import type { MapGeoJSONFeature } from "maplibre-gl";
import type { DetailFeature } from "../types";
import { formatValue } from "../utils/format-value";
import {
  SOURCE_LAYERS,
  WATER_NETWORK_SOURCE_IDS,
  isSourceGisSourceId,
  type GeoServerWaterNetworkSourceId,
  type WaterNetworkSourceId
} from "./sources";

export function getFeatureId(feature: MapGeoJSONFeature) {
  const raw = feature.properties?.device_id ?? feature.properties?.id ?? feature.id;
  return raw === undefined || raw === null ? "" : String(raw);
}

export function getWaterNetworkSourceId(feature: MapGeoJSONFeature): WaterNetworkSourceId | null {
  if ((WATER_NETWORK_SOURCE_IDS as readonly string[]).includes(feature.source)) {
    return feature.source as WaterNetworkSourceId;
  }

  for (const [sourceId, sourceLayer] of Object.entries(SOURCE_LAYERS) as [GeoServerWaterNetworkSourceId, string][]) {
    if (feature.sourceLayer === sourceLayer) {
      return sourceId;
    }
  }

  return null;
}

export function toDetailFeature(feature: MapGeoJSONFeature): DetailFeature {
  const sourceId = getWaterNetworkSourceId(feature) ?? "junctions";
  const id = getFeatureId(feature);
  const labels = getFeatureLabels(sourceId, id, feature.properties ?? {});

  return {
    id,
    layer: sourceId,
    title: labels.title,
    subtitle: labels.subtitle,
    properties: feature.properties ?? {}
  };
}

function getFeatureLabels(sourceId: WaterNetworkSourceId, id: string, properties: Record<string, unknown>) {
  if (sourceId === "water_quality_monitoring_points") {
    return {
      title: `水质监测点 ${formatValue(properties.monitoring_point_no)}`,
      subtitle: `节点 ${formatValue(properties.node_id ?? id)} · 灵敏度分析选点`
    };
  }

  if (isSourceGisSourceId(sourceId)) {
    const sourceName = formatValue(properties.source_layer_name);
    const sourceIdLabel = formatValue(properties.source_object_id ?? properties.source_fid ?? id);
    return {
      title: `${sourceName} ${sourceIdLabel}`,
      subtitle: sourceId === "fx_20200423_pipes" || sourceId === "fx_20200811_dn100_pipes"
        ? `管径 ${formatValue(properties.diameter)} · 长度 ${formatValue(properties.length)} m`
        : `${formatValue(properties.dataset_title)} · 源要素 ${formatValue(properties.source_fid)}`
    };
  }

  if (sourceId === "pipes") {
    return {
      title: `管线 ${id || "未命名"}`,
      subtitle: `DN${formatValue(properties.diameter)} · ${formatValue(properties.length)} m`
    };
  }

  if (sourceId === "valves") {
    return {
      title: `阀门 ${id || "未命名"}`,
      subtitle: `DN${formatValue(properties.diameter)} · ${formatValue(properties.valve_type)}`
    };
  }

  if (sourceId === "reservoirs") {
    return {
      title: `水库 ${id || "未命名"}`,
      subtitle: `水头 ${formatValue(properties.head)} · 模式 ${formatValue(properties.pattern_id)}`
    };
  }

  if (sourceId === "scada") {
    const associatedElementId = properties.node_id ?? properties.link_id;
    return {
      title: `SCADA ${id || "未命名"}`,
      subtitle: `${formatValue(properties.device_type)} · 关联 ${formatValue(associatedElementId)}`
    };
  }

  if (sourceId === "pumps") {
    return {
      title: `水泵 ${id || "未命名"}`,
      subtitle: `${formatValue(properties.start_node_id)} → ${formatValue(properties.end_node_id)}`
    };
  }

  if (sourceId === "tanks") {
    return {
      title: `水箱 ${id || "未命名"}`,
      subtitle: `初始水位 ${formatValue(properties.initial_level)} · 高程 ${formatValue(properties.elevation)} m`
    };
  }

  return {
    title: `节点 ${id || "未命名"}`,
    subtitle: `基础需水量 ${formatValue(properties.base_demand)} · 高程 ${formatValue(properties.elevation)} m`
  };
}