import uuid

import pytest


def _auth_headers(tokens: dict) -> dict:
    return {"Authorization": f"Bearer {tokens['access_token']}"}


def _pick_form_and_sheet(client, admin_tokens) -> tuple[int, str, str | None]:
    response = client.get("/api/v1/form/", headers=_auth_headers(admin_tokens))
    assert response.status_code == 200
    forms = response.json().get("result") or []

    for form in forms:
        form_id = form.get("id")
        form_type = form.get("form_type_code")
        if not form_id or not form_type:
            continue

        sheets_response = client.get(
            f"/api/v1/form/{form_id}/sheets",
            headers=_auth_headers(admin_tokens),
        )
        if sheets_response.status_code != 200:
            continue

        sheets = (sheets_response.json().get("result") or {}).get("sheets") or []
        if "AHR" not in sheets:
            continue

        direction = "Support" if form_type == "FORM_1" else None
        return int(form_id), "AHR", direction

    pytest.skip("В тестовой БД не найдена форма с листом AHR")


def _pick_form_with_sheet(
    client, admin_tokens, target_sheet: str, form_type_code: str | None = None
) -> tuple[int, str]:
    response = client.get("/api/v1/form/", headers=_auth_headers(admin_tokens))
    assert response.status_code == 200
    forms = response.json().get("result") or []
    for form in forms:
        form_id = form.get("id")
        if not form_id:
            continue
        if form_type_code and form.get("form_type_code") != form_type_code:
            continue
        sheets_response = client.get(
            f"/api/v1/form/{form_id}/sheets",
            headers=_auth_headers(admin_tokens),
        )
        if sheets_response.status_code != 200:
            continue
        sheets = (sheets_response.json().get("result") or {}).get("sheets") or []
        if target_sheet in sheets:
            return int(form_id), target_sheet
    pytest.skip(f"Не найдена форма с листом {target_sheet}")


def _pick_input_line_id(client, admin_tokens, form_id: int, sheet: str, direction: str | None) -> int:
    url = f"/api/v1/form/{form_id}/sheet/{sheet}"
    params = []
    if direction:
        params.append(f"direction={direction}")
    if params:
        url = f"{url}?{'&'.join(params)}"

    response = client.get(url, headers=_auth_headers(admin_tokens))
    assert response.status_code == 200
    rows = response.json().get("result") or []
    for row in rows:
        data = row.get("data") or {}
        if row.get("row_type") == "INPUT" and data.get("line_id"):
            return int(data["line_id"])

    pytest.skip("Не найден INPUT line_id для проверки upd_form_cell")


def test_backend_calls_v_form_view_via_sheet_endpoint(client, admin_tokens):
    form_id, sheet, direction = _pick_form_and_sheet(client, admin_tokens)
    url = f"/api/v1/form/{form_id}/sheet/{sheet}"
    if direction:
        url = f"{url}?direction={direction}"

    response = client.get(url, headers=_auth_headers(admin_tokens))
    assert response.status_code == 200
    payload = response.json()
    assert isinstance(payload.get("result"), list)
    if payload["result"]:
        first_row = payload["result"][0]
        assert "row_type" in first_row
        assert "data" in first_row


def test_backend_calls_upd_form_cell_and_maps_sql_validation_error(client, admin_tokens):
    form_id, sheet, direction = _pick_form_and_sheet(client, admin_tokens)
    line_id = _pick_input_line_id(client, admin_tokens, form_id, sheet, direction)

    url = f"/api/v1/form/{form_id}/sheet/{sheet}/cell"
    if direction:
        url = f"{url}?direction={direction}"

    response = client.patch(
        url,
        json={"line_id": line_id, "column": "bad.scope", "value": 1},
        headers=_auth_headers(admin_tokens),
    )

    # SQL-функция отдает prefixed validation error.
    assert response.status_code in (400, 422)
    payload = response.json()
    assert isinstance(payload, dict)
    assert "message" in payload
    assert isinstance(payload["message"], str)


def test_backend_calls_form3_add_project_and_add_line_functions(client, admin_tokens):
    create = client.post(
        "/api/v1/projects",
        json={"name": f"ITEST_DB_FUNC_{uuid.uuid4().hex[:6]}", "year": 2026, "branch_id": 1},
        headers=_auth_headers(admin_tokens),
    )
    assert create.status_code == 200
    project_payload = create.json()
    assert "project_id" in project_payload
    assert "limit_report_id" in project_payload
    assert "current_expenses_report_id" in project_payload

    project_id = int(project_payload["project_id"])
    add_line = client.post(
        f"/api/v1/projects/{project_id}/report/2026/LIMIT/line",
        json={"expense_item_id": 1},
        headers=_auth_headers(admin_tokens),
    )
    assert add_line.status_code == 200
    rows = add_line.json()
    assert isinstance(rows, list)


def test_forms_validation_invalid_sections_returns_400(client, admin_tokens):
    form_id, sheet = _pick_form_with_sheet(client, admin_tokens, "AHR")
    response = client.get(
        f"/api/v1/form/{form_id}/sheet/{sheet}?sections=bad_section",
        headers=_auth_headers(admin_tokens),
    )
    assert response.status_code == 400
    payload = response.json()
    assert isinstance(payload, dict)
    assert "message" in payload


def test_forms_validation_empty_sections_csv_is_ignored(client, admin_tokens):
    form_id, sheet, direction = _pick_form_and_sheet(client, admin_tokens)
    url = f"/api/v1/form/{form_id}/sheet/{sheet}?sections= , , "
    if direction:
        url += f"&direction={direction}"
    response = client.get(url, headers=_auth_headers(admin_tokens))
    assert response.status_code == 200
    payload = response.json()
    assert isinstance(payload.get("result"), list)


