/**
 * A docking layout kit: a split tree of tabbed panes with invertible operations,
 * and the React components that render and drive it.
 *
 * Two layers, and the boundary between them is the point of the package. The
 * engine (`applyOp`, `Sequencer`, `DockController`) is pure TypeScript with no
 * React, no DOM, and no host concepts; replaying a recorded sequence over the
 * same initial state reproduces the same tree, because every operation carries
 * the ids it creates. The components render a layout snapshot and report settled
 * intents — one per gesture, never a drag frame — so the embedder's sequence
 * stays the single source of truth.
 *
 * Nothing host-specific lives here: rendered strings arrive as `DockLabels`, tab
 * bodies as a `TabRenderer`, and a tab's `kind` is an opaque string this kit
 * never interprets.
 *
 * @module
 */

// Model and operations.
export type {
  ApplyResult, DockMode, DockZone, FloatRect, LayoutNode, LayoutOp, LayoutState, NodeId,
  PaneAttachment, PaneHost, PaneId, PaneNode, SplitAxis, SplitDirection, SplitId,
  SplitNode, TabId, TabRecord,
} from './contract/types.ts'
export { applyOp, replay } from './engine/operations.ts'
export {
  canStepBack, canStepForward, EMPTY_HISTORY, isFocusOp, record, recordedOps,
  Sequencer, stepBack, stepForward,
} from './engine/sequence.ts'
export type { History, HistoryEntry, HistoryStep } from './engine/sequence.ts'
export {
  dockPaneIds, findParent, findTabPane, getNode, getPane, getSplit, getTab, topRightPaneId,
} from './engine/tree.ts'

// Interaction limits and geometry.
export {
  canSplit, clampSizes, DOCK_EDGE_FRACTION, DOCK_ZONES, dockPaneCount,
  FLOAT_DEFAULT_SIZE, FLOAT_MIN_SIZE, MAX_DOCK_PANES, MIN_PANE_FRACTION, zoneAt, zoneSplit,
} from './engine/constraints.ts'
export {
  containsPoint, dividerSizes, DRAG_THRESHOLD, floatRectAt, halvesFit, insertionIndex,
  movedRect, passedThreshold, resizedRect, SPLIT_MINIMUMS, zoneInRect,
} from './engine/geometry.ts'
export type { DropTarget, HalvesFit, PaneMeasure, Rect, Size, SplitMinimums } from './engine/geometry.ts'

// Intent planning: the shared decisions, as pure functions.
export {
  activeDockPaneId, findContentTab, findPaneContentTab, planAddTab, planDropTab, planDuplicateTab, planFloatTab,
  planOpenContent, planPlaceTab, planResizeSplit, planSetExpanded, planSetMode,
  planSettle, planSplitPane, planUnfloatPane,
} from './engine/planner.ts'
export type { Mint, OpenContentInput, PlannedTab } from './engine/planner.ts'

// The intent layer's stateful embedding, and its seeds.
export { DockController } from './engine/controller.ts'
export type { DockControllerOptions, DockSnapshot } from './engine/controller.ts'
export { createIdMinter, createInitialState } from './engine/initial.ts'
export type { IdMinter, TabFactory } from './engine/initial.ts'

// Outward contracts.
export type { DockIntents, DockLabels, TabMenuExtras, TabRenderer } from './contract/adapter.ts'

// React surface.
export { DockSurface } from './components/DockSurface.tsx'
export type { DockSurfaceProps } from './components/DockSurface.tsx'
export { FloatLayer } from './components/FloatLayer.tsx'
export type { FloatLayerProps } from './components/FloatLayer.tsx'
export { DockLayout } from './components/DockSurface.tsx'
export type { DockLayoutProps } from './components/DockSurface.tsx'