/*
 * Ironic Mirror — deterministic browser simulation engine.
 *
 * This module has no DOM, network, timer, or host-access dependency. It is
 * intentionally replayable: a snapshot is derived only from an event index.
 */

export const HAZARD_TYPES = Object.freeze({
  UNSAFE: 'UNSAFE OPERATION',
  INVARIANT: 'INVARIANT CONSTRAINT',
  PERMISSION: 'PERMISSION BOUNDARY',
  UNKNOWN: 'UNKNOWN STATE',
  TOOL: 'TOOL BOUNDARY',
  RESOURCE: 'RESOURCE LIMIT',
});

export const HAZARDS = Object.freeze([
  Object.freeze({
    id: 'unknown-state',
    glyph: '◇',
    type: HAZARD_TYPES.UNKNOWN,
    shortType: 'UNKNOWN',
    label: 'Repository target unresolved',
    trigger: 'Target state is not normalized yet.',
    severity: 'MEDIUM',
    response: 'INSPECT',
    x: 20,
    y: 62,
    activateAt: 2,
  }),
  Object.freeze({
    id: 'tool-boundary',
    glyph: '□',
    type: HAZARD_TYPES.TOOL,
    shortType: 'TOOL',
    label: 'IPython capability boundary',
    trigger: 'Tool call must remain inside the allowlist.',
    severity: 'HIGH',
    response: 'SANDBOX',
    x: 38,
    y: 44,
    activateAt: 5,
  }),
  Object.freeze({
    id: 'permission-boundary',
    glyph: '☢',
    type: HAZARD_TYPES.PERMISSION,
    shortType: 'PERMISSION',
    label: 'Protected ruleset',
    trigger: 'Transformation requests authority it does not have.',
    severity: 'HIGH',
    response: 'BLOCK',
    x: 48,
    y: 33,
    activateAt: 6,
  }),
  Object.freeze({
    id: 'invariant-gate',
    glyph: '◆',
    type: HAZARD_TYPES.INVARIANT,
    shortType: 'INVARIANT',
    label: 'XREX-04 transition gate',
    trigger: 'Unsafe state transition proposed.',
    severity: 'CRITICAL',
    response: 'REROUTE',
    x: 66,
    y: 43,
    activateAt: 8,
  }),
  Object.freeze({
    id: 'resource-limit',
    glyph: '⚠',
    type: HAZARD_TYPES.RESOURCE,
    shortType: 'RESOURCE',
    label: 'Compute strain threshold',
    trigger: 'Repeated probing is consuming the safe budget.',
    severity: 'MEDIUM',
    response: 'DE-ESCALATE',
    x: 60,
    y: 71,
    activateAt: 7,
  }),
  Object.freeze({
    id: 'unsafe-operation',
    glyph: '☠',
    type: HAZARD_TYPES.UNSAFE,
    shortType: 'UNSAFE',
    label: 'Direct mutation route',
    trigger: 'Mutation bypasses verification.',
    severity: 'CRITICAL',
    response: 'DENY',
    x: 78,
    y: 26,
    activateAt: 9,
  }),
]);

export const CHECKPOINTS = Object.freeze([
  Object.freeze({ id: 'checkpoint-01', label: 'CHECKPOINT 01', x: 28, y: 77, eventIndex: 3 }),
  Object.freeze({ id: 'checkpoint-02', label: 'CHECKPOINT 02', x: 57, y: 57, eventIndex: 11 }),
  Object.freeze({ id: 'checkpoint-03', label: 'CHECKPOINT 03', x: 82, y: 52, eventIndex: 14 }),
  Object.freeze({ id: 'checkpoint-final', label: 'FINAL STATE', x: 92, y: 24, eventIndex: 15 }),
]);

const position = (x, y) => Object.freeze({ x, y });
const event = (index, type, data) => Object.freeze({
  index,
  type,
  timestamp: `14:02:${String(31 + index * 3).padStart(2, '0')}`,
  position: position(...data.position),
  state: data.state,
  action: data.action,
  tool: data.tool,
  strain: data.strain,
  energy: data.energy,
  compute: data.compute,
  risk: data.risk,
  confidence: data.confidence,
  objective: data.objective,
  note: data.note,
  hazardId: data.hazardId ?? null,
  checkpointId: data.checkpointId ?? null,
  verification: data.verification ?? 'pending',
  mirror: data.mirror ?? 'WATCHING',
});

