/**
 * S6: Qualify thread - Qualify command handler
 *
 * Responsibilities:
 * - Load config and resolve profile
 * - Block prod runs by default (policy engine)
 * - Run scenario/stateful/chaos based on profile
 * - Generate seed if omitted, always print it
 * - Rich artifact emission with step traces
 * - Handle cleanup failures separately
 * - Exit 0 on pass, 1 on qualification failure, 2 on safety violation
 *
 * Architecture:
 * - Dependency injection: all dependencies passed explicitly
 * - No optional imports — everything is required or injected
 * - Inline comments for documentation
 */

import type { CliContext } from '../../core/context.js'
import { loadConfig } from '../../core/config-loader.js'
import { PolicyEngine, detectEnvironment } from '../../core/policy-engine.js'

import { SUCCESS, BEHAVIORAL_FAILURE, USAGE_ERROR, INTERNAL_ERROR } from '../../core/exit-codes.js'
import type { CommandResult, Artifact, FailureRecord } from '../../core/types.js'
import { classifyError, ErrorTaxonomy } from '../../core/error-taxonomy.js'
import {
  runQualify,
  resolveProfileGates,
  type QualifyRunResult,
  type StepTrace,
  type CleanupFailure,
} from './runner.js'
import { isGitRepo, filterChangedRoutes } from '../verify/runner.js'
import { SeededRng } from '../../../infrastructure/seeded-rng.js'
import type { ScenarioConfig, TestConfig, RouteContract, ChaosConfig } from '../../../types.js'
import { renderHumanArtifact } from '../../renderers/human.js'
import { renderJson, renderJsonArtifact, renderJsonSummaryArtifact } from '../../renderers/json.js'
import { renderNdjsonArtifact, renderNdjsonSummaryArtifact } from '../../renderers/ndjson.js'
import type { OutputContext } from '../../renderers/shared.js'
import { resolve } from 'node:path'

const ROUTE_IDENTITY_PATTERN = /^[A-Z]+\s+\/\S*$/

function normalizeRouteIdentity(route: string): string {
  const normalized = route.trim().replace(/\s+/g, ' ')
  const [method, ...pathParts] = normalized.split(' ')
  if (!method || pathParts.length === 0) {
    return normalized
  }
  return `${method.toUpperCase()} ${pathParts.join(' ')}`
}

function isReplayCompatibleRoute(route: string): boolean {
  return ROUTE_IDENTITY_PATTERN.test(route)
}

function coerceTimeout(value: unknown): number | undefined {
  return typeof value === 'number' ? value : undefined
}

// ---------------------------------------------------------------------------
// Types
// ---------------------------------------------------------------------------

export interface QualifyOptions {
  profile?: string
  seed?: number
  changed?: boolean
  config?: string
  cwd?: string
  format?: 'human' | 'json' | 'ndjson'
  quiet?: boolean
  verbose?: boolean
  artifactDir?: string
}

interface FastifyAppLike {
  ready?: () => Promise<void>
  close?: () => Promise<void>
}

// ---------------------------------------------------------------------------
// Seed generation
// ---------------------------------------------------------------------------

/**
 * Generate a deterministic seed if none provided.
 * Uses current time + process pid + counter for uniqueness.
 */
let seedCounter = 0
export function generateSeed(): number {
  seedCounter++
  return Date.now() + (process.pid || 0) + seedCounter
}

// ---------------------------------------------------------------------------
// Route discovery helper
// ---------------------------------------------------------------------------

/**
 * Discover routes from the Fastify app for chaos execution.
 * Uses the shared discovery module for capture + fallback support.
 */
async function discoverAppRoutes(fastify: unknown): Promise<RouteContract[]> {
  const { discoverRoutes } = await import('../../../domain/discovery.js')
  return discoverRoutes(fastify as { routes?: Array<{ method: string; url: string; schema?: Record<string, unknown> } >; hasRoute?: (opts: { method: string; url: string }) => boolean; printRoutes?: () => string })
}

// ---------------------------------------------------------------------------
// Scenario builder from profile
// ---------------------------------------------------------------------------

