import "dotenv/config";
import { z } from "zod/v4";
import { fromZodError } from "zod-validation-error";
import { ValidationError } from "../utils/errors.js";
const normalizeEnvValue = (value: unknown) => {
if (typeof value !== "string") {
return value;
}
const trimmed = value.trim();
const lowered = trimmed.toLowerCase();
if (lowered === "undefined" || lowered === "null") {
return undefined;
}
return trimmed;
};
const envSchema = z.object({
YNAB_ACCESS_TOKEN: z.preprocess(
normalizeEnvValue,
z.string().min(1, "YNAB_ACCESS_TOKEN must be a non-empty string"),
),
YNAB_DEFAULT_BUDGET_ID: z
.string()
.uuid("YNAB_DEFAULT_BUDGET_ID must be a valid UUID")
.optional(),
YNAB_MCP_ENABLE_DELTA: z.enum(["true", "false"]).optional(),
LOG_LEVEL: z
.enum(["trace", "debug", "info", "warn", "error", "fatal"])
.default("info"),
});
export type AppConfig = z.infer<typeof envSchema>;
export function loadConfig(env: NodeJS.ProcessEnv = process.env): AppConfig {
const result = envSchema.safeParse(env);
if (!result.success) {
const validationError = fromZodError(result.error);
throw new ValidationError(validationError.toString());
}
return result.data;
}
export const RESPONSE_SIZE_LIMIT_BYTES = 90_000;
