import { createStore } from "solid-js/store";
import type {
  CharacterStats,
  CharacterSaves,
  InventoryItem,
  MothershipCharacter,
  MothershipStoreState,
  VitalValue,
  StressValue,
} from "./types";

/**
 * 创建默认角色数据
 */
export function createDefaultCharacter(): MothershipCharacter {
  return {
    stats: {
      strength: 50,
      agility: 50,
      combat: 50,
      intellect: 50,
    },
    saves: {
      fear: 50,
      sanity: 50,
      body: 50,
    },
    skills: [],
    inventory: [],
    status: [],
    hp: { current: 0, max: 0 },
    stress: { current: 0, min: 0 },
    wounds: { current: 0, max: 0 },
  };
}

/**
 * 限制数值在 0-99 范围内
 */
function clampStat(value: number): number {
  return Math.max(0, Math.min(99, value));
}

/**
 * 限制数值在指定范围内
 */
function clampValue(value: number, min: number, max: number): number {
  return Math.max(min, Math.min(max, value));
}

const [store, setStore] = createStore<MothershipStoreState>({
  character: createDefaultCharacter(),
});

/**
 * 更新单个统计值
 */
export function setStat<K extends keyof CharacterStats>(
  key: K,
  value: number
): void {
  setStore("character", "stats", key, clampStat(value));
}

/**
 * 批量更新统计值
 */
export function setStats(stats: Partial<CharacterStats>): void {
  setStore("character", "stats", (prev) => ({
    ...prev,
    ...Object.fromEntries(
      Object.entries(stats).map(([key, value]) => [key, clampStat(value)])
    ),
  }));
}

/**
 * 更新单个豁免值
 */
export function setSave<K extends keyof CharacterSaves>(
  key: K,
  value: number
): void {
  setStore("character", "saves", key, clampStat(value));
}

/**
 * 批量更新豁免值
 */
export function setSaves(saves: Partial<CharacterSaves>): void {
  setStore("character", "saves", (prev) => ({
    ...prev,
    ...Object.fromEntries(
      Object.entries(saves).map(([key, value]) => [key, clampStat(value)])
    ),
  }));
}

/**
 * 添加技能
 */
export function addSkill(skill: string): void {
  setStore("character", "skills", (prev) => [...prev, skill]);
}

/**
 * 移除技能
 */
export function removeSkill(skill: string): void {
  setStore("character", "skills", (prev) =>
    prev.filter((s) => s !== skill)
  );
}

/**
 * 设置技能列表
 */
export function setSkills(skills: string[]): void {
  setStore("character", "skills", [...skills]);
}

/**
 * 添加物品到物品栏
 */
export function addInventoryItem(
  name: string,
  quantity: number = 1,
  attributes?: Record<string, any>
): void {
  setStore("character", "inventory", (prev) => [
    ...prev,
    { name, quantity: Math.max(1, quantity), attributes },
  ]);
}

/**
 * 从物品栏移除物品（通过名称）
 */
export function removeInventoryItem(name: string): void {
  setStore("character", "inventory", (prev) =>
    prev.filter((item) => item.name !== name)
  );
}

/**
 * 更新物品数量
 */
export function updateInventoryItemQuantity(
  name: string,
  quantity: number
): void {
  setStore("character", "inventory", (prev) =>
    prev.map((item) =>
      item.name === name
        ? { ...item, quantity: Math.max(0, quantity) }
        : item
    ).filter((item) => item.quantity > 0)
  );
}

/**
 * 更新物品属性
 */
export function updateInventoryItemAttributes(
  name: string,
  attributes: Record<string, any>
): void {
  setStore("character", "inventory", (prev) =>
    prev.map((item) =>
      item.name === name
        ? { ...item, attributes }
        : item
    )
  );
}

/**
 * 添加状态效果
 */
export function addStatus(
  name: string,
  quantity: number = 1,
  attributes?: Record<string, any>
): void {
  setStore("character", "status", (prev) => [
    ...prev,
    { name, quantity: Math.max(1, quantity), attributes },
  ]);
}

/**
 * 移除状态效果
 */
export function removeStatus(name: string): void {
  setStore("character", "status", (prev) =>
    prev.filter((item) => item.name !== name)
  );
}

/**
 * 设置 HP
 */
export function setHP(value: Partial<VitalValue>): void {
  setStore("character", "hp", (prev) => ({
    ...prev,
    ...value,
    current: value.current !== undefined
      ? clampValue(value.current, 0, value.max ?? prev.max)
      : prev.current,
    max: value.max !== undefined
      ? Math.max(0, value.max)
      : prev.max,
  }));
}

/**
 * 受到伤害
 */
export function takeDamage(amount: number): void {
  setStore("character", "hp", (prev) => ({
    ...prev,
    current: Math.max(0, prev.current - amount),
  }));
}

/**
 * 治疗 HP
 */
export function healHP(amount: number): void {
  setStore("character", "hp", (prev) => ({
    ...prev,
    current: Math.min(prev.max, prev.current + amount),
  }));
}

/**
 * 设置压力值
 */
export function setStress(value: Partial<StressValue>): void {
  setStore("character", "stress", (prev) => ({
    ...prev,
    ...value,
    current: value.current !== undefined
      ? clampValue(value.current, value.min ?? prev.min, Number.MAX_SAFE_INTEGER)
      : prev.current,
    min: value.min !== undefined ? Math.max(0, value.min) : prev.min,
  }));
}

/**
 * 增加压力
 */
export function addStress(amount: number): void {
  setStore("character", "stress", (prev) => ({
    ...prev,
    current: prev.current + amount,
  }));
}

/**
 * 减少压力
 */
export function reduceStress(amount: number): void {
  setStore("character", "stress", (prev) => ({
    ...prev,
    current: Math.max(prev.min, prev.current - amount),
  }));
}

/**
 * 设置伤口值
 */
export function setWounds(value: Partial<VitalValue>): void {
  setStore("character", "wounds", (prev) => ({
    ...prev,
    ...value,
    current: value.current !== undefined
      ? clampValue(value.current, 0, value.max ?? prev.max)
      : prev.current,
    max: value.max !== undefined
      ? Math.max(0, value.max)
      : prev.max,
  }));
}

/**
 * 增加伤口
 */
export function addWound(amount: number = 1): void {
  setStore("character", "wounds", (prev) => ({
    ...prev,
    current: Math.min(prev.max, prev.current + amount),
  }));
}

/**
 * 治疗伤口
 */
export function healWound(amount: number = 1): void {
  setStore("character", "wounds", (prev) => ({
    ...prev,
    current: Math.max(0, prev.current - amount),
  }));
}

/**
 * 重置角色到默认状态
 */
export function resetCharacter(): void {
  setStore("character", createDefaultCharacter());
}

/**
 * 设置完整角色数据
 */
export function setCharacter(character: MothershipCharacter): void {
  setStore("character", character);
}

/**
 * 获取当前角色数据
 */
export function getCharacter(): MothershipCharacter {
  return store.character;
}

/**
 * 获取 Store 订阅（用于 SolidJS 组件）
 */
export function useCharacterStore() {
  return store;
}

export { store, setStore };