import type { AbilityDefinition } from "./abilityCatalog";
import { targetingRulesForAbility } from "./abilityRules";
import { ROM_PHYSICAL_DARK_DAMAGE_PROFILE } from "./combatDamageProfile";
import type { CombatDamageProfile } from "./combatDamageProfile";

export const ROM_PSYCHIC_WARRIOR_PASSIVE_ID = 499868;
export const ROM_PSYCHIC_WARRIOR_PRIMARY_CLASS_ID = "rom-warlock";
export const ROM_PSYCHIC_WARRIOR_SECONDARY_CLASS_ID = "rom-warrior";

export interface RomPsychicWarriorCasterContext {
  readonly primaryClassId: AbilityDefinition["classId"];
  readonly secondaryClassId: AbilityDefinition["classId"] | null;
  readonly learnedPassiveSpellIds: readonly number[];
  /** True only when the triggering action is a CoA-style magical spell. */
  readonly isMagicalSpell: boolean;
}

export interface RomPsychicWarriorWeaponRider {
  readonly damageProfile: CombatDamageProfile;
  readonly targetMode: "area" | "single-target";
  readonly weaponHand: "main-hand";
  /** Coefficient passed to the combat engine's main-hand weapon-DPS scaling. */
  readonly weaponDpsCoefficient: number;
}

/**
 * Resolve CoA Psychic Warrior's quantified weapon choice for a damaging
 * Warlock spell. The combat model has no integrated Physical Dark composite
 * damage type yet, so this descriptor preserves both tags and must not be
 * collapsed to one DamageSchool by a caller.
 */
export function describeRomPsychicWarriorWeaponRider(
  ability: AbilityDefinition,
  caster: RomPsychicWarriorCasterContext,
): RomPsychicWarriorWeaponRider | null {
  if (caster.primaryClassId !== ROM_PSYCHIC_WARRIOR_PRIMARY_CLASS_ID
    || caster.secondaryClassId !== ROM_PSYCHIC_WARRIOR_SECONDARY_CLASS_ID
    || !caster.learnedPassiveSpellIds.includes(ROM_PSYCHIC_WARRIOR_PASSIVE_ID)
    || !caster.isMagicalSpell
    || ability.source !== "runewaker"
    || ability.classId !== "rom-warlock"
    || ability.passive
    || !ability.effects.some((effect) => effect.kind === "damage")) {
    return null;
  }

  const targeting = targetingRulesForAbility(ability);
  const isAreaDamage = targeting.shape !== "unit"
    || (targeting.maximumTargets ?? 0) > 1
    || (targeting.radius ?? 0) > 0;
  return {
    damageProfile: ROM_PHYSICAL_DARK_DAMAGE_PROFILE,
    targetMode: isAreaDamage ? "area" : "single-target",
    weaponHand: "main-hand",
    weaponDpsCoefficient: isAreaDamage ? 1.875 : 10.5,
  };
}