import { test } from 'node:test'
import assert from 'node:assert/strict'
import { createMockFacade } from '../src/facade/mockFacade'
import { PROJECT_SCHEMA_MIGRATIONS, PROJECT_SCHEMA_SQL, PROJECT_SCHEMA_VERSION } from '../src/facade/projectSchema'
import { PersistenceWriteQueue, ProjectAutosaveScheduler } from '../src/facade/projectStore'
import { assertShapeHandleIntegrity, normalizeBitbybitMesh, validateBooleanUnionInput, validateBoxInput, validateConeInput, validateCylinderInput, validatePadInput, validatePlacementInput, validatePlanarProfile, validateRevolutionInput, validateSphereInput } from '../src/facade/geometryRuntime'
import type { ShapeHandle } from '../src/facade/types'

test('facade exposes a stable initial document projection', () => {
  const facade = createMockFacade()
  const state = facade.getState()
  assert.equal(state.apiVersion, '0.1')
  assert.equal(state.document.id, 'doc-pump-housing')
  assert.equal(state.document.tree.find((item) => item.id === 'body')?.type, 'body')
  assert.equal(facade.gui.workbench.getActive(), 'Part Design')
  assert.equal(facade.geometry.capabilities().provider, 'Bitbybit OCCT')
})

test('geometry boundary validates dimensions before invoking OCCT', () => {
  assert.throws(() => validateBoxInput({ width: 0, length: 2, height: 3, documentId: 'doc', documentVersion: 1 }), /width/)
  assert.throws(() => validateBoxInput({ width: 1, length: 2, height: 3, center: [0, Number.NaN, 0], documentId: 'doc', documentVersion: 1 }), /center/)
  assert.doesNotThrow(() => validateBoxInput({ width: 1, length: 2, height: 3, documentId: 'doc', documentVersion: 0 }))
  assert.throws(() => validateCylinderInput({ radius: 1, height: 2, direction: [0, 0, 0], documentId: 'doc', documentVersion: 1 }), /direction/)
  assert.throws(() => validateSphereInput({ radius: -1, documentId: 'doc', documentVersion: 1 }), /radius/)
  assert.throws(() => validateConeInput({ radius1: 0, radius2: 0, height: 2, documentId: 'doc', documentVersion: 1 }), /radius/)
  assert.throws(() => validatePlacementInput({ shape: { id: 'shape', kernel: 'bitbybit-occt', kind: 'solid', documentId: 'doc', documentVersion: 1 }, placement: { translation: [0, 0, 0], rotationAxis: [0, 0, 0], rotationAngle: 0 }, documentId: 'doc', documentVersion: 2 }), /rotationAxis/)
})

test('geometry handles reject forged document ownership', () => {
  const expected: ShapeHandle = { id: 'shape-one', kernel: 'bitbybit-occt', kind: 'solid', documentId: 'doc-one', documentVersion: 4 }
  assert.doesNotThrow(() => assertShapeHandleIntegrity({ ...expected }, expected))
  assert.throws(() => assertShapeHandleIntegrity({ ...expected, documentVersion: 5 }, expected), /integrity/)
  assert.throws(() => assertShapeHandleIntegrity({ ...expected, id: 'shape-two' }, expected), /integrity/)
  assert.throws(() => assertShapeHandleIntegrity({ ...expected, documentId: 'doc-two' }, expected), /integrity/)
})

test('boolean geometry rejects cross-document and future-version operands', () => {
  const first: ShapeHandle = { id: 'shape-one', kernel: 'bitbybit-occt', kind: 'solid', documentId: 'doc-one', documentVersion: 2 }
  const second: ShapeHandle = { ...first, id: 'shape-two', documentVersion: 3 }
  assert.doesNotThrow(() => validateBooleanUnionInput({ shapes: [first, second], documentId: 'doc-one', documentVersion: 3 }))
  assert.throws(() => validateBooleanUnionInput({ shapes: [first, { ...second, documentId: 'doc-two' }], documentId: 'doc-one', documentVersion: 3 }), /another document/)
  assert.throws(() => validateBooleanUnionInput({ shapes: [first, second], documentId: 'doc-one', documentVersion: 2 }), /newer/)
  assert.throws(() => validateBooleanUnionInput({ shapes: [first], documentId: 'doc-one', documentVersion: 2 }), /at least 2/)
})

