brackt/app/routes/admin.sports-seasons.$id.expected-values.server.ts
Claude 7ec17e417d
Fix EV reporting 20 pts for both LLWS 5-6 and 7-8 locked tiers
After an LLWS simulation, a team locked into the 5th-6th tier and one
locked into the 7th-8th tier both showed 20 points EV. They should show
25 and 15.

The simulator and calculateEV were both right. A team locked into the
5-6 tier comes out of llws-simulator at probFifth = probSixth = 0.5, and
against DEFAULT_SCORING_RULES (100/70/50/40/25/25/15/15) that is 25 —
matching calculateBracketPoints, which already knows llws_20 splits 5-8
into two tiers. The Admin -> Expected Values page just wasn't using that
table. It hardcoded its own stale copy:

  const SCORING = [100, 70, 45, 45, 20, 20, 20, 20] as const;

0.5*20 + 0.5*20 = 20 for either tier.

It is not LLWS-specific. Four places carried that same stale table, and
it stayed invisible because a standard single-elimination bracket puts
all four quarterfinal losers in one tier worth avg(25,25,15,15) = 20 —
the same number. It only diverges for the templates that split 5-8
(llws_20, afl_10) and those with a distinct 3rd/4th (llws_20, fifa_48,
where 45/45 should be 50/40). Two of the four *persist* EVs computed
that way, so the wrong values reached the database:

  - expected-values.tsx      displayed EV, the total, and the sort order
  - expected-values.server   manual EV entry, written to expected_value
  - golf-skills.tsx          simulation EVs + snapshots, written
  - surface-elo.tsx          simulation EVs + snapshots, written

All four now use the shared DEFAULT_SCORING_RULES. probability-updater
had a fourth inline copy with the right values; it is folded in too so
there is one table left. The page's 340 total-EV invariant is unchanged
— both tables sum to 340.

A second path collapses the same two tiers, this time in real fantasy
points. calculateBracketPoints falls back to the flat avg([5,6,7,8])
when bracketTemplateId is null, and four call sites resolved the
template by taking an arbitrary scoringEvents row for the sports season
— unordered, and not filtered to rows that actually carry a template. A
season can own several events (a bracket plus schedule events, or a
re-created bracket beside a stale one), so a null row wins at random and
llws_20 is lost. New getBracketTemplateIdsForSportsSeasons in
models/bracket-template.ts filters to events with a template and takes
the most recent, the same rule llws-simulator uses to pick its bracket
event; standings, calculateTeamScore, calculateTeamProjectedScore and
getDraftedParticipantsWithPoints all go through it.

Tests: evFromProbs pinned to 25 / 15 / 20-for-a-single-5-8-tier and the
340 invariant; the new lookup against a mixed set of events; and two
llws-simulator tests that play out a full U.S. side so a team really is
locked into each tier and must come out at exactly 50/50 across it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EmUdy42Rpgx9qZTnpQwirz
2026-08-27 16:11:59 +00:00

66 lines
2.7 KiB
TypeScript

import type { Route } from "./+types/admin.sports-seasons.$id.expected-values";
import { logger } from "~/lib/logger";
import { findSportsSeasonById } from "~/models/sports-season";
import { findParticipantsBySportsSeasonId } from "~/models/season-participant";
import {
batchUpsertParticipantEVs,
getAllParticipantEVsForSeason
} from "~/models/participant-expected-value";
import { DEFAULT_SCORING_RULES } from "~/lib/scoring-types";
export async function loader({ params }: Route.LoaderArgs) {
const sportsSeason = await findSportsSeasonById(params.id);
if (!sportsSeason) {
throw new Response("Sports season not found", { status: 404 });
}
const participants = await findParticipantsBySportsSeasonId(params.id);
const existingEVs = await getAllParticipantEVsForSeason(params.id);
// Create a map of participant ID to EV data
const evMap = new Map(existingEVs.map(ev => [ev.participantId, ev]));
return {
sportsSeason: sportsSeason as typeof sportsSeason & { sport: { id: string; name: string; type: string; slug: string } },
participants,
existingEVs: evMap,
};
}
export async function action({ request, params }: Route.ActionArgs) {
const formData = await request.formData();
const participants = await findParticipantsBySportsSeasonId(params.id);
const participantIds = participants.map((p: { id: string }) => p.id);
try {
const inputs = participantIds.map((participantId) => ({
participantId,
sportsSeasonId: params.id,
probabilities: {
probFirst: parseFloat(formData.get(`probFirst_${participantId}`) as string || "0") / 100,
probSecond: parseFloat(formData.get(`probSecond_${participantId}`) as string || "0") / 100,
probThird: parseFloat(formData.get(`probThird_${participantId}`) as string || "0") / 100,
probFourth: parseFloat(formData.get(`probFourth_${participantId}`) as string || "0") / 100,
probFifth: parseFloat(formData.get(`probFifth_${participantId}`) as string || "0") / 100,
probSixth: parseFloat(formData.get(`probSixth_${participantId}`) as string || "0") / 100,
probSeventh: parseFloat(formData.get(`probSeventh_${participantId}`) as string || "0") / 100,
probEighth: parseFloat(formData.get(`probEighth_${participantId}`) as string || "0") / 100,
},
scoringRules: DEFAULT_SCORING_RULES,
source: "manual" as const,
}));
const results = await batchUpsertParticipantEVs(inputs);
const totalEV = results.reduce((sum, r) => sum + parseFloat(r.expectedValue), 0);
return { success: true, totalEV };
} catch (error) {
logger.error("Error saving probabilities:", error);
return {
error: error instanceof Error ? error.message : "Failed to save probabilities"
};
}
}