"""Plugin catalog contracts (hermes_cli/plugin_catalog.py): the in-tree seed is valid, bad entries are
skipped not raised, kill-list matching is name-or-repo, and the live catalog degrades to in-tree."""

from __future__ import annotations

import json
import os

import pytest

import yaml

from hermes_cli import plugin_catalog as pc

SHA = "38fe0fb53eff98d477f807432e965429e665ca33"


def _entry(name="good-plugin", **over):
    data = {"name": name, "repo": "https://github.com/owner/repo", "sha": SHA, "description": "d",
            "maintainer": "owner", "tier": "community", "capabilities": {"provides_tools": ["t1"]}}
    data.update(over)
    return data


def test_shipped_catalog_entries_are_all_valid_and_pinned():
    """Every file in plugin-catalog/ (minus removed.yaml) must parse — a dropped entry is a silent
    shipping regression the admission CI only catches on changed files."""
    root = pc.get_catalog_dir()
    files = [p for p in root.glob("*.yaml") if p.name != "removed.yaml"]
    entries = pc.load_catalog()
    assert len(entries) == len(files) >= 1
    assert all(pc._SHA_RE.match(e.sha) and e.repo.startswith("https://") for e in entries)
    assert all(e.install_identifier.startswith(e.repo) for e in entries)


def test_category_defaults_to_other_and_unknown_category_is_rejected(tmp_path):
    """``category`` is the browse shelf: absent → ``desktop``; a value outside CATALOG_CATEGORIES is an
    invalid entry (skipped with a warning) so a typo cannot create a phantom shelf on the site."""
    (tmp_path / "a.yaml").write_text(yaml.safe_dump(_entry("no-cat")))
    (tmp_path / "b.yaml").write_text(yaml.safe_dump(_entry("mem", category="memory")))
    (tmp_path / "c.yaml").write_text(yaml.safe_dump(_entry("typo", category="memmory")))
    entries = {e.name: e for e in pc.load_catalog(tmp_path)}
    assert set(entries) == {"no-cat", "mem"}
    assert entries["no-cat"].category == "desktop" and entries["mem"].category == "memory"
    assert entries["mem"].to_dict()["category"] == "memory"


def test_version_and_image_are_cosmetic_and_offhost_images_are_dropped(tmp_path):
    """``version``/``image`` label the pin, they never gate it: a bad value is dropped with a warning and
    the entry survives; an image off GitHub is dropped because the Desktop browser must never fetch
    from third-party hosts."""
    (tmp_path / "a.yaml").write_text(yaml.safe_dump(_entry("labelled", version="1.4.0", image="https://raw.githubusercontent.com/owner/repo/38fe0fb53eff98d477f807432e965429e665ca33/banner.png")))
    (tmp_path / "b.yaml").write_text(yaml.safe_dump(_entry("offhost", version="1.4.0 beta", image="https://evil.example/x.png")))
    entries = {e.name: e for e in pc.load_catalog(tmp_path)}
    assert set(entries) == {"labelled", "offhost"}
    assert entries["labelled"].version == "1.4.0" and entries["labelled"].image == "https://raw.githubusercontent.com/owner/repo/38fe0fb53eff98d477f807432e965429e665ca33/banner.png"
    assert entries["offhost"].version == "" and entries["offhost"].image == ""
    assert entries["labelled"].to_dict()["version"] == "1.4.0"


def test_screenshots_and_readme_are_parsed_and_readme_defaults_on(tmp_path):
    shot = "https://raw.githubusercontent.com/owner/repo/38fe0fb53eff98d477f807432e965429e665ca33/docs/1.png"
    (tmp_path / "a.yaml").write_text(yaml.safe_dump(_entry("paged", screenshots=[shot, "https://evil.example/x.png"], readme=True)))
    (tmp_path / "b.yaml").write_text(yaml.safe_dump(_entry("plain", readme=False)))
    (tmp_path / "c.yaml").write_text(yaml.safe_dump(_entry("bare")))
    entries = {e.name: e for e in pc.load_catalog(tmp_path)}
    assert entries["paged"].screenshots == [shot] and entries["paged"].readme is True
    assert entries["plain"].screenshots == [] and entries["plain"].readme is False
    assert entries["bare"].readme is True
    assert entries["paged"].to_dict()["screenshots"] == [shot] and entries["paged"].to_dict()["readme"] is True


