"""Tests for hermes_cli.web_server and related config utilities."""

import os
import json
import tempfile
from pathlib import Path
from unittest.mock import patch, MagicMock

import pytest

from hermes_cli.config import (
    DEFAULT_CONFIG,
    reload_env,
    redact_key,
    _EXTRA_ENV_KEYS,
    OPTIONAL_ENV_VARS,
)


# ---------------------------------------------------------------------------
# reload_env tests
# ---------------------------------------------------------------------------


class TestReloadEnv:
    """Tests for reload_env() — re-reads .env into os.environ."""

    def test_adds_new_vars(self, tmp_path):
        """reload_env() adds vars from .env that are not in os.environ."""
        env_file = tmp_path / ".env"
        env_file.write_text("TEST_RELOAD_VAR=hello123\n")
        with patch("hermes_cli.config.get_env_path", return_value=env_file):
            os.environ.pop("TEST_RELOAD_VAR", None)
            count = reload_env()
            assert count >= 1
            assert os.environ.get("TEST_RELOAD_VAR") == "hello123"
        os.environ.pop("TEST_RELOAD_VAR", None)

    def test_updates_changed_vars(self, tmp_path):
        """reload_env() updates vars whose value changed on disk."""
        env_file = tmp_path / ".env"
        env_file.write_text("TEST_RELOAD_VAR=old_value\n")
        with patch("hermes_cli.config.get_env_path", return_value=env_file):
            os.environ["TEST_RELOAD_VAR"] = "old_value"
            # Now change the file
            env_file.write_text("TEST_RELOAD_VAR=new_value\n")
            count = reload_env()
            assert count >= 1
            assert os.environ.get("TEST_RELOAD_VAR") == "new_value"
        os.environ.pop("TEST_RELOAD_VAR", None)

    def test_removes_deleted_known_vars(self, tmp_path):
        """reload_env() removes known Hermes vars not present in .env."""
        env_file = tmp_path / ".env"
        env_file.write_text("")  # empty .env
        # Pick a known key from OPTIONAL_ENV_VARS
        known_key = next(iter(OPTIONAL_ENV_VARS.keys()))
        with patch("hermes_cli.config.get_env_path", return_value=env_file):
            os.environ[known_key] = "stale_value"
            count = reload_env()
            assert known_key not in os.environ
            assert count >= 1

    def test_does_not_remove_unknown_vars(self, tmp_path):
        """reload_env() preserves non-Hermes env vars even when absent from .env."""
        env_file = tmp_path / ".env"
        env_file.write_text("")
        with patch("hermes_cli.config.get_env_path", return_value=env_file):
            os.environ["MY_CUSTOM_UNRELATED_VAR"] = "keep_me"
            reload_env()
            assert os.environ.get("MY_CUSTOM_UNRELATED_VAR") == "keep_me"
        os.environ.pop("MY_CUSTOM_UNRELATED_VAR", None)


# ---------------------------------------------------------------------------
# redact_key tests
# ---------------------------------------------------------------------------


class TestRedactKey:
    def test_long_key_shows_prefix_suffix(self):
        result = redact_key("sk-1234567890abcdef")
        assert result.startswith("sk-1")
        assert result.endswith("cdef")
        assert "..." in result

    def test_short_key_fully_masked(self):
        assert redact_key("short") == "***"

    def test_empty_key(self):
        result = redact_key("")
        assert "not set" in result.lower() or result == "***" or "\x1b" in result


# ---------------------------------------------------------------------------
# web_server tests (FastAPI endpoints)
# ---------------------------------------------------------------------------


class TestWebServerEndpoints:
    """Test the FastAPI REST endpoints using Starlette TestClient."""

