# -*- coding: utf-8 -*-
"""驾驶舱布局 JSON Schema 校验/解析测试（issue #50 / PRD 5.5）。

覆盖：
1. PRD 5.5 示例布局（氯化车间）合法 → 校验通过、可解析为 ``CockpitLayout``；
2. 现有树脂模板资产兼容（``iAOP-cockpit-layout-v1``）；
3. 各类非法情况：错误的 $schema / theme / type、缺失必填、坐标越界、
   空组件清单、栅格列数非法、特有字段缺失；
4. 性能提示：组件数 ≥ 30 触发 ``perf_hint``；
5. ``load_layout`` 校验失败抛 ``LayoutValidationError`` 并携带全部错误。
"""
from __future__ import annotations

import copy
import unittest

from cockpit import (  # type: ignore[import-not-found]
    LAYOUT_SCHEMA_ID,
    LAYOUT_SCHEMA_VERSION,
    PERF_WIDGET_THRESHOLD,
    VALID_THEMES,
    VALID_WIDGET_TYPES,
    CockpitLayout,
    LayoutValidationError,
    Widget,
    load_layout,
    validate_layout,
)


def _valid_layout() -> dict:
    """返回 PRD 5.5 示例（氯化车间）合法布局。"""
    return {
        "$schema": "iAOP-cockpit-layout-v1",
        "title": "氯化车间驾驶舱",
        "theme": "dark",
        "widgets": [
            {"type": "process_view", "src": "ti_four_state.svg", "x": 0, "y": 0, "w": 6, "h": 4},
            {"type": "trend", "bind": "CLF-01.TEMP", "x": 6, "y": 0, "w": 6, "h": 2},
            {"type": "kpi_card", "metric": "Ti_purity", "label": "Ti 纯度", "x": 6, "y": 2, "w": 3, "h": 2},
            {"type": "alarm_panel", "x": 0, "y": 4, "w": 12, "h": 3},
            {"type": "nl_query", "x": 9, "y": 2, "w": 3, "h": 2},
        ],
    }


def _resin_like_layout() -> dict:
    """模拟 templates/resin/dashboard/cockpit.resin.yaml 的结构（已引用 v1 schema）。"""
    return {
        "$schema": "iAOP-cockpit-layout-v1",
        "title": "吸附树脂车间驾驶舱",
        "theme": "dark",
        "widgets": [
            {"type": "process_view", "src": "resin_four_state.svg", "x": 0, "y": 0, "w": 12, "h": 4,
             "description": "四状态工艺流程"},
            {"type": "trend", "bind": "R-801.TEMP", "x": 0, "y": 4, "w": 6, "h": 2},
            {"type": "kpi_card", "metric": "resin_exchange_capacity", "label": "交换容量",
             "x": 0, "y": 6, "w": 3, "h": 2},
            {"type": "alarm_panel", "x": 0, "y": 8, "w": 9, "h": 3},
            {"type": "nl_query", "x": 9, "y": 8, "w": 3, "h": 3},
        ],
    }


class TestSchemaConstants(unittest.TestCase):
    """版本标识与合法性集合。"""

    def test_schema_id_matches_template_reference(self):
        # templates/resin/dashboard/cockpit.resin.yaml 引用的 $schema 必须与此处一致
        self.assertEqual(LAYOUT_SCHEMA_ID, "iAOP-cockpit-layout-v1")
        self.assertEqual(LAYOUT_SCHEMA_VERSION, 1)

    def test_valid_themes(self):
        self.assertEqual(set(VALID_THEMES), {"dark", "light"})

    def test_valid_widget_types_cover_prd_capabilities(self):
        # PRD 5.5 能力：四状态流程视图 / 实时趋势 / KPI卡片 / 告警面板 / NL查询入口
        for required in ("process_view", "trend", "kpi_card", "alarm_panel", "nl_query"):
            self.assertIn(required, VALID_WIDGET_TYPES)


class TestValidateValidLayouts(unittest.TestCase):
    """合法布局应通过校验。"""

    def test_prd_example_is_valid(self):
        res = validate_layout(_valid_layout())
        self.assertTrue(res.ok, msg=f"expected ok, errors={res.errors}")
        self.assertEqual(res.widget_count, 5)
        self.assertIsNone(res.perf_hint)

    def test_resin_like_layout_is_valid(self):
        # 现有树脂模板资产兼容（向后兼容关键）
        res = validate_layout(_resin_like_layout())
        self.assertTrue(res.ok, msg=f"errors={res.errors}")

    def test_light_theme_valid(self):
        data = _valid_layout()
        data["theme"] = "light"
        self.assertTrue(validate_layout(data).ok)

    def test_custom_grid_columns_valid(self):
        data = _valid_layout()
        data["grid"] = {"columns": 24}
        self.assertTrue(validate_layout(data).ok)


class TestValidateInvalidLayouts(unittest.TestCase):
    """各类非法布局应在 errors 中给出对应原因。"""

    def test_root_not_dict(self):
        res = validate_layout(["not", "a", "dict"])
        self.assertFalse(res.ok)

    def test_wrong_schema(self):
        data = _valid_layout()
        data["$schema"] = "iAOP-cockpit-layout-v0"
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("$schema" in e for e in res.errors))

    def test_missing_schema(self):
        data = _valid_layout()
        del data["$schema"]
        self.assertFalse(validate_layout(data).ok)

    def test_invalid_theme(self):
        data = _valid_layout()
        data["theme"] = "neon"
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("theme" in e for e in res.errors))

    def test_empty_title(self):
        data = _valid_layout()
        data["title"] = "   "
        self.assertFalse(validate_layout(data).ok)

