from emails import pop_account, peek_accounts, remaining_count, _parse_line
import emails as em


def test_parse_line():
    acc = _parse_line("user@example.com:pass123")
    assert acc is not None
    assert acc.email == "user@example.com"
    assert acc.password == "pass123"


def test_parse_line_with_colon_in_password():
    acc = _parse_line("user@example.com:pass:with:colons")
    assert acc is not None
    assert acc.password == "pass:with:colons"


def test_parse_line_empty():
    assert _parse_line("") is None
    assert _parse_line("   ") is None
    assert _parse_line("# comment") is None


def test_parse_line_malformed():
    assert _parse_line("no-colon-here") is None


def test_peek_accounts(tmp_path, monkeypatch):
    f = tmp_path / "emails.txt"
    f.write_text("a@b.com:pass1\nc@d.com:pass2\n")
    monkeypatch.setattr(em, "EMAILS_FILE", f)

    accounts = peek_accounts()
    assert len(accounts) == 2
    assert accounts[0].email == "a@b.com"
    assert accounts[1].email == "c@d.com"

    # peek doesn't consume
    assert remaining_count() == 2


def test_pop_account(tmp_path, monkeypatch):
    f = tmp_path / "emails.txt"
    f.write_text("a@b.com:pass1\nc@d.com:pass2\ne@f.com:pass3\n")
    monkeypatch.setattr(em, "EMAILS_FILE", f)

    acc = pop_account()
    assert acc is not None
    assert acc.email == "a@b.com"
    assert remaining_count() == 2

    acc = pop_account()
    assert acc is not None
    assert acc.email == "c@d.com"
    assert remaining_count() == 1


def test_pop_account_empty(tmp_path, monkeypatch):
    f = tmp_path / "emails.txt"
    f.write_text("")
    monkeypatch.setattr(em, "EMAILS_FILE", f)

    assert pop_account() is None


def test_pop_account_missing_file(tmp_path, monkeypatch):
    monkeypatch.setattr(em, "EMAILS_FILE", tmp_path / "nope.txt")
    assert pop_account() is None


def test_pop_skips_comments(tmp_path, monkeypatch):
    f = tmp_path / "emails.txt"
    f.write_text("# first is comment\na@b.com:pass1\n")
    monkeypatch.setattr(em, "EMAILS_FILE", f)

    acc = pop_account()
    assert acc is not None
    assert acc.email == "a@b.com"
    # Comment line stays in file
    remaining = f.read_text().strip()
    assert remaining == "# first is comment"