import { describe, it, expect, vi, afterEach } from 'vitest';
import { EventBuilder } from '../src/event-builder.js';
import { ResolvedConfig } from '../src/config.js';
import {
  TaskType,
  Complexity,
  Harness,
  Provider,
  Outcome,
  QualityGate,
  RepoSizeCategory,
} from '../src/types/events.js';

function makeConfig(): ResolvedConfig {
  return {
    serverUrl: 'https://tel.example.com',
    apiKey: 'a'.repeat(64),
    instanceId: 'my-instance-uuid',
    enabled: true,
    submitIntervalMs: 300_000,
    maxQueueSize: 1000,
    batchSize: 100,
    requestTimeoutMs: 10_000,
    predictionCacheTtlMs: 21_600_000,
    dryRun: false,
    maxRetries: 3,
    onError: () => {},
  };
}

describe('EventBuilder', () => {
  afterEach(() => {
    vi.restoreAllMocks();
  });

  it('should build a complete TaskCompletionEvent', () => {
    const builder = new EventBuilder(makeConfig());
    const event = builder.build({
      task_duration_ms: 15000,
      task_type: TaskType.IMPLEMENTATION,
      complexity: Complexity.HIGH,
      harness: Harness.CLAUDE_CODE,
      model: 'claude-3-opus',
      provider: Provider.ANTHROPIC,
      estimated_input_tokens: 2000,
      estimated_output_tokens: 1000,
      actual_input_tokens: 2200,
      actual_output_tokens: 1100,
      estimated_cost_usd_micros: 100000,
      actual_cost_usd_micros: 110000,
      quality_gate_passed: true,
      quality_gates_run: [QualityGate.BUILD, QualityGate.TEST, QualityGate.LINT],
      quality_gates_failed: [],
      context_compactions: 2,
      context_rotations: 1,
      context_utilization_final: 0.75,
      outcome: Outcome.SUCCESS,
      retry_count: 0,
      language: 'typescript',
      repo_size_category: RepoSizeCategory.MEDIUM,
    });

    expect(event.task_type).toBe(TaskType.IMPLEMENTATION);
    expect(event.complexity).toBe(Complexity.HIGH);
    expect(event.model).toBe('claude-3-opus');
    expect(event.quality_gates_run).toEqual([
      QualityGate.BUILD,
      QualityGate.TEST,
      QualityGate.LINT,
    ]);
    expect(event.language).toBe('typescript');
    expect(event.repo_size_category).toBe(RepoSizeCategory.MEDIUM);
  });

  it('should auto-generate event_id as UUID', () => {
    const builder = new EventBuilder(makeConfig());
    const event = builder.build({
      task_duration_ms: 1000,
      task_type: TaskType.TESTING,
      complexity: Complexity.LOW,
      harness: Harness.AIDER,
      model: 'gpt-4',
      provider: Provider.OPENAI,
      estimated_input_tokens: 100,
      estimated_output_tokens: 50,
      actual_input_tokens: 100,
      actual_output_tokens: 50,
      estimated_cost_usd_micros: 1000,
      actual_cost_usd_micros: 1000,
      quality_gate_passed: true,
      quality_gates_run: [],
      quality_gates_failed: [],
      context_compactions: 0,
      context_rotations: 0,
      context_utilization_final: 0.3,
      outcome: Outcome.SUCCESS,
      retry_count: 0,
    });

    // UUID format: 8-4-4-4-12 hex chars
    expect(event.event_id).toMatch(
      /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/,
    );

    // Each event should get a unique ID
    const event2 = builder.build({
      task_duration_ms: 1000,
      task_type: TaskType.TESTING,
      complexity: Complexity.LOW,
      harness: Harness.AIDER,
      model: 'gpt-4',
      provider: Provider.OPENAI,
      estimated_input_tokens: 100,
      estimated_output_tokens: 50,
      actual_input_tokens: 100,
      actual_output_tokens: 50,
      estimated_cost_usd_micros: 1000,
      actual_cost_usd_micros: 1000,
      quality_gate_passed: true,
      quality_gates_run: [],
      quality_gates_failed: [],
      context_compactions: 0,
      context_rotations: 0,
      context_utilization_final: 0.3,
      outcome: Outcome.SUCCESS,
      retry_count: 0,
    });

    expect(event.event_id).not.toBe(event2.event_id);
  });

  it('should auto-set timestamp to ISO 8601', () => {
    const now = new Date('2026-02-07T10:00:00.000Z');
    vi.setSystemTime(now);

    const builder = new EventBuilder(makeConfig());
    const event = builder.build({
      task_duration_ms: 1000,
      task_type: TaskType.DEBUGGING,
      complexity: Complexity.MEDIUM,
      harness: Harness.OPENCODE,
      model: 'claude-3-sonnet',
      provider: Provider.ANTHROPIC,
      estimated_input_tokens: 500,
      estimated_output_tokens: 200,
      actual_input_tokens: 500,
      actual_output_tokens: 200,
      estimated_cost_usd_micros: 5000,
      actual_cost_usd_micros: 5000,
      quality_gate_passed: false,
      quality_gates_run: [QualityGate.TEST],
      quality_gates_failed: [QualityGate.TEST],
      context_compactions: 0,
      context_rotations: 0,
      context_utilization_final: 0.4,
      outcome: Outcome.FAILURE,
      retry_count: 1,
    });

    expect(event.timestamp).toBe('2026-02-07T10:00:00.000Z');
  });

  it('should set instance_id from config', () => {
    const config = makeConfig();
    const builder = new EventBuilder(config);
    const event = builder.build({
      task_duration_ms: 1000,
      task_type: TaskType.PLANNING,
      complexity: Complexity.LOW,
      harness: Harness.UNKNOWN,
      model: 'test-model',
      provider: Provider.UNKNOWN,
      estimated_input_tokens: 0,
      estimated_output_tokens: 0,
      actual_input_tokens: 0,
      actual_output_tokens: 0,
      estimated_cost_usd_micros: 0,
      actual_cost_usd_micros: 0,
      quality_gate_passed: true,
      quality_gates_run: [],
      quality_gates_failed: [],
      context_compactions: 0,
      context_rotations: 0,
      context_utilization_final: 0,
      outcome: Outcome.SUCCESS,
      retry_count: 0,
    });

    expect(event.instance_id).toBe('my-instance-uuid');
  });

  it('should set schema_version to 1.0', () => {
    const builder = new EventBuilder(makeConfig());
    const event = builder.build({
      task_duration_ms: 1000,
      task_type: TaskType.REFACTORING,
      complexity: Complexity.CRITICAL,
      harness: Harness.KILO_CODE,
      model: 'gemini-pro',
      provider: Provider.GOOGLE,
      estimated_input_tokens: 3000,
      estimated_output_tokens: 2000,
      actual_input_tokens: 3000,
      actual_output_tokens: 2000,
      estimated_cost_usd_micros: 80000,
      actual_cost_usd_micros: 80000,
      quality_gate_passed: true,
      quality_gates_run: [QualityGate.TYPECHECK],
      quality_gates_failed: [],
      context_compactions: 5,
      context_rotations: 2,
      context_utilization_final: 0.95,
      outcome: Outcome.SUCCESS,
      retry_count: 0,
    });

    expect(event.schema_version).toBe('1.0');
  });
});