export const ROM_ROGUE_DAGGER_MASTERY_TAG = "rom-dagger-mastery";
export const ROM_ROGUE_TREASURE_HUNTER_TAG = "rom-treasure-hunter";
export const ROM_ROGUE_OFF_HAND_MASTERY_TAG = "rom-off-hand-mastery";
export const ROM_ROGUE_OFF_HAND_MASTERY_DAMAGE_PERCENT = 4;
export const ROM_ROGUE_OFF_HAND_MASTERY_ACCURACY_PERCENT = 4;
export const ROM_ROGUE_COERCE_TAG = "rom-rogue-coerce";
export const ROM_ROGUE_COERCE_PASSIVE_SPELL_ID = 493019;
export const ROM_ROGUE_COERCE_LOW_BLOW_SPELL_ID = 490323;
export const ROM_ROGUE_COERCE_DAMAGE_MULTIPLIER = 1.202;
export const ROM_ROGUE_COERCE_ENERGY_COST_REDUCTION = 5;
export const ROM_ROGUE_SHADOW_WALKER_PASSIVE_SPELL_ID = 491537;
export const ROM_ROGUE_INSTANT_SHADOW_READY_TAG = "rom-rogue-instant-shadow-ready";

export interface RomRogueEnchantedThrowContext {
  readonly classId: string;
  readonly secondaryClassId: string | null | undefined;
  readonly sourceActorId: string;
  readonly playerActorId: string;
  readonly attackKind: string;
  readonly isAutoAttack: boolean;
  readonly attackLanded: boolean;
  readonly enchantedThrowActive: boolean;
}

/** Enchanted Throw only follows a landed Rogue/Mage normal attack while its buff is active. */
export function romRogueEnchantedThrowShouldProc(context: RomRogueEnchantedThrowContext): boolean {
  return context.classId === "rom-rogue"
    && context.secondaryClassId === "rom-mage"
    && context.sourceActorId === context.playerActorId
    && context.attackKind === "melee"
    && context.isAutoAttack
    && context.attackLanded
    && context.enchantedThrowActive;
}

export interface RomRogueAbilityAdjustment {
  readonly allowsCombatUse: boolean;
  readonly energyCostReduction: number;
  readonly cooldownIncreaseMs: number;
}

const NO_SHADOW_WALKER_ADJUSTMENT: RomRogueAbilityAdjustment = Object.freeze({
  allowsCombatUse: false,
  energyCostReduction: 0,
  cooldownIncreaseMs: 0,
});

/** Coerce reduces only Low Blow's Energy cost for a Rogue/Scout who learned the passive. */
export function romRogueCoerceAbilityAdjustment(
  classId: string,
  secondaryClassId: string | null | undefined,
  abilitySource: string | undefined,
  abilitySpellId: number,
  passiveSpellIds: readonly number[],
): RomRogueAbilityAdjustment {
  if (classId !== "rom-rogue"
    || secondaryClassId !== "rom-scout"
    || abilitySource !== "runewaker"
    || abilitySpellId !== ROM_ROGUE_COERCE_LOW_BLOW_SPELL_ID
    || !passiveSpellIds.includes(ROM_ROGUE_COERCE_PASSIVE_SPELL_ID)) {
    return NO_SHADOW_WALKER_ADJUSTMENT;
  }
  return {
    allowsCombatUse: false,
    energyCostReduction: ROM_ROGUE_COERCE_ENERGY_COST_REDUCTION,
    cooldownIncreaseMs: 0,
  };
}

export interface RomRogueCoerceDamageContext {
  readonly classId: string;
  readonly abilitySource: string | undefined;
  readonly abilitySpellId: number | undefined;
  readonly passiveTags: readonly string[];
}

/** Current CoA Coerce adds 20.2% damage to Low Blow for a Rogue/Scout. */
export function romRogueCoerceLowBlowDamageMultiplier(context: RomRogueCoerceDamageContext): number {
  return context.classId === "rom-rogue"
    && context.abilitySource === "runewaker"
    && context.abilitySpellId === ROM_ROGUE_COERCE_LOW_BLOW_SPELL_ID
    && context.passiveTags.includes(ROM_ROGUE_COERCE_TAG)
    ? ROM_ROGUE_COERCE_DAMAGE_MULTIPLIER
    : 1;
}

/** Shadow Walker's exact Rogue/Priest payload applies only to Sneak Attack. */
export function romRogueShadowWalkerAdjustment(
  classId: string,
  secondaryClassId: string | null | undefined,
  abilitySource: string | undefined,
  abilitySpellId: number,
  passiveSpellIds: readonly number[],
): RomRogueAbilityAdjustment {
  if (classId !== "rom-rogue"
    || secondaryClassId !== "rom-priest"
    || abilitySource !== "runewaker"
    || abilitySpellId !== 490337
    || !passiveSpellIds.includes(ROM_ROGUE_SHADOW_WALKER_PASSIVE_SPELL_ID)) {
    return NO_SHADOW_WALKER_ADJUSTMENT;
  }
  return {
    allowsCombatUse: true,
    energyCostReduction: 10,
    cooldownIncreaseMs: 10_000,
  };
}

export interface RomRogueDaggerDamageContext {
  readonly classId: string;
  readonly sourceActorId: string;
  readonly playerActorId: string;
  readonly attackKind: string;
  readonly school: string;
  readonly mainHandDagger: boolean;
  readonly passiveTags: readonly string[];
}

/** The RoM passive modifies only the player's physical melee hits while a dagger is equipped in the main hand. */
export function romRogueDaggerDamageMultiplier(context: RomRogueDaggerDamageContext): number {
  return context.classId === "rom-rogue"
    && context.sourceActorId === context.playerActorId
    && context.attackKind === "melee"
    && context.school === "physical"
    && context.mainHandDagger
    && context.passiveTags.includes(ROM_ROGUE_DAGGER_MASTERY_TAG)
    ? 1.1
    : 1;
}

/** Treasure Hunter adds one five percentage point bonus roll to the supported boss-loot path. */
export function romRogueTreasureHunterLootChance(baseChance: number | undefined, passiveActive: boolean): number {
  const base = Number.isFinite(baseChance) ? Math.max(0, Math.min(1, baseChance!)) : 0;
  return passiveActive ? Math.min(1, base + 0.05) : base;
}