"""Tests for the Telegram inline command picker (@botname <query>).

Covers the PTB-free logic module ``plugins/platforms/telegram/inline_picker``
(catalog collection, ranking, pagination) and the adapter's
``_handle_inline_query`` (auth gate, personal caching, empty-answer on
deny). The picker exists because the BotCommand menu is capped (60-slot
Hermes default / 100 API max, ~4KB payload) while inline mode is uncapped —
every command and skill must be reachable through it.
"""

from types import SimpleNamespace
from unittest.mock import AsyncMock, MagicMock, patch

import pytest

from gateway.config import Platform, PlatformConfig
from plugins.platforms.telegram.inline_picker import (
    PAGE_SIZE,
    build_inline_results,
    collect_inline_catalog,
    filter_catalog,
)

# ---------------------------------------------------------------------------
# Logic module — no PTB required
# ---------------------------------------------------------------------------

class TestFilterCatalog:
    CATALOG = [
        {"name": "help", "description": "Show available commands"},
        {"name": "plan", "description": "Write a markdown implementation plan"},
        {"name": "plugin_tools", "description": "List plugin tools"},
        {"name": "songsee", "description": "Audio spectrograms and planning aids"},
    ]

    def test_empty_term_returns_everything_in_order(self):
        assert filter_catalog(self.CATALOG, "") == self.CATALOG
        assert filter_catalog(self.CATALOG, "   ") == self.CATALOG

    def test_prefix_beats_substring_beats_description(self):
        ranked = filter_catalog(self.CATALOG, "plan")
        names = [i["name"] for i in ranked]
        # prefix match first, then description matches ("...plan" in
        # plugin_tools description? no — songsee mentions planning).
        assert names[0] == "plan"
        assert "songsee" in names  # description hit ranks after name hits

    def test_hyphen_underscore_equivalent(self):
        catalog = [{"name": "gif_search", "description": "Find GIFs"}]
        assert filter_catalog(catalog, "gif-se")[0]["name"] == "gif_search"

    def test_leading_slash_stripped(self):
        assert filter_catalog(self.CATALOG, "/plan")[0]["name"] == "plan"

    def test_no_match_returns_empty(self):
        assert filter_catalog(self.CATALOG, "zzzznope") == []

class TestBuildInlineResults:
    def _fake_catalog(self, n):
        return [
            {"name": f"cmd-{i:03d}", "description": f"desc {i}"} for i in range(n)
        ]

    def test_first_page_and_next_offset(self):
        with patch(
            "plugins.platforms.telegram.inline_picker.collect_inline_catalog",
            return_value=self._fake_catalog(PAGE_SIZE + 10),
        ):
            results, next_offset = build_inline_results("", offset="")
        assert len(results) == PAGE_SIZE
        assert next_offset == str(PAGE_SIZE)

    def test_last_page_signals_stop_with_empty_offset(self):
        with patch(
            "plugins.platforms.telegram.inline_picker.collect_inline_catalog",
            return_value=self._fake_catalog(PAGE_SIZE + 10),
        ):
            results, next_offset = build_inline_results("", offset=str(PAGE_SIZE))
        assert len(results) == 10
        assert next_offset == ""

    def test_args_after_first_token_carry_into_message_text(self):
        with patch(
            "plugins.platforms.telegram.inline_picker.collect_inline_catalog",
            return_value=[{"name": "plan", "description": "Plan mode"}],
        ):
            results, _ = build_inline_results("plan migrate auth to OIDC")
        assert results[0]["message_text"] == "/plan migrate auth to OIDC"
        assert results[0]["title"] == "/plan"

    def test_bare_query_sends_bare_command(self):
        with patch(
            "plugins.platforms.telegram.inline_picker.collect_inline_catalog",
            return_value=[{"name": "plan", "description": "Plan mode"}],
        ):
            results, _ = build_inline_results("plan")
        assert results[0]["message_text"] == "/plan"

    def test_garbage_offset_treated_as_zero(self):
        with patch(
            "plugins.platforms.telegram.inline_picker.collect_inline_catalog",
            return_value=self._fake_catalog(3),
        ):
            results, _ = build_inline_results("", offset="not-a-number")
        assert len(results) == 3

    def test_result_ids_unique_across_pages(self):
        catalog = self._fake_catalog(PAGE_SIZE * 2)
        with patch(
            "plugins.platforms.telegram.inline_picker.collect_inline_catalog",
            return_value=catalog,
        ):
            page1, off = build_inline_results("", offset="")
            page2, _ = build_inline_results("", offset=off)
        ids = {r["id"] for r in page1} | {r["id"] for r in page2}
        assert len(ids) == PAGE_SIZE * 2

