import type { Map as MapLibreMap } from "maplibre-gl";
import type {
  BaseLayerOption,
  MapLayerControlItem,
  MapLayerControlVisual,
  MapLegendItem
} from "@/features/map/core";
import { MAP_STYLE_TOKENS } from "./map-colors";
import { SOURCE_GIS_MIN_ZOOM, SUPPLY_LAYER_VISUALS } from "./map-layer-visuals";
import {
  AVAILABLE_WATER_NETWORK_SOURCE_IDS,
  SUPPLY_LAYER_CATALOG,
  type WaterNetworkSourceId
} from "./sources";
import { SCADA_ICON_PATHS, SCADA_LAYER_CONTROL_ITEMS, SCADA_LAYER_GROUPS } from "./scada";
import { SUPPLY_ASSET_ICON_PATHS } from "./supply-icons";

export const INITIAL_LAYER_VISIBILITY: Record<string, boolean> = {
  ...Object.fromEntries(
    SUPPLY_LAYER_CATALOG.filter((layer) => layer.id !== "scada").map((layer) => [
      layer.id,
      layer.initialVisible
    ])
  ),
  ...Object.fromEntries(SCADA_LAYER_CONTROL_ITEMS.map((item) => [item.id, true]))
};

export type AnalysisOverlayLayer = {
  id: string;
  title: string;
  description: string;
  visible: boolean;
  disabled?: boolean;
  featureCount: number;
  color?: string;
};

const SOURCE_CONTROL_LABELS = Object.fromEntries(
  SUPPLY_LAYER_CATALOG.filter((layer) => layer.available).map((layer) => [layer.id, layer.label])
) as Record<WaterNetworkSourceId, string>;

type LayerControlPresentation = {
  description: string;
  minZoom?: number;
  collection?: string;
  collectionLabel?: string;
  visual: MapLayerControlVisual;
};

const LAYER_CONTROL_PRESENTATION: Record<
  Exclude<WaterNetworkSourceId, "scada">,
  LayerControlPresentation
> = {
  pipes: {
    description: "按管径分级",
    minZoom: 8.5,
    visual: {
      kind: "line-stack",
      colors: [
        MAP_STYLE_TOKENS.supply.pipeMinor,
        MAP_STYLE_TOKENS.supply.pipeMedium,
        MAP_STYLE_TOKENS.supply.pipeMajor
      ]
    }
  },
  junctions: {
    description: "拓扑连接点 · 随缩放细化",
    minZoom: SUPPLY_LAYER_VISUALS.junctions.minzoom,
    visual: { kind: "point", color: MAP_STYLE_TOKENS.supply.junction }
  },
  valves: {
    description: "控制设施 · 符号自动避让",
    minZoom: SUPPLY_LAYER_VISUALS.valves.minzoom,
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.valve }
  },
  reservoirs: {
    description: "供水设施",
    minZoom: 8.5,
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.reservoir }
  },
  pumps: {
    description: "加压设施",
    minZoom: SUPPLY_LAYER_VISUALS.pumps.minzoom,
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.pump }
  },
  tanks: {
    description: "调蓄设施",
    minZoom: SUPPLY_LAYER_VISUALS.tanks.minzoom,
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.tank }
  },
  water_quality_monitoring_points: {
    description: "灵敏度分析选点",
    minZoom: SUPPLY_LAYER_VISUALS.waterQuality.minzoom,
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.waterQuality }
  },
  fx_20200423_pipes: {
    description: "全口径管线",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200423_pipes,
    collection: "fx-water-assets-20200423",
    collectionLabel: "2020-04-23 · 全网除头桥快照",
    visual: {
      kind: "line-stack",
      colors: [
        MAP_STYLE_TOKENS.supply.sourcePipe,
        MAP_STYLE_TOKENS.supply.sourcePipeMedium,
        MAP_STYLE_TOKENS.supply.sourcePipeMajor
      ]
    }
  },
  fx_20200811_dn100_pipes: {
    description: "DN100 及以上",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200811_dn100_pipes,
    collection: "fx-pipe-inventory-20200811",
    collectionLabel: "2020-08-11 · 专项管线台账",
    visual: {
      kind: "line",
      color: MAP_STYLE_TOKENS.supply.sourcePipeInventory,
      dashed: true
    }
  },
  fx_20200423_valves: {
    description: "源设施台账",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200423_valves,
    collection: "fx-water-assets-20200423",
    collectionLabel: "2020-04-23 · 全网除头桥快照",
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceValve }
  },
  fx_20200423_drain_valves: {
    description: "源设施台账",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200423_drain_valves,
    collection: "fx-water-assets-20200423",
    collectionLabel: "2020-04-23 · 全网除头桥快照",
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceDrainValve }
  },
  fx_20200423_flow_meters: {
    description: "源仪表台账",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200423_flow_meters,
    collection: "fx-water-assets-20200423",
    collectionLabel: "2020-04-23 · 全网除头桥快照",
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceFlowMeter }
  },
  fx_20200423_hydrants: {
    description: "源设施台账",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200423_hydrants,
    collection: "fx-water-assets-20200423",
    collectionLabel: "2020-04-23 · 全网除头桥快照",
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceHydrant }
  },
  fx_20200423_service_connections: {
    description: "源设施台账",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200423_service_connections,
    collection: "fx-water-assets-20200423",
    collectionLabel: "2020-04-23 · 全网除头桥快照",
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceConnection }
  },
  fx_20200423_customer_meters: {
    description: "源水表台账",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200423_customer_meters,
    collection: "fx-water-assets-20200423",
    collectionLabel: "2020-04-23 · 全网除头桥快照",
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceCustomerMeter }
  },
  fx_20200423_non_residential_meters: {
    description: "源水表台账",
    minZoom: SOURCE_GIS_MIN_ZOOM.fx_20200423_non_residential_meters,
    collection: "fx-water-assets-20200423",
    collectionLabel: "2020-04-23 · 全网除头桥快照",
    visual: { kind: "image", imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceNonResidentialMeter }
  }
};

