"""``hermes plugins install``: dependency/env consent, the atomic clone-scan-publish installer core, and
the dashboard/TUI non-interactive install.

Sibling of :mod:`hermes_cli.plugins_cmd` (the facade re-exports the names other modules use and is
imported late here, never at module level).
"""

from __future__ import annotations

import logging
import os
import sys
import tempfile
from pathlib import Path
from typing import Any, Optional

from hermes_cli.cli_output import line_input

logger = logging.getLogger(__name__)


def _pc():
    """The facade, read at call time: tests patch ``plugins_cmd.<name>`` and sibling calls must see it."""
    from hermes_cli import plugins_cmd
    return plugins_cmd


def _install_plugin_python_deps(
    manifest: dict, target: Path, console
) -> tuple[bool, Optional[str]]:
    """Consent gate for plugin python deps (settled 2026-09-02; C13 rework).

    Node sidecar: y/n prompt → ``npm ci`` into the plugin's OWN
    node_modules (separate question, failure never blocks enable).
    Python deps: NO resolution here — the resolve runs inside the ONE
    admission transaction when the enable commits
    (:func:`_admit_and_save_plugin_sets`), so the environment and the
    config always change together or not at all. Returns (consented,
    reason): consented=True when the user accepted (or no prompt was
    needed); a decline/skip returns False and NOTHING is installed.
    Never raises — the caller keeps the plugin installed-but-disabled.
    """
    from pm.plugin_declarations import read_python_declaration

    try:
        declaration = read_python_declaration(target)
        deps = declaration.install_requirements
    except Exception as exc:
        return False, f"invalid Python dependency declaration: {exc}"
    has_python = declaration.is_member
    has_package_json = (target / "package.json").is_file()
    if not has_python and not has_package_json:
        return True, None  # no declared deps at all

    # Node sidecar (package.json): the npm ci executor — separate consent
    # question, same try-then-enable posture. Failure never blocks the
    # python path below.
    node_reason = None
    if has_package_json:
        console.print(f"\n[bold]{manifest.get('name', 'this plugin')}[/bold] declares Node dependencies (package.json).")
        if sys.stdin.isatty() and sys.stdout.isatty():
            try:
                node_answer = input(
                    "  Install them into the plugin's own node_modules now? [y/N]: "
                ).strip().lower()
            except (EOFError, KeyboardInterrupt):
                node_answer = ""
        else:
            node_answer = ""
        if node_answer in {"y", "yes"}:
            from pm.workspace import install_node_sidecar

            node_reason = install_node_sidecar(target, explicit=True)
            if node_reason:
                console.print(f"[yellow]⚠[/yellow] Node deps: {node_reason}")
        else:
            console.print("[dim]Skipped Node deps — run `hermes plugins install` again to retry.[/dim]\n")

    if not has_python:
        return True, None
    return _consent_python_deps(manifest.get("name", "this plugin"), deps, console)


def _consent_python_deps(plugin_name: str, deps: tuple[str, ...], console) -> tuple[bool, Optional[str]]:
    """The y/N gate for Python deps entering the shared environment — install,
    reinstall AND an update that declares new ones all pass through here.
    Returns (consented, reason); never raises."""
    console.print(
        f"\n[bold]{plugin_name}[/bold] declares Python dependencies:"
    )
    if deps:
        for dep in deps:
            console.print(f"  - {dep}")
    else:
        console.print("  - (declared in its pyproject.toml)")

    # A decline or non-interactive invocation leaves the new plugin disabled.
    if not (sys.stdin.isatty() and sys.stdout.isatty()):
        console.print(
            "[dim]Non-interactive install — skipping dependency install. "
            "Run `hermes plugins enable` when ready to prepare them.[/dim]\n"
        )
        return False, "dependency install skipped (non-interactive)"
    try:
        answer = input(
            "  Prepare these with Hermes through PM now? [y/N]: "
        ).strip().lower()
    except (EOFError, KeyboardInterrupt):
        answer = ""
    if answer not in {"y", "yes"}:
        console.print(
            "[dim]Skipped — run `hermes plugins enable` when ready "
            "to prepare them.[/dim]\n"
        )
        return False, "dependency install declined"

