"""Fork URL resolution logic for `git-setup-remotes`."""

from __future__ import annotations

from git_maintainer_tools import setup_remotes


def test_cli_arg_wins(monkeypatch):
    monkeypatch.delenv("FORK_URL", raising=False)
    # Make helpers fail fast so we know we did not fall through.
    monkeypatch.setattr(setup_remotes.g, "remote_url", lambda _: None)
    assert (
        setup_remotes.resolve_fork_url("git@host:x/y.git", "git@host:canon/z.git")
        == "git@host:x/y.git"
    )


def test_env_var_used_when_arg_missing(monkeypatch):
    monkeypatch.setenv("FORK_URL", "git@host:env/y.git")
    monkeypatch.setattr(setup_remotes.g, "remote_url", lambda _: None)
    assert (
        setup_remotes.resolve_fork_url(None, "git@host:canon/z.git")
        == "git@host:env/y.git"
    )


def test_existing_fork_remote_used(monkeypatch):
    monkeypatch.delenv("FORK_URL", raising=False)

    def fake(name):
        return "git@host:existing/fork.git" if name == "fork" else None

    monkeypatch.setattr(setup_remotes.g, "remote_url", fake)
    assert (
        setup_remotes.resolve_fork_url(None, "git@host:canon/z.git")
        == "git@host:existing/fork.git"
    )


def test_origin_reused_when_not_canonical(monkeypatch):
    monkeypatch.delenv("FORK_URL", raising=False)

    def fake(name):
        return {"origin": "git@host:user/fork.git"}.get(name)

    monkeypatch.setattr(setup_remotes.g, "remote_url", fake)
    assert (
        setup_remotes.resolve_fork_url(None, "git@host:canon/z.git")
        == "git@host:user/fork.git"
    )


def test_origin_ignored_when_canonical(monkeypatch):
    monkeypatch.delenv("FORK_URL", raising=False)
    canonical = "git@host:canon/z.git"

    def fake(name):
        return {"origin": canonical}.get(name)

    monkeypatch.setattr(setup_remotes.g, "remote_url", fake)
    assert setup_remotes.resolve_fork_url(None, canonical) is None