@neuroequality/neuroadapt-core/dist/preferences/migration.js

Core sensory, cognitive, and preference management for NeuroAdapt SDK

import { SCHEMA_VERSION } from "./schemas.js";
class MigrationRegistry {
  constructor() {
    this.migrations = /* @__PURE__ */ new Map();
  }
  /**
   * Register a migration from one version to another
   */
  registerMigration(fromVersion, migration) {
    this.migrations.set(fromVersion, migration);
  }
  /**
   * Apply migrations to bring preferences to current schema version
   */
  async migrate(preferences) {
    if (!preferences || typeof preferences !== "object" || preferences === null) {
      return this.getDefaultPreferences();
    }
    const prefs = preferences;
    let currentVersion = prefs.schemaVersion;
    if (!currentVersion) {
      currentVersion = "1.0.0";
    }
    if (currentVersion === SCHEMA_VERSION) {
      return this.ensureValidStructure(prefs);
    }
    let migratedPrefs = prefs;
    const migrationPath = this.getMigrationPath(currentVersion, SCHEMA_VERSION);
    for (const version of migrationPath) {
      const migration = this.migrations.get(version);
      if (migration) {
        migratedPrefs = await migration(migratedPrefs);
      }
    }
    const result = migratedPrefs;
    result.schemaVersion = SCHEMA_VERSION;
    result.lastModified = (/* @__PURE__ */ new Date()).toISOString();
    return this.ensureValidStructure(result);
  }
  /**
   * Get the migration path from source to target version
   */
  getMigrationPath(fromVersion, toVersion) {
    const versions = ["1.0.0", "1.0.1", "1.1.0"];
    const fromIndex = versions.indexOf(fromVersion);
    const toIndex = versions.indexOf(toVersion);
    if (fromIndex === -1 || toIndex === -1 || fromIndex >= toIndex) {
      return [];
    }
    return versions.slice(fromIndex, toIndex);
  }
  /**
   * Ensure preferences have valid structure with defaults for missing fields
   */
  ensureValidStructure(preferences) {
    const defaults = this.getDefaultPreferences();
    return {
      ...preferences,
      schemaVersion: SCHEMA_VERSION,
      lastModified: (/* @__PURE__ */ new Date()).toISOString(),
      sensory: {
        ...defaults.sensory,
        ...preferences.sensory
      },
      cognitive: {
        ...defaults.cognitive,
        ...preferences.cognitive
      },
      ai: {
        ...defaults.ai,
        ...preferences.ai
      },
      vr: {
        ...defaults.vr,
        ...preferences.vr
      }
    };
  }
  /**
   * Get default preferences for current schema version
   */
  getDefaultPreferences() {
    return {
      schemaVersion: SCHEMA_VERSION,
      lastModified: (/* @__PURE__ */ new Date()).toISOString(),
      sensory: {
        motionReduction: false,
        highContrast: false,
        colorVisionFilter: "none",
        fontSize: 1,
        reducedFlashing: false,
        darkMode: false
      },
      cognitive: {
        readingSpeed: "medium",
        explanationLevel: "detailed",
        processingPace: "standard",
        chunkSize: 5,
        allowInterruptions: true,
        preferVisualCues: false
      },
      ai: {
        tone: "neutral",
        responseLength: "standard",
        consistencyLevel: "moderate",
        useAnalogies: true,
        allowUndo: true
      },
      vr: {
        comfortRadius: 1.5,
        safeSpaceEnabled: true,
        locomotionType: "comfort",
        personalSpace: 1,
        panicButtonEnabled: true
      }
    };
  }
}
const defaultMigrationRegistry = new MigrationRegistry();
defaultMigrationRegistry.registerMigration("1.0.0", (prefs) => {
  const p = prefs;
  return {
    ...p,
    vr: {
      comfortRadius: 1.5,
      safeSpaceEnabled: true,
      locomotionType: "comfort",
      personalSpace: 1,
      panicButtonEnabled: true,
      ...p.vr || {}
    }
  };
});
defaultMigrationRegistry.registerMigration("1.0.1", (prefs) => {
  const p = prefs;
  const ai = p.ai || {};
  return {
    ...p,
    ai: {
      ...ai,
      consistencyLevel: ai.consistencyLevel || "moderate"
    }
  };
});
export {
  MigrationRegistry,
  defaultMigrationRegistry
};
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