    @pytest.fixture(autouse=True)
    def _setup_test_client(self):
        """Create a TestClient — import is deferred to avoid requiring fastapi."""
        try:
            from starlette.testclient import TestClient
        except ImportError:
            pytest.skip("fastapi/starlette not installed")

        from hermes_cli.web_server import app
        self.client = TestClient(app)

    def test_get_status(self):
        resp = self.client.get("/api/status")
        assert resp.status_code == 200
        data = resp.json()
        assert "version" in data
        assert "hermes_home" in data
        assert "active_sessions" in data

    def test_get_status_filters_unconfigured_gateway_platforms(self, monkeypatch):
        import gateway.config as gateway_config
        import hermes_cli.web_server as web_server

        class _Platform:
            def __init__(self, value):
                self.value = value

        class _GatewayConfig:
            def get_connected_platforms(self):
                return [_Platform("telegram")]

        monkeypatch.setattr(web_server, "get_running_pid", lambda: 1234)
        monkeypatch.setattr(
            web_server,
            "read_runtime_status",
            lambda: {
                "gateway_state": "running",
                "updated_at": "2026-04-12T00:00:00+00:00",
                "platforms": {
                    "telegram": {"state": "connected", "updated_at": "2026-04-12T00:00:00+00:00"},
                    "whatsapp": {"state": "retrying", "updated_at": "2026-04-12T00:00:00+00:00"},
                    "feishu": {"state": "connected", "updated_at": "2026-04-12T00:00:00+00:00"},
                },
            },
        )
        monkeypatch.setattr(web_server, "check_config_version", lambda: (1, 1))
        monkeypatch.setattr(gateway_config, "load_gateway_config", lambda: _GatewayConfig())

        resp = self.client.get("/api/status")

        assert resp.status_code == 200
        assert resp.json()["gateway_platforms"] == {
            "telegram": {"state": "connected", "updated_at": "2026-04-12T00:00:00+00:00"},
        }

    def test_get_status_hides_stale_platforms_when_gateway_not_running(self, monkeypatch):
        import gateway.config as gateway_config
        import hermes_cli.web_server as web_server

        class _GatewayConfig:
            def get_connected_platforms(self):
                return []

        monkeypatch.setattr(web_server, "get_running_pid", lambda: None)
        monkeypatch.setattr(
            web_server,
            "read_runtime_status",
            lambda: {
                "gateway_state": "startup_failed",
                "updated_at": "2026-04-12T00:00:00+00:00",
                "platforms": {
                    "whatsapp": {"state": "retrying", "updated_at": "2026-04-12T00:00:00+00:00"},
                    "feishu": {"state": "connected", "updated_at": "2026-04-12T00:00:00+00:00"},
                },
            },
        )
        monkeypatch.setattr(web_server, "check_config_version", lambda: (1, 1))
        monkeypatch.setattr(gateway_config, "load_gateway_config", lambda: _GatewayConfig())

        resp = self.client.get("/api/status")

        assert resp.status_code == 200
        assert resp.json()["gateway_state"] == "startup_failed"
        assert resp.json()["gateway_platforms"] == {}

    def test_get_config_schema(self):
        resp = self.client.get("/api/config/schema")
        assert resp.status_code == 200
        data = resp.json()
        assert "fields" in data
        assert "category_order" in data
        schema = data["fields"]
        assert len(schema) > 100  # Should have 150+ fields
        assert "model" in schema
        # Verify category_order is a non-empty list
        assert isinstance(data["category_order"], list)
        assert len(data["category_order"]) > 0
        assert "general" in data["category_order"]

    def test_get_config_defaults(self):
        resp = self.client.get("/api/config/defaults")
        assert resp.status_code == 200
        defaults = resp.json()
        assert "model" in defaults

    def test_get_env_vars(self):
        resp = self.client.get("/api/env")
        assert resp.status_code == 200
        data = resp.json()
        # Should contain known env var names
        assert any(k.endswith("_API_KEY") or k.endswith("_TOKEN") for k in data.keys())

    def test_reveal_env_var(self, tmp_path):
        """POST /api/env/reveal should return the real unredacted value."""
        from hermes_cli.config import save_env_value
        from hermes_cli.web_server import _SESSION_TOKEN
        save_env_value("TEST_REVEAL_KEY", "super-secret-value-12345")
        resp = self.client.post(
            "/api/env/reveal",
            json={"key": "TEST_REVEAL_KEY"},
            headers={"Authorization": f"Bearer {_SESSION_TOKEN}"},
        )
        assert resp.status_code == 200
        data = resp.json()
        assert data["key"] == "TEST_REVEAL_KEY"
        assert data["value"] == "super-secret-value-12345"