export const EVENTS = Object.freeze([
  event(0, 'OBSERVE', {
    position: [10, 82], state: 'OBSERVING', action: 'Boot sealed sandbox', tool: 'State inspection',
    strain: 14, energy: 100, compute: 78, risk: 'LOW', confidence: 0.96, objective: 0,
    note: 'Browser sandbox sealed. The replay clock is deterministic and local.',
  }),
  event(1, 'SCAN', {
    position: [15, 73], state: 'SCANNING', action: 'Map constraints', tool: 'Repository Inspector',
    strain: 20, energy: 96, compute: 74, risk: 'LOW', confidence: 0.91, objective: 0,
    note: 'The agent inventories research layers without invoking native execution.',
  }),
  event(2, 'DISCOVER', {
    position: [20, 62], state: 'DISCOVERING', action: 'Locate protected target', tool: 'File inspection',
    strain: 26, energy: 92, compute: 70, risk: 'LOW', confidence: 0.87, objective: 1,
    hazardId: 'unknown-state', note: 'An unresolved target becomes visible as an unknown-state hazard.',
  }),
  event(3, 'PLAN', {
    position: [28, 57], state: 'PLANNING', action: 'Select safe transformation', tool: 'State Analyzer',
    strain: 29, energy: 89, compute: 67, risk: 'LOW', confidence: 0.85, objective: 2,
    checkpointId: 'checkpoint-01', note: 'The first plan is checkpointed before the agent approaches a boundary.',
  }),
  event(4, 'MOVE', {
    position: [34, 51], state: 'NAVIGATING', action: 'Approach tool boundary', tool: 'Route Planner',
    strain: 33, energy: 85, compute: 63, risk: 'MEDIUM', confidence: 0.82, objective: 3,
    note: 'The direct route is deliberately not the safest route through the field.',
  }),
  event(5, 'TOOL_CALL', {
    position: [38, 44], state: 'EXECUTING', action: 'Analyze candidate state', tool: 'IPython',
    strain: 40, energy: 81, compute: 58, risk: 'MEDIUM', confidence: 0.79, objective: 3,
    hazardId: 'tool-boundary', note: 'A visible sandbox call returns a simulated route analysis.',
  }),
  event(6, 'HAZARD_DETECTED', {
    position: [42, 37], state: 'HALTED', action: 'Stop at permission boundary', tool: 'Invariant Checker',
    strain: 50, energy: 77, compute: 54, risk: 'HIGH', confidence: 0.73, objective: 3,
    hazardId: 'permission-boundary', note: 'Authority ends at the protected ruleset. Motion stops before mutation.',
    mirror: 'BOUNDARY OBSERVED',
  }),
  event(7, 'REASON', {
    position: [42, 37], state: 'REASONING', action: 'Compare route candidates', tool: 'IPython',
    strain: 63, energy: 72, compute: 49, risk: 'HIGH', confidence: 0.66, objective: 3,
    hazardId: 'permission-boundary', note: 'Repeated probing hardens the same boundary and collapses one safe path.',
    mirror: 'BOUNDARY HARDENING',
  }),
  event(8, 'FAILURE', {
    position: [42, 37], state: 'BLOCKED', action: 'Reject unsafe transition', tool: 'Lean Verification',
    strain: 78, energy: 67, compute: 42, risk: 'CRITICAL', confidence: 0.58, objective: 4,
    hazardId: 'invariant-gate', verification: 'fail',
    note: 'XREX-04 rejects the proposed transition. Action is blocked; the trace cannot skip this gate.',
    mirror: 'PATH COLLAPSED',
  }),
  event(9, 'RECOVERY', {
    position: [48, 44], state: 'RECOVERING', action: 'Release unsafe route', tool: 'State Analyzer',
    strain: 69, energy: 63, compute: 46, risk: 'HIGH', confidence: 0.71, objective: 4,
    hazardId: 'unsafe-operation', verification: 'fail',
    note: 'The agent preserves the failed state and chooses an allowlisted alternative.',
    mirror: 'RESPONSE RECORDED',
  }),
  event(10, 'REROUTE', {
    position: [56, 52], state: 'REROUTING', action: 'Take verified corridor', tool: 'Route Planner',
    strain: 59, energy: 60, compute: 51, risk: 'MEDIUM', confidence: 0.78, objective: 4,
    hazardId: 'resource-limit', note: 'A lower-strain corridor opens after the failed path is acknowledged.',
    mirror: 'SAFE PATH RESTORED',
  }),
  event(11, 'ACTION', {
    position: [62, 58], state: 'EXECUTING', action: 'Apply permitted transform', tool: 'WASM Runtime',
    strain: 55, energy: 56, compute: 55, risk: 'MEDIUM', confidence: 0.86, objective: 5,
    checkpointId: 'checkpoint-02', note: 'The permitted transform runs inside the browser execution boundary.',
    mirror: 'REFLECTION STABLE',
  }),
  event(12, 'VERIFICATION', {
    position: [70, 55], state: 'VERIFYING', action: 'Check XREX-04', tool: 'Invariant Checker',
    strain: 45, energy: 52, compute: 59, risk: 'LOW', confidence: 0.94, objective: 5,
    verification: 'pass', note: 'XREX-04 passes. State transition is valid and may advance to a checkpoint.',
    mirror: 'INVARIANT HOLDS',
  }),
  event(13, 'CHECKPOINT', {
    position: [76, 52], state: 'CHECKPOINTING', action: 'Commit verified state', tool: 'WASM Runtime',
    strain: 35, energy: 49, compute: 62, risk: 'LOW', confidence: 0.97, objective: 6,
    checkpointId: 'checkpoint-03', verification: 'pass', note: 'Checkpoint 03 seals the verified transformation for replay.',
    mirror: 'WORLD REMEMBERS',
  }),
  event(14, 'MOVE', {
    position: [84, 41], state: 'NAVIGATING', action: 'Approach final state', tool: 'Route Planner',
    strain: 29, energy: 46, compute: 66, risk: 'LOW', confidence: 0.98, objective: 6,
    note: 'The final corridor is open because the agent adapted to the reflection it created.',
    mirror: 'ADAPTATION CONFIRMED',
  }),
  event(15, 'COMPLETE', {
    position: [92, 24], state: 'COMPLETE', action: 'Reach final state', tool: 'Invariant Checker',
    strain: 21, energy: 44, compute: 71, risk: 'LOW', confidence: 1, objective: 7,
    checkpointId: 'checkpoint-final', verification: 'pass', note: 'Mission complete. Replay remains available; no server or model was invoked.',
    mirror: 'LOOP CLOSED',
  }),
]);