test('feature profiles reject degenerate and non-planar geometry', () => {
  const rectangle = { outer: [[-1, 0, -1], [1, 0, -1], [1, 0, 1], [-1, 0, 1]] as [number, number, number][] }
  assert.doesNotThrow(() => validatePlanarProfile(rectangle))
  assert.doesNotThrow(() => validatePadInput({ profile: rectangle, length: 4, documentId: 'doc', documentVersion: 1 }))
  assert.throws(() => validatePlanarProfile({ outer: [[0, 0, 0], [1, 0, 0], [2, 0, 0]] }), /collinear/)
  assert.throws(() => validatePlanarProfile({ outer: [[0, 0, 0], [1, 0, 0], [1, 0, 1], [0, 0.1, 1]] }), /coplanar/)
  assert.throws(() => validateRevolutionInput({ profile: rectangle, axisDirection: [0, 0, 0], documentId: 'doc', documentVersion: 1 }), /axisDirection/)
})

test('Bitbybit face meshes are normalized into a facade-owned indexed asset', () => {
  const shape: ShapeHandle = { id: 'shape-test', kernel: 'bitbybit-occt', kind: 'solid', documentId: 'doc', documentVersion: 7 }
  const mesh = normalizeBitbybitMesh(shape, {
    faceList: [{ faceIndex: 1, vertexCoord: [0, 0, 0, 2, 0, 0, 0, 3, 0], normalCoord: [0, 0, 1, 0, 0, 1, 0, 0, 1], triIndexes: [0, 1, 2], numberOfTriangles: 1 }],
    edgeList: [], pointsList: [],
  } as never)
  assert.deepEqual([...mesh.positions], [0, 0, 0, 2, 0, 0, 0, 3, 0])
  assert.deepEqual([...mesh.indices], [0, 1, 2])
  assert.deepEqual(mesh.bounds, { min: [0, 0, 0], max: [2, 3, 0] })
  assert.equal(mesh.topologyVersion, 7)
  assert.throws(() => normalizeBitbybitMesh(shape, {
    faceList: [{ faceIndex: 2, vertexCoord: [0, 0, 0], normalCoord: [], triIndexes: [0, 1, 0], numberOfTriangles: 1 }],
    edgeList: [], pointsList: [],
  } as never), /out-of-range/)
})

test('project schema is versioned and covers the FreeCAD document graph', () => {
  assert.equal(PROJECT_SCHEMA_VERSION, 1)
  assert.equal(PROJECT_SCHEMA_MIGRATIONS[0].version, PROJECT_SCHEMA_VERSION)
  for (const table of ['projects', 'documents', 'objects', 'object_properties', 'dependencies', 'transactions', 'resources']) assert.match(PROJECT_SCHEMA_SQL, new RegExp(`CREATE TABLE IF NOT EXISTS ${table}`))
  assert.match(PROJECT_SCHEMA_SQL, /CREATE INDEX IF NOT EXISTS objects_document_ordinal/)
})

test('persistence writes are serialized and continue after a failed write', async () => {
  const queue = new PersistenceWriteQueue()
  let inFlight = 0
  let maximumInFlight = 0
  const order: string[] = []
  const write = (id: string, shouldFail = false) => queue.run(async () => {
    inFlight += 1
    maximumInFlight = Math.max(maximumInFlight, inFlight)
    await new Promise((resolve) => setTimeout(resolve, 2))
    order.push(id)
    inFlight -= 1
    if (shouldFail) throw new Error('expected write failure')
    return id
  })
  const results = await Promise.allSettled([write('one'), write('two', true), write('three')])
  assert.equal(maximumInFlight, 1)
  assert.deepEqual(order, ['one', 'two', 'three'])
  assert.equal(results[0].status, 'fulfilled')
  assert.equal(results[1].status, 'rejected')
  assert.equal(results[2].status, 'fulfilled')
})

