"""Tests for prompt profile export endpoints (Phase PX.1).

Covers:
- GET /api/v1/prompts/profiles/{name}/export — single profile export
- GET /api/v1/prompts/export/all — all profiles export
- Validation of profile name, format, and structure
"""

import pytest
from fastapi import FastAPI
from fastapi.testclient import TestClient

from app.core.sqlite_db import init_prompts_db, seed_default_profiles, _get_db
from app.routers.prompts import router


_VALID_STEPS = {
    "decompose", "filter", "generate",
    "generate_per_subq", "filter_intro", "filter_section", "filter_outro",
}


@pytest.fixture
def client(tmp_path, monkeypatch):
    prompts_path = str(tmp_path / "prompts.db")
    monkeypatch.setenv("PROMPTS_DB_PATH", prompts_path)
    monkeypatch.setenv("HISTORY_DB_PATH", str(tmp_path / "history.db"))

    from app.core.config import get_settings
    get_settings.cache_clear()
    from app.core.dependencies import get_settings_cached
    get_settings_cached.cache_clear()

    conn = _get_db(prompts_path)
    init_prompts_db(conn)
    seed_default_profiles(conn)
    conn.close()

    test_app = FastAPI()
    test_app.include_router(router)

    yield TestClient(test_app)

    get_settings_cached.cache_clear()
    get_settings.cache_clear()


def test_export_profile_valid(client):
    resp = client.get("/api/v1/prompts/profiles/A/export")
    assert resp.status_code == 200

    data = resp.json()
    assert data["format"] == "legco-reranker-profile/v1"
    assert data["profile_name"] == "A"
    assert "exported_at" in data
    assert set(data["prompts"].keys()) == _VALID_STEPS


def test_export_profile_has_content_disposition_header(client):
    resp = client.get("/api/v1/prompts/profiles/A/export")
    assert resp.status_code == 200
    assert resp.headers["content-disposition"] == 'attachment; filename="legco-profile-A.json"'


def test_export_profile_invalid_name(client):
    resp = client.get("/api/v1/prompts/profiles/X/export")
    assert resp.status_code == 400


def test_export_all(client):
    resp = client.get("/api/v1/prompts/export/all")
    assert resp.status_code == 200

    data = resp.json()
    assert data["format"] == "legco-reranker-profile/v1"
    assert "exported_at" in data
    assert data["active_profile"] == "A"
    assert set(data["profiles"].keys()) == {"A", "B", "C"}

    for name in ("A", "B", "C"):
        assert set(data["profiles"][name]["prompts"].keys()) == _VALID_STEPS


def test_export_profile_b_and_c(client):
    for name in ("B", "C"):
        resp = client.get(f"/api/v1/prompts/profiles/{name}/export")
        assert resp.status_code == 200
        assert resp.json()["profile_name"] == name