import { Injectable } from '@angular/core';
import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
import { catchError, map, Observable, of } from 'rxjs';

// 定义模板类型枚举
export enum TemplateType {
  OTHER = 0,
  NEW_USER_WELCOM = 1, // 欢迎与引导
  ENCOURAGE_AND_REWARD = 2, // 鼓励与奖励
  DAILY_REWARD_REMINDER = 3, // 每日奖励提醒
  PERSONALIZED_RECOMMENDATION = 4, // 个性化推荐
  NEW_CONTENT_REMINDER = 5, // 新画作提醒
  HOT_CONTENT_RECOMMENDATION = 6, // 热门画作推荐
  LIMITED_TIME_EVENT_REMINDER = 7, // 限时活动提醒
  HOLIDAY_CELEBRATION = 8, // 节日/特殊日庆贺
  COMPLETION_ENCOURAGEMENT = 9, // 完成度鼓励
  SOCIAL_SHARING_ENCOURAGEMENT = 10, // 社交分享鼓励
  UNACTIVE_USER_RECALL = 11, // 长时间不活跃用户召回
  NEW_FEATURE_INTRODUCTION = 12, // 新功能介绍
  CHALLENGE_TASK_REMINDER = 13, // 挑战任务提醒
}

// 定义模板类型映射
export const TEMPLATE_TYPE_MAP: Record<TemplateType, string> = {
  [TemplateType.OTHER]: '其他',
  [TemplateType.NEW_USER_WELCOM]: '欢迎与引导',
  [TemplateType.ENCOURAGE_AND_REWARD]: '鼓励与奖励',
  [TemplateType.DAILY_REWARD_REMINDER]: '每日奖励提醒',
  [TemplateType.PERSONALIZED_RECOMMENDATION]: '个性化推荐',
  [TemplateType.NEW_CONTENT_REMINDER]: '新画作提醒',
  [TemplateType.HOT_CONTENT_RECOMMENDATION]: '热门画作推荐',
  [TemplateType.LIMITED_TIME_EVENT_REMINDER]: '限时活动提醒',
  [TemplateType.HOLIDAY_CELEBRATION]: '假日/节日主题',
  [TemplateType.COMPLETION_ENCOURAGEMENT]: '完成度鼓励',
  [TemplateType.SOCIAL_SHARING_ENCOURAGEMENT]: '社交分享鼓励',
  [TemplateType.UNACTIVE_USER_RECALL]: '长时间不活跃用户召回',
  [TemplateType.NEW_FEATURE_INTRODUCTION]: '新功能介绍',
  [TemplateType.CHALLENGE_TASK_REMINDER]: '挑战任务提醒',
};

// 新增 ActionType 枚举和映射
export enum ActionType {
  GO_APP = 'go/app',
  GO_ART = 'go/art',
  GO_ALBUM = 'go/album',
  GAIN_HINT = 'gain/hint',
  KEEP_GOING = 'keepgoing',
}

export const ACTION_TYPE_MAP: Record<ActionType, string> = {
  [ActionType.GO_APP]: '打开应用',
  [ActionType.GO_ART]: '打开填色作品',
  [ActionType.GO_ALBUM]: '打开专辑',
  [ActionType.GAIN_HINT]: '获取提示奖励',
  [ActionType.KEEP_GOING]: '继续完成作品',
};

export const ACTION_PARAM_PLACEHOLDERS: Record<ActionType, string> = {
  [ActionType.GO_APP]: '',
  [ActionType.GO_ART]: '输入作品ID',
  [ActionType.GO_ALBUM]: '输入专辑ID',
  [ActionType.GAIN_HINT]: '输入提示数量',
  [ActionType.KEEP_GOING]: '输入作品ID',
};

// 定义消息模板接口
export interface IMessageTemplate {
  _id: string;
  templateName: string;
  templateType: TemplateType;
  description: string;
  messageTitle: { [key: string]: string };
  messageContent: { [key: string]: string };
  image?: string;
  bigger?: boolean;
  action?: ActionType;
  param?: string;
  extend?: string;
  createdAt: Date;
  updatedAt: Date;
}

