from __future__ import annotations

from app.api.deps import CurrentUserContext
from app.core.config import get_settings
from app.schemas.ocr import OcrRecognizeDocumentRead
from app.services.receipt_folder import ReceiptFolderService


def test_receipt_folder_train_ticket_uses_invoice_date_and_enriches_fields(monkeypatch, tmp_path) -> None:
    monkeypatch.setenv("STORAGE_ROOT_DIR", str(tmp_path / "storage"))
    get_settings.cache_clear()
    try:
        current_user = CurrentUserContext(
            username="pytest",
            name="Py Test",
            role_codes=[],
            is_admin=False,
        )
        service = ReceiptFolderService()
        receipt = service.save_receipt(
            filename="2月23_上海-武汉.pdf",
            content=b"%PDF-1.4 fake",
            media_type="application/pdf",
            current_user=current_user,
            document=OcrRecognizeDocumentRead(
                filename="2月23_上海-武汉.pdf",
                media_type="application/pdf",
                text=(
                    "电子发票（铁路电子客票）\n"
                    "发票号码:26319166100006175398\n"
                    "电子客票号:E1234567890123\n"
                    "开票日期:2026-02-18\n"
                    "上海虹桥站\n"
                    "武汉站\n"
                    "G456\n"
                    "二等座\n"
                    "06车01B号\n"
                    "2026-02-20 08:30开\n"
                    "票价:￥354.00\n"
                    "1101011990****1234\n"
                    "张三"
                ),
                summary="铁路电子客票，上海虹桥至武汉，票价 354 元。",
                document_type="train_ticket",
                document_type_label="火车/高铁票",
                scene_code="travel",
                scene_label="差旅票据",
            ),
        )

        assert receipt.document_date == "2026-02-18"
        assert receipt.merchant_name == "中国铁路"
        assert receipt.amount == "354.00元"

        detail = service.get_receipt(receipt.id, current_user)
        fields = {field.label: field.value for field in detail.fields}
        assert fields["开票日期"] == "2026-02-18"
        assert fields["乘车人"] == "张三"
        assert fields["出发地点"] == "上海虹桥"
        assert fields["到达地点"] == "武汉"
        assert fields["车次"] == "G456"
        assert fields["电子客票号"] == "E1234567890123"
        assert fields["身份证号"] == "1101011990****1234"
        assert fields["席别"] == "二等座"
        assert fields["车厢"] == "06车"
        assert fields["座位号"] == "01B"
        assert fields["列车出发时间"] == "2026-02-20 08:30"
    finally:
        get_settings.cache_clear()


def test_receipt_folder_unlink_receipts_for_claim_marks_linked_receipts_unlinked(monkeypatch, tmp_path) -> None:
    monkeypatch.setenv("STORAGE_ROOT_DIR", str(tmp_path / "storage"))
    get_settings.cache_clear()
    try:
        current_user = CurrentUserContext(
            username="pytest",
            name="Py Test",
            role_codes=[],
            is_admin=False,
        )
        service = ReceiptFolderService()
        receipt = service.save_receipt(
            filename="linked-receipt.pdf",
            content=b"%PDF-1.4 linked",
            media_type="application/pdf",
            current_user=current_user,
            linked_claim_id="claim-1",
            linked_claim_no="RE-001",
            linked_item_id="item-1",
            document=OcrRecognizeDocumentRead(
                filename="linked-receipt.pdf",
                media_type="application/pdf",
                text="invoice number 123 amount 100",
                document_type="vat_invoice",
                document_type_label="invoice",
                scene_code="other",
                scene_label="receipt",
            ),
        )

        linked_detail = service.get_receipt(receipt.id, current_user)
        assert linked_detail.status == "linked"
        assert linked_detail.linked_claim_id == "claim-1"
        assert linked_detail.linked_claim_no == "RE-001"

        assert service.unlink_receipts_for_claim("claim-1") == 1

        unlinked_detail = service.get_receipt(receipt.id, current_user)
        assert unlinked_detail.status == "unlinked"
        assert unlinked_detail.linked_claim_id == ""
        assert unlinked_detail.linked_claim_no == ""
        assert unlinked_detail.linked_at is None
    finally:
        get_settings.cache_clear()