import type { FeatureCollection } from 'geojson';

export interface NodeTimeSeries {
  demand: number[];
  head: number[];
  pressure: number[];
  quality: number[];
}

export interface LinkTimeSeries {
  flow: number[];
  velocity: number[];
  headloss: number[];
  quality: number[];
  energy?: number[];
  efficiency?: number[];
}

export interface NodeResult {
  id: string;
  type: number;
  coordinates: { x: number; y: number } | null;
  demand: number;
  head: number;
  pressure: number;
  quality?: number;
  timeSeries?: NodeTimeSeries;
}

export interface LinkResult {
  id: string;
  type: number;
  fromNode: string;
  toNode: string;
  vertices: { x: number; y: number }[];
  flow: number;
  velocity: number;
  headloss: number;
  quality?: number;
  energy?: number;
  efficiency?: number;
  totalKwh?: number;
  peakKw?: number;
  avgKw?: number;
  utilization?: number;
  timeSeries?: LinkTimeSeries;
}

export interface SimulationResult {
  engine: { runtime: "native" | "wasm"; version: "2.3.5" };
  timeSeconds: number;
  timeSteps?: number[];
  units: { flow: string; pressure: string };
  nodes: Record<string, NodeResult>;
  links: Record<string, LinkResult>;
  reportText?: string;
  qualityInfo?: QualityInfo;
  energySummary?: PumpEnergySummary;
  /** Warning codes (1-6) returned directly by EN_runH, independent of [REPORT] MESSAGES. */
  engineWarnings?: { time: number; code: number }[];
  /** [TIMES] REPORT START / REPORT TIMESTEP in seconds. timeSteps also holds
   * intermediate event times (tank fills, controls); use reportingStepIndices
   * for the periods EPANET itself reports. */
  reportStart?: number;
  reportStep?: number;
}

export interface PumpEnergyResult {
  id: string;
  fromNode: string;
  toNode: string;
  totalKwh: number;
  peakKw: number;
  avgKw: number;
  avgEfficiency: number;
  utilization: number;
}

export interface PumpEnergySummary {
  pumps: Record<string, PumpEnergyResult>;
  totalKwh: number;
  peakKw: number;
}

export interface QualityInfo {
  qualType: number;
  typeName: 'NONE' | 'CHEMICAL' | 'AGE' | 'TRACE';
  chemName: string;
  chemUnits: string;
  traceNode?: string;
  status: 'none' | 'success' | 'failed';
  errorMessage?: string;
}

export type ComparisonVariable = 'demand' | 'head' | 'pressure' | 'flow' | 'velocity' | 'headloss' | 'quality';

export interface ToleranceConfig {
  absTol: number;
  relTol: number;
}

export interface ToleranceViolation {
  variable: ComparisonVariable;
  id: string;
  time: number;
  diff: number;
  tolerance: number;
}

export interface ComparisonResult {
  passed: boolean;
  maxDiffs: Record<ComparisonVariable, number>;
  maxRelativeDiffs: Record<ComparisonVariable, number>;
  maxSignificantRelativeDiffs: Record<ComparisonVariable, number>;
  nearZeroCounts: Record<ComparisonVariable, number>;
  toleranceViolations: ToleranceViolation[];
  missingIds: string[];
}

export type SelectionTarget =
  | { type: 'node'; id: string }
  | { type: 'link'; id: string }
  | {
      type: 'gis-feature';
      layerId: string;
      featureId: string | number;
      properties: Record<string, unknown>;
      geometryType?: string;
    }
  | null;

export interface MultiSelectionState {
  nodes: Set<string>;
  links: Set<string>;
  gisFeatures: Array<{ layerId: string; featureId: string | number }>;
}

export type EditMode = 'select' | 'add-node' | 'add-pipe';

/** Text shown next to a node / at a link midpoint (calibration values, analysis results ...). */
export interface MapAnnotation {
  type: 'node' | 'link';
  id: string;
  text: string;
  color?: string;
}

/** DEM 등고선 on the map (maplibre-contour over the API's terrain tiles). */
export interface DemContours {
  demId: string;
  /** Minor contour interval (m); every 5th is a labelled major line. */
  interval: number;
  /** Highest useful tile zoom for this DEM's resolution. */
  maxzoom: number;
}

/** 3D 보기: tilted map, optional DEM terrain and node columns. */
export interface View3D {
  enabled: boolean;
  /** DEM id for terrain (server terrain tiles); none = flat ground. */
  demId?: string;
  exaggeration: number;
  /** Node columns: height from this display value (m). */
  columns: 'none' | 'head' | 'pressure' | 'elevation';
  columnScale: number;
}

/** Image draped on the map by its four corners (DEM shading, aerial photo, scanned drawing). */
export interface RasterOverlay {
  id: string;
  name: string;
  url: string;
  /** [lng, lat] of top-left, top-right, bottom-right, bottom-left. */
  corners: [number, number][];
  opacity: number;
  visible: boolean;
}

/** Right dock tab. */
export type RightTab = 'inspector' | 'results' | 'verification' | 'analysis';
export type DisplayMode =
  | 'pressure'
  | 'flow'
  | 'head'
  | 'velocity'
  | 'headloss'
  | 'elevation'
  | 'diff-pressure'
  | 'diff-flow'
  | 'quality';

export interface Scenario {
  id: string;
  name: string;
  description?: string;
  inpStr: string;
  result: SimulationResult | null;
  createdAt: string;
}


export type BasemapType =
  | 'blank'
  | 'osm'
  | 'vworld'
  | 'vworld-white'
  | 'vworld-midnight'
  | 'vworld-satellite'
  | 'vworld-satellite-hybrid';

/* ---------------------------------------------------------------------------
   User GIS Reference Layers
   --------------------------------------------------------------------------- */
export interface UserGisLayer {
  id: string;
  name: string;
  fileName: string;
  featureCollection: FeatureCollection;
  featureCount: number;
  geomTypes: string[];
  estimatedCrs: string;
  visible: boolean;
  opacity: number; // 0.0 ~ 1.0
  color: string;
  createdAt: string;
  /** CRS the source coordinates were read as (EPSG code / proj4); lets the
   * layer be reassigned when that guess was wrong. Absent = WGS84 / unknown. */
  sourceCrs?: string;
}

/* ---------------------------------------------------------------------------
   Layer Visibility State
   --------------------------------------------------------------------------- */
export interface LayerVisibilityState {
  // 관망 모델 요소별
  nodes: boolean;
  pipes: boolean;
  pumps: boolean;
  valves: boolean;
  tanksReservoirs: boolean;
  // 레이어별 투명도 (0.0 ~ 1.0)
  networkOpacity: {
    nodes: number;
    pipes: number;
    pumps: number;
    valves: number;
    tanksReservoirs: number;
  };
  // 결과 표시
  results: {
    visible: boolean;
    opacity: number;
  };
}

/* ---------------------------------------------------------------------------
   Map Context Menu Event
   --------------------------------------------------------------------------- */
export type ContextMenuTarget =
  | { type: 'canvas'; lngLat: [number, number]; modelCoords: [number, number] }
  | { type: 'node'; id: string; lngLat: [number, number]; modelCoords?: [number, number] }
  | { type: 'link'; id: string; lngLat: [number, number] }
  | {
      type: 'gis-feature';
      layerId: string;
      featureId: string | number;
      properties: Record<string, unknown>;
      lngLat: [number, number];
    };

export interface MapContextMenuEvent {
  x: number;
  y: number;
  target: ContextMenuTarget;
}