/** Stable boundary between Makelore, downloaded course packages and Works Square. */

export const LEARNING_API_PATH = '/api/works/learning';

export const LEARNING_GENERATION_CONTRACT_VERSION = 2;
export const LEARNING_MATERIAL_MAX_FILES = 5;
export const LEARNING_MATERIAL_MAX_FILE_BYTES = 50 * 1024 * 1024;
export const LEARNING_MATERIAL_MAX_TOTAL_BYTES = 150 * 1024 * 1024;

export type LearningGenerationOptions = {
  requirement: string;
  enableWebSearch: boolean;
  enableImageGeneration: boolean;
  enableVideoGeneration: boolean;
  enableTTS: boolean;
  interactiveMode: boolean;
  taskEngineMode: boolean;
};

export type LearningGenerationMaterialRef = {
  id: string;
  name: string;
  mimeType: string;
  size: number;
  lastModified: number;
  order: number;
};

/** IPC-only upload shape. File bytes are never persisted in Renderer state. */
export type LearningGenerationMaterialUpload = LearningGenerationMaterialRef & {
  bytes: Uint8Array;
};

export type LearningGenerationUploadRequest = {
  options: LearningGenerationOptions;
  materials: LearningGenerationMaterialUpload[];
};

export type LearningRuntimeCapability =
  | 'quiz-grade'
  | 'pbl/v2/task/update'
  | 'pbl/v2/open-task'
  | 'pbl/v2/simulator'
  | 'pbl/v2/instructor'
  | 'pbl/v2/evaluate';

export type LearningRuntimeBridgeRequest = {
  requestId: string;
  courseId: string;
  contentHash: string;
  capability: LearningRuntimeCapability;
  method: 'POST';
  context: {
    moduleId: string | null;
    moduleContentHash: string;
    anchor: {
      sceneId: string;
      sceneOrder?: number;
    };
  };
  body: unknown;
};

export type LearningRuntimeBridgeEvent =
  | { requestId: string; type: 'start'; status: number; contentType: string }
  | { requestId: string; type: 'chunk'; chunk: Uint8Array }
  | { requestId: string; type: 'end' }
  | { requestId: string; type: 'error'; code: string; message: string };

export type LearningSceneKind = 'slide' | 'interactive' | 'quiz' | 'pbl';
export type LearningCourseStatus = 'generating' | 'ready' | 'published' | 'failed' | 'archived';

export type LearningSingleCourseCapabilities = {
  modular?: false;
  sceneKinds: LearningSceneKind[];
  hasAudio: boolean;
  hasWhiteboard: boolean;
  hasAgent: boolean;
};

export type LearningLargeCourseCapabilities = {
  modular: true;
  orderedModules: true;
  productionStagePerModule: true;
};

export type LearningCourseCapabilities = LearningSingleCourseCapabilities | LearningLargeCourseCapabilities;

export type LearningCourseModule = {
  moduleId: string;
  title: string;
  summary: string | null;
  sceneCount: number;
  contentHash: string;
};

export type LearningCourse = {
  id: string;
  origin: 'user_single' | 'ops_large';
  status: LearningCourseStatus;
  title: string;
  summary: string | null;
  language: string | null;
  contentHash: string;
  archiveSha256: string;
  archiveBytes: number;
  formatVersion: number;
  minPlayerVersion: string;
  sceneCount: number;
  /** Ordered learning units inside one product-level course. */
  modules?: LearningCourseModule[];
  capabilities: LearningCourseCapabilities;
  createdAt: string;
  publishedAt: string | null;
};

export type LearningProgress = {
  courseId: string;
  /** Aggregate course hash used by Works ownership and entitlement checks. */
  contentHash: string;
  moduleId?: string | null;
  moduleContentHash?: string | null;
  sceneOrder: number;
  actionIndex: number | null;
  positionMs: number | null;
  completed: boolean;
  updatedAt: string;
};

export type LearningProgressWrite = Pick<
  LearningProgress,
  'contentHash' | 'moduleId' | 'sceneOrder' | 'actionIndex' | 'positionMs' | 'completed'
>;

export type InstalledLearningCourse = {
  schemaVersion: 1;
  course: LearningCourse;
  archivePath: string;
  installedAt: string;
};

export type LearningClassroomPayload = {
  courseId: string;
  /** Aggregate package identity used to address immutable local assets. */
  courseContentHash: string;
  /** Aggregate hash kept as a compatibility alias for existing Stage bridges. */
  contentHash: string;
  moduleId: string | null;
  /** Selected frozen module hash; equals courseContentHash for legacy single-classroom packages. */
  moduleContentHash: string;
  modules: LearningCourseModule[];
  classroom: { stage: Record<string, unknown>; scenes: unknown[] };
};

export type LearningGeneration = {
  contractVersion?: number;
  jobId: string;
  status: string;
  mode?: 'single' | 'large';
  step: string | null;
  progress: number | null;
  message: string | null;
  scenesGenerated: number | null;
  totalScenes: number | null;
  courseId: string | null;
  error: string | null;
  done: boolean;
};