import type { FeatureCollection, Geometry } from "geojson";

export const ARTIFACT_PANE_MIN_WIDTH = 600;
export const ARTIFACT_MAP_SPLIT_MIN_WIDTH = ARTIFACT_PANE_MIN_WIDTH * 2 + 1;
export const CONDITION_PANE_MIN_WIDTH = 880;
export const CONDITION_MAP_SPLIT_MIN_WIDTH = ARTIFACT_PANE_MIN_WIDTH + CONDITION_PANE_MIN_WIDTH + 1;

export type ArtifactType = "diagnosis" | "simulation" | "metric_analysis";
export type ArtifactLifecycle = "draft" | "reviewed" | "published" | "archived";
export type ArtifactViewMode = "map_split" | "focus";
export type ArtifactRequestedView = ArtifactViewMode | "map_only";
export type ArtifactMapRelation = "required" | "optional" | "none";
export type WorkbenchSurfaceMode = "default" | ArtifactRequestedView;

export type AnalysisMetric = {
  label: string;
  value: string;
  detail: string;
  tone: "neutral" | "info" | "success" | "warning" | "danger";
};

export type AnalysisChartSeries = {
  name: string;
  values: number[];
  color: string;
  type?: "line" | "bar";
};

export type AnalysisBlock =
  | {
      id: string;
      kind: "metric-grid";
      title: string;
      span: 12;
      metrics: AnalysisMetric[];
    }
  | {
      id: string;
      kind: "chart";
      title: string;
      description: string;
      span: 5 | 7 | 12;
      chartType: "line" | "bar";
      categories: string[];
      unit: string;
      series: AnalysisChartSeries[];
    }
  | {
      id: string;
      kind: "process-flow";
      title: string;
      description: string;
      span: 5 | 7 | 12;
      nodes: Array<{
        id: string;
        label: string;
        detail: string;
        status: "complete" | "active" | "pending";
      }>;
    }
  | {
      id: string;
      kind: "data-table";
      title: string;
      description: string;
      span: 5 | 7 | 12;
      columns: Array<{ key: string; label: string; numeric?: boolean }>;
      rows: Array<Record<string, string | number>>;
    }
  | {
      id: string;
      kind: "narrative";
      title: string;
      span: 5 | 7 | 12;
      paragraphs: string[];
    };

export type AnalysisArtifactAction = {
  id: string;
  label: string;
  description: string;
  tone: "primary" | "neutral" | "warning";
};

export type AnalysisArtifact = {
  id: string;
  origin?: "agent" | "backend" | "demo";
  type: ArtifactType;
  lifecycle: ArtifactLifecycle;
  revision: number;
  title: string;
  subtitle: string;
  summary: string;
  scope: string;
  confidence: string;
  generatedAt: string;
  analyticalTimeRange: { start: string; end: string };
  preferredView: ArtifactViewMode;
  mapRelation: ArtifactMapRelation;
  spatialOverlay?: FeatureCollection<Geometry>;
  blocks: AnalysisBlock[];
  sources: string[];
  limitations: string[];
  actions: AnalysisArtifactAction[];
};

export type ArtifactWorkspaceState = {
  pendingArtifact: AnalysisArtifact | null;
  activeArtifact: AnalysisArtifact | null;
  requestedView: ArtifactRequestedView;
};

export function createInitialArtifactWorkspaceState(): ArtifactWorkspaceState {
  return {
    pendingArtifact: null,
    activeArtifact: null,
    requestedView: "map_split"
  };
}

export function previewAnalysisArtifact(
  state: ArtifactWorkspaceState,
  artifact: AnalysisArtifact
): ArtifactWorkspaceState {
  return { ...state, pendingArtifact: artifact };
}

export function openPendingArtifact(state: ArtifactWorkspaceState): ArtifactWorkspaceState {
  if (!state.pendingArtifact) return state;
  return {
    pendingArtifact: null,
    activeArtifact: state.pendingArtifact,
    requestedView: getPreferredArtifactView(state.pendingArtifact)
  };
}

export function openAnalysisArtifact(
  _state: ArtifactWorkspaceState,
  artifact: AnalysisArtifact
): ArtifactWorkspaceState {
  return {
    pendingArtifact: null,
    activeArtifact: artifact,
    requestedView: getPreferredArtifactView(artifact)
  };
}

export function collapseActiveArtifact(state: ArtifactWorkspaceState): ArtifactWorkspaceState {
  if (!state.activeArtifact) return state;
  return {
    ...state,
    pendingArtifact: state.activeArtifact,
    activeArtifact: null
  };
}

export function destroyPendingArtifact(state: ArtifactWorkspaceState): ArtifactWorkspaceState {
  return state.pendingArtifact ? { ...state, pendingArtifact: null } : state;
}

export function destroyActiveArtifact(state: ArtifactWorkspaceState): ArtifactWorkspaceState {
  return state.activeArtifact
    ? { ...state, activeArtifact: null, requestedView: "map_split" }
    : state;
}

export function requestArtifactView(
  state: ArtifactWorkspaceState,
  view: ArtifactRequestedView
): ArtifactWorkspaceState {
  if (!state.activeArtifact) return state;
  return { ...state, requestedView: view };
}

export function resolveWorkbenchSurfaceMode(
  state: ArtifactWorkspaceState,
  businessWorkspaceWidth: number
): WorkbenchSurfaceMode {
  const artifact = state.activeArtifact;
  if (!artifact) return "default";
  if (state.requestedView === "map_only") return "map_only";
  if (state.requestedView === "focus") return "focus";
  return businessWorkspaceWidth >= ARTIFACT_MAP_SPLIT_MIN_WIDTH ? "map_split" : "focus";
}

function getPreferredArtifactView(artifact: AnalysisArtifact): ArtifactViewMode {
  return artifact.mapRelation === "none" ? "focus" : artifact.preferredView;
}