import type { AbilityDefinition, AbilityEffect } from "./abilityCatalog";
import type { ProcTrigger } from "./combatAuras";

export const ROM_PRIEST_WARRIOR_CONDENSED_RAGE_PHYSICAL_DAMAGE_BONUS = 0.22;
export const ROM_PRIEST_CHAMPION_RAGE_CONTROL_PER_COMPLETED_CHANNEL_SECOND = 20;
export const ROM_PRIEST_CHAMPION_RAGE_CONTROL_CHANNEL_SECOND_MS = 1_000;
export const ROM_PRIEST_VOW_OF_SILENCE_NPC_DURATION_MS = 8_400;
export const ROM_PRIEST_VOW_OF_SILENCE_CHARACTER_DURATION_MS = 4_200;

/** Current CoA Vow of Silence is 8.4s on NPCs and 4.2s on player targets. */
export function romPriestVowOfSilenceDurationMs(characterDefender: boolean): number {
  return characterDefender
    ? ROM_PRIEST_VOW_OF_SILENCE_CHARACTER_DURATION_MS
    : ROM_PRIEST_VOW_OF_SILENCE_NPC_DURATION_MS;
}

/** Current CoA Condensed Rage (493038) passively increases Physical Damage by 22%. */
export function romPriestWarriorCondensedRagePhysicalDamageMultiplier(
  hasCondensedRage: boolean,
): number {
  return hasCondensedRage
    ? 1 + ROM_PRIEST_WARRIOR_CONDENSED_RAGE_PHYSICAL_DAMAGE_BONUS
    : 1;
}

export type RomPriestChampionRageControlProgress =
  | { kind: "channel"; durationMs: number }
  | { kind: "ordinary-cast"; durationMs: number };

/**
 * Current CoA Rage Control (498610) grants 20 Rage per second of channeling.
 * Only whole completed channel-seconds pay out; an ordinary cast never counts.
 */
export function romPriestChampionRageControlGain(
  learnedRageControl: boolean,
  progress: RomPriestChampionRageControlProgress,
): number {
  if (!learnedRageControl || progress.kind !== "channel"
    || !Number.isFinite(progress.durationMs) || progress.durationMs <= 0) return 0;

  const completedSeconds = Math.floor(
    progress.durationMs / ROM_PRIEST_CHAMPION_RAGE_CONTROL_CHANNEL_SECOND_MS,
  );
  return completedSeconds * ROM_PRIEST_CHAMPION_RAGE_CONTROL_PER_COMPLETED_CHANNEL_SECOND;
}

export const ROM_PRIEST_CHAMPION_REGENERATE_PROC_ID = "rom-priest-protection-rune-seal-reset";
export const ROM_PRIEST_CHAMPION_REGENERATE_PROC_ACTION_ID = "rom-priest-protection-rune-seal-reset-heart-rune";
export const ROM_PRIEST_CHAMPION_REGENERATE_PROC_AURA_ID = "rom-priest-protection-rune-seal-regenerate";
export const ROM_PRIEST_CHAMPION_PROTECTION_RUNE_SEAL_SPELL_ID = 498_613;
export const ROM_PRIEST_CHAMPION_REGENERATE_SPELL_ID = 490_269;
export const ROM_PRIEST_CHAMPION_HEART_RUNE_ENERGY_SPELL_ID = 498_612;
/** RuneWaker's exact passive tooltip supplies 8%; current CoA says only "slight chance." */
export const ROM_PRIEST_CHAMPION_REGENERATE_PROC_CHANCE = 0.08;

const ROM_PRIEST_REGENERATE_ABILITY_ID = "rom-priest-general-2";

const PROTECTION_RUNE_SEAL_REGENERATE_PROC_AURA = {
  id: ROM_PRIEST_CHAMPION_REGENERATE_PROC_AURA_ID,
  name: "Protection Rune Seal: Regenerate",
  disposition: "buff" as const,
  // Keep the exact 20-second final HoT tick eligible before aura expiry runs.
  durationMs: 20_001,
  hideFromAuraStrip: true,
  procs: [{
    id: ROM_PRIEST_CHAMPION_REGENERATE_PROC_ID,
    triggers: "periodic" as const,
    abilityIds: [ROM_PRIEST_REGENERATE_ABILITY_ID],
    chance: ROM_PRIEST_CHAMPION_REGENERATE_PROC_CHANCE,
    action: { kind: "custom" as const, id: ROM_PRIEST_CHAMPION_REGENERATE_PROC_ACTION_ID },
  }],
};

export interface RomPriestChampionProtectionRuneSealProcContext {
  readonly primaryClassId: string | null;
  readonly secondaryClassId?: string | null;
  readonly learnedPassiveSpellIds: readonly number[];
  readonly trigger: ProcTrigger;
  readonly triggeringAbilitySpellId?: number;
  readonly healingAmount?: number;
}

/**
 * Protection Rune Seal resets Heart Rune Energy only for a learned exact pair
 * and a positive periodic heal from Regenerate. The chance roll is owned by
 * the aura proc definition above.
 */
export function romPriestChampionProtectionRuneSealProcIsEligible(
  context: RomPriestChampionProtectionRuneSealProcContext,
): boolean {
  return context.primaryClassId === "rom-priest"
    && context.secondaryClassId === "rom-champion"
    && context.learnedPassiveSpellIds.includes(ROM_PRIEST_CHAMPION_PROTECTION_RUNE_SEAL_SPELL_ID)
    && context.trigger === "periodic"
    && context.triggeringAbilitySpellId === ROM_PRIEST_CHAMPION_REGENERATE_SPELL_ID
    && Number.isFinite(context.healingAmount)
    && (context.healingAmount ?? 0) > 0;
}

/**
 * The local Infused Light Chain cooldown rider is not present in current CoA:
 * ID 498610 is now Rage Control, so it no longer overrides Chain of Light.
 */
export function romPriestChampionCooldownOverride(
  _ability: AbilityDefinition,
  _learnedPassiveSourceIds: readonly number[],
): number | null {
  return null;
}

/** Righteous Explosion removes every modeled harmful effect from the party. */
export function romPriestChampionCastEffects(
  ability: AbilityDefinition,
  effects: readonly AbilityEffect[],
  learnedPassiveSpellIds: readonly number[] = [],
): readonly AbilityEffect[] {
  if (ability.source === "runewaker"
    && ability.classId === "rom-priest"
    && ability.dbcSpellId === 490269
    && learnedPassiveSpellIds.includes(ROM_PRIEST_CHAMPION_PROTECTION_RUNE_SEAL_SPELL_ID)) {
    return [{
      kind: "apply-aura",
      aura: PROTECTION_RUNE_SEAL_REGENERATE_PROC_AURA,
      recipient: "caster",
      sourceEffectType: -1,
      sourceAuraType: -1,
      miscValue: 0,
      triggerSpellId: 498613,
    }, ...effects];
  }

  if (ability.source !== "runewaker"
    || ability.classId !== "rom-champion"
    || ability.secondaryClassId !== "rom-priest"
    || ability.dbcSpellId !== 499836) return effects;

  return effects.map((effect) => effect.kind === "dispel" && effect.mode === "cleanse"
    ? { ...effect, maxCount: 99, scope: "party" }
    : effect);
}