def test_invalid_entries_are_skipped_not_raised(tmp_path):
    (tmp_path / "a.yaml").write_text(yaml.safe_dump(_entry("ok", description="café")), encoding="utf-8-sig")
    (tmp_path / "b.yaml").write_text(yaml.safe_dump(_entry("short-sha", sha="abc123")))
    (tmp_path / "c.yaml").write_text(yaml.safe_dump(_entry("http-repo", repo="http://x/y")))
    (tmp_path / "d.yaml").write_text(yaml.safe_dump(_entry("Bad Name")))
    (tmp_path / "e.yaml").write_text("- not\n- a mapping\n")
    entries = pc.load_catalog(tmp_path)
    assert [e.name for e in entries] == ["ok"]
    assert entries[0].description == "café"


def test_find_removed_matches_name_or_normalized_repo(tmp_path):
    (tmp_path / "removed.yaml").write_text(yaml.safe_dump({"removed": [
        {"name": "evil", "repo": "https://github.com/x/evil.git", "reason": "malware", "date": "2026-01-01"}]}))
    assert pc.find_removed("evil", tmp_path).reason == "malware"
    assert pc.find_removed("https://github.com/x/EVIL/", tmp_path) is not None
    assert pc.find_removed("https://github.com/x/fine", tmp_path) is None
    # Scheme/host/user spellings are not identity: every git way of naming the repo is blocked.
    for spelling in ("git@github.com:x/evil.git", "ssh://git@github.com/x/evil", "http://github.com/x/evil",
                     "https://www.github.com/x/evil/", "git://github.com/x/evil.git"):
        assert pc.find_removed(spelling, tmp_path) is not None, spelling
    assert pc.find_removed("git@gitlab.com:x/evil.git", tmp_path) is None  # different host stays distinct


@pytest.mark.parametrize("stale", [False, True])
def test_live_catalog_falls_back_to_in_tree_and_unions_removals(tmp_path, monkeypatch, stale):
    """Offline live pins expire, but a cached removal keeps blocking installs."""
    import httpx

    requests = []
    get = httpx.get

    def record_get(*args, **kwargs):
        requests.append(args)
        return get(*args, **kwargs)

    monkeypatch.setattr(httpx, "get", record_get)
    cache = tmp_path / "cache" / "plugin-catalog.json"
    monkeypatch.setattr(pc, "_live_cache_path", lambda: cache)
    monkeypatch.setattr(pc, "LIVE_CATALOG_URL", "http://127.0.0.1:9/nope")  # unreachable
    assert [e.name for e in pc.load_catalog_live()] == [e.name for e in pc.load_catalog()]

    cache.parent.mkdir(parents=True)
    cache.write_text(json.dumps({"entries": [_entry("live-only", description="café")],
                                 "removed": [{"name": "pulled-live", "reason": "cve"}]},
                                ensure_ascii=False), encoding="utf-8-sig")
    if stale:
        os.utime(cache, (1, 1))
    requests.clear()
    # The unreachable fetch above armed the failure window; a stale cache must still
    # trigger a real retry once that window has passed.
    monkeypatch.setattr(pc, "_live_fetch_failed_until", 0.0)
    entries = pc.load_catalog_live()
    if stale:
        assert [e.name for e in entries] == [e.name for e in pc.load_catalog()]
    else:
        assert [e.name for e in entries] == ["live-only"]
        assert entries[0].description == "café"
    assert bool(requests) is stale
    assert pc.find_removed("pulled-live").reason == "cve"
    cache.write_text("{", encoding="utf-8-sig")
    assert [e.name for e in pc.load_catalog_live()] == [e.name for e in pc.load_catalog()]


