"""PageOps content-plane unit tests (ADR-0003 / ADR-0004)."""

from pathlib import Path

import pytest

from coulomb_social.apps.spaces import pageops


@pytest.fixture
def content_root(tmp_path, settings):
    root = tmp_path / "content"
    settings.CONTENT_ROOT = str(root)
    return root


def test_write_read_list_page(content_root):
    pageops.init_space_content("lab", title="Lab", abstractor="Research", visual="assets/c.jpg")
    doc = pageops.write_page(
        "lab",
        "notes",
        title="Notes",
        abstractor="Scratch",
        visual="assets/n.jpg",
        body="# Notes\n\nHello.\n",
    )
    assert doc.exists
    assert doc.title == "Notes"
    assert doc.abstractor == "Scratch"
    assert "Hello" in doc.body

    pages = pageops.list_pages("lab")
    slugs = [p.slug for p in pages]
    assert slugs[0] == "index"
    assert "notes" in slugs

    path = Path(doc.path)
    assert path.is_file()
    text = path.read_text(encoding="utf-8")
    assert text.startswith("---\n")
    assert 'title: "Notes"' in text or "title: Notes" in text or 'title: "Notes"' in text


def test_copy_page_same_space(content_root):
    pageops.init_space_content("lab", title="Lab")
    pageops.write_page("lab", "alpha", title="Alpha", body="Body A\n")
    copy = pageops.copy_page("lab", "alpha", "lab", "alpha-copy")
    assert copy.slug == "alpha-copy"
    assert copy.title == "Alpha (copy)"
    assert "Body A" in copy.body
    assert pageops.read_page("lab", "alpha").exists


def test_transfer_page(content_root):
    pageops.init_space_content("src", title="Src")
    pageops.init_space_content("dst", title="Dst")
    pageops.write_page("src", "moved", title="Moved", abstractor="A", body="X\n")
    doc = pageops.transfer_page("src", "moved", "dst", "moved")
    assert doc.exists
    assert doc.title == "Moved"
    assert not pageops.read_page("src", "moved").exists
    assert pageops.read_page("dst", "moved").exists


def test_cannot_delete_or_transfer_index(content_root):
    pageops.init_space_content("lab", title="Lab")
    with pytest.raises(pageops.PageOpsError):
        pageops.delete_page("lab", "index")
    with pytest.raises(pageops.PageOpsError):
        pageops.transfer_page("lab", "index", "other")


def test_copy_relative_visual_asset(content_root):
    pageops.init_space_content("lab", title="Lab")
    assets = pageops.assets_dir("lab")
    assets.mkdir(parents=True, exist_ok=True)
    (assets / "cover.png").write_bytes(b"\x89PNG\r\n")
    pageops.write_page(
        "lab",
        "with-pic",
        title="Pic",
        visual="assets/cover.png",
        body="pic\n",
    )
    copy = pageops.copy_page("lab", "with-pic", "lab", "with-pic-copy")
    assert copy.visual.startswith("assets/")
    assert (pageops.space_dir("lab") / copy.visual).is_file()