    def test_reveal_env_var_not_found(self):
        """POST /api/env/reveal should 404 for unknown keys."""
        from hermes_cli.web_server import _SESSION_TOKEN
        resp = self.client.post(
            "/api/env/reveal",
            json={"key": "NONEXISTENT_KEY_XYZ"},
            headers={"Authorization": f"Bearer {_SESSION_TOKEN}"},
        )
        assert resp.status_code == 404

    def test_reveal_env_var_no_token(self, tmp_path):
        """POST /api/env/reveal without token should return 401."""
        from hermes_cli.config import save_env_value
        save_env_value("TEST_REVEAL_NOAUTH", "secret-value")
        resp = self.client.post(
            "/api/env/reveal",
            json={"key": "TEST_REVEAL_NOAUTH"},
        )
        assert resp.status_code == 401

    def test_reveal_env_var_bad_token(self, tmp_path):
        """POST /api/env/reveal with wrong token should return 401."""
        from hermes_cli.config import save_env_value
        save_env_value("TEST_REVEAL_BADAUTH", "secret-value")
        resp = self.client.post(
            "/api/env/reveal",
            json={"key": "TEST_REVEAL_BADAUTH"},
            headers={"Authorization": "Bearer wrong-token-here"},
        )
        assert resp.status_code == 401

    def test_session_token_endpoint(self):
        """GET /api/auth/session-token should return a token."""
        from hermes_cli.web_server import _SESSION_TOKEN
        resp = self.client.get("/api/auth/session-token")
        assert resp.status_code == 200
        assert resp.json()["token"] == _SESSION_TOKEN

    def test_path_traversal_blocked(self):
        """Verify URL-encoded path traversal is blocked."""
        # %2e%2e = ..
        resp = self.client.get("/%2e%2e/%2e%2e/etc/passwd")
        # Should return 200 with index.html (SPA fallback), not the actual file
        assert resp.status_code in (200, 404)
        if resp.status_code == 200:
            # Should be the SPA fallback, not the system file
            assert "root:" not in resp.text

    def test_path_traversal_dotdot_blocked(self):
        """Direct .. path traversal via encoded sequences."""
        resp = self.client.get("/%2e%2e/hermes_cli/web_server.py")
        assert resp.status_code in (200, 404)
        if resp.status_code == 200:
            assert "FastAPI" not in resp.text  # Should not serve the actual source


# ---------------------------------------------------------------------------
# _build_schema_from_config tests
# ---------------------------------------------------------------------------


class TestBuildSchemaFromConfig:
    def test_produces_expected_field_count(self):
        from hermes_cli.web_server import CONFIG_SCHEMA
        # DEFAULT_CONFIG has ~150+ leaf fields
        assert len(CONFIG_SCHEMA) > 100

    def test_schema_entries_have_required_fields(self):
        from hermes_cli.web_server import CONFIG_SCHEMA
        for key, entry in list(CONFIG_SCHEMA.items())[:10]:
            assert "type" in entry, f"Missing type for {key}"
            assert "category" in entry, f"Missing category for {key}"

    def test_overrides_applied(self):
        from hermes_cli.web_server import CONFIG_SCHEMA
        # terminal.backend should be a select with options
        if "terminal.backend" in CONFIG_SCHEMA:
            entry = CONFIG_SCHEMA["terminal.backend"]
            assert entry["type"] == "select"
            assert "options" in entry
            assert "local" in entry["options"]

    def test_empty_prefix_produces_correct_keys(self):
        from hermes_cli.web_server import _build_schema_from_config
        test_config = {"model": "test", "nested": {"key": "val"}}
        schema = _build_schema_from_config(test_config)
        assert "model" in schema
        assert "nested.key" in schema

    def test_top_level_scalars_get_general_category(self):
        """Top-level scalar fields should be in 'general' category."""
        from hermes_cli.web_server import CONFIG_SCHEMA
        assert CONFIG_SCHEMA["model"]["category"] == "general"

    def test_nested_keys_get_parent_category(self):
        """Nested fields should use the top-level parent as their category."""
        from hermes_cli.web_server import CONFIG_SCHEMA
        if "agent.max_turns" in CONFIG_SCHEMA:
            assert CONFIG_SCHEMA["agent.max_turns"]["category"] == "agent"