def _fresh_cache(tmp_path, monkeypatch, doc: dict):
    cache = tmp_path / "cache" / "plugin-catalog.json"
    cache.parent.mkdir(parents=True, exist_ok=True)
    cache.write_text(json.dumps(doc))
    monkeypatch.setattr(pc, "_live_cache_path", lambda: cache)
    monkeypatch.setattr(pc, "LIVE_CATALOG_URL", "http://127.0.0.1:9/nope")  # never reached / unreachable
    return cache


def test_newer_in_tree_pin_outranks_a_fresh_live_cache(tmp_path, monkeypatch):
    """Right after `hermes update` bumps an in-tree pin, a live cache fetched BEFORE the bump must not
    re-install the old sha: for the same entry the newer catalog wins (checkout catalog commit time vs
    the doc's generated_at). Live-only entries survive; an older checkout still defers to the doc."""
    old, new = SHA, "a" * 40
    _fresh_cache(tmp_path, monkeypatch, {"generated_at": "2026-09-22T10:00:00Z",
                                         "entries": [_entry("shared", sha=old), _entry("live-only")], "removed": []})
    monkeypatch.setattr(pc, "load_catalog", lambda catalog_dir=None: [pc.entry_from_mapping(_entry("shared", sha=new), "t")])
    bump_time = pc._live_generated_time({"generated_at": "2026-09-22T10:00:00Z"}) + 3600
    monkeypatch.setattr(pc, "in_tree_catalog_time", lambda: bump_time)
    by_name = {e.name: e for e in pc.load_catalog_live()}
    assert by_name["shared"].sha == new and "live-only" in by_name
    # Control: a checkout whose catalog predates the doc takes the live pin.
    monkeypatch.setattr(pc, "in_tree_catalog_time", lambda: bump_time - 7200)
    assert {e.name: e.sha for e in pc.load_catalog_live()}["shared"] == old


def test_live_cache_write_never_truncates_the_previous_copy(tmp_path, monkeypatch):
    """The cache is replaced atomically: a reader racing the writer (or a write that dies half-way)
    sees the whole previous document, never a truncated one."""
    cache = _fresh_cache(tmp_path, monkeypatch, {"entries": [_entry("previous")], "removed": []})
    previous = cache.read_text()

    class _Resp:
        content = json.dumps({"entries": [_entry("fresh")], "removed": []}).encode()
        def raise_for_status(self): pass
        def json(self): return json.loads(self.content)

    import httpx
    import utils
    monkeypatch.setattr(httpx, "get", lambda *a, **k: _Resp())
    pc._live_fetch_failed_until = 0.0

    def _dies(*_a, **_k):
        raise OSError("disk full")

    monkeypatch.setattr(utils, "atomic_replace", _dies)
    pc.fetch_live_catalog(force=True)  # the failed write is swallowed like any other fetch failure
    assert cache.read_text() == previous
    assert not list(cache.parent.glob("*.tmp*"))  # no leftover temp file either


