mb-grid-solutions.com/lib/env.ts

import { z } from "zod";

/**
 * Helper to treat empty strings as undefined.
 */
const preprocessEmptyString = (val: unknown) => (val === "" ? undefined : val);

/**
 * Environment variable schema.
 */
export const envSchema = z
  .object({
    NODE_ENV: z
      .enum(["development", "production", "test"])
      .default("development"),
    NEXT_PUBLIC_BASE_URL: z.preprocess(
      preprocessEmptyString,
      z.string().url().optional(),
    ),
    NEXT_PUBLIC_TARGET: z
      .enum(["development", "testing", "staging", "production"])
      .optional(),

    // Analytics
    UMAMI_WEBSITE_ID: z.preprocess(
      preprocessEmptyString,
      z.string().optional(),
    ),
    NEXT_PUBLIC_UMAMI_WEBSITE_ID: z.preprocess(
      preprocessEmptyString,
      z.string().optional(),
    ),
    UMAMI_API_ENDPOINT: z.preprocess(
      preprocessEmptyString,
      z.string().url().default("https://analytics.infra.mintel.me"),
    ),

    // Error Tracking
    SENTRY_DSN: z.preprocess(preprocessEmptyString, z.string().optional()),

    // Logging
    LOG_LEVEL: z.enum(["debug", "info", "warn", "error"]).default("info"),

    // Mail
    MAIL_HOST: z.preprocess(preprocessEmptyString, z.string().optional()),
    MAIL_PORT: z.preprocess(
      preprocessEmptyString,
      z.coerce.number().default(587),
    ),
    MAIL_USERNAME: z.preprocess(preprocessEmptyString, z.string().optional()),
    MAIL_PASSWORD: z.preprocess(preprocessEmptyString, z.string().optional()),
    MAIL_FROM: z.preprocess(preprocessEmptyString, z.string().optional()),
    MAIL_RECIPIENTS: z.preprocess(
      (val) => (typeof val === "string" ? val.split(",").filter(Boolean) : val),
      z.array(z.string()).default([]),
    ),

    // Directus
    DIRECTUS_URL: z.preprocess(
      preprocessEmptyString,
      z.string().url().default("http://localhost:8055"),
    ),
    DIRECTUS_ADMIN_EMAIL: z.preprocess(
      preprocessEmptyString,
      z.string().optional(),
    ),
    DIRECTUS_ADMIN_PASSWORD: z.preprocess(
      preprocessEmptyString,
      z.string().optional(),
    ),
    DIRECTUS_API_TOKEN: z.preprocess(
      preprocessEmptyString,
      z.string().optional(),
    ),
    INTERNAL_DIRECTUS_URL: z.preprocess(
      preprocessEmptyString,
      z.string().url().optional(),
    ),

    // Deploy Target
    TARGET: z
      .enum(["development", "testing", "staging", "production"])
      .optional(),
    // Gotify
    GOTIFY_URL: z.preprocess(
      preprocessEmptyString,
      z.string().url().optional(),
    ),
    GOTIFY_TOKEN: z.preprocess(preprocessEmptyString, z.string().optional()),
  })
  .superRefine((data, ctx) => {
    const target = data.NEXT_PUBLIC_TARGET || data.TARGET;
    const isDev = target === "development" || !target;
    const isBuildTimeValidation =
      process.env.SKIP_RUNTIME_ENV_VALIDATION === "true";
    const isServer = typeof window === "undefined";

    // Only enforce server-only variables when running on the server.
    // In the browser, non-NEXT_PUBLIC_ variables are undefined and should not trigger validation errors.
    if (isServer && !isDev && !isBuildTimeValidation && !data.MAIL_HOST) {
      ctx.addIssue({
        code: z.ZodIssueCode.custom,
        message: "MAIL_HOST is required in non-development environments",
        path: ["MAIL_HOST"],
      });
    }
  });

export type Env = z.infer<typeof envSchema>;

/**
 * Collects all environment variables from the process.
 * Explicitly references NEXT_PUBLIC_ variables for Next.js inlining.
 */
export function getRawEnv() {
  return {
    NODE_ENV: process.env.NODE_ENV,
    NEXT_PUBLIC_BASE_URL: process.env.NEXT_PUBLIC_BASE_URL,
    NEXT_PUBLIC_TARGET: process.env.NEXT_PUBLIC_TARGET,
    UMAMI_WEBSITE_ID:
      process.env.UMAMI_WEBSITE_ID || process.env.NEXT_PUBLIC_UMAMI_WEBSITE_ID,
    NEXT_PUBLIC_UMAMI_WEBSITE_ID: process.env.NEXT_PUBLIC_UMAMI_WEBSITE_ID,
    UMAMI_API_ENDPOINT:
      process.env.UMAMI_API_ENDPOINT ||
      process.env.UMAMI_SCRIPT_URL ||
      process.env.NEXT_PUBLIC_UMAMI_SCRIPT_URL,
    SENTRY_DSN: process.env.SENTRY_DSN,
    LOG_LEVEL: process.env.LOG_LEVEL,
    MAIL_HOST: process.env.MAIL_HOST,
    MAIL_PORT: process.env.MAIL_PORT,
    MAIL_USERNAME: process.env.MAIL_USERNAME,
    MAIL_PASSWORD: process.env.MAIL_PASSWORD,
    MAIL_FROM: process.env.MAIL_FROM,
    MAIL_RECIPIENTS: process.env.MAIL_RECIPIENTS,
    DIRECTUS_URL: process.env.DIRECTUS_URL,
    DIRECTUS_ADMIN_EMAIL: process.env.DIRECTUS_ADMIN_EMAIL,
    DIRECTUS_ADMIN_PASSWORD: process.env.DIRECTUS_ADMIN_PASSWORD,
    DIRECTUS_API_TOKEN: process.env.DIRECTUS_API_TOKEN,
    INTERNAL_DIRECTUS_URL: process.env.INTERNAL_DIRECTUS_URL,
    TARGET: process.env.TARGET,
    GOTIFY_URL: process.env.GOTIFY_URL,
    GOTIFY_TOKEN: process.env.GOTIFY_TOKEN,
  };
}