    def test_category_merge_applied(self):
        """Small categories should be merged into larger ones."""
        from hermes_cli.web_server import CONFIG_SCHEMA
        categories = {e["category"] for e in CONFIG_SCHEMA.values()}
        # These should be merged away
        assert "privacy" not in categories  # merged into security
        assert "context" not in categories  # merged into agent

    def test_no_single_field_categories(self):
        """After merging, no category should have just 1 field."""
        from hermes_cli.web_server import CONFIG_SCHEMA
        from collections import Counter
        cats = Counter(e["category"] for e in CONFIG_SCHEMA.values())
        for cat, count in cats.items():
            assert count >= 2, f"Category '{cat}' has only {count} field(s) — should be merged"


# ---------------------------------------------------------------------------
# Config round-trip tests
# ---------------------------------------------------------------------------


class TestConfigRoundTrip:
    """Verify config survives GET → edit → PUT without data loss."""

    @pytest.fixture(autouse=True)
    def _setup(self):
        try:
            from starlette.testclient import TestClient
        except ImportError:
            pytest.skip("fastapi/starlette not installed")
        from hermes_cli.web_server import app
        self.client = TestClient(app)

    def test_get_config_no_internal_keys(self):
        """GET /api/config should not expose _config_version or _model_meta."""
        config = self.client.get("/api/config").json()
        internal = [k for k in config if k.startswith("_")]
        assert not internal, f"Internal keys leaked to frontend: {internal}"

    def test_get_config_model_is_string(self):
        """GET /api/config should normalize model dict to a string."""
        config = self.client.get("/api/config").json()
        assert isinstance(config.get("model"), str), \
            f"model should be string, got {type(config.get('model'))}"

    def test_round_trip_preserves_model_subkeys(self):
        """Save and reload should not lose model.provider, model.base_url, etc."""
        from hermes_cli.config import load_config, save_config

        # Set up a config with model as a dict (the common user config form)
        save_config({
            "model": {
                "default": "anthropic/claude-sonnet-4",
                "provider": "openrouter",
                "base_url": "https://openrouter.ai/api/v1",
                "api_mode": "openai",
            }
        })

        before = load_config()
        assert isinstance(before.get("model"), dict)
        original_keys = set(before["model"].keys())

        # GET → PUT unchanged
        web_config = self.client.get("/api/config").json()
        assert isinstance(web_config.get("model"), str), "GET should normalize model to string"

        self.client.put("/api/config", json={"config": web_config})

        after = load_config()
        assert isinstance(after.get("model"), dict), "model should still be a dict after save"
        assert set(after["model"].keys()) >= original_keys, \
            f"Lost model subkeys: {original_keys - set(after['model'].keys())}"

    def test_edit_model_name_preserved(self):
        """Changing the model string should update model.default on disk."""
        from hermes_cli.config import load_config

        web_config = self.client.get("/api/config").json()
        original_model = web_config["model"]

        # Change model
        web_config["model"] = "test/editing-model"
        self.client.put("/api/config", json={"config": web_config})

        after = load_config()
        if isinstance(after.get("model"), dict):
            assert after["model"]["default"] == "test/editing-model"
        else:
            assert after["model"] == "test/editing-model"

        # Restore
        web_config["model"] = original_model
        self.client.put("/api/config", json={"config": web_config})

    def test_edit_nested_value(self):
        """Editing a nested config value should persist correctly."""
        from hermes_cli.config import load_config

        web_config = self.client.get("/api/config").json()
        original_turns = web_config.get("agent", {}).get("max_turns")

        # Change max_turns
        if "agent" not in web_config:
            web_config["agent"] = {}
        web_config["agent"]["max_turns"] = 42

        self.client.put("/api/config", json={"config": web_config})

        after = load_config()
        assert after.get("agent", {}).get("max_turns") == 42

