import { describe, expect, it } from "@suaveplan/testing/runner";
import { USER_CODES, UserError } from "./error-codes.js";

describe("USER_CODES registry", () => {
    it("declares 7 stable codes", { timeout: 5000 }, () => {
        const values = Object.values(USER_CODES);
        expect(values.length).toBe(7);
        expect(new Set(values).size).toBe(7);
        for (const v of values) {
            expect(v.startsWith("USER.")).toBe(true);
        }
    });

    it("carries each documented name", { timeout: 5000 }, () => {
        const names: Array<keyof typeof USER_CODES> = [
            "NOT_FOUND",
            "INVALID_INPUT",
            "SELF_DELETE_DISABLED",
            "PROFILE_UPDATE_FAILED",
            "SERVICE_NOT_AVAILABLE",
            "SCHEMA_APPLY_FAILED",
            "ROUTE_PREFIX_COLLISION",
        ];
        for (const n of names) {
            expect(typeof USER_CODES[n]).toBe("string");
        }
    });
});

describe("UserError class", () => {
    it("narrows code to userCode and stores message", { timeout: 5000 }, () => {
        const err = new UserError(USER_CODES.NOT_FOUND, "boom", {
            context: { statusCode: 404 },
        });
        expect(err).toBeInstanceOf(UserError);
        expect(err.code).toBe(USER_CODES.NOT_FOUND);
        expect(err.userCode).toBe(USER_CODES.NOT_FOUND);
        expect(err.message).toBe("boom");
    });

    it("preserves cause chain", { timeout: 5000 }, () => {
        const inner = new Error("inner");
        const err = new UserError(USER_CODES.PROFILE_UPDATE_FAILED, "outer", {
            cause: inner,
        });
        expect(err.cause).toBe(inner);
    });
});