"""Tests for myagents.commands.sync_workspace."""

import json
from pathlib import Path

import click
import pytest

from myagents.commands import sync_workspace as sync_mod


@pytest.fixture()
def runtime(tmp_path: Path, monkeypatch: pytest.MonkeyPatch) -> Path:
    rt = tmp_path / "runtime"
    (rt / ".agents" / "skills" / "demo").mkdir(parents=True)
    (rt / ".agents" / "skills" / "demo" / "SKILL.md").write_text("demo v1")
    (rt / "agents.md").write_text("agent rules v1")
    (rt / "VERSION").write_text("v0.0.0-test\n")
    monkeypatch.setattr(sync_mod, "get_runtime_root", lambda: rt)
    return rt


@pytest.fixture()
def workspace(tmp_path: Path) -> Path:
    ws = tmp_path / "workspace"
    ws.mkdir()
    return ws


def _read_stamp(ws: Path) -> dict:
    return json.loads((ws / sync_mod.STAMP_NAME).read_text())


class TestSyncWorkspace:
    def test_new_files_copied_and_symlinks_made(
        self, runtime: Path, workspace: Path
    ) -> None:
        report = sync_mod.sync_workspace(workspace)
        skill = workspace / ".agents" / "skills" / "demo" / "SKILL.md"
        assert skill.read_text() == "demo v1"
        assert (workspace / "agents.md").read_text() == "agent rules v1"
        assert (workspace / "CLAUDE.md").is_symlink()
        assert (workspace / ".claude").is_symlink()
        assert report["added"] and not report["skipped"]
        assert _read_stamp(workspace)["version"] == "v0.0.0-test"

    def test_second_run_is_noop(self, runtime: Path, workspace: Path) -> None:
        sync_mod.sync_workspace(workspace)
        report = sync_mod.sync_workspace(workspace)
        assert report == {"added": [], "updated": [], "skipped": [], "removed": []}

    def test_upgrade_overwrites_untouched_file(
        self, runtime: Path, workspace: Path
    ) -> None:
        sync_mod.sync_workspace(workspace)
        (runtime / "agents.md").write_text("agent rules v2")
        report = sync_mod.sync_workspace(workspace)
        assert (workspace / "agents.md").read_text() == "agent rules v2"
        assert "agents.md" in report["updated"]

    def test_user_modified_file_is_skipped(
        self, runtime: Path, workspace: Path
    ) -> None:
        sync_mod.sync_workspace(workspace)
        (workspace / "agents.md").write_text("my local edits")
        (runtime / "agents.md").write_text("agent rules v2")
        report = sync_mod.sync_workspace(workspace)
        assert (workspace / "agents.md").read_text() == "my local edits"
        assert "agents.md" in report["skipped"]

    def test_removed_from_runtime_is_removed_from_workspace(
        self, runtime: Path, workspace: Path
    ) -> None:
        sync_mod.sync_workspace(workspace)
        (runtime / ".agents" / "skills" / "demo" / "SKILL.md").unlink()
        report = sync_mod.sync_workspace(workspace)
        assert not (workspace / ".agents" / "skills" / "demo" / "SKILL.md").exists()
        assert report["removed"]

    def test_git_checkout_refused_without_force(
        self, runtime: Path, workspace: Path
    ) -> None:
        (workspace / ".git").mkdir()
        with pytest.raises(click.ClickException):
            sync_mod.sync_workspace(workspace)
        report = sync_mod.sync_workspace(workspace, force=True)
        assert report["added"]