        # Restore
        web_config["agent"]["max_turns"] = original_turns
        self.client.put("/api/config", json={"config": web_config})

    def test_schema_types_match_config_values(self):
        """Every schema field should have a matching-type value in the config."""
        config = self.client.get("/api/config").json()
        schema_resp = self.client.get("/api/config/schema").json()
        schema = schema_resp["fields"]

        def get_nested(obj, path):
            parts = path.split(".")
            cur = obj
            for p in parts:
                if cur is None or not isinstance(cur, dict):
                    return None
                cur = cur.get(p)
            return cur

        mismatches = []
        for key, entry in schema.items():
            val = get_nested(config, key)
            if val is None:
                continue  # not set in user config — fine
            expected = entry["type"]
            if expected in ("string", "select") and not isinstance(val, str):
                mismatches.append(f"{key}: expected str, got {type(val).__name__}")
            elif expected == "number" and not isinstance(val, (int, float)):
                mismatches.append(f"{key}: expected number, got {type(val).__name__}")
            elif expected == "boolean" and not isinstance(val, bool):
                mismatches.append(f"{key}: expected bool, got {type(val).__name__}")
            elif expected == "list" and not isinstance(val, list):
                mismatches.append(f"{key}: expected list, got {type(val).__name__}")
        assert not mismatches, f"Type mismatches:\n" + "\n".join(mismatches)


# ---------------------------------------------------------------------------
# New feature endpoint tests
# ---------------------------------------------------------------------------


class TestNewEndpoints:
    """Tests for session detail, logs, cron, skills, tools, raw config, analytics."""

    @pytest.fixture(autouse=True)
    def _setup(self):
        try:
            from starlette.testclient import TestClient
        except ImportError:
            pytest.skip("fastapi/starlette not installed")
        from hermes_cli.web_server import app
        self.client = TestClient(app)

    def test_get_logs_default(self):
        resp = self.client.get("/api/logs")
        assert resp.status_code == 200
        data = resp.json()
        assert "file" in data
        assert "lines" in data
        assert isinstance(data["lines"], list)

    def test_get_logs_invalid_file(self):
        resp = self.client.get("/api/logs?file=nonexistent")
        assert resp.status_code == 400

    def test_cron_list(self):
        resp = self.client.get("/api/cron/jobs")
        assert resp.status_code == 200
        assert isinstance(resp.json(), list)

    def test_cron_job_not_found(self):
        resp = self.client.get("/api/cron/jobs/nonexistent-id")
        assert resp.status_code == 404

    def test_skills_list(self):
        resp = self.client.get("/api/skills")
        assert resp.status_code == 200
        skills = resp.json()
        assert isinstance(skills, list)
        if skills:
            assert "name" in skills[0]
            assert "enabled" in skills[0]

    def test_skills_list_includes_disabled_skills(self, monkeypatch):
        import tools.skills_tool as skills_tool
        import hermes_cli.skills_config as skills_config
        import hermes_cli.web_server as web_server

        def _fake_find_all_skills(*, skip_disabled=False):
            if skip_disabled:
                return [
                    {"name": "active-skill", "description": "active", "category": "demo"},
                    {"name": "disabled-skill", "description": "disabled", "category": "demo"},
                ]
            return [
                {"name": "active-skill", "description": "active", "category": "demo"},
            ]

        monkeypatch.setattr(skills_tool, "_find_all_skills", _fake_find_all_skills)
        monkeypatch.setattr(skills_config, "get_disabled_skills", lambda config: {"disabled-skill"})
        monkeypatch.setattr(web_server, "load_config", lambda: {"skills": {"disabled": ["disabled-skill"]}})

        resp = self.client.get("/api/skills")

        assert resp.status_code == 200
        assert resp.json() == [
            {
                "name": "active-skill",
                "description": "active",
                "category": "demo",
                "enabled": True,
            },
            {
                "name": "disabled-skill",
                "description": "disabled",
                "category": "demo",
                "enabled": False,
            },
        ]

    def test_toolsets_list(self):
        resp = self.client.get("/api/tools/toolsets")
        assert resp.status_code == 200
        toolsets = resp.json()
        assert isinstance(toolsets, list)
        if toolsets:
            assert "name" in toolsets[0]
            assert "label" in toolsets[0]
            assert "enabled" in toolsets[0]

    def test_toolsets_list_matches_cli_enabled_state(self, monkeypatch):
        import hermes_cli.tools_config as tools_config
        import toolsets as toolsets_module
        import hermes_cli.web_server as web_server

