import { z } from 'zod';
import { baseBackendConfigSchema } from '@bytelyst/backend-config';
import { PRODUCT_ID } from './product-config.js';

const envSchema = baseBackendConfigSchema.extend({
  PORT: baseBackendConfigSchema.shape.PORT.default(4016),
  SERVICE_NAME: baseBackendConfigSchema.shape.SERVICE_NAME.default('notelett-backend'),
  DB_PROVIDER: baseBackendConfigSchema.shape.DB_PROVIDER.default('memory'),
  JWT_SECRET: z.string().default('dev-secret-do-not-use-in-prod'),
  COSMOS_DATABASE: baseBackendConfigSchema.shape.COSMOS_DATABASE.default('bytelyst'),
  PRODUCT_ID: z.string().default(PRODUCT_ID),
  PLATFORM_SERVICE_URL: z.string().default('http://localhost:4003'),
  EXTRACTION_SERVICE_URL: z.string().default('http://localhost:4005'),
  MCP_SERVER_URL: z.string().default('http://localhost:4007'),
  TELEMETRY_ENABLED: z.coerce.boolean().default(false),
  FEATURE_FLAGS_ENABLED: z.coerce.boolean().default(false),
  // ── LLM (@bytelyst/llm) ──
  LLM_PROVIDER: z.enum(['azure', 'openai', 'mock']).default('mock'),
  LLM_DEFAULT_MODEL: z.string().default('gpt-4o-mini'),
  LLM_VISION_MODEL: z.string().default('gpt-4o'),
  LLM_EMBEDDING_MODEL: z.string().default('text-embedding-3-small'),
  // ── Field Encryption (@bytelyst/field-encrypt) ──
  FIELD_ENCRYPT_ENABLED: z.coerce.boolean().default(true),
  FIELD_ENCRYPT_KEY_PROVIDER: z.enum(['akv', 'env', 'memory']).default('memory'),
  FIELD_ENCRYPT_KEY: z.string().default(''),
  FIELD_ENCRYPT_MEK_NAME: z.string().default('notelett-mek'),
  AZURE_KEYVAULT_URL: z.string().default(''),
  // ── Palace (MemPalace) ──
  PALACE_ENABLED: z.coerce.boolean().default(true),
  PALACE_EXTRACTION_ENABLED: z.coerce.boolean().default(true),
  PALACE_WAKE_UP_BUDGET: z.coerce.number().int().min(100).default(600),
  PALACE_RELEVANCE_HALF_LIFE_DAYS: z.coerce.number().int().min(1).default(90),
  PALACE_DEDUP_THRESHOLD: z.coerce.number().min(0).max(1).default(0.90),
});

export const config = envSchema.parse(process.env);