538 lines
15 KiB
TypeScript
538 lines
15 KiB
TypeScript
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import db from '../config/database';
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import { logger } from '../utils/logger';
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import { UserAssetService } from './UserAssetService';
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import {
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MemberLevel,
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MemberLevelRule,
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MemberLevelRuleCreateInput,
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} from '../models/UserAsset';
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/**
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* MemberLevelService - 会员等级系统
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*
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* [BE-UA003] 会员等级系统
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* @description 管理会员等级规则、等级升降、权益配置
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*
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* 功能定位：
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* - 会员等级规则管理
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* - 等级自动升降
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* - 会员权益配置
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* - 等级统计报表
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*
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* 安全约束：
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* - 所有操作必须携带五元组追踪信息
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* - 等级变更必须记录日志
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*
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* @author AI-Backend-7
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* @taskId BE-UA003
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*/
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export class MemberLevelService {
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private static readonly RULE_TABLE = 'cf_member_level_rule';
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private static readonly LOG_TABLE = 'cf_member_level_log';
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/**
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* 初始化数据库表
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* 遵循幂等性原则：使用 hasTable 前置校验
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*/
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static async initTable(): Promise<void> {
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const hasRuleTable = await db.schema.hasTable(this.RULE_TABLE);
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if (!hasRuleTable) {
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logger.info(`[MemberLevelService] Creating ${this.RULE_TABLE} table...`);
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await db.schema.createTable(this.RULE_TABLE, (table) => {
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table.string('id', 36).primary();
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table.string('tenant_id', 64).index();
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table.enum('level', ['BRONZE', 'SILVER', 'GOLD', 'PLATINUM', 'DIAMOND']).notNullable();
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table.integer('min_score').notNullable();
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table.integer('max_score').notNullable();
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table.decimal('discount', 5, 4).defaultTo(1.0).notNullable();
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table.decimal('points_multiplier', 5, 4).defaultTo(1.0).notNullable();
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table.json('benefits').notNullable();
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table.boolean('is_active').defaultTo(true).notNullable();
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table.timestamp('created_at').defaultTo(db.fn.now());
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table.timestamp('updated_at').defaultTo(db.fn.now());
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table.index(['tenant_id', 'level'], 'idx_rule_tenant_level');
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});
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logger.info(`[MemberLevelService] Table ${this.RULE_TABLE} created`);
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}
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const hasLogTable = await db.schema.hasTable(this.LOG_TABLE);
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if (!hasLogTable) {
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logger.info(`[MemberLevelService] Creating ${this.LOG_TABLE} table...`);
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await db.schema.createTable(this.LOG_TABLE, (table) => {
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table.string('id', 36).primary();
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table.string('tenant_id', 64).notNullable().index();
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table.string('shop_id', 64).notNullable().index();
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table.string('user_id', 64).notNullable().index();
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table.string('trace_id', 64).notNullable();
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table.enum('old_level', ['BRONZE', 'SILVER', 'GOLD', 'PLATINUM', 'DIAMOND']);
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table.enum('new_level', ['BRONZE', 'SILVER', 'GOLD', 'PLATINUM', 'DIAMOND']).notNullable();
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table.integer('old_score');
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table.integer('new_score').notNullable();
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table.string('change_type', 32).notNullable();
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table.text('reason');
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table.timestamp('created_at').defaultTo(db.fn.now());
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table.index(['tenant_id', 'user_id'], 'idx_log_user');
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table.index(['created_at'], 'idx_log_time');
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});
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logger.info(`[MemberLevelService] Table ${this.LOG_TABLE} created`);
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}
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}
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/**
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* 创建或更新等级规则
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* @param input 规则创建输入
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* @returns 规则ID
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*/
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static async createOrUpdateRule(input: MemberLevelRuleCreateInput): Promise<string> {
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const existing = await db(this.RULE_TABLE)
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.where({
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tenant_id: input.tenantId || null,
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level: input.level,
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})
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.first();
