'use strict';
/**
 * TEAM-GRADIENT CHIPS (D1-finish, 2026-07-31) — Rev-3 pattern from HANDOFF.md:
 *   10-12px chip, 135deg two-colour gradient, placed BEFORE each team abbr and
 *   INSIDE the row, so the ranked opacity ramp (1 / .86 / .64 / .48) dims it too.
 *   Swap for a licensed logo <img> at the same size when assets land.
 *
 * 🔴 COVERAGE IS PARTIAL AND THAT IS DELIBERATE. The System artboard defines a
 * colour pair for only 10 teams; the registry (`lib/teams.js`) holds ~80. We do
 * NOT invent the other ~70 — a wrong team colour is a recognition error the user
 * reads as fact. Unknown teams render the HONEST-NEUTRAL chip (a muted border,
 * no colour claim), never a guessed hue and never a blank gap.
 *
 * Pairs below are lifted VERBATIM from `Vyndr System.dc.html` — no eyedropping,
 * no approximation.
 */

/** abbr -> [c1, c2], exactly as the artboard defines them. */
const TEAM_GRADIENTS = Object.freeze({
  BOS: ['#BD3039', '#6b1c22'],
  CHC: ['#0E3386', '#CC3433'],
  CHI: ['#CE1141', '#6d0a22'],
  DEN: ['#0E4DA4', '#4C8BF5'],
  LAD: ['#005A9C', '#2f7fd0'],
  MIL: ['#00471B', '#0a7a3a'],
  MIN: ['#0C2340', '#236192'],
  NYY: ['#1b3a6b', '#0C2340'],
  PIT: ['#2b2b2b', '#c9a227'],
  SD:  ['#2F241D', '#8a6d4a'],
});

/** The ranked opacity ramp — chips sit inside rows so they dim with the row. */
const RANK_OPACITY = Object.freeze([1, 0.86, 0.64, 0.48]);

/** Opacity for rank index i (clamped to the ramp's tail). */
function rankOpacity(i) {
  const n = Number(i);
  if (!Number.isFinite(n) || n < 0) return RANK_OPACITY[0];
  return RANK_OPACITY[Math.min(Math.floor(n), RANK_OPACITY.length - 1)];
}

/**
 * chipStyle(abbr) — inline style for the chip, or the honest-neutral style when
 * the team has no designed colour. Returns `{ style, known }` so a caller can
 * tell "we know this team" from "we are not claiming to".
 */
function chipStyle(abbr) {
  const key = String(abbr || '').trim().toUpperCase();
  const pair = TEAM_GRADIENTS[key];
  const base = {
    display: 'inline-block', width: 10, height: 10, borderRadius: 3,
    verticalAlign: -1.5, marginRight: 3,
  };
  if (!pair) {
    // HONEST-NEUTRAL: a shape, not a colour claim.
    return { known: false, style: { ...base, background: 'transparent', border: '1px solid var(--border-hi)' } };
  }
  return { known: true, style: { ...base, background: `linear-gradient(135deg,${pair[0]},${pair[1]})` } };
}

/** How much of the registry we actually have colours for — reported, not hidden. */
function coverage(totalTeams) {
  const known = Object.keys(TEAM_GRADIENTS).length;
  const total = Number(totalTeams);
  return { known, total: Number.isFinite(total) ? total : null };
}

module.exports = { TEAM_GRADIENTS, RANK_OPACITY, rankOpacity, chipStyle, coverage };