        monkeypatch.setattr(
            tools_config,
            "_get_effective_configurable_toolsets",
            lambda: [
                ("web", "🔍 Web Search & Scraping", "web_search, web_extract"),
                ("skills", "📚 Skills", "list, view, manage"),
                ("memory", "💾 Memory", "persistent memory across sessions"),
            ],
        )
        monkeypatch.setattr(
            tools_config,
            "_get_platform_tools",
            lambda config, platform, include_default_mcp_servers=False: {"web", "skills"},
        )
        monkeypatch.setattr(
            tools_config,
            "_toolset_has_keys",
            lambda ts_key, config=None: ts_key != "web",
        )
        monkeypatch.setattr(
            toolsets_module,
            "resolve_toolset",
            lambda name: {
                "web": ["web_search", "web_extract"],
                "skills": ["skills_list", "skill_view"],
                "memory": ["memory_read"],
            }[name],
        )
        monkeypatch.setattr(web_server, "load_config", lambda: {"platform_toolsets": {"cli": ["web", "skills"]}})

        resp = self.client.get("/api/tools/toolsets")

        assert resp.status_code == 200
        assert resp.json() == [
            {
                "name": "web",
                "label": "🔍 Web Search & Scraping",
                "description": "web_search, web_extract",
                "enabled": True,
                "available": True,
                "configured": False,
                "tools": ["web_extract", "web_search"],
            },
            {
                "name": "skills",
                "label": "📚 Skills",
                "description": "list, view, manage",
                "enabled": True,
                "available": True,
                "configured": True,
                "tools": ["skill_view", "skills_list"],
            },
            {
                "name": "memory",
                "label": "💾 Memory",
                "description": "persistent memory across sessions",
                "enabled": False,
                "available": False,
                "configured": True,
                "tools": ["memory_read"],
            },
        ]

    def test_config_raw_get(self):
        resp = self.client.get("/api/config/raw")
        assert resp.status_code == 200
        assert "yaml" in resp.json()

    def test_config_raw_put_valid(self):
        resp = self.client.put(
            "/api/config/raw",
            json={"yaml_text": "model: test\ntoolsets:\n  - all\n"},
        )
        assert resp.status_code == 200
        assert resp.json()["ok"] is True

    def test_config_raw_put_invalid(self):
        resp = self.client.put(
            "/api/config/raw",
            json={"yaml_text": "- this is a list not a dict"},
        )
        assert resp.status_code == 400

    def test_analytics_usage(self):
        resp = self.client.get("/api/analytics/usage?days=7")
        assert resp.status_code == 200
        data = resp.json()
        assert "daily" in data
        assert "by_model" in data
        assert "totals" in data
        assert isinstance(data["daily"], list)
        assert "total_sessions" in data["totals"]

    def test_session_token_endpoint(self):
        from hermes_cli.web_server import _SESSION_TOKEN
        resp = self.client.get("/api/auth/session-token")
        assert resp.status_code == 200
        assert resp.json()["token"] == _SESSION_TOKEN


# ---------------------------------------------------------------------------
# Model context length: normalize/denormalize + /api/model/info
# ---------------------------------------------------------------------------


class TestModelContextLength:
    """Tests for model_context_length in normalize/denormalize and /api/model/info."""

    def test_normalize_extracts_context_length_from_dict(self):
        """normalize should surface context_length from model dict."""
        from hermes_cli.web_server import _normalize_config_for_web

        cfg = {
            "model": {
                "default": "anthropic/claude-opus-4.6",
                "provider": "openrouter",
                "context_length": 200000,
            }
        }
        result = _normalize_config_for_web(cfg)
        assert result["model"] == "anthropic/claude-opus-4.6"
        assert result["model_context_length"] == 200000

    def test_normalize_bare_string_model_yields_zero(self):
        """normalize should set model_context_length=0 for bare string model."""
        from hermes_cli.web_server import _normalize_config_for_web

        result = _normalize_config_for_web({"model": "anthropic/claude-sonnet-4"})
        assert result["model"] == "anthropic/claude-sonnet-4"
        assert result["model_context_length"] == 0

    def test_normalize_dict_without_context_length_yields_zero(self):
        """normalize should default to 0 when model dict has no context_length."""
        from hermes_cli.web_server import _normalize_config_for_web

        cfg = {"model": {"default": "test/model", "provider": "openrouter"}}
        result = _normalize_config_for_web(cfg)
        assert result["model_context_length"] == 0

    def test_normalize_non_int_context_length_yields_zero(self):
        """normalize should coerce non-int context_length to 0."""
        from hermes_cli.web_server import _normalize_config_for_web

        cfg = {"model": {"default": "test/model", "context_length": "invalid"}}
        result = _normalize_config_for_web(cfg)
        assert result["model_context_length"] == 0

    def test_denormalize_writes_context_length_into_model_dict(self):
        """denormalize should write model_context_length back into model dict."""
        from hermes_cli.web_server import _denormalize_config_from_web
        from hermes_cli.config import save_config