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if (existing) {
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await db(this.RULE_TABLE)
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.where({ id: existing.id })
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.update({
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min_score: input.minScore,
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max_score: input.maxScore,
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discount: input.discount,
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points_multiplier: input.pointsMultiplier,
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benefits: JSON.stringify(input.benefits),
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is_active: input.isActive !== undefined ? input.isActive : true,
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updated_at: new Date(),
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});
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logger.info(`[MemberLevelService] Rule updated: level=${input.level}, tenantId=${input.tenantId || 'global'}`);
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return existing.id;
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}
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const id = this.generateId();
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const now = new Date();
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await db(this.RULE_TABLE).insert({
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id,
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tenant_id: input.tenantId || null,
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level: input.level,
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min_score: input.minScore,
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max_score: input.maxScore,
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discount: input.discount,
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points_multiplier: input.pointsMultiplier,
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benefits: JSON.stringify(input.benefits),
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is_active: input.isActive !== undefined ? input.isActive : true,
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created_at: now,
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updated_at: now,
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});
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logger.info(`[MemberLevelService] Rule created: id=${id}, level=${input.level}, tenantId=${input.tenantId || 'global'}`);
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return id;
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}
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/**
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* 获取等级规则
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* @param tenantId 租户ID（可选，为空则获取全局规则）
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* @param level 等级
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* @returns 等级规则
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*/
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static async getRule(tenantId: string | undefined, level: MemberLevel): Promise<MemberLevelRule | null> {
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let query = db(this.RULE_TABLE)
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.where('level', level)
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.where('is_active', true);
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if (tenantId) {
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query = query.where(function(this: any) {
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this.whereNull('tenant_id').orWhere('tenant_id', tenantId);
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});
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} else {
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query = query.whereNull('tenant_id');
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}
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const row = await query.orderBy('tenant_id', 'desc').first();
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if (!row) return null;
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return this.mapRowToRule(row);
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}
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/**
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* 获取所有等级规则
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* @param tenantId 租户ID（可选）
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* @returns 等级规则列表
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*/
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static async getAllRules(tenantId?: string): Promise<MemberLevelRule[]> {
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let query = db(this.RULE_TABLE)
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.where('is_active', true);
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if (tenantId) {
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query = query.where(function(this: any) {
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this.whereNull('tenant_id').orWhere('tenant_id', tenantId);
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});
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} else {
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query = query.whereNull('tenant_id');
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}
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const rows = await query.orderBy('min_score', 'asc');
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const rules: MemberLevelRule[] = [];
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const seenLevels = new Set<string>();
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for (const row of rows) {
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if (!seenLevels.has(row.level)) {
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rules.push(this.mapRowToRule(row));
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seenLevels.add(row.level);
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}
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}
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return rules;
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}
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/**
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* 根据积分计算等级
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* @param tenantId 租户ID
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* @param score 积分
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* @returns 等级
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*/
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static async calculateLevel(tenantId: string, score: number): Promise<MemberLevel> {
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const rules = await this.getAllRules(tenantId);
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if (rules.length === 0) {
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return UserAssetService.calculateLevel(score);
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}
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for (const rule of rules) {
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if (score >= rule.minScore && score <= rule.maxScore) {
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return rule.level;
