import { z } from "zod"

const envSchema = z.object({
  BETTER_AUTH_SECRET: z.string().min(1, "Missing BETTER_AUTH_SECRET"),
  BETTER_AUTH_URL: z.string().url().optional(),
  NEXT_PUBLIC_CONVEX_URL: z.string().url().optional(),
  DATABASE_URL: z.string().min(1).optional(),
  NEXT_PUBLIC_APP_URL: z.string().url().optional(),
})

const parsed = envSchema.safeParse(process.env)

if (!parsed.success) {
  console.error("Failed to parse environment variables", parsed.error.flatten().fieldErrors)
  throw new Error("Invalid environment configuration")
}

export const env = {
  BETTER_AUTH_SECRET: parsed.data.BETTER_AUTH_SECRET,
  BETTER_AUTH_URL: parsed.data.BETTER_AUTH_URL ?? parsed.data.NEXT_PUBLIC_APP_URL ?? "http://localhost:3000",
  NEXT_PUBLIC_CONVEX_URL: parsed.data.NEXT_PUBLIC_CONVEX_URL,
  DATABASE_URL: parsed.data.DATABASE_URL,
  NEXT_PUBLIC_APP_URL: parsed.data.NEXT_PUBLIC_APP_URL,
}