// 定义创建/更新模板的数据结构
export interface MessageTemplateData {
  templateName: string;
  templateType: TemplateType;
  descritpion: string;
  messageTitle: { [key: string]: string };
  messageContent: { [key: string]: string };
  image?: string;
  bigger?: boolean;
  action?: string;
  param?: string;
  extend?: string;
}

// 定义目标用户筛选项相关接口
export interface FilterCondition {
  field: string;
  operator: string;
  value: any;
}

export interface FieldConfig {
  value: string;
  label: string;
  type: 'country' | 'date' | 'number' | 'number_days' | 'text';
}

export interface OperatorOption {
  value: string;
  label: string;
  valueType: 'single' | 'multiple' | 'range';
}

// 更新模板信息接口
export interface IMessageTemplateInfo {
  _id: string;
  templateName: string;
  templateType?: TemplateType;
  description?: string;
  createdAt?: Date;
  updatedAt?: Date;
}

// 策略接口保持不变
export interface IMessageStrategy {
  _id: string;
  name: string;
  description?: string;
  templates: IMessageTemplateInfo[]; // 使用 IMessageTemplateInfo 类型
  createdAt: Date;
  updatedAt: Date;
}

// 创建策略数据接口保持不变
export interface MessageStrategyData {
  name: string;
  description?: string;
  templates: string[]; // 创建时只需要模板ID数组
}

// 定义消息活动接口
export interface IMessageActivity {
  _id: string;
  name: string;
  templateId: string;
  image?: string;
  bigger: boolean;
  action?: ActionType;
  description: string;
  param?: string;
  extend?: string;
  strategy: number;
  filter?: FilterCondition[];
  scheduleAt?: string;
  everyday: boolean;
  status: number;
  createdAt: Date;
  updatedAt: Date;
}

// 定义创建/更新消息活动的数据结构
export interface MessageActivityData {
  name: string;
  templateId: string;
  image?: string;
  bigger: boolean;
  action?: string;
  param?: string;
  extend?: string;
  strategy: number;
  filter?: FilterCondition[];
  scheduleAt?: string;
  everyday: boolean;
  status: number;
  description: string;
}

// 定义消息记录接口
export interface IMessageRecord {
  _id: string;
  uid: string;
  cc?: string;
  activityId?: string;
  activityName?: string;
  templateId?: string;
  templateName?: string;
  strategyId?: string;
  strategyName?: string;
  title: string;
  content: string;
  image?: string;
  bigger: boolean;
  action?: string;
  param?: string;
  extend?: string;
  status: number;
  inforeground?: boolean;
  errno?: string;
  fcmReceipt?: string;
  plannedSendAt?: Date;
  actualSendAt?: Date;
  deliveredAt?: Date;
  openedAt?: Date;
  createdAt: Date;
  updatedAt: Date;
}

// 定义分页响应接口
export interface IMessageRecordPaginationResponse {
  success: boolean;
  data: IMessageRecord[];
  pagination: {
    total: number;
    page: number;
    limit: number;
    totalPages: number;
  };
}

// 定义删除操作的响应结构
interface DeleteResponse {
  deletedCount?: number;
}

@Injectable({
  providedIn: 'root',
})
export class MessageService {
  private templatesApiUrl = '/api/message-template';
  private activitiesApiUrl = '/api/message-activity';
  private activityListApiUri = '/api/message-activities';
  private recordsApiUrl = '/api/message-record';
  private recordsListApiUrl = '/api/message-records';
  private strategiesApiUrl = '/api/message-strategy';

  private httpOptions = {
    headers: new HttpHeaders({ 'Content-Type': 'application/json' }),
  };

  constructor(private http: HttpClient) {}

  /**
   * 获取所有客户端行为选项
   */
  getActionOptions(): { value: ActionType; label: string }[] {
    return Object.entries(ACTION_TYPE_MAP).map(([value, label]) => ({
      value: value as ActionType,
      label,
    }));
  }

  /**
   * 获取行为参数占位符
   */
  getActionParamPlaceholder(action: ActionType): string {
    return ACTION_PARAM_PLACEHOLDERS[action] || '输入参数';
  }

