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}
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