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}
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}
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const sortedRules = [...rules].sort((a, b) => b.minScore - a.minScore);
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for (const rule of sortedRules) {
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if (score >= rule.minScore) {
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return rule.level;
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}
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}
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return 'BRONZE';
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}
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/**
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* 获取等级权益
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* @param tenantId 租户ID
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* @param level 等级
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* @returns 权益列表
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*/
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static async getLevelBenefits(tenantId: string, level: MemberLevel): Promise<string[]> {
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const rule = await this.getRule(tenantId, level);
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return rule?.benefits || [];
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}
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/**
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* 获取等级折扣
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* @param tenantId 租户ID
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* @param level 等级
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* @returns 折扣率（0-1）
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*/
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static async getLevelDiscount(tenantId: string, level: MemberLevel): Promise<number> {
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const rule = await this.getRule(tenantId, level);
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return rule?.discount || 1.0;
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}
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/**
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* 获取等级积分倍率
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* @param tenantId 租户ID
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* @param level 等级
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* @returns 积分倍率
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*/
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static async getLevelPointsMultiplier(tenantId: string, level: MemberLevel): Promise<number> {
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const rule = await this.getRule(tenantId, level);
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return rule?.pointsMultiplier || 1.0;
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}
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/**
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* 升级用户等级
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* @param tenantId 租户ID
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* @param shopId 店铺ID
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* @param userId 用户ID
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* @param newLevel 新等级
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* @param reason 原因
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* @param traceId 追踪ID
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*/
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static async upgradeLevel(
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tenantId: string,
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shopId: string,
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userId: string,
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newLevel: MemberLevel,
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reason: string,
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traceId: string
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): Promise<void> {
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const asset = await UserAssetService.getByUserId(tenantId, shopId, userId);
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if (!asset) {
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throw new Error(`User asset not found: userId=${userId}`);
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}
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const oldLevel = asset.memberLevel;
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if (oldLevel === newLevel) {
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return;
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}
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await db('cf_user_asset')
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.where({ tenant_id: tenantId, shop_id: shopId, user_id: userId })
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.update({
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member_level: newLevel,
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updated_at: new Date(),
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});
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await this.logLevelChange({
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tenantId,
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shopId,
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userId,
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oldLevel,
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newLevel,
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oldScore: asset.memberScore,
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newScore: asset.memberScore,
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changeType: this.getLevelOrder(newLevel) > this.getLevelOrder(oldLevel) ? 'UPGRADE' : 'DOWNGRADE',
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reason,
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traceId,
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});
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logger.info(`[MemberLevelService] Level changed: userId=${userId}, oldLevel=${oldLevel}, newLevel=${newLevel}, traceId=${traceId}`);
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}
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/**
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* 批量重新计算用户等级
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* @param tenantId 租户ID
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* @param shopId 店铺ID
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* @returns 更新的用户数
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*/
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static async batchRecalculateLevels(
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tenantId: string,
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shopId?: string
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): Promise<number> {
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let query = db('cf_user_asset').where('tenant_id', tenantId);
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if (shopId) {
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query = query.where('shop_id', shopId);
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}
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const users = await query;