test('autosave scheduler coalesces idle document changes and flushes the latest version', async () => {
  const savedVersions: number[] = []
  const scheduler = new ProjectAutosaveScheduler(async (document) => { savedVersions.push(document.version); return { documentId: document.id, documentVersion: document.version, persistedAt: Date.now(), mode: 'sqlite-memory' } }, 5)
  const document = (version: number) => ({ id: 'doc', label: 'Autosave', version, dirty: true, readOnly: false, units: 'mm', tree: [], objects: [] })
  scheduler.schedule(document(1))
  scheduler.schedule(document(2))
  await new Promise((resolve) => setTimeout(resolve, 15))
  assert.deepEqual(savedVersions, [2])
  scheduler.schedule(document(3))
  const result = await scheduler.flush()
  assert.equal(result?.documentVersion, 3)
  scheduler.cancel()
})

test('workbench and selection changes are event driven', () => {
  const facade = createMockFacade()
  const events: string[] = []
  const unsubscribe = facade.subscribe((event) => events.push(event.type))
  facade.gui.workbench.setActive('Sketcher')
  facade.selection.select('sketch')
  unsubscribe()
  assert.equal(facade.getState().activeWorkbench, 'Sketcher')
  assert.equal(facade.selection.getObjectId(), 'sketch')
  assert.ok(events.includes('state.changed'))
  assert.ok(events.includes('notice'))
})

test('commands and tasks preserve apply/cancel lifecycle', () => {
  const facade = createMockFacade()
  facade.gui.command.execute({ commandId: 'create-sketch' })
  assert.equal(facade.task.getActive()?.status, 'preview')
  facade.task.update({ support: 'XY_Plane' })
  assert.equal(facade.task.getActive()?.draft.support, 'XY_Plane')
  facade.task.cancel()
  assert.equal(facade.task.getActive()?.status, 'cancelled')
})

test('disabled commands return a reason instead of mutating the document', () => {
  const facade = createMockFacade()
  const before = facade.getState().document.version
  const state = facade.gui.command.getState('pad')
  assert.equal(state.status, 'enabled')
  facade.selection.clear()
  facade.gui.workbench.setActive('Sketcher')
  const disabled = facade.gui.command.getState('pad')
  assert.equal(disabled.status, 'disabled')
  assert.match(disabled.reason || '', /Part Design|compatible object/)
  facade.gui.command.execute({ commandId: 'pad' })
  assert.equal(facade.getState().diagnostics.at(-1)?.code, 'COMMAND_DISABLED')
  assert.equal(facade.getState().document.version, before)
})

test('command events carry a document-scoped request context', () => {
  const facade = createMockFacade()
  const events: string[] = []
  let requestId = ''
  facade.subscribe((event) => { events.push(event.type); if (event.type === 'command.started') requestId = event.context.requestId })
  facade.gui.command.execute({ commandId: 'create-sketch' })
  assert.ok(events.includes('command.started'))
  assert.ok(events.includes('command.completed'))
  assert.match(requestId, /^req-/)
})

test('document mutations use the facade history boundary', () => {
  const facade = createMockFacade()
  facade.gui.command.execute({ commandId: 'new-document' })
  assert.equal(facade.app.document.getActive().label, 'Untitled document')
  assert.equal(facade.history.canUndo(), true)
  facade.history.undo()
  assert.equal(facade.app.document.getActive().label, 'Pump Housing')
  assert.equal(facade.history.canRedo(), true)
  facade.history.redo()
  assert.equal(facade.app.document.getActive().label, 'Untitled document')
})

