import { LevelCalculator, Standards, DEFAULT_STANDARDS_DATA, type StandardsConfig, StandardsConfigSchema } from "@blade-and-brawn/calculator";
import type { ActivityPerformance, Player } from "@blade-and-brawn/domain";
import { db } from "../database/db";
import { Value } from "@sinclair/typebox/value";

export class CalculatorService {
    private readonly levelCalculator;

    constructor() {
        this.levelCalculator = new LevelCalculator(
            new Standards(DEFAULT_STANDARDS_DATA),
        );
    }

    calculate(player: Player, activityPerformances: ActivityPerformance[]) {
        return this.levelCalculator.calculate(player, activityPerformances)
    }

    async getConfig(opt: { skipCache?: boolean } = {}): Promise<StandardsConfig> {
        if (!opt.skipCache) return this.levelCalculator.standards.cfg;

        const result = await db.selectFrom("calculator_configs")
            .select(["parameters"])
            .where("is_selected", "=", true)
            .limit(1)
            .executeTakeFirstOrThrow({ errorConstructor: () => new Error("No calculator config selected") });

        const standardsConfig = result.parameters;
        Value.Assert(StandardsConfigSchema, standardsConfig);
        return standardsConfig;
    }
}