    # Consent only — the python-deps resolution itself runs inside the ONE
    # admission transaction at enable-commit time (C13): env + config move
    # together or not at all.
    return True, None


def _python_dependency_summary(target: Path, warnings: list[str]) -> list[str]:
    """Read dashboard dependency details; publication and admission own installation."""
    from pm.plugin_declarations import read_python_declaration

    try:
        return list(read_python_declaration(target).install_requirements)
    except Exception as exc:
        warnings.append(f"Could not read Python dependencies: {exc}")
        return []


def _prompt_plugin_env_vars(manifest: dict, console) -> None:
    """Prompt for unset ``requires_env`` variables and save the answers to the user's ``.env``."""
    missing = _pc()._missing_env_specs(manifest)
    if not missing:
        return
    from hermes_cli.config import save_env_value
    from hermes_constants import display_hermes_home
    plugin_name = manifest.get("name", "this plugin")
    console.print(f"\n[bold]{plugin_name}[/bold] requires the following environment variables:\n")
    for spec in missing:
        name = spec["name"]
        desc = spec.get("description", "")
        url = spec.get("url", "")
        console.print(f"  {name}" + (f" — {desc}" if desc else ""))
        if url:
            console.print(f"  [dim]Get yours at: {url}[/dim]")
        try:
            value = (_pc().masked_secret_prompt if spec.get("secret", False) else line_input)(f"  {name}: ").strip()
        except (EOFError, KeyboardInterrupt):
            console.print(f"\n[dim]  Skipped (you can set these later in {display_hermes_home()}/.env)[/dim]")
            return

        if value:
            save_env_value(name, value)
            os.environ[name] = value
            console.print(f"  [green]✓[/green] Saved to {display_hermes_home()}/.env")
        else:
            console.print(f"  [dim]  Skipped (set {name} in {display_hermes_home()}/.env later)[/dim]")

    console.print()


def _display_after_install(plugin_dir: Path, identifier: str) -> None:
    """Show after-install.md if it exists, otherwise a default message."""
    from rich.markdown import Markdown
    from rich.panel import Panel
    console = _pc()._console()
    after_install = plugin_dir / "after-install.md"
    if after_install.exists():
        body, title = Markdown(after_install.read_text(encoding="utf-8-sig")), None
    else:
        body = f"[green bold]Plugin installed:[/] {identifier}\n[dim]Location:[/] {plugin_dir}"
        title = "✓ Installed"
    console.print()
    console.print(Panel(body, border_style="green", title=title, expand=False))
    console.print()


def _check_manifest_version(manifest: dict, plugin_name: str) -> None:
    """Reject manifests declaring a newer ``manifest_version`` than this installer supports."""
    from pm.plugin_declarations import manifest_version_error

    reason = manifest_version_error(manifest, plugin_name)
    if reason:
        from hermes_cli.config import recommended_update_command
        raise _pc().PluginOperationError(f"{reason} Run {recommended_update_command()} to update Hermes.")


def _read_manifest_for_install(plugin_dir: Path) -> dict:
    """A candidate's unreadable or malformed manifest must stop publication."""
    native = _pc()._native_manifest_file(plugin_dir)
    if native is not None:
        try:
            manifest = _pc()._load_yaml_manifest(native)
        except Exception as exc:
            raise _pc().PluginOperationError(f"Could not read plugin manifest {native}: {exc}") from exc
        if not isinstance(manifest, dict):
            raise _pc().PluginOperationError(f"Plugin manifest must be a mapping: {native}")
        return manifest
    if not _pc()._has_portable_manifest(plugin_dir):
        return {}
    try:
        from hermes_cli.agent_plugins import read_agent_plugin_manifest
        manifest, diagnostics = read_agent_plugin_manifest(plugin_dir)
    except Exception as exc:
        raise _pc().PluginOperationError(f"Portable plugin manifest validation failed: {exc}") from exc
    for diagnostic in diagnostics:
        logger.warning("Agent Plugin install: %s", diagnostic.message)
    return manifest


def _probe_readable(path: Path) -> None:
    """Raise ``OSError`` unless *path* can actually be listed (dir) or opened for reading (file)."""
    if path.is_dir():
        os.listdir(path)
    else:
        with open(path, "rb"):
            pass