def test_curated_fields_the_published_doc_lacks_come_from_the_checkout(tmp_path, monkeypatch):
    """The docs build stamps generated_at at build time, so a doc rebuilt from an older catalog is "newer"
    than a checkout that just added `onboarding`. At the same pin, a curated field the doc does not carry
    comes from the checkout; a doc that carries it (even false) decides, and a different pin never merges."""
    live = [_entry("same"), {**_entry("says-no"), "onboarding": False}, _entry("repinned", sha="b" * 40)]
    _fresh_cache(tmp_path, monkeypatch, {"generated_at": "2026-09-22T10:00:00Z", "entries": live, "removed": []})
    tree = [pc.entry_from_mapping({**_entry(n), "onboarding": True, "title": "T"}, n) for n in ("same", "says-no", "repinned")]
    monkeypatch.setattr(pc, "load_catalog", lambda catalog_dir=None: tree)
    monkeypatch.setattr(pc, "in_tree_catalog_time", lambda: 0.0)  # checkout older than the doc
    by_name = {e.name: e for e in pc.load_catalog_live()}
    assert (by_name["same"].onboarding, by_name["same"].title) == (True, "T")
    assert by_name["says-no"].onboarding is False and by_name["says-no"].title == "T"
    assert by_name["repinned"].onboarding is False and by_name["repinned"].sha == "b" * 40


def test_in_tree_catalog_time_does_not_lazy_fetch_on_treeless_clones(tmp_path, monkeypatch):
    """``in_tree_catalog_time`` dates the checkout with a pathspec'd ``git log``; the pathspec makes git
    open every commit's tree. On a treeless (``tree:0``) partial clone — the layout ``hermes update``
    produces — none of those trees exist locally, so an unrestricted probe lazy-fetches each one against
    the remote: measured 40-80 s per inventory request, past the desktop's 30s RPC limit (#125683).
    The probe must scope ``GIT_NO_LAZY_FETCH`` to itself so missing objects fail fast into the
    worktree-mtime fallback — never into network work — while a full checkout keeps resolving its time.
    This clone is never checked out, so there is no mtime to fall back to either: ``None`` all the way."""
    import shutil
    import subprocess as sp
    if shutil.which("git") is None:
        pytest.skip("git not available")
    src = tmp_path / "src"
    (src / "plugin-catalog").mkdir(parents=True)
    (src / "plugin-catalog" / "a.yaml").write_text("name: a\n")
    env = {**os.environ, "GIT_AUTHOR_NAME": "t", "GIT_AUTHOR_EMAIL": "t@t",
           "GIT_COMMITTER_NAME": "t", "GIT_COMMITTER_EMAIL": "t@t"}
    sp.run(["git", "init", "-q"], cwd=src, check=True, env=env)
    sp.run(["git", "add", "-A"], cwd=src, check=True, env=env)
    sp.run(["git", "commit", "-qm", "seed"], cwd=src, check=True, env=env)
    sp.run(["git", "config", "uploadpack.allowFilter", "true"], cwd=src, check=True, env=env)

    def local_object_types(repo):
        out = sp.run(["git", "cat-file", "--batch-all-objects", "--batch-check"], cwd=repo,
                     capture_output=True, text=True, env=env)
        return {line.split()[1] for line in out.stdout.splitlines() if line}

    dst = tmp_path / "treeless"
    # file:// (not a plain path) so the clone goes through upload-pack and honors the filter.
    sp.run(["git", "clone", "-q", "--filter=tree:0", "--no-checkout", src.as_uri(), str(dst)],
           check=True, env=env)
    if "tree" in local_object_types(dst):  # transport ignored the filter: no missing objects to protect
        pytest.skip("file:// transport did not honor --filter=tree:0")

    monkeypatch.setattr(pc, "get_catalog_dir", lambda: dst / "plugin-catalog")
    monkeypatch.setattr(pc, "_in_tree_catalog_time", -1.0)  # resolve afresh in this test
    assert pc.in_tree_catalog_time() is None
    assert "tree" not in local_object_types(dst)  # the probe lazy-fetched nothing

    monkeypatch.setattr(pc, "get_catalog_dir", lambda: src / "plugin-catalog")
    monkeypatch.setattr(pc, "_in_tree_catalog_time", -1.0)
    assert pc.in_tree_catalog_time() is not None  # a full checkout still resolves its commit time


