import shutil
from pathlib import Path

from content_build.__main__ import main

FIXTURE_DIR = Path(__file__).parent / "fixtures" / "valid"


def _lore(tmp_path):
    lore = tmp_path / "lore"
    lore.mkdir()
    shutil.copy(FIXTURE_DIR / "world.md", lore / "world.md")
    return lore


def test_build_then_check_is_clean(tmp_path):
    lore = _lore(tmp_path)
    world, server = tmp_path / "world", tmp_path / "server"
    argv = ["--lore", str(lore), "--world", str(world), "--server", str(server)]
    assert main(argv) == 0
    assert (world / "npcs" / "tess.json").exists()
    assert (server / "topics" / "big-twist.json").exists()
    # a fresh --check against just-written output is clean
    assert main(argv + ["--check"]) == 0


def test_check_detects_stale(tmp_path):
    lore = _lore(tmp_path)
    world, server = tmp_path / "world", tmp_path / "server"
    argv = ["--lore", str(lore), "--world", str(world), "--server", str(server)]
    assert main(argv) == 0
    # mutate a committed artifact -> --check must fail
    (world / "canon" / "testburg.json").write_text('{"id": "town.testburg"}\n')
    assert main(argv + ["--check"]) == 1


def test_check_detects_missing(tmp_path):
    lore = _lore(tmp_path)
    world, server = tmp_path / "world", tmp_path / "server"
    argv = ["--lore", str(lore), "--world", str(world), "--server", str(server)]
    assert main(argv) == 0
    (world / "npcs" / "tess.json").unlink()
    assert main(argv + ["--check"]) == 1


def test_invalid_bible_fails_build(tmp_path):
    lore = tmp_path / "lore"
    lore.mkdir()
    (lore / "bad.md").write_text(
        "```yaml\nid: town.a\ntype: town\nstatus: canon\nsecrecy: 0\n"
        "related: [does.not-exist]\nbody: x\n```\n")
    argv = ["--lore", str(lore), "--world", str(tmp_path / "w"),
            "--server", str(tmp_path / "s")]
    assert main(argv) == 1


def test_check_detects_orphan_file(tmp_path):
    lore = _lore(tmp_path)
    world, server = tmp_path / "world", tmp_path / "server"
    argv = ["--lore", str(lore), "--world", str(world), "--server", str(server)]
    assert main(argv) == 0
    (world / "canon" / "ghost.json").write_text('{"id": "town.ghost"}\n')
    assert main(argv + ["--check"]) == 1


def test_check_ignores_legacy_npc_files(tmp_path):
    lore = _lore(tmp_path)
    world, server = tmp_path / "world", tmp_path / "server"
    argv = ["--lore", str(lore), "--world", str(world), "--server", str(server)]
    assert main(argv) == 0
    (world / "npcs").mkdir(parents=True, exist_ok=True)
    (world / "npcs" / "legacy.json").write_text('{"id": "legacy"}\n')  # bare id
    assert main(argv + ["--check"]) == 0  # legacy file is not a build orphan