"""dispatch 모듈 박스 묶기/SKU 합산 순수 로직 테스트.

DB/엑셀 없이 store.py 의 규칙만 검증한다.
    python -m app.modules.dispatch.tests.test_grouping
또는 pytest 로 실행 가능.
"""

from __future__ import annotations

from app.modules.dispatch import store


def test_package_id_priority():
    """묶음키 우선순위: package_id > tracking_id > order_id."""
    rows = [
        {"order_id": "O1", "package_id": "P1", "tracking_id": "T1", "seller_sku": "MT-0320", "quantity": "1"},
        {"order_id": "O1", "package_id": "P1", "tracking_id": "T1", "seller_sku": "MT-0320", "quantity": "1"},
        {"order_id": "O1", "package_id": "P2", "tracking_id": "T2", "seller_sku": "MY-0001", "quantity": "1"},
    ]
    parcels = store.group_parcels(rows)
    assert len(parcels) == 2, parcels  # P1, P2 → 박스 2개
    p1 = next(p for p in parcels if p["package_id"] == "P1")
    # 같은 박스 같은 SKU 수량 합산 → 2
    assert p1["items"][0]["quantity"] == 2, p1


def test_tracking_then_order_fallback():
    """package_id 없으면 tracking_id, 그것도 없으면 order_id 로 묶는다."""
    rows = [
        {"order_id": "O9", "package_id": "", "tracking_id": "TRK", "seller_sku": "MT-0550", "quantity": ""},
        {"order_id": "O9", "package_id": "", "tracking_id": "TRK", "seller_sku": "MX-0001", "quantity": "3"},
        {"order_id": "O8", "package_id": "", "tracking_id": "", "seller_sku": "MT-0750", "quantity": "2"},
    ]
    parcels = store.group_parcels(rows)
    assert len(parcels) == 2, parcels
    trk = next(p for p in parcels if p["tracking_id"] == "TRK")
    assert len(trk["items"]) == 2  # 다른 SKU 2종
    # quantity 빈칸 → 1 로 보정
    qty_by_sku = {it["seller_sku"]: it["quantity"] for it in trk["items"]}
    assert qty_by_sku["MT-0550"] == 1
    assert qty_by_sku["MX-0001"] == 3


def test_quantity_and_tracking_preserved_as_string():
    """수량 비면 1, 송장번호 숫자로 들어와도 문자열 보존."""
    assert store.normalize_quantity("") == 1
    assert store.normalize_quantity(None) == 1
    assert store.normalize_quantity("0") == 1
    assert store.normalize_quantity("5") == 5
    # 큰 송장번호가 float 로 읽혀도 과학표기/.0 없이 보존
    assert store.clean_text(12345678901.0) == "12345678901"
    assert store.clean_text(float("nan")) == ""


def test_sku_summary():
    rows = [
        {"order_id": "A", "package_id": "PA", "tracking_id": "", "seller_sku": "MT-0320_3", "quantity": "1"},
        {"order_id": "B", "package_id": "PB", "tracking_id": "", "seller_sku": "MT-0320_3", "quantity": "1"},
        {"order_id": "C", "package_id": "PC", "tracking_id": "", "seller_sku": "MY-0001", "quantity": "5"},
    ]
    parcels = store.group_parcels(rows)
    summary = store.sku_summary(parcels)
    totals = {r["seller_sku"]: r["total_qty"] for r in summary}
    assert totals == {"MT-0320_3": 2, "MY-0001": 5}, totals


def test_missing_required_columns():
    """필수 컬럼 누락 감지: seller_sku 없거나 묶음키 전무."""
    mapping = store.resolve_columns(["Order ID", "Product Name", "Quantity"])
    missing = store.missing_required(mapping)
    assert any("Seller SKU" in m for m in missing), missing
    # 묶음키(order id) 는 있으므로 그 누락 메시지는 없어야 함
    assert not any("최소 1개" in m for m in missing), missing


def test_column_alias_strip_and_case():
    """헤더 앞뒤 공백/대소문자 무시하고 매핑."""
    mapping = store.resolve_columns(["  Order ID  ", "TRACKING ID", "Seller SKU", "Quantity"])
    assert "order_id" in mapping
    assert "tracking_id" in mapping
    assert "seller_sku" in mapping


def test_shopee_product_info_single():
    blob = ("[1] Product Name:[1+1=3] Mira's Kitchen Korean Grade Miracle Food "
            "Container Launch PROMO; Variation Name:3x 320ml; Price: RM 20.00; "
            "Quantity: 1; SKU Reference No.: MT-0320_3;")
    items = store.parse_shopee_product_info(blob)
    assert len(items) == 1, items
    it = items[0]
    assert it["seller_sku"] == "MT-0320_3", it
    assert it["quantity"] == 1, it
    assert it["variation"] == "3x 320ml", it
    assert "Mira's Kitchen" in it["product_name"], it


def test_shopee_product_info_multi():
    blob = ("[1] Product Name:Item A; Variation Name:S; Quantity: 2; "
            "SKU Reference No.: MT-0001; "
            "[2] Product Name:Item B; Variation Name:L; Quantity: 3; "
            "SKU Reference No.: MX-0002;")
    items = store.parse_shopee_product_info(blob)
    skus = {i["seller_sku"]: i["quantity"] for i in items}
    assert skus == {"MT-0001": 2, "MX-0002": 3}, skus


def test_shopee_product_info_empty():
    assert store.parse_shopee_product_info("") == []
    assert store.parse_shopee_product_info(None) == []


def _run_all():
    fns = [v for k, v in sorted(globals().items()) if k.startswith("test_") and callable(v)]
    for fn in fns:
        fn()
        print("PASS", fn.__name__)
    print(f"\n{len(fns)} tests passed.")


if __name__ == "__main__":
    _run_all()