def _ensure_tree_readable(root: Path, plugins_dir: Path) -> None:
    """Refuse to ship a tree Hermes cannot read back. A clone can land unreadable (Windows ACL
    inheritance -> WinError 5, a mode-000 file) and discovery would then skip the plugin forever
    (#111804); repair ``u+rX`` where the OS supports it, otherwise fail before anything moves."""
    paths = [root]
    for dirpath, dirnames, filenames in os.walk(root):
        paths.extend(Path(dirpath) / name for name in (*dirnames, *filenames))
    for path in paths:
        try:
            _probe_readable(path)
            continue
        except OSError:
            if os.name != "nt":  # chmod only toggles the read-only bit on Windows; ACLs need icacls
                try:
                    os.chmod(path, os.stat(path).st_mode | (0o500 if path.is_dir() else 0o400))
                except OSError:
                    pass
        try:
            _probe_readable(path)
        except OSError as exc:
            fix = (f'icacls "{plugins_dir}" /grant:r "%USERNAME%":(OI)(CI)F /T' if os.name == "nt"
                   else f"chmod -R u+rX {plugins_dir}")
            raise _pc().PluginOperationError(
                f"Installed file {path.relative_to(root)} is not readable ({exc.strerror or exc}); "
                f"nothing was installed. Fix permissions on {plugins_dir} (e.g. `{fix}`) and retry."
            ) from exc


def _refuse_unavailable_portable_plugin(plugin_name: str, tree: Path) -> None:
    if not (tree / "plugin.json").is_file():
        return
    from hermes_cli.agent_plugins import load_agent_plugin
    from hermes_platform.resolver.availability import availability

    try:
        package = load_agent_plugin(tree, tree.parent / ".hermes-install-data")
    except ValueError as exc:
        raise _pc().PluginOperationError(f"Plugin '{plugin_name}' is unavailable: {exc}.") from exc
    for server_name, server_decl in package.server_declarations.items():
        result = availability(server_decl.declaration)
        if result.offerable:
            continue
        found = f", found version {result.version}" if result.version else ""
        raise _pc().PluginOperationError(
            f"Plugin '{plugin_name}' server '{server_name}' is unavailable: {result.state}{found}."
        )


def _install_plugin_core(
    identifier: str,
    *,
    force: bool,
    ref: Optional[str] = None,
    scan_decision_cb=None,
    reviewed_pin: Optional[str] = None,
    python_deps: bool = True,
    catalog: Optional[dict] = None,
    allow_removed: bool = False,
    before_swap=None,
) -> tuple[Path, dict, str]:
    """Clone a Git plugin and atomically record its source and exact revision.

    *reviewed_pin* is the curated-catalog sha for this install; the scan trusts the tree
    only when the checked-out revision is exactly that sha (an annotated-tag pin is peeled to
    its commit first — HEAD can only ever be the commit). *python_deps* False refuses active
    replacements; it never bypasses PM dependency admission. *catalog*
    (``{"name", "repo", "tier", "pin"}``) is recorded on the install-metadata record with the
    checked-out sha — provenance lives OUTSIDE the plugin tree, so a repo cannot forge it;
    its ``pin`` is kept only when the checkout satisfies it (a ``--ref`` install is off-pin).
    *allow_removed* records that the user knowingly bypassed the kill list.
    *before_swap(manifest, tree)* runs on the manifest-checked clone BEFORE the security scan, so
    the single scan and portable-package check admit the merged tree (file-count/size limits
    included). It may return the relative paths it merged in, which a scan block then attributes,
    and may raise :class:`PluginOperationError` to abort (re-pin consent)."""
    requested_revision = _pc()._normalize_exact_revision(ref) if ref is not None else None
    try:
        git_url, subdir = _pc()._resolve_git_url(identifier)
    except ValueError as e:
        raise _pc().PluginOperationError(str(e)) from e

    plugins_dir = _pc()._plugins_dir()
    source = _pc()._canonical_source(git_url, subdir)
    old_metadata = _pc()._read_install_metadata()

    # Reinstalling the same pinned source retains its pin, even if its plugin
    # directory was manually removed. Moving a pin requires an explicit --ref.
    if requested_revision is None:
        pins = [e for e in old_metadata.values() if e.get("source") == source and e.get("pinned") is True]
        if len(pins) == 1 and isinstance(pins[0].get("revision"), str):
            requested_revision = _pc()._normalize_exact_revision(pins[0]["revision"])

