61 lines
2.0 KiB
TypeScript
61 lines
2.0 KiB
TypeScript
/*
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* Copyright (C) 2026 Fluxer Contributors
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*
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* This file is part of Fluxer.
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*
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* Fluxer is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Fluxer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
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*/
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import type {LimitKey} from '@fluxer/constants/src/LimitConfigMetadata';
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import type {ILimitEvaluator} from '@fluxer/limits/src/ILimitEvaluator';
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import {DEFAULT_FREE_LIMITS} from '@fluxer/limits/src/LimitDefaults';
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import {applyRuleToResolvedLimits, ruleMatches, sortRulesBySpecificity} from '@fluxer/limits/src/LimitRuleRuntime';
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import type {
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LimitConfigSnapshot,
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LimitEvaluationOptions,
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LimitEvaluationResult,
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LimitMatchContext,
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LimitRule,
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} from '@fluxer/limits/src/LimitTypes';
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export class LimitEvaluator implements ILimitEvaluator {
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private readonly sortedRules: Array<LimitRule>;
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constructor(snapshot: LimitConfigSnapshot) {
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this.sortedRules = sortRulesBySpecificity(snapshot.rules);
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}
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resolveAll(ctx: LimitMatchContext, options?: LimitEvaluationOptions): LimitEvaluationResult {
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const evaluationContext = options?.evaluationContext ?? 'user';
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const baseLimits = options?.baseLimits ?? DEFAULT_FREE_LIMITS;
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const resolvedLimits = {...baseLimits};
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for (const rule of this.sortedRules) {
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if (!ruleMatches(rule.filters, ctx)) {
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continue;
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}
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applyRuleToResolvedLimits(resolvedLimits, rule, evaluationContext);
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}
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return {
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limits: resolvedLimits,
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};
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}
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resolveOne(ctx: LimitMatchContext, key: LimitKey, options?: LimitEvaluationOptions): number {
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return this.resolveAll(ctx, options).limits[key];
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}
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}
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