/**
 * legitimacy-metadata.test.js
 * 
 * Unit tests for Phase 1: Legitimacy Metadata Layer
 * Tests node structure extension, reinforcement tracking, legitimacy type shifts
 * 
 * Target: 80% unit tests passing by EOW
 * Status: SCAFFOLD (Day 1)
 */

const { describe, it, beforeEach, afterEach } = require('mocha');
const { expect } = require('chai');

// STUB: Import the NetworkMemory class (path may vary)
// const NetworkMemory = require('./network-memory.js');

/**
 * TEST SUITE 1: Node Structure Extension
 * Verify legitimacy + contested metadata initialized correctly
 */
describe('Phase 1: Legitimacy Metadata — Node Structure', () => {
  let networkMemory;
  
  beforeEach(async () => {
    // STUB: Initialize NetworkMemory with test config
    // networkMemory = new NetworkMemory({ /* test config */ });
  });
  
  afterEach(() => {
    // Cleanup
    networkMemory = null;
  });

  describe('Node Creation with Default Legitimacy', () => {
    it('should create node with legitimacy metadata on addNode()', async () => {
      // STUB: Implement test
      // const node = await networkMemory.addNode('test concept', 'test_tag');
      // expect(node).to.have.property('legitimacy');
      // expect(node.legitimacy).to.be.an('object');
    });

    it('should initialize legitimacy_type as "recency" for new nodes', async () => {
      // STUB: New nodes start in 'recency' state
      // const node = await networkMemory.addNode('new concept');
      // expect(node.legitimacy.legitimacy_type).to.equal('recency');
    });

    it('should initialize confidence_in_type as 0.5 (neutral)', async () => {
      // STUB: confidence_in_type = 0.5 for new nodes
      // const node = await networkMemory.addNode('new concept');
      // expect(node.legitimacy.confidence_in_type).to.equal(0.5);
    });

    it('should initialize reinforcement_count as 0', async () => {
      // STUB: New nodes have no reinforcement history
      // const node = await networkMemory.addNode('new concept');
      // expect(node.legitimacy.reinforcement_count).to.equal(0);
    });

    it('should initialize reinforcement_history as empty array', async () => {
      // STUB: No reinforcement events on creation
      // const node = await networkMemory.addNode('new concept');
      // expect(node.legitimacy.reinforcement_history).to.deep.equal([]);
    });

    it('should initialize all institutional pillars to baseline (0.3, 0.3, 1.0)', async () => {
      // STUB: Scott's Three Pillars baseline per spec
      // const node = await networkMemory.addNode('new concept');
      // expect(node.legitimacy.cognitive_pillar).to.equal(0.3);
      // expect(node.legitimacy.normative_pillar).to.equal(0.3);
      // expect(node.legitimacy.regulative_pillar).to.equal(1.0);
    });

    it('should initialize deinstitutionalization_score to 0.2', async () => {
      // STUB: New nodes low risk of removal
      // const node = await networkMemory.addNode('new concept');
      // expect(node.legitimacy.deinstitutionalization_score).to.equal(0.2);
    });
  });

  describe('Source Provenance Parameter', () => {
    it('should accept sourceProvenance parameter in addNode()', async () => {
      // STUB: addNode(concept, tag, embedding, sourceProvenance)
      // const node = await networkMemory.addNode('concept', 'tag', null, 'academic_literature');
      // expect(node.legitimacy.source_provenance).to.equal('academic_literature');
    });

    it('should default to "self_generated" when sourceProvenance not provided', async () => {
      // STUB: Default source
      // const node = await networkMemory.addNode('concept');
      // expect(node.legitimacy.source_provenance).to.equal('self_generated');
    });

    it('should preserve various source provenance types', async () => {
      // STUB: Test all valid types: academic_literature, user_input, self_generated, peer_instance, external_api
      // const sources = [
      //   'academic_literature', 'user_input', 'self_generated',
      //   'peer_instance', 'external_api'
      // ];
      // for (const source of sources) {
      //   const node = await networkMemory.addNode('concept', 'tag', null, source);
      //   expect(node.legitimacy.source_provenance).to.equal(source);
      // }
    });
  });