    with tempfile.TemporaryDirectory(prefix=".install-", dir=plugins_dir) as tmp:
        tmp_clone = Path(tmp) / "plugin"
        installed_revision = _pc()._clone_plugin_repo(tmp_clone, git_url, requested_revision, subdir)
        git_exe = _pc()._resolve_git_executable()
        at_reviewed_pin = bool(reviewed_pin) and installed_revision == (
            _pc()._git_resolve_commit(tmp_clone, git_exe, reviewed_pin) if git_exe and reviewed_pin else reviewed_pin)
        tmp_target = _pc()._resolve_subdir_within(tmp_clone, subdir) if subdir else tmp_clone
        _ensure_tree_readable(tmp_target, plugins_dir)
        manifest = _read_manifest_for_install(tmp_target)
        plugin_name = manifest.get("name") or (
            subdir.rstrip("/").rsplit("/", 1)[-1] if subdir else _pc()._repo_name_from_url(git_url))
        try:
            target = _pc()._sanitize_plugin_name(plugin_name, plugins_dir)
        except ValueError as e:
            raise _pc().PluginOperationError(str(e)) from e
        _check_manifest_version(manifest, plugin_name)
        # A callback may merge user-owned state into the candidate tree; run it first so one scan
        # admits the final bytes.
        merged = before_swap(manifest, tmp_target) if before_swap is not None else None
        # Scan BEFORE anything is moved into place; raises PluginScanBlocked when blocked.
        _pc()._scan_merged_tree(tmp_target, identifier, merged, force=force, scan_decision_cb=scan_decision_cb,
                                reviewed_pin=at_reviewed_pin)
        if not python_deps:
            from pm.workspace import enabled_plugin_dirs

            if target.resolve() in enabled_plugin_dirs(installing=target):
                raise _pc().PluginOperationError(
                    "--no-deps cannot replace an active plugin. Retry without --no-deps; "
                    "PM must prepare its dependencies before publication.")
        _refuse_unavailable_portable_plugin(plugin_name, tmp_target)

        if target.exists() and not force:
            raise _pc().PluginOperationError(
                f"Plugin '{plugin_name}' already exists. Use force reinstall "
                f"or run `hermes plugins update {plugin_name}`.")
        prior = old_metadata.get(plugin_name)
        if target.exists() and requested_revision is None and isinstance(prior, dict) and prior.get("pinned") is True:
            raise _pc().PluginOperationError(
                f"Plugin '{plugin_name}' is pinned. Reinstall it with an explicit "
                "--ref <40-character commit SHA> to change its source or revision.")

        record: dict[str, object] = {
            "pinned": requested_revision is not None,
            "revision": installed_revision,
            "source": source,
        }
        # Saved update_url tag (settled: claims vs provenance): the
        # manifest's update_url is COPIED into the row at install. Check
        # time compares manifest vs tag; a mismatch is needs-fixing and
        # only `hermes plugins trust-update-url` moves the tag.
        if manifest.get("update_url"):
            from hermes_cli.plugins_updates import https_update_url
            try:
                record["update_url"] = https_update_url(manifest["update_url"])
            except ValueError as exc:
                raise _pc().PluginOperationError(f"Plugin '{plugin_name}' {exc}") from exc
        if catalog:
            # ``sha`` = the commit checked out; ``pin`` = the reviewed catalog sha it satisfies (the
            # annotated-tag object for a tag pin), empty when installed off-pin via ``--ref``.
            record["catalog"] = {
                **catalog,
                "sha": installed_revision,
                "pin": reviewed_pin if at_reviewed_pin else "",
            }
            from hermes_cli.plugins_cmd_catalog import write_catalog_sidecar_record
            write_catalog_sidecar_record(tmp_target, catalog, installed_revision)
        if allow_removed:
            record["allow_removed"] = True
        new_metadata = {**old_metadata, plugin_name: record}
        from hermes_cli.plugins_transaction import publish_plugin

        try:
            publish_plugin(tmp_target, target, old_metadata, new_metadata, require_consent=True)
        except Exception as exc:
            raise _pc().PluginOperationError(f"Plugin '{plugin_name}' was not published: {exc}") from exc

    if not _pc()._looks_like_plugin_dir(target):
        logger.warning("%s has no plugin.yaml / __init__.py; may not be a valid plugin", plugin_name)
    _pc()._copy_example_files(target, _pc()._console())
    installed_manifest = _pc()._read_manifest(target)
    return target, installed_manifest, installed_manifest.get("name") or target.name


def cmd_install(
    identifier: str,
    force: bool = False,
    enable: Optional[bool] = None,
    ref: Optional[str] = None,
    allow_removed: bool = False,
    no_deps: bool = False,
) -> None:
    """Install a plugin from the curated catalog (bare name), a Git URL, or owner/repo shorthand.