const MODEL_PIPE_LEGEND_GROUP = {
  group: "model-pipe",
  groupLabel: "模型管线",
  groupDescription: "颜色与线宽共同表示口径",
  groupLayout: "list"
} as const;
const MODEL_FACILITY_LEGEND_GROUP = {
  group: "model-facility",
  groupLabel: "供水设施",
  groupDescription: "拓扑节点与关键设施",
  groupLayout: "grid"
} as const;
const MONITORING_LEGEND_GROUP = {
  group: "monitoring",
  groupLabel: "监测点",
  groupDescription: "在线监测与水质选点",
  groupLayout: "grid"
} as const;
const SOURCE_APRIL_PIPE_LEGEND_GROUP = {
  group: "source-pipe-april",
  groupLabel: "原始 GIS 管线 · 2020-04-23",
  groupDescription: "全网快照，实线按已知口径分级",
  groupLayout: "list"
} as const;
const SOURCE_AUGUST_PIPE_LEGEND_GROUP = {
  group: "source-pipe-august",
  groupLabel: "原始 GIS 管线 · 2020-08-11",
  groupDescription: "DN100+ 专项台账，蓝色虚线",
  groupLayout: "list"
} as const;
const SOURCE_FACILITY_LEGEND_GROUP = {
  group: "source-facility",
  groupLabel: "原始 GIS 设施",
  groupDescription: "源设施与水表台账",
  groupLayout: "grid"
} as const;
const ANALYSIS_LEGEND_GROUP = {
  group: "analysis",
  groupLabel: "分析覆盖",
  groupDescription: "仅随空间分析成果显示",
  groupLayout: "list"
} as const;