  /**
   * 获取所有模板类型选项
   */
  getTemplateTypeOptions(): { value: TemplateType; label: string }[] {
    return Object.entries(TEMPLATE_TYPE_MAP).map(([value, label]) => ({
      value: parseInt(value, 10) as TemplateType,
      label,
    }));
  }

  /**
   * 获取模板类型映射
   */
  getTemplateTypeMap(): Record<TemplateType, string> {
    return TEMPLATE_TYPE_MAP;
  }

  /**
   * 模板管理 API
   */
  createTemplate(
    templateData: MessageTemplateData
  ): Observable<IMessageTemplate> {
    return this.http.post<IMessageTemplate>(
      this.templatesApiUrl,
      templateData,
      this.httpOptions
    );
  }

  getTemplateById(templateId: string): Observable<IMessageTemplate | null> {
    return this.http.get<IMessageTemplate | null>(
      `${this.templatesApiUrl}/${templateId}`,
      this.httpOptions
    );
  }

  getTemplateByName(templateName: string): Observable<IMessageTemplate | null> {
    return this.http.get<IMessageTemplate | null>(
      `${this.templatesApiUrl}/name/${templateName}`,
      this.httpOptions
    );
  }

  getAllTemplates(): Observable<IMessageTemplate[]> {
    return this.http.get<IMessageTemplate[]>(
      this.templatesApiUrl,
      this.httpOptions
    );
  }

  updateTemplate(
    templateId: string,
    updateData: Partial<MessageTemplateData>
  ): Observable<IMessageTemplate | null> {
    return this.http.put<IMessageTemplate | null>(
      `${this.templatesApiUrl}/${templateId}`,
      updateData,
      this.httpOptions
    );
  }

  deleteTemplate(templateId: string): Observable<DeleteResponse> {
    return this.http.delete<DeleteResponse>(
      `${this.templatesApiUrl}/${templateId}`,
      this.httpOptions
    );
  }

  getAllStrategies(): Observable<IMessageStrategy[]> {
    return this.http
      .get<IMessageStrategy[]>('/api/message-strategies', this.httpOptions)
      .pipe(
        map((response) => (Array.isArray(response) ? response : [])),
        catchError((err) => {
          console.error('获取策略失败:', err);
          return of([]);
        })
      );
  }

  getStrategyById(id: string): Observable<IMessageStrategy | null> {
    return this.http.get<IMessageStrategy | null>(
      `${this.strategiesApiUrl}/${id}`,
      this.httpOptions
    );
  }

  createStrategy(
    strategyData: MessageStrategyData
  ): Observable<IMessageStrategy> {
    return this.http.post<IMessageStrategy>(
      this.strategiesApiUrl,
      strategyData,
      this.httpOptions
    );
  }

  updateStrategy(
    id: string,
    updateData: Partial<MessageStrategyData>
  ): Observable<IMessageStrategy | null> {
    return this.http.put<IMessageStrategy | null>(
      `${this.strategiesApiUrl}/${id}`,
      updateData,
      this.httpOptions
    );
  }

  deleteStrategy(id: string): Observable<{ deletedCount?: number }> {
    return this.http.delete<{ deletedCount?: number }>(
      `${this.strategiesApiUrl}/${id}`,
      this.httpOptions
    );
  }

  /**
   * 活动管理 API
   */
  getAllActivities(): Observable<IMessageActivity[]> {
    return this.http.get<IMessageActivity[]>(
      this.activityListApiUri,
      this.httpOptions
    );
  }

  getActivityById(activityId: string): Observable<IMessageActivity | null> {
    return this.http.get<IMessageActivity | null>(
      `${this.activitiesApiUrl}/${activityId}`,
      this.httpOptions
    );
  }

  createActivity(
    activityData: MessageActivityData
  ): Observable<IMessageActivity> {
    return this.http.post<IMessageActivity>(
      this.activitiesApiUrl,
      activityData,
      this.httpOptions
    );
  }

