"""Integration tests: HTTP API surface (no database required)."""
from __future__ import annotations

import json

import pytest

from app.config import get_settings


def test_health_reports_ok(client) -> None:
    r = client.get("/api/health")
    assert r.status_code == 200
    body = r.json()
    assert body["status"] == "ok"
    assert body["db"] in {"up", "down"}
    assert body["version"]


def test_suggestions_returns_list(client) -> None:
    r = client.get("/api/suggestions")
    assert r.status_code == 200
    suggestions = r.json()["suggestions"]
    assert isinstance(suggestions, list)
    assert len(suggestions) >= 3
    assert all(isinstance(s, str) and s.strip() for s in suggestions)


def test_suggestions_honors_bor_suggestions_env_override(monkeypatch) -> None:
    """GET /api/suggestions reflects the BOR_SUGGESTIONS JSON env override."""
    from fastapi.testclient import TestClient

    from app.main import create_app

    override = [
        "How do I back up with Borg?",
        "How is my K3S cluster set up?",
        "How do I deploy a service?",
        "What proxy fronts reeseapps.com?",
    ]
    get_settings.cache_clear()
    try:
        monkeypatch.setenv("BOR_SUGGESTIONS", json.dumps(override))
        fresh_client = TestClient(create_app())
    finally:
        get_settings.cache_clear()

    r = fresh_client.get("/api/suggestions")
    assert r.status_code == 200
    assert r.json() == {"suggestions": override}


@pytest.mark.parametrize(
    ("path", "marker"),
    [
        ("/", "Brain of Reese"),
        ("/sources.html", "Knowledge base"),
        ("/document.html", "Brain of Reese"),  # phase 10: viewer page
        ("/login.html", "Sign in"),  # phase 16: admin sign-in page
        ("/tuning.html", "Global Tuning"),  # phase 27: global tuning page
    ],
)
def test_html_pages_served_locally_no_cdn(client, path: str, marker: str) -> None:
    """No-CDN check (PLAN §7.3, re-verified on BOTH pages in phase 07 and
    on the viewer page in phase 10): each page is served by FastAPI and
    references only same-origin assets (no https:// script/link tags)."""
    r = client.get(path)
    assert r.status_code == 200
    assert marker in r.text
    assert 'src="https://' not in r.text
    assert 'href="https://' not in r.text


# Phase 33 (cache busting): the five HTML pages revalidate (no-cache) with
# ?v=<token> asset refs; /assets/* is immutable for a year; /api/* is
# untouched. The token itself is unit-tested in tests/unit/test_caching.py.


def test_index_page_no_cache_with_versioned_asset_refs(client) -> None:
    """GET / — always revalidated, and the stylesheet reference carries
    the process version token (non-empty, matching asset_version())."""
    from app.core.caching import asset_version

    token = asset_version()
    assert token  # non-empty in every supported environment

    r = client.get("/")
    assert r.status_code == 200
    assert r.headers["cache-control"] == "no-cache"
    assert f'href="/assets/styles.css?v={token}"' in r.text
    # The unversioned reference is gone from the served body.
    assert 'href="/assets/styles.css">' not in r.text


@pytest.mark.parametrize(
    "path",
    ["/sources.html", "/document.html", "/login.html", "/tuning.html"],
)
def test_html_pages_no_cache_with_versioned_refs(client, path: str) -> None:
    """Each of the other four pages revalidates and carries at least one
    versioned asset reference."""
    from app.core.caching import asset_version

    r = client.get(path)
    assert r.status_code == 200
    assert r.headers["cache-control"] == "no-cache"
    assert f"?v={asset_version()}" in r.text


def test_index_html_variant_no_cache_versioned(client) -> None:
    """/index.html is the same page as / — same caching treatment."""
    from app.core.caching import asset_version

    r = client.get("/index.html")
    assert r.status_code == 200
    assert r.headers["cache-control"] == "no-cache"
    assert f"?v={asset_version()}" in r.text


def test_assets_served_immutable_for_a_year(client) -> None:
    r = client.get("/assets/styles.css")
    assert r.status_code == 200
    cc = r.headers["cache-control"]
    assert "public" in cc
    assert "max-age=31536000" in cc
    assert "immutable" in cc
    # The asset body is untouched (header-only middleware).
    assert client.get("/assets/app.js?v=whichever").status_code == 200


def test_api_health_gets_no_cache_control_injected(client) -> None:
    """Baseline (pre-middleware) behavior for /api/*: FastAPI's JSON
    responses ship no Cache-Control header — the middleware must not
    inject one."""
    r = client.get("/api/health")
    assert r.status_code == 200
    assert "cache-control" not in r.headers


def test_styles_and_js_served(client) -> None:
    assert client.get("/assets/styles.css").status_code == 200
    assert client.get("/assets/app.js").status_code == 200
    assert client.get("/assets/sources.js").status_code == 200
    assert client.get("/assets/markdown.js").status_code == 200  # phase 10: shared renderer
    assert client.get("/assets/document.js").status_code == 200  # phase 10: viewer page
    assert client.get("/assets/login.js").status_code == 200  # phase 16: login page
    assert client.get("/assets/document-modal.js").status_code == 200  # phase 26: modal module
    assert client.get("/assets/tuning.js").status_code == 200  # phase 27: tuning page


# Emoji code points banned from UI chrome (phase 08): the pictograph
# blocks, VS-16/ZWJ, plus the exact glyphs the old light theme used
# (🧠 🧑 👋 📂 ⚠).
_EMOJI_GLYPHS = "\U0001F9E0\U0001F9D1\U0001F44B\U0001F4C2\u26A0"


def _find_emoji(text: str) -> list[str]:
    hits: list[str] = []
    for ch in text:
        cp = ord(ch)
        if (
            0x1F300 <= cp <= 0x1FAFF
            or 0x2600 <= cp <= 0x27BF
            or 0x2B00 <= cp <= 0x2BFF
            or cp in (0xFE0F, 0x200D)
            or ch in _EMOJI_GLYPHS
        ):
            hits.append(ch)
    return hits


@pytest.mark.parametrize(
    "path",
    [
        "/",
        "/sources.html",
        "/document.html",
        "/login.html",  # phase 16
        "/tuning.html",  # phase 27
        "/assets/app.js",
        "/assets/sources.js",
        "/assets/markdown.js",
        "/assets/document.js",
        "/assets/login.js",  # phase 16
        "/assets/document-modal.js",  # phase 26: the document modal module
        "/assets/styles.css",
    ],
)
def test_ui_chrome_has_no_emoji(client, path: str) -> None:
    """Permanent regression guard (phase 08): the UI chrome — all pages,
    the JS that renders it, and the stylesheet — is emoji-free."""
    r = client.get(path)
    assert r.status_code == 200
    assert _find_emoji(r.text) == [], f"emoji found in {path}: {_find_emoji(r.text)!r}"


def test_chat_requires_message(client) -> None:
    r = client.post("/api/chat", json={"message": ""})
    assert r.status_code == 422