  describe('Contested Metadata Initialization', () => {
    it('should initialize contested metadata on node creation', async () => {
      // STUB: All nodes start with contested struct
      // const node = await networkMemory.addNode('test concept');
      // expect(node).to.have.property('contested');
      // expect(node.contested).to.be.an('object');
    });

    it('should initialize is_contested as false by default', async () => {
      // STUB: New nodes not contested
      // const node = await networkMemory.addNode('test concept');
      // expect(node.contested.is_contested).to.equal(false);
    });

    it('should initialize dissenting_systems as empty array', async () => {
      // STUB: No disagreement on creation
      // const node = await networkMemory.addNode('test concept');
      // expect(node.contested.dissenting_systems).to.deep.equal([]);
    });

    it('should initialize resolution_policy as "superposition" (default)', async () => {
      // STUB: Contested nodes default to holding both interpretations
      // const node = await networkMemory.addNode('test concept');
      // expect(node.contested.resolution_policy).to.equal('superposition');
    });
  });
});

/**
 * TEST SUITE 2: Edge Activation & Reinforcement
 * Verify reinforcement_history tracking and legitimacy type shifts
 */
describe('Phase 1: Legitimacy Metadata — Reinforcement & Type Shifts', () => {
  let networkMemory;
  let nodeA, nodeB;

  beforeEach(async () => {
    // STUB: Setup network with two test nodes
    // networkMemory = new NetworkMemory({ /* test config */ });
    // nodeA = await networkMemory.addNode('concept A', 'test');
    // nodeB = await networkMemory.addNode('concept B', 'test');
  });

  describe('Edge Activation & Reinforcement Tracking', () => {
    it('should increment reinforcement_count on addEdge()', async () => {
      // STUB: Each edge activation increments counter
      // const initialCount = nodeA.legitimacy.reinforcement_count;
      // await networkMemory.addEdge(nodeA.id, nodeB.id, 0.5);
      // const updatedNode = networkMemory.nodes.get(nodeA.id);
      // expect(updatedNode.legitimacy.reinforcement_count).to.equal(initialCount + 1);
    });

    it('should record reinforcement_history entry on addEdge()', async () => {
      // STUB: History tracks timestamp, source, confidence
      // const initialLen = nodeA.legitimacy.reinforcement_history.length;
      // await networkMemory.addEdge(nodeA.id, nodeB.id, 0.5, 'associative', 'user_input');
      // const updated = networkMemory.nodes.get(nodeA.id);
      // expect(updated.legitimacy.reinforcement_history.length).to.equal(initialLen + 1);
      // const latestEntry = updated.legitimacy.reinforcement_history[initialLen];
      // expect(latestEntry).to.have.property('timestamp');
      // expect(latestEntry).to.have.property('source');
      // expect(latestEntry).to.have.property('confidence');
    });

    it('should track reinforcement source (user_input, spreading_activation, dream, etc.)', async () => {
      // STUB: Source parameter recorded
      // await networkMemory.addEdge(nodeA.id, nodeB.id, 0.5, 'associative', 'spreading_activation');
      // const updated = networkMemory.nodes.get(nodeA.id);
      // const latestEntry = updated.legitimacy.reinforcement_history[0];
      // expect(latestEntry.source).to.equal('spreading_activation');
    });

    it('should use edge weight as confidence signal', async () => {
      // STUB: confidence = weight
      // const weight = 0.75;
      // await networkMemory.addEdge(nodeA.id, nodeB.id, weight);
      // const updated = networkMemory.nodes.get(nodeA.id);
      // const latestEntry = updated.legitimacy.reinforcement_history[0];
      // expect(latestEntry.confidence).to.equal(weight);
    });
  });

  describe('Legitimacy Type Shifts', () => {
    it('should shift legitimacy_type from "recency" to "reinforced" at count > 5', async () => {
      // STUB: Threshold behavior
      // for (let i = 0; i < 6; i++) {
      //   await networkMemory.addEdge(nodeA.id, nodeB.id, 0.5, 'associative', 'user_input');
      // }
      // const updated = networkMemory.nodes.get(nodeA.id);
      // expect(updated.legitimacy.legitimacy_type).to.equal('reinforced');
    });