        # Set up disk config with model as a dict
        save_config({
            "model": {"default": "anthropic/claude-opus-4.6", "provider": "openrouter"}
        })

        result = _denormalize_config_from_web({
            "model": "anthropic/claude-opus-4.6",
            "model_context_length": 100000,
        })
        assert isinstance(result["model"], dict)
        assert result["model"]["context_length"] == 100000
        assert "model_context_length" not in result  # virtual field removed

    def test_denormalize_zero_removes_context_length(self):
        """denormalize with model_context_length=0 should remove context_length key."""
        from hermes_cli.web_server import _denormalize_config_from_web
        from hermes_cli.config import save_config

        save_config({
            "model": {
                "default": "anthropic/claude-opus-4.6",
                "provider": "openrouter",
                "context_length": 50000,
            }
        })

        result = _denormalize_config_from_web({
            "model": "anthropic/claude-opus-4.6",
            "model_context_length": 0,
        })
        assert isinstance(result["model"], dict)
        assert "context_length" not in result["model"]

    def test_denormalize_upgrades_bare_string_to_dict(self):
        """denormalize should upgrade bare string model to dict when context_length set."""
        from hermes_cli.web_server import _denormalize_config_from_web
        from hermes_cli.config import save_config

        # Disk has model as bare string
        save_config({"model": "anthropic/claude-sonnet-4"})

        result = _denormalize_config_from_web({
            "model": "anthropic/claude-sonnet-4",
            "model_context_length": 65000,
        })
        assert isinstance(result["model"], dict)
        assert result["model"]["default"] == "anthropic/claude-sonnet-4"
        assert result["model"]["context_length"] == 65000

    def test_denormalize_bare_string_stays_string_when_zero(self):
        """denormalize should keep bare string model as string when context_length=0."""
        from hermes_cli.web_server import _denormalize_config_from_web
        from hermes_cli.config import save_config

        save_config({"model": "anthropic/claude-sonnet-4"})

        result = _denormalize_config_from_web({
            "model": "anthropic/claude-sonnet-4",
            "model_context_length": 0,
        })
        assert result["model"] == "anthropic/claude-sonnet-4"

    def test_denormalize_coerces_string_context_length(self):
        """denormalize should handle string model_context_length from frontend."""
        from hermes_cli.web_server import _denormalize_config_from_web
        from hermes_cli.config import save_config

        save_config({
            "model": {"default": "test/model", "provider": "openrouter"}
        })

        result = _denormalize_config_from_web({
            "model": "test/model",
            "model_context_length": "32000",
        })
        assert isinstance(result["model"], dict)
        assert result["model"]["context_length"] == 32000


class TestModelContextLengthSchema:
    """Tests for model_context_length placement in CONFIG_SCHEMA."""

    def test_schema_has_model_context_length(self):
        from hermes_cli.web_server import CONFIG_SCHEMA
        assert "model_context_length" in CONFIG_SCHEMA

    def test_schema_model_context_length_after_model(self):
        """model_context_length should appear immediately after model in schema."""
        from hermes_cli.web_server import CONFIG_SCHEMA
        keys = list(CONFIG_SCHEMA.keys())
        model_idx = keys.index("model")
        assert keys[model_idx + 1] == "model_context_length"

    def test_schema_model_context_length_is_number(self):
        from hermes_cli.web_server import CONFIG_SCHEMA
        entry = CONFIG_SCHEMA["model_context_length"]
        assert entry["type"] == "number"
        assert "category" in entry


class TestModelInfoEndpoint:
    """Tests for GET /api/model/info endpoint."""