export const MAP_LEGEND_ITEMS: MapLegendItem[] = [
  {
    id: "major-pipe",
    label: "DN600 及以上",
    description: "主干管",
    color: MAP_STYLE_TOKENS.supply.pipeMajor,
    lineWidth: 5,
    shape: "line",
    layerControlId: "pipes",
    ...MODEL_PIPE_LEGEND_GROUP
  },
  {
    id: "medium-pipe",
    label: "DN300-DN599",
    description: "次干管",
    color: MAP_STYLE_TOKENS.supply.pipeMedium,
    lineWidth: 3.5,
    shape: "line",
    layerControlId: "pipes",
    ...MODEL_PIPE_LEGEND_GROUP
  },
  {
    id: "minor-pipe",
    label: "DN300 以下",
    description: "配水支管",
    color: MAP_STYLE_TOKENS.supply.pipeMinor,
    lineWidth: 2,
    shape: "line",
    layerControlId: "pipes",
    ...MODEL_PIPE_LEGEND_GROUP
  },
  {
    id: "inactive-pipe",
    label: "停运管线",
    description: "虚线",
    color: MAP_STYLE_TOKENS.state.inactive,
    lineWidth: 2.5,
    shape: "dashed-line",
    layerControlId: "pipes",
    ...MODEL_PIPE_LEGEND_GROUP
  },
  {
    id: "junction",
    label: "节点",
    color: MAP_STYLE_TOKENS.supply.junction,
    shape: "dot",
    layerControlId: "junctions",
    ...MODEL_FACILITY_LEGEND_GROUP
  },
  {
    id: "valve",
    label: "阀门",
    color: MAP_STYLE_TOKENS.supply.valve,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.valve,
    layerControlId: "valves",
    ...MODEL_FACILITY_LEGEND_GROUP
  },
  {
    id: "reservoir",
    label: "水库",
    color: MAP_STYLE_TOKENS.supply.reservoir,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.reservoir,
    layerControlId: "reservoirs",
    ...MODEL_FACILITY_LEGEND_GROUP
  },
  {
    id: "pump",
    label: "水泵",
    color: MAP_STYLE_TOKENS.supply.pump,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.pump,
    layerControlId: "pumps",
    ...MODEL_FACILITY_LEGEND_GROUP
  },
  {
    id: "tank",
    label: "水箱",
    color: MAP_STYLE_TOKENS.supply.tank,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.tank,
    layerControlId: "tanks",
    ...MODEL_FACILITY_LEGEND_GROUP
  },
  {
    id: "scada-flow",
    label: "流量监测",
    color: MAP_STYLE_TOKENS.supply.scadaFlow,
    imageSrc: SCADA_ICON_PATHS.flow,
    layerControlId: "scada-flow",
    ...MONITORING_LEGEND_GROUP
  },
  {
    id: "scada-pressure",
    label: "压力监测",
    color: MAP_STYLE_TOKENS.supply.scadaPressure,
    imageSrc: SCADA_ICON_PATHS.pressure,
    layerControlId: "scada-pressure",
    ...MONITORING_LEGEND_GROUP
  },
  {
    id: "water-quality-monitoring",
    label: "水质监测",
    color: MAP_STYLE_TOKENS.supply.waterQuality,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.waterQuality,
    layerControlId: "water_quality_monitoring_points",
    ...MONITORING_LEGEND_GROUP
  },
  {
    id: "source-major-pipe",
    label: "DN600 及以上",
    color: MAP_STYLE_TOKENS.supply.sourcePipeMajor,
    lineWidth: 5,
    shape: "line",
    layerControlId: "fx_20200423_pipes",
    ...SOURCE_APRIL_PIPE_LEGEND_GROUP
  },
  {
    id: "source-medium-pipe",
    label: "DN300-DN599",
    color: MAP_STYLE_TOKENS.supply.sourcePipeMedium,
    lineWidth: 3.5,
    shape: "line",
    layerControlId: "fx_20200423_pipes",
    ...SOURCE_APRIL_PIPE_LEGEND_GROUP
  },
  {
    id: "source-minor-pipe",
    label: "DN300 以下",
    color: MAP_STYLE_TOKENS.supply.sourcePipe,
    lineWidth: 2,
    shape: "line",
    layerControlId: "fx_20200423_pipes",
    ...SOURCE_APRIL_PIPE_LEGEND_GROUP
  },
  {
    id: "source-unknown-pipe",
    label: "未标注口径",
    color: MAP_STYLE_TOKENS.state.inactive,
    lineWidth: 2,
    shape: "line",
    layerControlId: "fx_20200423_pipes",
    ...SOURCE_APRIL_PIPE_LEGEND_GROUP
  },
  {
    id: "source-inventory-pipe",
    label: "DN100 及以上",
    color: MAP_STYLE_TOKENS.supply.sourcePipeInventory,
    lineWidth: 3,
    shape: "dashed-line",
    layerControlId: "fx_20200811_dn100_pipes",
    ...SOURCE_AUGUST_PIPE_LEGEND_GROUP
  },
  {
    id: "source-valve",
    label: "GIS 阀门",
    color: MAP_STYLE_TOKENS.supply.sourceValve,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceValve,
    layerControlId: "fx_20200423_valves",
    ...SOURCE_FACILITY_LEGEND_GROUP
  },
  {
    id: "source-drain-valve",
    label: "排水阀",
    color: MAP_STYLE_TOKENS.supply.sourceDrainValve,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceDrainValve,
    layerControlId: "fx_20200423_drain_valves",
    ...SOURCE_FACILITY_LEGEND_GROUP
  },
  {
    id: "source-flow-meter",
    label: "流量仪",
    color: MAP_STYLE_TOKENS.supply.sourceFlowMeter,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceFlowMeter,
    layerControlId: "fx_20200423_flow_meters",
    ...SOURCE_FACILITY_LEGEND_GROUP
  },
  {
    id: "source-hydrant",
    label: "消火栓",
    color: MAP_STYLE_TOKENS.supply.sourceHydrant,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceHydrant,
    layerControlId: "fx_20200423_hydrants",
    ...SOURCE_FACILITY_LEGEND_GROUP
  },
  {
    id: "source-connection",
    label: "接水点",
    color: MAP_STYLE_TOKENS.supply.sourceConnection,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceConnection,
    layerControlId: "fx_20200423_service_connections",
    ...SOURCE_FACILITY_LEGEND_GROUP
  },
  {
    id: "source-customer-meter",
    label: "用户水表",
    color: MAP_STYLE_TOKENS.supply.sourceCustomerMeter,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceCustomerMeter,
    layerControlId: "fx_20200423_customer_meters",
    ...SOURCE_FACILITY_LEGEND_GROUP
  },
  {
    id: "source-non-residential-meter",
    label: "非居民水表",
    color: MAP_STYLE_TOKENS.supply.sourceNonResidentialMeter,
    imageSrc: SUPPLY_ASSET_ICON_PATHS.sourceNonResidentialMeter,
    layerControlId: "fx_20200423_non_residential_meters",
    ...SOURCE_FACILITY_LEGEND_GROUP
  }
];