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let updatedCount = 0;
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for (const user of users) {
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try {
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const newLevel = await this.calculateLevel(tenantId, user.member_score);
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if (newLevel !== user.member_level) {
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await this.upgradeLevel(
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tenantId,
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user.shop_id,
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user.user_id,
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newLevel,
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'系统自动计算',
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`AUTO-RECALC-${Date.now()}`
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);
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updatedCount++;
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}
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} catch (error: any) {
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logger.error(`[MemberLevelService] Failed to recalculate level: userId=${user.user_id}, error=${error.message}`);
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}
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}
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logger.info(`[MemberLevelService] Batch recalculate completed: updated=${updatedCount}`);
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return updatedCount;
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}
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/**
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* 获取等级变更历史
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* @param tenantId 租户ID
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* @param userId 用户ID
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|
|
* @param limit 限制条数
|
|||
|
|
* @returns 变更历史
|
|||
|
|
*/
|
|||
|
|
static async getLevelHistory(
|
|||
|
|
tenantId: string,
|
|||
|
|
userId: string,
|
|||
|
|
limit: number = 20
|
|||
|
|
): Promise<Array<{
|
|||
|
|
oldLevel: MemberLevel | null;
|
|||
|
|
newLevel: MemberLevel;
|
|||
|
|
changeType: string;
|
|||
|
|
reason: string;
|
|||
|
|
createdAt: Date;
|
|||
|
|
}>> {
|
|||
|
|
const rows = await db(this.LOG_TABLE)
|
|||
|
|
.where({ tenant_id: tenantId, user_id: userId })
|
|||
|
|
.orderBy('created_at', 'desc')
|
|||
|
|
.limit(limit);
|
|||
|
|
|
|||
|
|
return rows.map(row => ({
|
|||
|
|
oldLevel: row.old_level,
|
|||
|
|
newLevel: row.new_level,
|
|||
|
|
changeType: row.change_type,
|
|||
|
|
reason: row.reason,
|
|||
|
|
createdAt: row.created_at,
|
|||
|
|
}));
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 获取等级分布统计
|
|||
|
|
* @param tenantId 租户ID
|
|||
|
|
* @param shopId 店铺ID（可选）
|
|||
|
|
* @returns 等级分布
|
|||
|
|
*/
|
|||
|
|
static async getLevelDistribution(
|
|||
|
|
tenantId: string,
|
|||
|
|
shopId?: string
|
|||
|
|
): Promise<Record<MemberLevel, number>> {
|
|||
|
|
let query = db('cf_user_asset').where('tenant_id', tenantId);
|
|||
|
|
if (shopId) {
|
|||
|
|
query = query.where('shop_id', shopId);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
const rows = await query;
|
|||
|
|
|
|||
|
|
const distribution: Record<MemberLevel, number> = {
|
|||
|
|
BRONZE: 0,
|
|||
|
|
SILVER: 0,
|
|||
|
|
GOLD: 0,
|
|||
|
|
PLATINUM: 0,
|
|||
|
|
DIAMOND: 0,
|
|||
|
|
};
|
|||
|
|
|
|||
|
|
for (const row of rows) {
|
|||
|
|
distribution[row.member_level as MemberLevel]++;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
return distribution;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 初始化默认等级规则
|
|||
|
|
*/
|
|||
|
|
static async initDefaultRules(): Promise<void> {
|
|||
|
|
const defaultRules: MemberLevelRuleCreateInput[] = [
|
|||
|
|
{
|
|||
|
|
level: 'BRONZE',
|
|||
|
|
minScore: 0,
|
|||
|
|
maxScore: 499,
|
|||
|
|
discount: 1.0,
|
|||
|
|
pointsMultiplier: 1.0,
|
|||
|
|
benefits: ['基础积分获取', '生日优惠'],
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
level: 'SILVER',
|
|||
|
|
minScore: 500,
|
|||
|
|
maxScore: 1999,
|
|||
|
|
discount: 0.98,
|
|||
|
|
pointsMultiplier: 1.2,
|
|||
|
|
benefits: ['基础积分获取', '生日优惠', '专属客服', '优先发货'],
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
level: 'GOLD',
|
|||
|
|
minScore: 2000,
|
|||
|
|
maxScore: 4999,
|
|||
|
|
discount: 0.95,
|
|||
|
|
pointsMultiplier: 1.5,
|
|||
|
|
benefits: ['基础积分获取', '生日优惠', '专属客服', '优先发货', '会员专享价', '免费退换货'],
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
level: 'PLATINUM',
|
|||
|
|
minScore: 5000,
|
|||
|
|
maxScore: 9999,
|
|||
|
|
discount: 0.92,
|
|||
|
|
pointsMultiplier: 2.0,
|
|||
|
|
benefits: ['基础积分获取', '生日优惠', '专属客服', '优先发货', '会员专享价', '免费退换货', '专属活动', '积分双倍日'],
|
|||
|
|
},
|
|||
|
|
{
|
|||
|
|
level: 'DIAMOND',
|
|||
|
|
minScore: 10000,
|
|||
|
|
maxScore: 999999,
|
|||
|
|
discount: 0.88,
|
|||
|
|
pointsMultiplier: 3.0,
|
|||
|
|
benefits: ['基础积分获取', '生日优惠', '专属客服', '优先发货', '会员专享价', '免费退换货', '专属活动', '积分双倍日', '一对一顾问', '新品优先体验', '年度礼包'],
|
|||
|
|
},
|
|||
|
|
];
|
|||
|
|
|
|||
|
|
for (const rule of defaultRules) {
|
|||
|
|
await this.createOrUpdateRule(rule);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
logger.info(`[MemberLevelService] Default rules initialized: count=${defaultRules.length}`);
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 记录等级变更日志
|
|||
|
|
*/
|
|||
|
|
private static async logLevelChange(params: {
|
|||
|
|
tenantId: string;
|
|||
|
|
shopId: string;
|
|||
|
|
userId: string;
|
|||
|
|
oldLevel: MemberLevel;
|
|||
|
|
newLevel: MemberLevel;
|
|||
|
|
oldScore: number;
|
|||
|
|
newScore: number;
|
|||
|
|
changeType: string;
|
|||
|
|
reason: string;
|
|||
|
|
traceId: string;
|
|||
|
|
}): Promise<void> {
|
|||
|
|
await db(this.LOG_TABLE).insert({
|
|||
|
|
id: this.generateId(),
|
|||
|
|
tenant_id: params.tenantId,
|
|||
|
|
shop_id: params.shopId,
|
|||
|
|
user_id: params.userId,
|
|||
|
|
trace_id: params.traceId,
|
|||
|
|
old_level: params.oldLevel,
|
|||
|
|
new_level: params.newLevel,
|
|||
|
|
old_score: params.oldScore,
|
|||
|
|
new_score: params.newScore,
|
|||
|
|
change_type: params.changeType,
|
|||
|
|
reason: params.reason,
|
|||
|
|
created_at: new Date(),
|
|||
|
|
});
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 获取等级顺序
|
|||
|
|
*/
|
|||
|
|
private static getLevelOrder(level: MemberLevel): number {
|
|||
|
|
const order: Record<MemberLevel, number> = {
|
|||
|
|
BRONZE: 1,
|
|||
|
|
SILVER: 2,
|
|||
|
|
GOLD: 3,
|
|||
|
|
PLATINUM: 4,
|
|||
|
|
DIAMOND: 5,
|
|||
|
|
};
|
|||
|
|
return order[level] || 0;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 生成唯一ID
|
|||
|
|
*/
|
|||
|
|
private static generateId(): string {
|
|||
|
|
return `MLR-${Date.now()}-${Math.random().toString(36).substring(2, 10)}`;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/**
|
|||
|
|
* 将数据库行映射为规则对象
|
|||
|
|
*/
|
|||
|
|
private static mapRowToRule(row: Record<string, any>): MemberLevelRule {
|
|||
|
|
return {
|
|||
|
|
id: row.id,
|
|||
|
|
tenantId: row.tenant_id,
|
|||
|
|
level: row.level,
|
|||
|
|
minScore: Number(row.min_score),
|
|||
|
|
maxScore: Number(row.max_score),
|
|||
|
|
discount: Number(row.discount),
|
|||
|
|
pointsMultiplier: Number(row.points_multiplier),
|
|||
|
|
benefits: JSON.parse(row.benefits),
|
|||
|
|
isActive: Boolean(row.is_active),
|
|||
|
|
createdAt: row.created_at,
|
|||
|
|
updatedAt: row.updated_at,
|
|||
|
|
};
|
|||
|
|
}
|
|||
|
|
}
|