feat: Admin定价管理界面 + 定价DB配置化 (P2)

2026-06-12 09:52:04 +08:00
parent a55cb56be2
commit d379d181e4
10 changed files with 361 additions and 104 deletions
@@ -0,0 +1,66 @@
+import { Injectable } from '@nestjs/common'
+import { InjectModel } from '@nestjs/mongoose'
+import { Model } from 'mongoose'
+import { SiteConfig, SiteConfigDocument } from './site-config.schema'
+
+interface PricingConfig {
+  interview: { pricePerSession: number; creditsPerPurchase: number }
+  resumeOptimize: { freeLimit: number; pricePerOptimize: number; creditsPerPurchase: number }
+  resumeDownload: { pricePerDownload: number; creditsPerPurchase: number }
+  plans: {
+    growth: { price: number; durationDays: number; credits: { interview: number; resumeOptimize: number; resumeDownload: number }; features: string[] }
+    sprint: { price: number; durationDays: number; credits: { interview: number; resumeOptimize: number; resumeDownload: number }; features: string[] }
+  }
+}
+
+const DEFAULT_PRICING: PricingConfig = {
+  interview: { pricePerSession: 500, creditsPerPurchase: 1 },
+  resumeOptimize: { freeLimit: 3, pricePerOptimize: 300, creditsPerPurchase: 1 },
+  resumeDownload: { pricePerDownload: 200, creditsPerPurchase: 1 },
+  plans: {
+    growth: { price: 1990, durationDays: 30, credits: { interview: 999, resumeOptimize: 20, resumeDownload: 10 }, features: [] },
+    sprint: { price: 4990, durationDays: 30, credits: { interview: 999, resumeOptimize: 50, resumeDownload: 30 }, features: [] },
+  },
+}
+
+@Injectable()
+export class PricingService {
+  private cache: PricingConfig | null = null
+  private cacheTime = 0
+
+  constructor(
+    @InjectModel(SiteConfig.name) private configModel: Model<SiteConfigDocument>,
+  ) {}
+
+  async getConfig(): Promise<PricingConfig> {
+    // Cache for 60s
+    if (this.cache && Date.now() - this.cacheTime < 60000) {
+      return this.cache
+    }
+    try {
+      const doc = await this.configModel.findOne({ key: 'pricing' }).exec()
+      if (doc?.value) {
+        this.cache = this.mergeDefaults(doc.value)
+        this.cacheTime = Date.now()
+        return this.cache
+      }
+    } catch {}
+    return DEFAULT_PRICING
+  }
+
+  invalidateCache() {
+    this.cache = null
+  }
+
+  private mergeDefaults(value: any): PricingConfig {
+    return {
+      interview: { ...DEFAULT_PRICING.interview, ...value?.interview },
+      resumeOptimize: { ...DEFAULT_PRICING.resumeOptimize, ...value?.resumeOptimize },
+      resumeDownload: { ...DEFAULT_PRICING.resumeDownload, ...value?.resumeDownload },
+      plans: {
+        growth: { ...DEFAULT_PRICING.plans.growth, ...value?.plans?.growth, credits: { ...DEFAULT_PRICING.plans.growth.credits, ...value?.plans?.growth?.credits } },
+        sprint: { ...DEFAULT_PRICING.plans.sprint, ...value?.plans?.sprint, credits: { ...DEFAULT_PRICING.plans.sprint.credits, ...value?.plans?.sprint?.credits } },
+      },
+    }
+  }
+}