    @pytest.fixture(autouse=True)
    def _setup(self):
        try:
            from starlette.testclient import TestClient
        except ImportError:
            pytest.skip("fastapi/starlette not installed")
        from hermes_cli.web_server import app
        self.client = TestClient(app)

    def test_model_info_returns_200(self):
        resp = self.client.get("/api/model/info")
        assert resp.status_code == 200
        data = resp.json()
        assert "model" in data
        assert "provider" in data
        assert "auto_context_length" in data
        assert "config_context_length" in data
        assert "effective_context_length" in data
        assert "capabilities" in data

    def test_model_info_with_dict_config(self, monkeypatch):
        import hermes_cli.web_server as ws

        monkeypatch.setattr(ws, "load_config", lambda: {
            "model": {
                "default": "anthropic/claude-opus-4.6",
                "provider": "openrouter",
                "context_length": 100000,
            }
        })

        with patch("agent.model_metadata.get_model_context_length", return_value=200000):
            resp = self.client.get("/api/model/info")

        data = resp.json()
        assert data["model"] == "anthropic/claude-opus-4.6"
        assert data["provider"] == "openrouter"
        assert data["auto_context_length"] == 200000
        assert data["config_context_length"] == 100000
        assert data["effective_context_length"] == 100000  # override wins

    def test_model_info_auto_detect_when_no_override(self, monkeypatch):
        import hermes_cli.web_server as ws

        monkeypatch.setattr(ws, "load_config", lambda: {
            "model": {"default": "anthropic/claude-opus-4.6", "provider": "openrouter"}
        })

        with patch("agent.model_metadata.get_model_context_length", return_value=200000):
            resp = self.client.get("/api/model/info")

        data = resp.json()
        assert data["auto_context_length"] == 200000
        assert data["config_context_length"] == 0
        assert data["effective_context_length"] == 200000  # auto wins

    def test_model_info_empty_model(self, monkeypatch):
        import hermes_cli.web_server as ws

        monkeypatch.setattr(ws, "load_config", lambda: {"model": ""})

        resp = self.client.get("/api/model/info")
        data = resp.json()
        assert data["model"] == ""
        assert data["effective_context_length"] == 0

    def test_model_info_bare_string_model(self, monkeypatch):
        import hermes_cli.web_server as ws

        monkeypatch.setattr(ws, "load_config", lambda: {
            "model": "anthropic/claude-sonnet-4"
        })

        with patch("agent.model_metadata.get_model_context_length", return_value=200000):
            resp = self.client.get("/api/model/info")

        data = resp.json()
        assert data["model"] == "anthropic/claude-sonnet-4"
        assert data["provider"] == ""
        assert data["config_context_length"] == 0
        assert data["effective_context_length"] == 200000

    def test_model_info_capabilities(self, monkeypatch):
        import hermes_cli.web_server as ws

        monkeypatch.setattr(ws, "load_config", lambda: {
            "model": {"default": "anthropic/claude-opus-4.6", "provider": "openrouter"}
        })

        mock_caps = MagicMock()
        mock_caps.supports_tools = True
        mock_caps.supports_vision = True
        mock_caps.supports_reasoning = True
        mock_caps.context_window = 200000
        mock_caps.max_output_tokens = 32000
        mock_caps.model_family = "claude-opus"

        with patch("agent.model_metadata.get_model_context_length", return_value=200000), \
             patch("agent.models_dev.get_model_capabilities", return_value=mock_caps):
            resp = self.client.get("/api/model/info")

        caps = resp.json()["capabilities"]
        assert caps["supports_tools"] is True
        assert caps["supports_vision"] is True
        assert caps["supports_reasoning"] is True
        assert caps["max_output_tokens"] == 32000
        assert caps["model_family"] == "claude-opus"

    def test_model_info_graceful_on_metadata_error(self, monkeypatch):
        """Endpoint should return zeros on import/resolution errors, not 500."""
        import hermes_cli.web_server as ws

        monkeypatch.setattr(ws, "load_config", lambda: {
            "model": "some/obscure-model"
        })

        with patch("agent.model_metadata.get_model_context_length", side_effect=Exception("boom")):
            resp = self.client.get("/api/model/info")

        assert resp.status_code == 200
        data = resp.json()
        assert data["auto_context_length"] == 0