    it('should shift from "reinforced" to "structural" at count > 10 AND density > 0.7', async () => {
      // STUB: Requires both high reinforcement + high cross-reference density
      // BLOCKED: cross_reference_density calculation not yet implemented
      // This test will be enabled after density calculation is integrated
    });

    it('should update confidence_in_type when reinforcement_count increases', async () => {
      // STUB: confidence increases with reinforcements
      // const initialConf = nodeA.legitimacy.confidence_in_type;
      // await networkMemory.addEdge(nodeA.id, nodeB.id, 0.5, 'associative', 'user_input');
      // const updated = networkMemory.nodes.get(nodeA.id);
      // expect(updated.legitimacy.confidence_in_type).to.be.greaterThan(initialConf);
    });

    it('should decay legitimacy_type to "default" for nodes > 24h old with no reinforcement', async () => {
      // STUB: Requires time manipulation in test (sinon clock or similar)
      // BLOCKED: Need clock mocking setup
    });
  });
});

/**
 * TEST SUITE 3: Contested Node Handling
 * Verify contested metadata updates and resolution policies
 */
describe('Phase 1: Legitimacy Metadata — Contested Nodes', () => {
  let networkMemory;
  let node;

  beforeEach(async () => {
    // STUB: Setup network with test node
    // networkMemory = new NetworkMemory({ /* test config */ });
    // node = await networkMemory.addNode('contested concept', 'test');
  });

  describe('Marking Nodes as Contested', () => {
    it('should allow setting is_contested = true', async () => {
      // STUB: Update contested state
      // node.contested.is_contested = true;
      // expect(node.contested.is_contested).to.equal(true);
    });

    it('should record dissenting_systems with confidence + evidence', async () => {
      // STUB: Multiple internal systems can disagree
      // node.contested.dissenting_systems.push({
      //   system_name: 'Critic',
      //   confidence: 0.8,
      //   alternative_belief: 'This is false',
      //   evidence: ['evidence1', 'evidence2']
      // });
      // expect(node.contested.dissenting_systems.length).to.equal(1);
      // expect(node.contested.dissenting_systems[0].system_name).to.equal('Critic');
    });

    it('should track held_since timestamp when contested', async () => {
      // STUB: Contestation date for timeout resolution
      // const now = new Date();
      // node.contested.is_contested = true;
      // node.contested.held_since = now;
      // expect(node.contested.held_since).to.equal(now);
    });
  });

  describe('Resolution Policies', () => {
    it('should support resolution_policy = "superposition" (hold both)', async () => {
      // STUB: Default: quantum superposition of interpretations
      // node.contested.resolution_policy = 'superposition';
      // expect(node.contested.resolution_policy).to.equal('superposition');
    });

    it('should support resolution_policy = "reinforcement" (winner-take-all)', async () => {
      // STUB: Pick the reinforced interpretation
      // node.contested.resolution_policy = 'reinforcement';
      // expect(node.contested.resolution_policy).to.equal('reinforcement');
    });

    it('should support resolution_policy = "timeout" (re-evaluate later)', async () => {
      // STUB: Hold dispute until timeout_date
      // node.contested.resolution_policy = 'timeout';
      // node.contested.resolution_details.timeout_date = new Date('2026-03-18');
      // expect(node.contested.resolution_policy).to.equal('timeout');
    });

    it('should support resolution_policy = "human" (escalate)', async () => {
      // STUB: Ask human for decision
      // node.contested.resolution_policy = 'human';
      // expect(node.contested.resolution_policy).to.equal('human');
    });
  });

  describe('Quantum Superposition Details', () => {
    it('should track primary_interpretation and secondary_interpretation', async () => {
      // STUB: Superposition holds both views
      // node.contested.resolution_details.superposition_metadata = {
      //   primary_interpretation: 'View A',
      //   secondary_interpretation: 'View B',
      //   quantum_state: 0.6  // 60% primary, 40% secondary
      // };
      // expect(node.contested.resolution_details.superposition_metadata.quantum_state).to.equal(0.6);
    });

    it('should allow updating quantum_state (0-1 weight)', async () => {
      // STUB: Adjust superposition weights
      // node.contested.resolution_details.superposition_metadata = {
      //   primary_interpretation: 'View A',
      //   secondary_interpretation: 'View B',
      //   quantum_state: 0.5
      // };
      // node.contested.resolution_details.superposition_metadata.quantum_state = 0.7;
      // expect(node.contested.resolution_details.superposition_metadata.quantum_state).to.equal(0.7);
    });
  });
});