    def test_empty_widgets(self):
        data = _valid_layout()
        data["widgets"] = []
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("widgets" in e and "空" in e for e in res.errors))

    def test_unknown_widget_type(self):
        data = _valid_layout()
        data["widgets"][0]["type"] = "magic_chart"
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("type" in e and "非法" in e for e in res.errors))

    def test_missing_required_widget_field_process_view(self):
        data = _valid_layout()
        del data["widgets"][0]["src"]  # process_view 要求 src
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("src" in e for e in res.errors))

    def test_missing_required_widget_field_trend_bind(self):
        data = _valid_layout()
        del data["widgets"][1]["bind"]  # trend 要求 bind
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("bind" in e for e in res.errors))

    def test_missing_required_widget_field_kpi_metric(self):
        data = _valid_layout()
        del data["widgets"][2]["metric"]  # kpi_card 要求 metric
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("metric" in e for e in res.errors))

    def test_negative_x(self):
        data = _valid_layout()
        data["widgets"][0]["x"] = -1
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("x" in e and "≥ 0" in e for e in res.errors))

    def test_zero_w(self):
        data = _valid_layout()
        data["widgets"][0]["w"] = 0
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("w" in e and "> 0" in e for e in res.errors))

    def test_bool_not_accepted_as_int(self):
        # bool 是 int 子类，栅格坐标不应接受 True/False
        data = _valid_layout()
        data["widgets"][0]["x"] = True
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("x" in e and "bool" in e for e in res.errors))

    def test_grid_columns_non_positive(self):
        data = _valid_layout()
        data["grid"] = {"columns": 0}
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("columns" in e and "> 0" in e for e in res.errors))

    def test_overflow_grid_warning(self):
        # x+w 超过栅格列数 → 记一条提示（用于配置台纠正），仍可在 errors 中体现
        data = _valid_layout()
        data["widgets"][0]["x"] = 10
        data["widgets"][0]["w"] = 6  # 10+6=16 > 12
        res = validate_layout(data)
        self.assertTrue(any("超过栅格列数" in e for e in res.errors))

    def test_widget_not_dict(self):
        data = _valid_layout()
        data["widgets"][0] = "broken"
        res = validate_layout(data)
        self.assertFalse(res.ok)
        self.assertTrue(any("对象" in e for e in res.errors))


class TestPerfHint(unittest.TestCase):
    """组件数 ≥ 30 时应给出性能提示（PRD 5.5 复杂仪表盘性能）。"""

    def test_perf_hint_when_many_widgets(self):
        data = _valid_layout()
        data["widgets"] = [
            {"type": "kpi_card", "metric": f"m{i}", "x": 0, "y": 0, "w": 1, "h": 1}
            for i in range(PERF_WIDGET_THRESHOLD)
        ]
        res = validate_layout(data)
        # 全部 kpi_card 合法 → ok=True，但有性能提示
        self.assertEqual(res.widget_count, PERF_WIDGET_THRESHOLD)
        self.assertIsNotNone(res.perf_hint)
        self.assertIn("虚拟滚动", res.perf_hint or "")

    def test_no_perf_hint_below_threshold(self):
        data = _valid_layout()
        res = validate_layout(data)
        self.assertIsNone(res.perf_hint)


class TestLoadLayout(unittest.TestCase):
    """load_layout 解析合法资产为 CockpitLayout，非法时抛异常。"""

    def test_load_valid_returns_model(self):
        layout = load_layout(_valid_layout())
        self.assertIsInstance(layout, CockpitLayout)
        self.assertEqual(layout.title, "氯化车间驾驶舱")
        self.assertEqual(layout.theme, "dark")
        self.assertEqual(layout.schema, LAYOUT_SCHEMA_ID)
        self.assertEqual(len(layout.widgets), 5)
        # 栅格默认 12 列
        self.assertEqual(layout.grid.columns, 12)
        # 组件字段映射
        pv = layout.widgets[0]
        self.assertIsInstance(pv, Widget)
        self.assertEqual(pv.type, "process_view")
        self.assertEqual(pv.src, "ti_four_state.svg")
        kpi = layout.widgets[2]
        self.assertEqual(kpi.metric, "Ti_purity")
        self.assertEqual(kpi.label, "Ti 纯度")

    def test_load_invalid_raises_with_errors(self):
        data = _valid_layout()
        data["theme"] = "neon"
        del data["widgets"][1]["bind"]
        with self.assertRaises(LayoutValidationError) as cm:
            load_layout(data)
        # 异常应携带全部错误（不止一条）
        self.assertGreaterEqual(len(cm.exception.errors), 2)

    def test_roundtrip_to_dict(self):
        # 解析后再序列化，结构应可再次通过校验（round-trip 稳定）
        layout = load_layout(_valid_layout())
        again = validate_layout(layout.to_dict())
        self.assertTrue(again.ok, msg=f"roundtrip errors={again.errors}")

    def test_roundtrip_preserves_resin_layout(self):
        layout = load_layout(_resin_like_layout())
        again = validate_layout(layout.to_dict())
        self.assertTrue(again.ok, msg=f"errors={again.errors}")
        self.assertEqual(layout.title, "吸附树脂车间驾驶舱")


class TestDeepCopySafety(unittest.TestCase):
    """校验不应污染入参；调用方可继续使用原 dict。"""

    def test_validate_does_not_mutate_input(self):
        data = _valid_layout()
        snapshot = copy.deepcopy(data)
        validate_layout(data)
        self.assertEqual(data, snapshot)


if __name__ == "__main__":
    unittest.main()