test('typed properties are validated, versioned and undoable through the document boundary', () => {
  const facade = createMockFacade()
  const before = facade.app.document.getActive().version
  assert.equal(facade.app.document.getObject('pad')?.properties.find((property) => property.name === 'Length')?.value, 42)
  facade.app.document.setProperty({ objectId: 'pad', propertyName: 'Length', value: 50 })
  assert.equal(facade.app.document.getActive().version, before + 1)
  assert.equal(facade.app.document.getActive().tree.find((item) => item.id === 'pad')?.state, 'dirty')
  assert.equal(facade.app.document.getObject('pad')?.properties.find((property) => property.name === 'Status')?.value, 'Touched')
  assert.throws(() => facade.app.document.setProperty({ objectId: 'pad', propertyName: 'Length', value: -1 }), /negative/)
  assert.equal(facade.app.document.getActive().version, before + 1)
  facade.history.undo()
  assert.equal(facade.app.document.getObject('pad')?.properties.find((property) => property.name === 'Length')?.value, 42)
  facade.history.redo()
  assert.equal(facade.app.document.getObject('pad')?.properties.find((property) => property.name === 'Length')?.value, 50)
})

test('view properties do not mark the geometry object touched', () => {
  const facade = createMockFacade()
  facade.app.document.setProperty({ objectId: 'fillet', propertyName: 'Visibility', value: false })
  assert.equal(facade.app.document.getActive().tree.find((item) => item.id === 'fillet')?.state, 'valid')
  assert.equal(facade.app.document.getObject('fillet')?.properties.find((property) => property.name === 'Visibility')?.value, false)
})

test('project persistence remains behind the facade contract', async () => {
  const facade = createMockFacade()
  facade.app.document.setProperty({ objectId: 'pad', propertyName: 'Length', value: 55 })
  const saved = await facade.project.save()
  assert.equal(saved.documentId, 'doc-pump-housing')
  const loaded = await facade.project.load('doc-pump-housing')
  assert.equal(loaded?.label, 'Pump Housing')
  assert.equal(loaded?.objects.find((object) => object.id === 'pad')?.properties.find((property) => property.name === 'Length')?.value, 55)
  assert.equal(facade.project.capabilities().mode, 'sqlite-memory')
})

test('project resources use content identity and reference counting', async () => {
  const facade = createMockFacade()
  const bytes = new Uint8Array([1, 2, 3, 5, 8])
  const first = await facade.project.resource.put(bytes, 'application/octet-stream')
  const second = await facade.project.resource.put(bytes, 'application/octet-stream')
  assert.equal(first.hash, second.hash)
  assert.equal(second.refCount, 2)
  bytes[0] = 99
  assert.deepEqual([...((await facade.project.resource.get(first.hash)) || [])], [1, 2, 3, 5, 8])
  await facade.project.resource.release(first.hash)
  assert.deepEqual([...((await facade.project.resource.get(first.hash)) || [])], [1, 2, 3, 5, 8])
  await facade.project.resource.release(first.hash)
  assert.equal(await facade.project.resource.get(first.hash), null)
})

test('Part Design feature tasks commit a document object and remain undoable', () => {
  const facade = createMockFacade()
  const before = facade.app.document.getActive()
  facade.gui.command.execute({ commandId: 'pad' })
  assert.equal(facade.task.getActive()?.commandId, 'pad')
  facade.task.update({ length: 42, reversed: false })
  facade.task.apply()

  const committed = facade.app.document.getActive()
  const created = committed.tree.find((item) => item.id === 'pad001')
  assert.equal(created?.label, 'Pad')
  assert.equal(committed.version, before.version + 1)
  assert.equal(facade.selection.getObjectId(), 'pad001')
  assert.equal(committed.dirty, true)

  facade.history.undo()
  assert.equal(facade.app.document.getActive().tree.some((item) => item.id === 'pad001'), false)
  facade.history.redo()
  assert.equal(facade.app.document.getActive().tree.some((item) => item.id === 'pad001'), true)
})