"""Architect 渲染三档裁剪（T-M3，采纳 llmrouter pinch keep/summarize/drop 设计）。"""
from router_system.workspace import Workspace

_GOAL = "用 Python 实现快速排序并分析时间复杂度"

_BRIEF = {
    "goal": _GOAL, "constraints": ["标准库"], "tags": ["code"],
    "acceptance": [{"id": "a1", "check": "可运行", "machine_checkable": True}],
    "plan": [{"id": "s1", "task": "实现", "deps": [], "done_criteria": "过"}],
}


def _ws_with_archive():
    ws = Workspace.new(request_id="abc123def456", query=_GOAL,
                       api_token_cap=8000, rounds_cap=6)
    ws.apply_brief(_BRIEF)
    relevant = ("s1: 完成快速排序实现，基准选取三数取中，递归深度优化，"
                "平均时间复杂度 O(n log n) 分析见附件。" + "快排边界处理细节" * 50)
    lines = [f"sX{i}: 无关行{i}，今日食堂菜单有红烧肉、番茄炒蛋与清炒时蔬，"
             f"周末计划去郊外徒步露营并整理旅行照片。" + "生活琐事记录" * 50
             + f"独特结尾标记{i}号"  # 唯一尾串：判断"该行是否还被输出"
             for i in range(7)]
    # 相关行放在中间：不在最新 4 行下限保护区内，检验相关性而非新近度
    ws._data["archive"] = lines[:3] + [relevant] + lines[3:]
    return ws, relevant, lines


def test_trim_keeps_relevant_line_full():
    """高相关行全文保留，低相关行被丢弃/截断（尾段不再出现在输出）。"""
    ws, relevant, lines = _ws_with_archive()
    out = ws.render_for_architect()
    # 相关行全文（含尾段独特内容）仍在
    assert relevant[-40:] in out
    # 至少一条低相关行的尾段消失（被丢或被截为摘要）
    assert lines[0][-40:] not in out


def test_trim_respects_floor_of_four_lines():
    """任何情况下至少保留 4 行（与旧实现下限一致）。"""
    ws, _, lines = _ws_with_archive()
    out = ws.render_for_architect()
    archive_shown = out.split("== archive ==")[1].strip().splitlines()
    assert len(archive_shown) >= 4


def test_render_deterministic():
    """同输入两次渲染逐字节一致（裁剪决策确定性）。"""
    ws1, _, _ = _ws_with_archive()
    ws2, _, _ = _ws_with_archive()
    assert ws1.render_for_architect() == ws2.render_for_architect()


def test_under_budget_untouched():
    """预算内不触发裁剪：archive 行原样出现、无截断省略号。"""
    ws = Workspace.new(request_id="abc123def456", query="写个快排",
                       api_token_cap=8000, rounds_cap=6)
    ws.apply_brief(_BRIEF)
    ws._data["archive"] = ["s1: 完成（产出: a://s1.py）"]
    out = ws.render_for_architect()
    assert "s1: 完成（产出: a://s1.py）" in out