from datetime import datetime
from decimal import Decimal
from types import SimpleNamespace
from unittest.mock import MagicMock

import pytest

from app.services.pl_io_order_service import apply_site_feedback


def _header(**kwargs):
    defaults = dict(
        id="order-1",
        tenant_no="t1",
        status="in_progress",
        site_feedback_remark=None,
        site_feedback_images=None,
        site_feedback_time=None,
        site_first_submitted_at=None,
        update_by=None,
    )
    defaults.update(kwargs)
    return SimpleNamespace(**defaults)


def _item(item_id="item-1"):
    return SimpleNamespace(
        id=item_id,
        plan_product_id="pp-1",
        actual_qty=None,
        qty_source=None,
        update_by=None,
    )


def test_apply_site_feedback_sets_status_completed():
    header = _header()
    item = _item()
    db = MagicMock()
    apply_site_feedback(
        db,
        kind="inbound",
        header=header,
        items=[item],
        item_qty={"item-1": Decimal("12.5")},
        remark="ok",
        images=["a.jpg"],
        status="completed",
    )
    assert header.status == "completed"
    assert item.actual_qty == Decimal("12.5")
    assert header.site_first_submitted_at is not None
    assert header.site_feedback_remark == "ok"
    db.flush.assert_called_once()


def test_apply_site_feedback_sets_status_voided():
    header = _header()
    apply_site_feedback(
        MagicMock(),
        kind="inbound",
        header=header,
        items=[_item()],
        item_qty={"item-1": Decimal("1")},
        remark=None,
        images=[],
        status="voided",
    )
    assert header.status == "voided"


def test_apply_site_feedback_keeps_in_progress_when_requested():
    """首次提交选进行中时，不得隐式改成已完成。"""
    header = _header(status="in_progress")
    apply_site_feedback(
        MagicMock(),
        kind="inbound",
        header=header,
        items=[_item()],
        item_qty={"item-1": Decimal("1")},
        remark=None,
        images=[],
        status="in_progress",
    )
    assert header.status == "in_progress"
    assert header.site_first_submitted_at is not None


def test_apply_site_feedback_rejects_invalid_status():
    header = _header()
    with pytest.raises(ValueError, match="无效状态"):
        apply_site_feedback(
            MagicMock(),
            kind="inbound",
            header=header,
            items=[_item()],
            item_qty={},
            remark=None,
            images=[],
            status="done",
        )


def test_apply_site_feedback_rejects_already_voided():
    header = _header(status="voided")
    with pytest.raises(ValueError, match="单据已作废"):
        apply_site_feedback(
            MagicMock(),
            kind="inbound",
            header=header,
            items=[_item()],
            item_qty={},
            remark=None,
            images=[],
            status="completed",
        )


def test_apply_site_feedback_does_not_reset_first_submitted_at():
    first = datetime(2026, 1, 1, 12, 0, 0)
    header = _header(
        status="completed",
        site_first_submitted_at=first,
    )
    apply_site_feedback(
        MagicMock(),
        kind="inbound",
        header=header,
        items=[_item()],
        item_qty={"item-1": Decimal("2")},
        remark="二改",
        images=[],
        status="in_progress",
    )
    assert header.status == "in_progress"
    assert header.site_first_submitted_at == first