from typing import Any

from app.strategies.impl._supply_gap_base import SupplyGapStrategyBase


class SupplyGapStrategy(SupplyGapStrategyBase):
    """当下供需gap：demand_name = merge_leve2 + 空格 + name。"""

    strategy_id = "supply_gap"
    name = "当下供需gap"
    version = "1.0.0"

    def build_demand_name(self, row: dict[str, Any]) -> str:
        merge_leve2 = str(row.get("merge_leve2") or "").strip()
        name = str(row.get("name") or "").strip()
        if merge_leve2 and name:
            return f"{merge_leve2} {name}"
        return merge_leve2 or name