export interface Wow335LightwellRenewProfile {
  readonly childSpellId: number;
  readonly baseHealPerTick: number;
  readonly ticks: number;
  readonly intervalMs: number;
  readonly durationMs: number;
  /** AzerothCore 3.3.5 spell_bonus_data dot coefficient, applied per tick. */
  readonly spellPowerCoefficientPerTick?: number;
}

const LIGHTWELL_RENEW_PROFILE_BY_CREATURE: Readonly<Record<number, Wow335LightwellRenewProfile>> = {
  // Child spell IDs and tick amounts come from the local 3.3.5 Spell.dbc rows.
  // Spell.dbc lists the 6s aura and 2s tick interval for each rank.
  // The 3.3.5 spell_bonus_data table gives dot_bonus=0.3333 for the first
  // five child IDs; rank 6 (48085) has no matching coefficient row.
  31897: { childSpellId: 7001, baseHealPerTick: 267, ticks: 3, intervalMs: 2_000, durationMs: 6_000, spellPowerCoefficientPerTick: 0.3333 },
  31896: { childSpellId: 27873, baseHealPerTick: 388, ticks: 3, intervalMs: 2_000, durationMs: 6_000, spellPowerCoefficientPerTick: 0.3333 },
  31895: { childSpellId: 27874, baseHealPerTick: 533, ticks: 3, intervalMs: 2_000, durationMs: 6_000, spellPowerCoefficientPerTick: 0.3333 },
  31894: { childSpellId: 28276, baseHealPerTick: 787, ticks: 3, intervalMs: 2_000, durationMs: 6_000, spellPowerCoefficientPerTick: 0.3333 },
  31893: { childSpellId: 48084, baseHealPerTick: 1_305, ticks: 3, intervalMs: 2_000, durationMs: 6_000, spellPowerCoefficientPerTick: 0.3333 },
  // WotLKDB's exact 3.3.5a page for child 48085 (Lightwell Renew Rank 6)
  // reports +62.60% spell power per tick. Keep this distinct from AzerothCore's
  // 0.3333 override for sibling rank 5 (48084), which has no 48085 row there.
  31883: { childSpellId: 48085, baseHealPerTick: 1_540, ticks: 3, intervalMs: 2_000, durationMs: 6_000, spellPowerCoefficientPerTick: 0.626 },
};

export function wow335LightwellRenewProfileForCreature(
  creatureId: number,
): Wow335LightwellRenewProfile | null {
  return LIGHTWELL_RENEW_PROFILE_BY_CREATURE[creatureId] ?? null;
}

/** Returns the cancellation fraction stated in the generated Lightwell rank tooltip. */
export function wow335LightwellDamageCancellationFraction(description: string): number | null {
  const match = /attacks done to you equal to\s+(\d+(?:\.\d+)?)%\s+of your total health will cancel the effect/i
    .exec(description);
  if (!match) return null;
  const percent = Number(match[1]);
  return Number.isFinite(percent) && percent > 0 ? percent / 100 : null;
}