/**
 * TEST SUITE 4: Institutional Pillars (Scott's Framework)
 * Verify cognitive, normative, regulative pillar updates
 */
describe('Phase 1: Legitimacy Metadata — Institutional Pillars', () => {
  let networkMemory;
  let node;

  beforeEach(async () => {
    // STUB: Setup test node
    // networkMemory = new NetworkMemory({ /* test config */ });
    // node = await networkMemory.addNode('pillar test concept', 'test');
  });

  describe('Pillar Baseline Values', () => {
    it('should initialize cognitive_pillar to 0.3', async () => {
      // STUB: Cognitive: "makes sense given other knowledge"
      // expect(node.legitimacy.cognitive_pillar).to.equal(0.3);
    });

    it('should initialize normative_pillar to 0.3', async () => {
      // STUB: Normative: "actively maintained/used"
      // expect(node.legitimacy.normative_pillar).to.equal(0.3);
    });

    it('should initialize regulative_pillar to 1.0', async () => {
      // STUB: Regulative: "conforms to rules" (innocent until proven)
      // expect(node.legitimacy.regulative_pillar).to.equal(1.0);
    });
  });

  describe('Pillar Updates on Reinforcement', () => {
    it('should increase normative_pillar when reinforced', async () => {
      // STUB: Active use increases legitimacy
      // const initialNorm = node.legitimacy.normative_pillar;
      // // Reinforce multiple times
      // // expect(updated.legitimacy.normative_pillar).to.be.greaterThan(initialNorm);
    });

    it('should increase cognitive_pillar when cross-referenced', async () => {
      // STUB: Connectivity = better fit with knowledge network
      // BLOCKED: cross_reference_density not yet implemented
    });

    it('should decrease regulative_pillar on decay_trigger', async () => {
      // STUB: Violations reduce regulatory legitimacy
      // node.legitimacy.decay_triggers.push({
      //   trigger_type: 'functional_pressure',
      //   severity: 0.6,
      //   timestamp: new Date(),
      //   reason: 'Contradicts established rule'
      // });
      // // Trigger update logic
      // // expect(updated.legitimacy.regulative_pillar).to.be.lessThan(1.0);
    });
  });
});

/**
 * TEST SUITE 5: Deinstitutionalization & Decay
 * Verify removal risk scoring and decay triggers
 */
describe('Phase 1: Legitimacy Metadata — Deinstitutionalization', () => {
  let networkMemory;
  let node;

  beforeEach(async () => {
    // STUB: Setup test node
    // networkMemory = new NetworkMemory({ /* test config */ });
    // node = await networkMemory.addNode('decay test concept', 'test');
  });

  describe('Deinstitutionalization Score', () => {
    it('should initialize deinstitutionalization_score to 0.2', async () => {
      // STUB: New nodes low risk
      // expect(node.legitimacy.deinstitutionalization_score).to.equal(0.2);
    });

    it('should mark node as high-risk when score > 0.7', async () => {
      // STUB: 0.7 threshold for removal candidate
      // node.legitimacy.deinstitutionalization_score = 0.8;
      // expect(node.legitimacy.deinstitutionalization_score).to.be.greaterThan(0.7);
    });

    it('should mark node as moderate-risk when 0.5 < score <= 0.7', async () => {
      // STUB: 0.6 is moderate threshold
      // node.legitimacy.deinstitutionalization_score = 0.6;
      // expect(node.legitimacy.deinstitutionalization_score).to.equal(0.6);
    });
  });

  describe('Decay Triggers', () => {
    it('should record decay_triggers with type, severity, timestamp, reason', async () => {
      // STUB: Political, functional, social pressures
      // node.legitimacy.decay_triggers.push({
      //   trigger_type: 'political_pressure',
      //   severity: 0.7,
      //   timestamp: new Date(),
      //   reason: 'Disputed by internal Analyst system'
      // });
      // expect(node.legitimacy.decay_triggers.length).to.equal(1);
      // const trigger = node.legitimacy.decay_triggers[0];
      // expect(trigger.trigger_type).to.equal('political_pressure');
      // expect(trigger.severity).to.be.greaterThan(0.6);
    });

