"""自检场景生成（测试端专用）：委托 referee.scenes，映射本队配置。

真值只进入测试与 CLI ``--self-test`` 入口，策略端仅见模拟器响应；
默认采用满足题面范围的自建随机场景：源总数 10~16 随机、位置在目标圆域内
均匀分布、频道互异（1..20 抽样）、有效接收半径 [1000,1500] 均匀。
均匀分布是测试假设，题面并未规定官方场景的概率分布。
"""

from __future__ import annotations

from referee import scenes as _referee_scenes

from ..config import ProblemConfig


def referee_spec(config: ProblemConfig = ProblemConfig(), *,
                 max_real_duration_s: float | None = None):
    """把本队 ProblemConfig 的题面常量映射为 referee 的 Spec。

    max_real_duration_s 仅用于 --self-test 的实机预算覆盖（默认 1800s）；
    正式对接以服务器 /enter 返回为准，评测机默认保持题面 1200s。
    """
    from referee import CostSpec, FieldSpec, Spec
    field, cost = config.field, config.cost
    return Spec(
        field=FieldSpec(
            omega_radius_m=field.omega_radius_m,
            channel_min=field.channel_min, channel_max=field.channel_max,
            source_count_min=field.source_count_min,
            source_count_max=field.source_count_max,
            r_eff_min_m=field.r_eff_min_m, r_eff_max_m=field.r_eff_max_m,
            near_radius_m=field.near_radius_m, clear_radius_m=field.clear_radius_m,
            bearing_error_half_deg=field.bearing_error_half_deg,
            bearing_decimals=field.bearing_decimals,
            coord_abs_limit_m=field.coord_abs_limit_m,
            directional_half_angle_deg=field.directional_half_angle_deg,
            max_virtual_duration_s=field.max_virtual_duration_s,
            max_real_duration_s=(field.max_real_duration_s if max_real_duration_s is None
                                 else max_real_duration_s),
            test_window_s=field.test_window_s),
        cost=CostSpec(speed_mps=cost.speed_mps, measure_s=cost.measure_s,
                      switch_s=cost.switch_s, clear_success_s=cost.clear_success_s,
                      clear_fail_s=cost.clear_fail_s))


def random_omni_scene(seed: int = 20260910, count: int | None = None,
                      config: ProblemConfig = ProblemConfig()):
    """全向源场景 [题面 问题3]；签名沿用重构前 mcm26b.sim.scenes。"""
    return _referee_scenes.random_omni_scene(seed, count, referee_spec(config))


def mixed_scene(seed: int = 20260910, count: int | None = None,
                directional: int = 3, config: ProblemConfig = ProblemConfig()):
    """问题4混合场景：count 个源中 directional 个为定向源。"""
    return _referee_scenes.mixed_scene(seed, count, directional, referee_spec(config))