class TestCollectInlineCatalog:
    def test_catalog_is_uncapped_and_includes_all_skills(self, tmp_path, monkeypatch):
        """The whole point: unlike the 60-slot menu, EVERY skill appears."""
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        skills = tmp_path / "skills"
        names = [f"filler-{i:02d}" for i in range(70)] + ["zzz-last-skill"]
        for n in names:
            d = skills / n
            d.mkdir(parents=True)
            (d / "SKILL.md").write_text(
                f"---\nname: {n}\ndescription: test skill {n}\n---\n# {n}\n"
            )
        # SKILLS_DIR is resolved at import time — in a full-suite run it
        # points at an earlier test's HERMES_HOME, so pin it (both the
        # scanner in agent.skill_commands and the prefix allowlist in
        # _collect_gateway_skill_entries import it from tools.skills_tool).
        from tools import skills_tool

        monkeypatch.setattr(skills_tool, "SKILLS_DIR", skills)
        catalog = collect_inline_catalog()
        got = {i["name"] for i in catalog}
        # Late-alphabet skill that the capped menu would trim is present.
        assert "zzz_last_skill" in got or "zzz-last-skill" in got
        # All 71 skills present (names are telegram-sanitized).
        assert sum(1 for n in got if n.startswith("filler_")) == 70
        # Core commands present too.
        assert "help" in got and "plan" in got

    def test_no_duplicate_names(self, tmp_path, monkeypatch):
        monkeypatch.setenv("HERMES_HOME", str(tmp_path))
        (tmp_path / "skills").mkdir()
        catalog = collect_inline_catalog()
        names = [i["name"] for i in catalog]
        assert len(names) == len(set(names))

# ---------------------------------------------------------------------------
# Adapter handler — telegram mock from tests/gateway/conftest.py
# ---------------------------------------------------------------------------

def _make_adapter(authorized=True):
    from plugins.platforms.telegram.adapter import TelegramAdapter

    adapter = object.__new__(TelegramAdapter)
    adapter.platform = Platform.TELEGRAM
    adapter.config = PlatformConfig(enabled=True, token="***", extra={})
    adapter._is_callback_user_authorized = MagicMock(return_value=authorized)
    return adapter

def _inline_update(query="", offset="", user_id=42):
    inline_query = SimpleNamespace(
        query=query,
        offset=offset,
        from_user=SimpleNamespace(id=user_id, username="tester"),
        answer=AsyncMock(),
    )
    return SimpleNamespace(inline_query=inline_query)

@pytest.mark.asyncio
async def test_inline_query_authorized_answers_with_articles():
    adapter = _make_adapter(authorized=True)
    update = _inline_update(query="plan")
    with patch(
        "plugins.platforms.telegram.inline_picker.collect_inline_catalog",
        return_value=[{"name": "plan", "description": "Plan mode"}],
    ):
        await adapter._handle_inline_query(update, None)
    update.inline_query.answer.assert_awaited_once()
    args, kwargs = update.inline_query.answer.call_args
    assert len(args[0]) == 1
    assert kwargs["is_personal"] is True
    assert kwargs["next_offset"] == ""

@pytest.mark.asyncio
async def test_inline_query_unauthorized_gets_empty_results():
    adapter = _make_adapter(authorized=False)
    update = _inline_update(query="plan")
    await adapter._handle_inline_query(update, None)
    update.inline_query.answer.assert_awaited_once()
    args, kwargs = update.inline_query.answer.call_args
    assert args[0] == []
    assert kwargs["is_personal"] is True

@pytest.mark.asyncio
async def test_inline_query_missing_user_denied():
    adapter = _make_adapter(authorized=True)
    update = _inline_update(query="plan")
    update.inline_query.from_user = None
    await adapter._handle_inline_query(update, None)
    args, _kwargs = update.inline_query.answer.call_args
    assert args[0] == []

@pytest.mark.asyncio
async def test_inline_query_answer_failure_is_swallowed():
    adapter = _make_adapter(authorized=True)
    update = _inline_update(query="plan")
    update.inline_query.answer = AsyncMock(side_effect=RuntimeError("boom"))
    # Must not raise — inline answering is best-effort.
    await adapter._handle_inline_query(update, None)