  updateActivity(
    id: string,
    updateData: Partial<MessageActivityData>
  ): Observable<IMessageActivity | null> {
    return this.http.put<IMessageActivity | null>(
      `${this.activitiesApiUrl}/${id}`,
      updateData,
      this.httpOptions
    );
  }

  deleteActivity(id: string): Observable<DeleteResponse> {
    return this.http.delete<DeleteResponse>(
      `${this.activitiesApiUrl}/${id}`,
      this.httpOptions
    );
  }

  updateActivityStatus(
    id: string,
    status: number
  ): Observable<IMessageActivity | null> {
    return this.http.put<IMessageActivity | null>(
      `${this.activitiesApiUrl}/${id}/status`,
      { status },
      this.httpOptions
    );
  }

  /**
   * 语言支持相关
   */
  getSupportedLanguages(): { code: string; name: string }[] {
    return [
      { code: 'en', name: 'English' },
      { code: 'zh-cn', name: '简体中文' },
      { code: 'zh-tw', name: '繁體中文' },
      { code: 'es', name: 'Español' },
      { code: 'fr', name: 'Français' },
      { code: 'de', name: 'Deutsch' },
      { code: 'ja', name: '日本語' },
      { code: 'ko', name: '한국어' },
      { code: 'ru', name: 'Русский' },
      { code: 'pt', name: 'Português' },
    ];
  }

  getLanguageName(code: string): string {
    const lang = this.getSupportedLanguages().find((l) => l.code === code);
    return lang ? lang.name : code;
  }

  /**
   * 目标用户筛选相关
   */
  countTargetUsers(filters: FilterCondition[]): Observable<number> {
    return this.http.post<number>(
      `/api/users/count`,
      { filters },
      this.httpOptions
    );
  }

  /**
   * 模板内容验证
   */
  validateTemplateContent(
    content: string
  ): Observable<{ valid: boolean; message?: string }> {
    return this.http.post<{ valid: boolean; message?: string }>(
      `${this.templatesApiUrl}/validate`,
      { content },
      this.httpOptions
    );
  }

  /**
   * 模板名称可用性检查
   */
  checkTemplateNameAvailable(name: string): Observable<{ available: boolean }> {
    return this.http.post<{ available: boolean }>(
      `${this.templatesApiUrl}/check-name`,
      { name },
      this.httpOptions
    );
  }

  /**
   * 获取模板默认内容
   */
  getDefaultTemplateContent(
    language: string
  ): Observable<{ title: string; content: string }> {
    return this.http.get<{ title: string; content: string }>(
      `${this.templatesApiUrl}/default-content/${language}`,
      this.httpOptions
    );
  }

  /**
   * 消息记录管理 API
   */
  createRecord(
    recordData: Partial<IMessageRecord>
  ): Observable<IMessageRecord> {
    return this.http.post<IMessageRecord>(
      this.recordsApiUrl,
      recordData,
      this.httpOptions
    );
  }

  getPaginatedRecords(params: {
    page?: number;
    limit?: number;
    uid?: string;
    activityId?: string;
    status?: number;
    startDate?: string;
    endDate?: string;
  }): Observable<IMessageRecordPaginationResponse> {
    let httpParams = new HttpParams();

    for (const key in params) {
      if (params.hasOwnProperty(key) && params[key as keyof typeof params]) {
        httpParams = httpParams.append(
          key,
          String(params[key as keyof typeof params])
        );
      }
    }

    return this.http.get<IMessageRecordPaginationResponse>(
      this.recordsListApiUrl,
      {
        ...this.httpOptions,
        params: httpParams,
      }
    );
  }

  getRecordById(recordId: string): Observable<IMessageRecord> {
    return this.http.get<IMessageRecord>(
      `${this.recordsApiUrl}/${recordId}`,
      this.httpOptions
    );
  }

  updateRecord(
    recordId: string,
    updateData: Partial<IMessageRecord>
  ): Observable<IMessageRecord> {
    return this.http.put<IMessageRecord>(
      `${this.recordsApiUrl}/${recordId}`,
      updateData,
      this.httpOptions
    );
  }
}