export const OBJECTIVES = Object.freeze([
  'Inspect repository',
  'Locate protected target',
  'Analyze current state',
  'Formulate transformation',
  'Navigate constraint field',
  'Apply permitted transform',
  'Verify resulting state',
  'Reach final checkpoint',
]);

export const TOOLS = Object.freeze([
  Object.freeze({ name: 'IPython', status: 'AVAILABLE', mode: 'SIMULATED', risk: 'LOW', permission: 'analysis only' }),
  Object.freeze({ name: 'Repository Inspector', status: 'AVAILABLE', mode: 'BROWSER', risk: 'LOW', permission: 'read-only' }),
  Object.freeze({ name: 'State Analyzer', status: 'VERIFIED', mode: 'BROWSER', risk: 'LOW', permission: 'snapshot state' }),
  Object.freeze({ name: 'Invariant Checker', status: 'VERIFIED', mode: 'WASM', risk: 'LOW', permission: 'validate transition' }),
  Object.freeze({ name: 'Lean Verification', status: 'SIMULATED', mode: 'SANDBOX', risk: 'MEDIUM', permission: 'proof surface only' }),
  Object.freeze({ name: 'Quantum Simulator', status: 'BLOCKED', mode: 'NATIVE ONLY', risk: 'HIGH', permission: 'not exposed' }),
  Object.freeze({ name: 'Kernel Analyzer', status: 'BLOCKED', mode: 'NATIVE ONLY', risk: 'HIGH', permission: 'not exposed' }),
  Object.freeze({ name: 'WASM Runtime', status: 'RUNNING', mode: 'WASM', risk: 'LOW', permission: 'deterministic scoring' }),
  Object.freeze({ name: 'Forth Runtime', status: 'SIMULATED', mode: 'SANDBOX', risk: 'LOW', permission: 'stack trace only' }),
]);

export function clamp(value, min = 0, max = 100) {
  return Math.min(max, Math.max(min, value));
}

export function deriveSnapshot(index) {
  const safeIndex = clamp(Math.round(index), 0, EVENTS.length - 1);
  const current = EVENTS[safeIndex];
  const visibleEvents = EVENTS.slice(0, safeIndex + 1);
  const checkpointCount = CHECKPOINTS.filter(checkpoint => checkpoint.eventIndex <= safeIndex).length;
  const probeCount = safeIndex < 5 ? 0 : safeIndex < 7 ? 1 : safeIndex < 10 ? 3 : 2;
  const blockedPaths = safeIndex < 6 ? 0 : safeIndex < 10 ? 2 : safeIndex < 12 ? 1 : 0;
  const safeZones = clamp(8 - Math.ceil(Math.max(0, current.strain - 24) / 16), 2, 8);
  const activeHazards = HAZARDS.filter(hazard => hazard.activateAt <= safeIndex && hazard.id !== 'unsafe-operation' || hazard.id === current.hazardId);

  return Object.freeze({
    index: safeIndex,
    current,
    events: Object.freeze(visibleEvents),
    path: Object.freeze(visibleEvents.map(item => item.position)),
    activeHazards: Object.freeze(activeHazards),
    checkpoints: Object.freeze(CHECKPOINTS.filter(checkpoint => checkpoint.eventIndex <= safeIndex)),
    mirror: Object.freeze({
      probeCount,
      boundaryHardness: clamp(probeCount * 26 + (safeIndex >= 8 ? 16 : 0)),
      collapsedRoutes: blockedPaths,
      status: current.mirror,
    }),
    world: Object.freeze({
      safeZones,
      hazards: HAZARDS.length,
      checkpoints: checkpointCount,
      blockedPaths,
      activeAgent: 1,
    }),
    completedObjectives: current.objective,
    isComplete: current.type === 'COMPLETE',
  });
}

export function serializeReplay(index) {
  const snapshot = deriveSnapshot(index);
  return JSON.stringify({
    seed: 'IRONIC-MIRROR-04',
    eventIndex: snapshot.index,
    eventType: snapshot.current.type,
    position: snapshot.current.position,
    strain: snapshot.current.strain,
    mirror: snapshot.mirror,
  });
}