from __future__ import annotations

TASK_RUN_MODE_STABLE = "stable"
TASK_RUN_MODE_OPTIMIZED = "optimized"

TASK_RUN_MODES = (
    TASK_RUN_MODE_STABLE,
    TASK_RUN_MODE_OPTIMIZED,
)

TASK_RUN_MODE_LABELS = {
    TASK_RUN_MODE_STABLE: "稳定版",
    TASK_RUN_MODE_OPTIMIZED: "优化版",
}

TASK_RUN_MODE_DESCRIPTIONS = {
    TASK_RUN_MODE_STABLE: "保持当前稳定流程，优先兼容性与成功率。",
    TASK_RUN_MODE_OPTIMIZED: "复用选课页面与分类页签，减少重复加载；异常时自动回退稳定版。",
}


def normalize_task_run_mode(value: str | None) -> str:
    normalized = str(value or "").strip().lower()
    if normalized in TASK_RUN_MODES:
        return normalized
    return TASK_RUN_MODE_STABLE


def build_task_run_mode_options() -> list[dict[str, str]]:
    return [
        {
            "value": mode,
            "label": TASK_RUN_MODE_LABELS[mode],
            "description": TASK_RUN_MODE_DESCRIPTIONS[mode],
        }
        for mode in TASK_RUN_MODES
    ]