export function createVisibleMapLegendItems(
  layerItems: readonly MapLayerControlItem[]
) {
  const visibleLayerIds = new Set(layerItems.filter((item) => item.visible).map((item) => item.id));
  return [
    ...MAP_LEGEND_ITEMS.filter((item) =>
      item.layerControlId ? visibleLayerIds.has(item.layerControlId) : true
    ),
    ...layerItems.filter((item) => item.group === "analysis" && item.visible).map((item) => ({
      id: item.id,
      label: item.label,
      description: item.description,
      color: item.visual?.color ?? MAP_STYLE_TOKENS.state.risk,
      shape: "area" as const,
      layerControlId: item.id,
      ...ANALYSIS_LEGEND_GROUP
    }))
  ];
}

export const BASE_LAYER_GROUPS = {
  "mapbox-light": ["mapbox-light"],
  "mapbox-satellite": ["mapbox-satellite"],
  "tianditu-vector": ["tianditu-vector", "tianditu-vector-annotation"],
  "tianditu-image": ["tianditu-image", "tianditu-image-annotation"]
} as const;

export const BASE_LAYER_IDS = Object.values(BASE_LAYER_GROUPS).flat();

export function applyBaseLayerVisibility(map: MapLibreMap, activeBaseLayerId: string) {
  const activeLayerIds = new Set<string>(
    BASE_LAYER_GROUPS[activeBaseLayerId as keyof typeof BASE_LAYER_GROUPS] ?? []
  );
  BASE_LAYER_IDS.forEach((layerId) => {
    if (map.getLayer(layerId)) {
      map.setLayoutProperty(
        layerId,
        "visibility",
        activeLayerIds.has(layerId) ? "visible" : "none"
      );
    }
  });
}

export const BASE_LAYER_OPTIONS: BaseLayerOption[] = [
  {
    id: "mapbox-light",
    label: "浅色",
    description: "道路底图",
    swatchClassName: "bg-gradient-to-br from-slate-50 via-slate-100 to-blue-100"
  },
  {
    id: "mapbox-satellite",
    label: "影像",
    description: "卫星街道",
    swatchClassName: "bg-gradient-to-br from-emerald-950 via-emerald-700 to-yellow-200"
  },
  {
    id: "tianditu-vector",
    label: "天地图矢量",
    description: "矢量与中文注记",
    swatchClassName: "bg-gradient-to-br from-sky-50 via-stone-100 to-emerald-100"
  },
  {
    id: "tianditu-image",
    label: "天地图影像",
    description: "影像与中文注记",
    swatchClassName: "bg-gradient-to-br from-slate-950 via-emerald-800 to-stone-300"
  },
  {
    id: "none",
    label: "无底图",
    description: "仅业务图层",
    swatchClassName: "bg-slate-100"
  }
];