def test_treeless_checkout_still_outranks_a_doc_fetched_before_the_bump(tmp_path, monkeypatch):
    """On the treeless layout the history probe fails fast, and ``None`` would feed the frozen-copy
    rule that lets the live doc win — re-pinning the old sha on exactly the checkouts ``hermes
    update`` just bumped. The checked-out files' mtime must stand in for the unreadable commit time
    (fresh checkout ⇒ in-tree pin wins; catalog files older than the doc ⇒ live pin wins), with no
    tree lazy-fetch anywhere (#125716 review)."""
    import shutil
    import subprocess as sp
    if shutil.which("git") is None:
        pytest.skip("git not available")
    src = tmp_path / "src"
    (src / "plugin-catalog").mkdir(parents=True)
    (src / "plugin-catalog" / "a.yaml").write_text("name: a\n")
    env = {**os.environ, "GIT_AUTHOR_NAME": "t", "GIT_AUTHOR_EMAIL": "t@t",
           "GIT_COMMITTER_NAME": "t", "GIT_COMMITTER_EMAIL": "t@t"}
    sp.run(["git", "init", "-q"], cwd=src, check=True, env=env)
    sp.run(["git", "add", "-A"], cwd=src, check=True, env=env)
    sp.run(["git", "commit", "-qm", "seed"], cwd=src, check=True, env=env)
    (src / "plugin-catalog" / "a.yaml").write_text("name: a2\n")
    sp.run(["git", "add", "-A"], cwd=src, check=True, env=env)
    sp.run(["git", "commit", "-qm", "bump"], cwd=src, check=True, env=env)
    sp.run(["git", "config", "uploadpack.allowFilter", "true"], cwd=src, check=True, env=env)

    def local_object_types(repo):
        out = sp.run(["git", "cat-file", "--batch-all-objects", "--batch-check"], cwd=repo,
                     capture_output=True, text=True, env=env)
        return {line.split()[1] for line in out.stdout.splitlines() if line}

    dst = tmp_path / "treeless"
    # file:// (not a plain path) so the clone goes through upload-pack and honors the filter.
    sp.run(["git", "clone", "-q", "--filter=tree:0", "--no-checkout", src.as_uri(), str(dst)],
           check=True, env=env)
    if "tree" in local_object_types(dst):  # transport ignored the filter: no missing objects to protect
        pytest.skip("file:// transport did not honor --filter=tree:0")
    # Checking out only fetches HEAD's trees; the seed commit's tree stays missing, so the
    # pathspec'd probe keeps failing — while the worktree files (and their mtimes) land.
    sp.run(["git", "-C", str(dst), "checkout", "-q"], check=True, env=env)
    probe = sp.run(["git", "-C", str(dst), "log", "-1", "--format=%ct", "--", "plugin-catalog"],
                   capture_output=True, env={**env, "GIT_NO_LAZY_FETCH": "1"})
    assert probe.returncode != 0  # the probe really is blind on this layout, like a real update

    old, new = SHA, "a" * 40
    _fresh_cache(tmp_path, monkeypatch, {"generated_at": "2026-09-22T10:00:00Z",
                                         "entries": [_entry("shared", sha=old)], "removed": []})
    monkeypatch.setattr(pc, "load_catalog", lambda catalog_dir=None: [pc.entry_from_mapping(_entry("shared", sha=new), "t")])
    monkeypatch.setattr(pc, "get_catalog_dir", lambda: dst / "plugin-catalog")
    monkeypatch.setattr(pc, "_in_tree_catalog_time", -1.0)  # resolve afresh: probe fails, mtime stands in
    assert {e.name: e.sha for e in pc.load_catalog_live()}["shared"] == new

    # Control: catalog files older than the doc mean the checkout is the stale side — live pin wins.
    for p in (dst / "plugin-catalog").rglob("*"):
        os.utime(p, (0, 0))
    monkeypatch.setattr(pc, "_in_tree_catalog_time", -1.0)
    assert {e.name: e.sha for e in pc.load_catalog_live()}["shared"] == old