    A catalog hit installs the reviewed pinned SHA and records catalog membership in the shared install
    metadata. An explicit different ``--ref`` is a custom pin. URLs/shorthand are custom sources. Every
    install is checked against the catalog kill list unless *allow_removed*.
    *enable* None prompts "Enable now? [y/N]"; True/False skip the prompt.
    """
    from hermes_cli import plugins_cmd_catalog as catalog
    console = _pc()._console()
    entry = None
    if catalog.looks_like_catalog_name(identifier):
        entry = catalog.resolve_catalog_name(identifier, console)
        identifier = entry.install_identifier
        console.print(f"[bold]{entry.name}[/bold] [cyan]\\[{entry.tier}][/cyan] [dim]pinned @ {entry.sha[:8]}[/dim]")
        console.print(catalog.entry_capability_summary(entry))
    else:
        console.print("[yellow]Warning:[/yellow] custom (unreviewed) source — not from the Hermes catalog.")
    if allow_removed:
        console.print(
            "[bold red]WARNING:[/bold red] [red]--allow-removed set — skipping the catalog kill-list check. "
            "This plugin may have been removed for security reasons.[/red]")

    try:
        git_url, _subdir = _pc()._resolve_git_url(identifier)
        if not allow_removed:
            catalog.raise_if_removed(identifier, git_url, *((entry.name,) if entry else ()))
    except (ValueError, _pc().PluginOperationError) as e:
        _pc()._fail(console, f"[red]Error:[/red] {e}")
    if git_url.startswith(("http://", "file://")):
        console.print(
            "[yellow]Warning:[/yellow] Using insecure/local URL scheme. "
            "Consider using https:// or git@ for production installs.")

    console.print(f"[dim]Cloning {git_url}{f' (subdir: {_subdir})' if _subdir else ''}...[/dim]")

    def _interactive_scan_decision(scan_result) -> bool:
        """Prompt the user to accept a caution-verdict plugin."""
        from tools.plugin_guard import format_scan_report
        console.print()
        console.print("[yellow]⚠ Security scan flagged this plugin:[/yellow]")
        console.print(format_scan_report(scan_result))
        return _pc()._is_tty() and _pc()._ask_yes("  Install anyway? Only continue if you trust the source. [y/N]: ")

    try:
        if entry is not None:
            target, installed_manifest, installed_name = catalog.install_catalog_entry(
                entry, force=force, ref=ref, allow_removed=allow_removed, scan_decision_cb=_interactive_scan_decision,
                python_deps=not no_deps)
        else:
            target, installed_manifest, installed_name = _pc()._install_plugin_core(
                identifier, force=force, ref=ref, scan_decision_cb=_interactive_scan_decision,
                python_deps=not no_deps, allow_removed=allow_removed)
    except _pc().PluginOperationError as e:
        _pc()._fail(console, f"[red]{'Blocked' if isinstance(e, _pc().PluginScanBlocked) else 'Error'}:[/red] {e}")
    if not _pc()._looks_like_plugin_dir(target):
        console.print(
            f"[yellow]Warning:[/yellow] {installed_name} doesn't contain plugin.yaml, "
            f"plugin.json, or __init__.py. It may not be a valid Hermes plugin.")
    _prompt_plugin_env_vars(installed_manifest, console)

    from pm.workspace import enabled_plugin_dirs

    # Active replacements settled consent against the staged tree before PM
    # prepared or published it. Do not present a second, ineffective veto.
    already_active = target.resolve() in enabled_plugin_dirs()
    should_enable = False if no_deps else enable
    if no_deps:
        console.print("[dim]--no-deps: skipping dependency consent; the plugin stays disabled.[/dim]")
    if should_enable is None and not already_active:
        should_enable = _pc()._is_tty() and _pc()._ask_yes(f"  Enable '{installed_name}' now? [y/N]: ")
    deps_ok, deps_reason = (True, None)
    if should_enable and not already_active:
        deps_ok, deps_reason = _install_plugin_python_deps(installed_manifest, target, console)

    _pc()._display_after_install(target, identifier)

    # ONE admission transaction for the enable (C13): resolve the candidate
    # union (enabled members + this target) and commit the config in the
    # same step — env and config change together or not at all. No
    # duplicate sync here: nothing was resolved before this point.
    if should_enable and not deps_ok:
        # Consent declined/skipped: nothing was installed or changed, so
        # enabling is refused without touching config or environment.
        console.print(
            f"[red]✗[/red] Cannot enable [bold]{installed_name}[/bold]: "
            f"{deps_reason}"
        )
        console.print(
            "[dim]The plugin stays installed but disabled; re-enable "
            "after resolving the conflict.[/dim]"
        )
        should_enable = False

    if already_active:
        console.print("[dim]Replacement installed; plugin selection was not changed.[/dim]")
    elif should_enable:
        from hermes_cli.plugins_admission import AdmissionRefused

        try:
            _pc()._set_plugin_enabled(installed_name, enable=True, console=console)
        except AdmissionRefused:
            console.print(
                "[dim]The plugin stays installed but disabled; re-enable "
                "after resolving the conflict.[/dim]"
            )
        else:
            console.print(
                f"[green]✓[/green] Plugin [bold]{installed_name}[/bold] enabled.",
            )
    else:
        console.print(
            f"[dim]Plugin installed but not enabled. "
            f"Run `hermes plugins enable {installed_name}` to activate.[/dim]")

