50 lines
1.7 KiB
TypeScript
50 lines
1.7 KiB
TypeScript
import type { ParsedRelease } from "../release-parser/types.ts";
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import { compareRank, currentPri, qualityTier, softRank } from "./evaluate.ts";
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import type { QualityFacts, SlotSpec } from "./types.ts";
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/** 缺少关键规格时不能声称同套；集号、文件名、种子 ID 不属于版本身份。 */
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export function seasonReleaseKey(q: QualityFacts): string | null {
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if (!q.resolution || !q.source || !q.videoCodec || !q.releaseGroup?.name) return null;
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return JSON.stringify([
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q.resolution,
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q.source,
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q.videoCodec,
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q.releaseGroup.name
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.toLowerCase()
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.split("@")
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.map((g) => g.trim())
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.sort(),
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[...(q.hdr ?? [])].sort(),
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q.cut ?? "default",
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]);
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}
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export function upgradeSpec(spec: SlotSpec): SlotSpec {
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return {
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...spec,
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...(spec.upgradeRules ? { rules: spec.upgradeRules } : {}),
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...(spec.upgradeHard ? { hard: spec.upgradeHard } : {}),
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};
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}
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/** 优先级、软偏好、规范化规格形成稳定顺序；同档对齐不允许质量降档。 */
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export function selectSeasonRelease(spec: SlotSpec, versions: readonly QualityFacts[]): QualityFacts | undefined {
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let target: QualityFacts | undefined;
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const rank = (q: QualityFacts) => {
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const tier = qualityTier(q, spec);
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return [
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currentPri(spec, q),
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tier.source,
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tier.resolution,
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...softRank(spec, { raw: "", hdr: [], audio: [], ...q } as unknown as ParsedRelease),
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];
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};
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for (const q of versions) {
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const key = seasonReleaseKey(q);
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if (!key) continue;
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const compared = target ? compareRank(rank(q), rank(target)) : 1;
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if (compared > 0 || (compared === 0 && key < seasonReleaseKey(target!)!)) target = q;
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}
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return target;
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}
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