import { describe, it } from 'node:test';
import assert from 'node:assert/strict';

import {
    dectNetworkName,
    displayMac,
    formatMac,
    generateDectAccessCode,
    normalizeMac,
} from '../src/webex/dect.js';

// AE's access code convention: 4-digit stores use their own digits; anything
// shorter prefixes '8' and pads the rest to 3. Ports collabFinder's rule
// verbatim so cross-project behaviour stays in sync.
describe('generateDectAccessCode', () => {
    it('uses the store number verbatim for 4-digit stores', () => {
        assert.equal(generateDectAccessCode(1234), '1234');
        assert.equal(generateDectAccessCode('0499'), '0499');
    });

    it('truncates 5+ digit stores to the first 4', () => {
        assert.equal(generateDectAccessCode(12345), '1234');
    });

    it("prefixes '8' and pads for shorter stores", () => {
        assert.equal(generateDectAccessCode(347), '8347');
        assert.equal(generateDectAccessCode(67), '8067');
        assert.equal(generateDectAccessCode(1), '8001');
    });

    it('strips non-digit characters from the input', () => {
        assert.equal(generateDectAccessCode('4-9-9'), '8499');
        assert.equal(generateDectAccessCode('Store 1234'), '1234');
    });
});

describe('normalizeMac', () => {
    it('accepts colon-separated MACs', () => {
        assert.equal(normalizeMac('AA:BB:CC:DD:EE:FF'), 'AABBCCDDEEFF');
    });

    it('accepts hyphen-separated MACs', () => {
        assert.equal(normalizeMac('aa-bb-cc-dd-ee-ff'), 'AABBCCDDEEFF');
    });

    it('accepts unseparated MACs and case-normalizes', () => {
        assert.equal(normalizeMac('aabbccddeeff'), 'AABBCCDDEEFF');
    });

    it('rejects too-short strings', () => {
        assert.equal(normalizeMac('AA:BB:CC'), null);
    });

    it('rejects too-long strings', () => {
        assert.equal(normalizeMac('AA:BB:CC:DD:EE:FF:11'), null);
    });

    it('rejects non-hex characters', () => {
        // "Z" is not hex; after stripping we're left with 10 chars, not 12.
        assert.equal(normalizeMac('AA:BB:CC:ZZ:EE:FF'), null);
    });

    it('returns null for missing input', () => {
        assert.equal(normalizeMac(''), null);
        assert.equal(normalizeMac(null), null);
        assert.equal(normalizeMac(undefined), null);
    });
});

describe('formatMac', () => {
    it('inserts colons every two chars', () => {
        assert.equal(formatMac('AABBCCDDEEFF'), 'AA:BB:CC:DD:EE:FF');
    });
});

describe('displayMac', () => {
    it('formats unseparated MACs (the Webex list-endpoint default)', () => {
        assert.equal(displayMac('aabbccddeeff'), 'AA:BB:CC:DD:EE:FF');
    });

    it('re-formats already-separated MACs consistently', () => {
        assert.equal(displayMac('aa-bb-cc-dd-ee-ff'), 'AA:BB:CC:DD:EE:FF');
    });

    it('passes unrecognised input through instead of throwing', () => {
        assert.equal(displayMac('not-a-mac'), 'not-a-mac');
    });

    it('renders an em-dash for missing values', () => {
        assert.equal(displayMac(null), '—');
        assert.equal(displayMac(undefined), '—');
    });
});

describe('dectNetworkName', () => {
    it('produces the canonical "Store XXXX" name (4-digit padding)', () => {
        assert.equal(dectNetworkName(499), 'Store 0499');
        assert.equal(dectNetworkName(1), 'Store 0001');
        assert.equal(dectNetworkName(1234), 'Store 1234');
        assert.equal(dectNetworkName('67'), 'Store 0067');
    });
});