export function createLayerControlItems(
  layerVisibility: Record<string, boolean>,
  availableSourceIds: readonly WaterNetworkSourceId[] = AVAILABLE_WATER_NETWORK_SOURCE_IDS,
  featureCounts: Partial<Record<WaterNetworkSourceId, number>> = {},
  analysisOverlays: readonly AnalysisOverlayLayer[] = []
): MapLayerControlItem[] {
  const available = new Set<WaterNetworkSourceId>(availableSourceIds);
  const catalogItems = SUPPLY_LAYER_CATALOG.filter(
    (layer) => layer.available && layer.id !== "scada" && available.has(layer.id)
  );
  const modelItems = catalogItems.filter((layer) => layer.group === "model");
  const monitoringItems = catalogItems.filter((layer) => layer.group === "monitoring");
  const sourceGisItems = catalogItems.filter((layer) => layer.group === "source-gis");
  return [
    ...modelItems.map((layer) => ({
      id: layer.id,
      label: SOURCE_CONTROL_LABELS[layer.id],
      ...LAYER_CONTROL_PRESENTATION[layer.id as Exclude<WaterNetworkSourceId, "scada">],
      featureCount: featureCounts[layer.id],
      visible: layerVisibility[layer.id],
      group: "model",
      groupLabel: "管网模型",
      groupDescription: "计算模型与基础设施"
    })),
    ...(available.has("scada")
      ? SCADA_LAYER_CONTROL_ITEMS.map((item) => ({
          id: item.id,
          label: item.label,
          description: item.description,
          minZoom: item.minZoom,
          visual: {
            kind: "image" as const,
            imageSrc:
              item.id === "scada-pressure" ? SCADA_ICON_PATHS.pressure : SCADA_ICON_PATHS.flow
          },
          visible: layerVisibility[item.id],
          group: "monitoring",
          groupLabel: "监测点",
          groupDescription: "在线监测与分析选点"
        }))
      : []),
    ...monitoringItems.map((layer) => ({
      id: layer.id,
      label: SOURCE_CONTROL_LABELS[layer.id],
      ...LAYER_CONTROL_PRESENTATION[layer.id as Exclude<WaterNetworkSourceId, "scada">],
      featureCount: featureCounts[layer.id],
      visible: layerVisibility[layer.id],
      group: "monitoring",
      groupLabel: "监测点",
      groupDescription: "在线监测与分析选点"
    })),
    ...sourceGisItems.map((layer) => ({
      id: layer.id,
      label: SOURCE_CONTROL_LABELS[layer.id],
      ...LAYER_CONTROL_PRESENTATION[layer.id as Exclude<WaterNetworkSourceId, "scada">],
      featureCount: featureCounts[layer.id],
      visible: layerVisibility[layer.id],
      group: "source-gis",
      groupLabel: "GIS 原始数据",
      groupDescription: "源数据快照与专项台账",
      groupDefaultOpen: false
    })),
    ...analysisOverlays.map((overlay) => ({
      id: overlay.id,
      label: overlay.title,
      description: overlay.description,
      featureCount: overlay.featureCount,
      visual: { kind: "area" as const, color: overlay.color ?? MAP_STYLE_TOKENS.state.risk },
      visible: overlay.visible,
      disabled: overlay.disabled,
      group: "analysis",
      groupLabel: "分析覆盖",
      groupDescription: "Agent 生成的范围与分析成果"
    }))
  ];
}

export function getWorkbenchLayerIds(
  map: Pick<MapLibreMap, "getLayer" | "getStyle">,
  groupId: string
) {
  if (groupId in SCADA_LAYER_GROUPS) {
    return SCADA_LAYER_GROUPS[groupId as keyof typeof SCADA_LAYER_GROUPS].filter((layerId) =>
      map.getLayer(layerId)
    );
  }
  if (isWaterNetworkSourceId(groupId)) {
    return map
      .getStyle()
      .layers.filter((layer) => "source" in layer && layer.source === groupId)
      .map((layer) => layer.id);
  }

  return [];
}

function isWaterNetworkSourceId(value: string): value is WaterNetworkSourceId {
  return (AVAILABLE_WATER_NETWORK_SOURCE_IDS as readonly string[]).includes(value);
}