def test_forms_validation_direction_required_for_form1_ahr(client, admin_tokens):
    form_id, sheet = _pick_form_with_sheet(client, admin_tokens, "AHR", form_type_code="FORM_1")
    response = client.get(
        f"/api/v1/form/{form_id}/sheet/{sheet}",
        headers=_auth_headers(admin_tokens),
    )
    assert response.status_code == 400
    payload = response.json()
    assert isinstance(payload, dict)
    assert "message" in payload
    assert "direction" in payload["message"].lower()


def test_forms_validation_direction_case_sensitive(client, admin_tokens):
    form_id, sheet = _pick_form_with_sheet(client, admin_tokens, "AHR", form_type_code="FORM_1")
    response = client.get(
        f"/api/v1/form/{form_id}/sheet/{sheet}?direction=support",
        headers=_auth_headers(admin_tokens),
    )
    assert response.status_code == 422


def test_forms_validation_direction_forbidden_on_non_form1(client, admin_tokens):
    form_id, sheet = _pick_form_with_sheet(client, admin_tokens, "AHR", form_type_code="FORM_2")
    response = client.get(
        f"/api/v1/form/{form_id}/sheet/{sheet}?direction=Support",
        headers=_auth_headers(admin_tokens),
    )
    assert response.status_code == 400
    payload = response.json()
    assert isinstance(payload, dict)
    assert "message" in payload
    assert "direction" in payload["message"].lower()


def test_form3_validation_invalid_sections_returns_400(client, admin_tokens):
    create = client.post(
        "/api/v1/projects",
        json={"name": f"ITEST_F3_SECT_{uuid.uuid4().hex[:6]}", "year": 2026, "branch_id": 1},
        headers=_auth_headers(admin_tokens),
    )
    assert create.status_code == 200
    project_id = int(create.json()["project_id"])
    response = client.get(
        f"/api/v1/projects/{project_id}/report/2026/LIMIT?sections=q1,q5",
        headers=_auth_headers(admin_tokens),
    )
    assert response.status_code == 400
    payload = response.json()
    assert isinstance(payload, dict)
    assert "message" in payload


def test_form3_validation_empty_sections_csv_is_ignored(client, admin_tokens):
    create = client.post(
        "/api/v1/projects",
        json={"name": f"ITEST_F3_EMPTY_{uuid.uuid4().hex[:6]}", "year": 2026, "branch_id": 1},
        headers=_auth_headers(admin_tokens),
    )
    assert create.status_code == 200
    project_id = int(create.json()["project_id"])
    response = client.get(
        f"/api/v1/projects/{project_id}/report/2026/LIMIT?sections= , , ",
        headers=_auth_headers(admin_tokens),
    )
    assert response.status_code == 200
    assert isinstance(response.json().get("result"), list)


def test_form3_validation_duplicate_sections_is_allowed(client, admin_tokens):
    create = client.post(
        "/api/v1/projects",
        json={"name": f"ITEST_F3_DUP_{uuid.uuid4().hex[:6]}", "year": 2026, "branch_id": 1},
        headers=_auth_headers(admin_tokens),
    )
    assert create.status_code == 200
    project_id = int(create.json()["project_id"])
    response = client.get(
        f"/api/v1/projects/{project_id}/report/2026/LIMIT?sections=q1,q1",
        headers=_auth_headers(admin_tokens),
    )
    assert response.status_code == 200
    assert isinstance(response.json().get("result"), list)


def test_form3_add_project_invalid_name_returns_422(client, admin_tokens):
    # Пробел запрещён regex-правилом AddProjectBody.
    response = client.post(
        "/api/v1/projects",
        json={"name": "INVALID NAME", "year": 2026, "branch_id": 1},
        headers=_auth_headers(admin_tokens),
    )
    assert response.status_code == 422


def test_health_and_ready_endpoints(client):
    healthz = client.get("/healthz")
    assert healthz.status_code == 200
    health_payload = healthz.json()
    assert health_payload.get("status") == "ok"

    readyz = client.get("/readyz")
    assert readyz.status_code in (200, 503)
    ready_payload = readyz.json()
    assert "status" in ready_payload
    assert "db_status" in ready_payload
    assert "mv_expense_item_tree" in ready_payload


def test_admin_refresh_tree_requires_admin_role(client, admin_tokens):
    admin_resp = client.post(
        "/api/v1/admin/refresh-tree",
        headers=_auth_headers(admin_tokens),
    )
    assert admin_resp.status_code in (200, 503)

    uname = f"itest_non_admin_{uuid.uuid4().hex[:6]}"
    create_user = client.put(
        "/api/v1/users/",
        json={
            "email": f"{uname}@example.com",
            "username": uname,
            "password": "pass123",
            "full_name": "Integration User",
            "role_id": 2,
        },
        headers=_auth_headers(admin_tokens),
    )
    if create_user.status_code != 200:
        pytest.skip("Не удалось создать non-admin пользователя в текущей БД")

    login_resp = client.post("/api/v1/auth/login", json={"username": uname, "password": "pass123"})
    if login_resp.status_code != 200:
        pytest.skip("Не удалось залогинить non-admin пользователя в текущей БД")
    user_tokens = login_resp.json()

    non_admin_resp = client.post(
        "/api/v1/admin/refresh-tree",
        headers=_auth_headers(user_tokens),
    )
    assert non_admin_resp.status_code == 403


def test_admin_refresh_tree_requires_auth(client):
    response = client.post("/api/v1/admin/refresh-tree")
    assert response.status_code in (401, 403)