    it('should support trigger types: political_pressure, functional_pressure, social_pressure', async () => {
      // STUB: Scott's three decay pathways
      // const types = ['political_pressure', 'functional_pressure', 'social_pressure'];
      // for (const type of types) {
      //   const tempNode = await networkMemory.addNode('temp concept');
      //   tempNode.legitimacy.decay_triggers.push({
      //     trigger_type: type,
      //     severity: 0.5,
      //     timestamp: new Date(),
      //     reason: 'Test'
      //   });
      //   expect(tempNode.legitimacy.decay_triggers[0].trigger_type).to.equal(type);
      // }
    });
  });

  describe('Legitimacy Review', () => {
    it('should track last_legitimacy_review timestamp', async () => {
      // STUB: When was legitimacy last evaluated?
      // expect(node.legitimacy).to.have.property('last_legitimacy_review');
      // expect(node.legitimacy.last_legitimacy_review).to.be.instanceOf(Date);
    });

    it('should allow updating last_legitimacy_review on review cycle', async () => {
      // STUB: Track review events
      // const newReview = new Date();
      // node.legitimacy.last_legitimacy_review = newReview;
      // expect(node.legitimacy.last_legitimacy_review).to.equal(newReview);
    });
  });
});

/**
 * TEST SUITE 6: Immutability & Invariants
 * Verify structural legitimacy constraints
 */
describe('Phase 1: Legitimacy Metadata — Immutability & Invariants', () => {
  let networkMemory;
  let node;

  beforeEach(async () => {
    // STUB: Setup test node
    // networkMemory = new NetworkMemory({ /* test config */ });
    // node = await networkMemory.addNode('immutable test', 'test');
  });

  describe('Structural Legitimacy Immutability', () => {
    it('should mark structural legitimacy nodes as 100% immutable once assigned', async () => {
      // STUB: Once legitimacy_type = 'structural', shape locked
      // node.legitimacy.legitimacy_type = 'structural';
      // // Verify immutability constraint
      // expect(node.legitimacy.legitimacy_type).to.equal('structural');
    });

    it('should prevent legitimacy_type downgrade from "structural"', async () => {
      // STUB: Structural nodes cannot be demoted
      // BLOCKED: Immutability enforcement logic not yet implemented
    });

    it('should log warning if structural node is modified', async () => {
      // STUB: Audit trail for structural changes
      // BLOCKED: Logging integration needed
    });
  });

  describe('Contested Default to Superposition', () => {
    it('should default resolution_policy to "superposition" for all contested nodes', async () => {
      // STUB: Contested nodes hold both interpretations by default
      // node.contested.is_contested = true;
      // if (!node.contested.resolution_policy) {
      //   node.contested.resolution_policy = 'superposition';
      // }
      // expect(node.contested.resolution_policy).to.equal('superposition');
    });
  });
});

/**
 * INTEGRATION TEST: End-to-End Legitimacy Lifecycle
 */
describe('Phase 1: Legitimacy Metadata — Full Lifecycle', () => {
  let networkMemory;

  beforeEach(async () => {
    // STUB: Full network setup
    // networkMemory = new NetworkMemory({ /* test config */ });
  });

  it('should trace a node from creation → reinforcement → legitimacy type shift', async () => {
    // STUB: Full lifecycle test
    // 1. Create node (starts 'recency')
    // 2. Reinforce 6+ times (shift to 'reinforced')
    // 3. Verify legitimacy_type and confidence_in_type both update
    // 4. Verify reinforcement_history has all 6 entries
  });

  it('should handle contested node resolution with superposition', async () => {
    // STUB: Contested lifecycle
    // 1. Create node
    // 2. Mark as contested with two dissenting systems
    // 3. Set resolution_policy = 'superposition'
    // 4. Verify quantum_state is tracked
  });

  it('should calculate deinstitutionalization risk over time', async () => {
    // STUB: Risk scoring lifecycle
    // 1. Create node
    // 2. Add decay_triggers
    // 3. Update deinstitutionalization_score
    // 4. Verify thresholds (0.7 high, 0.6 moderate)
  });
});
