/**
 * @fileoverview Marketplace Domain - Stub Endpoints for Future Development
 * v0.18.0 Enhancement: Explicit stub marking to prevent early assumptions
 * Purpose: Define marketplace structure without premature implementation
 */

import { z } from 'zod';

// Marketplace stub response (Management improvement #6)
export const MarketplaceStubResponse = z.object({
  success: z.literal(true),
  data: z.array(z.never()).length(0),        // Always empty array
  requestId: z.string(),
  timestamp: z.string().datetime(),
  
  // Explicit stub marking
  meta: z.object({
    contractsVersion: z.string(),
    comingSoon: z.literal(true),
    targetVersion: z.literal('v0.19.0'),
    description: z.string(),
    placeholder: z.literal(true)
  }).strict()
}).strict();

// Future marketplace schemas (for RFC documentation only)
export const VendorProfile = z.object({
  id: z.string().uuid(),
  name: z.string(),
  email: z.string().email(),
  status: z.enum(['pending', 'approved', 'suspended']),
  created_at: z.string().datetime(),
  updated_at: z.string().datetime()
}).strict();

export const ModelListing = z.object({
  id: z.string().uuid(),
  vendor_id: z.string().uuid(),
  name: z.string(),
  description: z.string(),
  version: z.string(),
  price_per_signal: z.number().nonnegative(),
  performance_metrics: z.object({
    accuracy: z.number().min(0).max(1),
    sharpe_ratio: z.number(),
    max_drawdown: z.number().min(0).max(1)
  }).strict(),
  status: z.enum(['draft', 'published', 'deprecated']),
  created_at: z.string().datetime()
}).strict();

export const MarketplaceDeployment = z.object({
  id: z.string().uuid(),
  model_id: z.string().uuid(),
  vendor_id: z.string().uuid(),
  status: z.enum(['deploying', 'active', 'scaling', 'stopped', 'failed']),
  resource_pool: z.string(),
  cpu_cores: z.number().int().positive(),
  memory_mb: z.number().int().positive(),
  gpu_count: z.number().int().nonnegative().default(0),
  created_at: z.string().datetime(),
  updated_at: z.string().datetime()
}).strict();

// Marketplace stub endpoints schema
export const MarketplaceStubEndpointSchema = z.object({
  description: z.string(),
  comingSoon: z.string(),
  features: z.array(z.string())
}).strict().describe('Marketplace stub endpoint definition');

// Marketplace stub endpoints with Zod schema validation (all return empty with comingSoon)
export const MarketplaceStubEndpointsSchema = z.record(
  z.string(), // Endpoint path
  MarketplaceStubEndpointSchema
).describe('Marketplace stub endpoints registry');

export const MARKETPLACE_STUB_ENDPOINTS = {
  '/api/infra/marketplace/vendors': {
    description: 'Vendor management system',
    comingSoon: 'v0.19.0',
    features: ['Vendor registration', 'KYC workflow', 'Revenue tracking']
  },
  
  '/api/infra/marketplace/models': {
    description: 'Model catalog and marketplace',
    comingSoon: 'v0.19.0', 
    features: ['Model submission', 'Performance validation', 'Pricing']
  },
  
  '/api/infra/marketplace/deployments': {
    description: 'RunPod deployment orchestration',
    comingSoon: 'v0.19.0',
    features: ['Auto-scaling', 'Health monitoring', 'Resource management']
  },
  
  '/api/infra/marketplace/billing': {
    description: 'Revenue and payment tracking',
    comingSoon: 'v0.19.0',
    features: ['Usage tracking', 'Payment processing', 'Revenue analytics']
  }
} as const satisfies z.infer<typeof MarketplaceStubEndpointsSchema>;

// Helper to create marketplace stub responses
export function createMarketplaceStub(endpoint: string, requestId: string): z.infer<typeof MarketplaceStubResponse> {
  const stubInfo = MARKETPLACE_STUB_ENDPOINTS[endpoint as keyof typeof MARKETPLACE_STUB_ENDPOINTS];
  
  return {
    success: true,
    data: [],
    requestId,
    timestamp: new Date().toISOString(),
    meta: {
      contractsVersion: '0.18.0',
      comingSoon: true,
      targetVersion: 'v0.19.0',
      description: stubInfo?.description || 'Marketplace feature coming soon',
      placeholder: true
    }
  };
}

// Type exports
export type VendorProfileType = z.infer<typeof VendorProfile>;
export type ModelListingType = z.infer<typeof ModelListing>;
export type MarketplaceDeploymentType = z.infer<typeof MarketplaceDeployment>;
export type MarketplaceStubResponseType = z.infer<typeof MarketplaceStubResponse>;
export type MarketplaceStubEndpointType = z.infer<typeof MarketplaceStubEndpointSchema>;
export type MarketplaceStubEndpointsType = z.infer<typeof MarketplaceStubEndpointsSchema>;