    # Non-interactive installs and declines leave declared capabilities ungranted (fail closed).
    declared_caps = _pc()._declared_capabilities_from_manifest(installed_manifest, installed_name)
    if declared_caps:
        _pc()._run_capability_consent(console, installed_name, declared_caps, context="install")
    if enable:
        # Loads it into the running gateway now (handlers live) or says what needs a restart (#87770).
        from hermes_cli.plugins_activation import activate_plugin_now, activation_hint
        console.print(f"[dim]{activation_hint(activate_plugin_now(installed_name, in_process=False))}[/dim]")
    console.print()


def dashboard_install_plugin(
    identifier: str, *, force: bool, enable: bool, catalog_name: Optional[str] = None,
    ref: Optional[str] = None,
) -> dict[str, Any]:
    """Non-interactive install for the dashboard/TUI. *catalog_name* installs a curated entry at its
    pinned SHA (identifier may be empty); *ref* pins a custom source to one full commit SHA (same
    contract as ``--ref``); every path enforces the kill list (no GUI bypass)."""
    from hermes_cli import plugins_cmd_catalog as catalog
    warnings: list[str] = []
    entry = None
    if catalog_name:
        entry = catalog.get_live_catalog_entry(catalog_name)
        if entry is None:
            return {"ok": False, "error": f"'{catalog_name}' is not in the Hermes plugin catalog."}
        identifier = entry.install_identifier
    else:
        warnings.append("Custom (unreviewed) source — not from the Hermes catalog.")
    try:
        git_url = _pc()._resolve_git_url(identifier)[0]
        if git_url.startswith(("http://", "file://")):
            warnings.append("Insecure URL scheme; prefer https:// or git@ for production installs.")
        catalog.raise_if_removed(identifier, git_url, *((entry.name,) if entry else ()))
    except ValueError:
        pass
    except _pc().PluginOperationError as exc:
        return {"ok": False, "error": str(exc)}
    try:
        if entry is not None:
            target, installed_manifest, installed_name = catalog.install_catalog_entry(
                entry, force=force, allow_removed=False)
        else:
            target, installed_manifest, installed_name = _pc()._install_plugin_core(
                identifier, force=force, ref=(ref or "").strip() or None)
    except _pc().PluginScanBlocked as exc:
        fields = ("pattern_id", "severity", "category", "file", "line", "description")
        return {
            "ok": False, "error": str(exc), "scan_blocked": True,
            "scan_verdict": getattr(exc.scan_result, "verdict", "dangerous"),
            "scan_findings": [
                {k: getattr(f, k) for k in fields}
                for f in (exc.scan_result.findings if exc.scan_result is not None else ())
            ],
        }
    except _pc().PluginOperationError as exc:
        return {"ok": False, "error": str(exc)}

    if enable:
        from hermes_cli.plugins_admission import AdmissionRefused

        try:
            _pc()._set_plugin_enabled(installed_name, enable=True)
        except AdmissionRefused as exc:
            return {
                "ok": False, "error": f"enable refused: {exc}",
                "plugin_name": installed_name, "enabled": False,
            }
    deps = _pc()._python_dependency_summary(target, warnings)
    ap = target / "after-install.md"
    # Deps first, then load: the plugin activates in this process (TUI/Desktop server subscribers see it)
    # and in the running gateway; ``activation`` says what is live now vs next session (#87770).
    from hermes_cli.plugins_activation import activate_plugin_now
    activated = activate_plugin_now(installed_name) if enable else {
        "gateway_reloaded": False, "activation": None, "restart_required": False}
    return {
        "ok": True, "plugin_name": installed_name, "warnings": warnings,
        "python_dependencies": deps,
        "missing_env": [s["name"] for s in _pc()._missing_env_specs(installed_manifest)],
        "after_install_path": str(ap) if ap.exists() else None, "enabled": enable, **activated,
    }