"""`dwg_review.phases.report` 单元测试。"""

import json

from dwg_review.phases.report import format_finding, save_report, summarize
from tests.fakes import FakeLlmClient, make_ctx


def issue(**over):
    base = {
        "frame": 1, "category": "文字", "severity": "high", "message": "文字重叠",
        "handle": "A1", "source": "llm", "verified": True,
    }
    base.update(over)
    return base


def findings_fixture():
    return [
        {
            "frame": 1, "sheet": "A1", "summary": "该图框存在文字重叠",
            "issues": [issue()],
            "counts": {"deterministic": 0, "llm": 1, "unverified": 0},
        },
        {
            "frame": 2, "sheet": "A3", "summary": "未发现明显问题",
            "issues": [],
            "counts": {"deterministic": 0, "llm": 0, "unverified": 0},
        },
    ]


# ---------------------------------------------------------------------------
#  format_finding
# ---------------------------------------------------------------------------
def test_format_finding_renders_summary_and_issues():
    text = format_finding(findings_fixture()[0])
    assert "图框 1" in text and "图幅 A1" in text
    assert "该图框存在文字重叠" in text
    assert "[high][LLM] 文字重叠" in text
    assert "handle=A1" in text


def test_format_finding_marks_deterministic_source():
    finding = {"frame": 1, "sheet": "A1", "summary": "s",
               "issues": [issue(source="deterministic", handle="Z1")]}
    assert "[确定性]" in format_finding(finding)


def test_format_finding_marks_unverified():
    finding = {"frame": 1, "sheet": "A1", "summary": "s",
               "issues": [issue(handle=None, verified=False)]}
    text = format_finding(finding)
    assert "未在证据中定位" in text
    assert "handle=" not in text


def test_format_finding_tolerates_missing_keys():
    text = format_finding({})
    assert "图框 None" in text  # 不再 KeyError（修复既有硬下标 gap）


# ---------------------------------------------------------------------------
#  summarize
# ---------------------------------------------------------------------------
def test_summarize_empty_returns_message_without_llm():
    llm = FakeLlmClient(text="不应被调用")
    ctx = make_ctx(llm=llm)
    out = summarize(ctx, [], log=lambda *a: None)
    assert "未识别到可审查的图框" in out
    assert llm.calls == []


def test_summarize_uses_chat_text():
    llm = FakeLlmClient(text="## 总报告")
    ctx = make_ctx(llm=llm)
    assert summarize(ctx, findings_fixture(), log=lambda *a: None) == "## 总报告"
    assert len(llm.calls) == 1
    assert "图框 1" in llm.calls[0]["user"]
    assert "图框 2" in llm.calls[0]["user"]


def test_summarize_input_includes_issue_lines():
    llm = FakeLlmClient(text="x")
    ctx = make_ctx(llm=llm)
    summarize(ctx, findings_fixture(), log=lambda *a: None)
    user = llm.calls[0]["user"]
    assert "[high][LLM] 文字重叠" in user


def test_summarize_falls_back_to_raw_input_on_error():
    class Boom(FakeLlmClient):
        def chat_text(self, system, user, **kwargs):
            raise RuntimeError("汇总炸了")

    logs = []
    ctx = make_ctx(llm=Boom())
    out = summarize(ctx, findings_fixture(), log=logs.append)
    assert "图框 1" in out and "图框 2" in out
    assert any("汇总失败" in line for line in logs)


def test_summarize_tolerates_finding_without_frame_key():
    # 修复既有硬下标 gap：缺 frame 键不再 KeyError
    llm = FakeLlmClient(text="ok")
    ctx = make_ctx(llm=llm)
    out = summarize(ctx, [{"summary": "无 frame 键", "issues": []}], log=lambda *a: None)
    assert out == "ok"


# ---------------------------------------------------------------------------
#  save_report
# ---------------------------------------------------------------------------
def test_save_report_writes_md_and_json(tmp_reports):
    findings = findings_fixture()
    plan = {"frames": [{"bbox": [0, 0, 10, 10]}]}
    issues = [issue()]

    md_path, json_path = save_report("# 报告", findings, plan, issues, log=lambda *a: None)

    assert md_path.exists() and json_path.exists()
    assert md_path.read_text(encoding="utf-8") == "# 报告"
    data = json.loads(json_path.read_text(encoding="utf-8"))
    assert data["findings"] == findings
    assert data["issues"] == issues
    assert data["frames"] == plan["frames"]
    assert "generated_at" in data


def test_save_report_derives_issues_from_findings(tmp_reports):
    findings = findings_fixture()
    _, json_path = save_report("md", findings, {"frames": []}, log=lambda *a: None)
    data = json.loads(json_path.read_text(encoding="utf-8"))
    assert data["issues"] == [issue()]  # 拍平自 findings


def test_save_report_creates_missing_directory(tmp_path, monkeypatch):
    from dwg_review import config

    target = tmp_path / "deep" / "nested"
    monkeypatch.setattr(config, "REPORT_DIR", target)
    save_report("md", [], {"frames": []}, log=lambda *a: None)
    assert target.is_dir()