/**
 * Build scenario configs from profile routes for protocol-lab fixture.
 * Creates an OAuth-like multi-step scenario.
 */
function buildScenarioConfigs(routes: string[], seed: number): ScenarioConfig[] {
  // For the protocol-lab fixture, build the OAuth scenario
  const hasOAuth = routes.some(r => r.includes('/oauth/authorize'))
  if (!hasOAuth) return []

  const rng = new SeededRng(seed)
  const clientId = `client-${Math.floor(rng.next() * 10000)}`

  return [{
    name: 'oauth-flow',
    steps: [
      {
        name: 'authorize',
        request: {
          method: 'POST',
          url: '/oauth/authorize',
          body: {
            client_id: clientId,
            redirect_uri: 'http://localhost/callback',
            scope: 'read',
          },
        },
        expect: ['status:200', 'response_body(this).code != null'],
        capture: { code: 'response_body(this).code' },
      },
      {
        name: 'token',
        request: {
          method: 'POST',
          url: '/oauth/token',
          body: {
            code: '$authorize.code',
            client_id: clientId,
            client_secret: 'secret',
            redirect_uri: 'http://localhost/callback',
          },
        },
        expect: ['status:200', 'response_body(this).access_token != null'],
        capture: { accessToken: 'response_body(this).access_token' },
      },
      {
        name: 'user',
        request: {
          method: 'GET',
          url: '/api/user',
          headers: {
            authorization: 'Bearer $token.accessToken',
          },
        },
        expect: ['status:200', 'response_body(this).id != null'],
      },
    ],
  }]
}

// ---------------------------------------------------------------------------
// Artifact builder
// ---------------------------------------------------------------------------

/**
 * Build a rich artifact document from qualify results.
 * Includes step traces, cleanup failures, and replay info.
 */
export function buildArtifact(
  runResult: QualifyRunResult,
  options: {
    cwd: string
    configPath?: string
    profile?: string
    preset?: string
    env: string
    seed: number
  },
): Artifact {
  const failures: FailureRecord[] = []
  const warnings: string[] = []
  const replayCompatibleExecutedRoutes = (runResult.executedRoutes || [])
    .map(normalizeRouteIdentity)
    .filter(isReplayCompatibleRoute)

  // Collect scenario failures
  for (const scenario of runResult.scenarioResults) {
    if (!scenario.ok) {
      for (let stepIdx = 0; stepIdx < scenario.steps.length; stepIdx++) {
        const step = scenario.steps[stepIdx]!
        if (!step.ok && step.diagnostics) {
          // Use actual HTTP route from step trace for stable replay identity
          const trace = runResult.stepTraces.find(
            t => t.name === step.name && t.status === 'failed'
          )
          const route = normalizeRouteIdentity(trace?.route || `${scenario.name} / ${step.name}`)
          if (!isReplayCompatibleRoute(route)) {
            warnings.push(`Scenario step "${scenario.name}/${step.name}" did not resolve to METHOD /path route identity.`)
          }
          failures.push({
            route,
            contract: step.diagnostics.formula || 'scenario-step',
            expected: step.diagnostics.expected || 'success',
            observed: step.diagnostics.error || 'failure',
            seed: runResult.seed,
            replayCommand: `apophis replay --artifact <artifact-path-unavailable>`,
            category: step.diagnostics.error ? classifyError(step.diagnostics.error) : ErrorTaxonomy.RUNTIME,
            diff: step.diagnostics.diff ?? undefined,
            actual: step.diagnostics.actual ?? undefined,
          })
        }
      }
    }
  }

  // Collect stateful failures
  if (runResult.statefulResult) {
    let fallbackRouteIdx = 0
    for (const test of runResult.statefulResult.tests) {
      if (!test.ok) {
        let route = normalizeRouteIdentity(test.name)
        if (!isReplayCompatibleRoute(route)) {
          route = replayCompatibleExecutedRoutes[fallbackRouteIdx] || route
          fallbackRouteIdx++
        }
        if (!isReplayCompatibleRoute(route)) {
          warnings.push(`Stateful failure "${test.name}" did not resolve to METHOD /path route identity.`)
        }
        failures.push({
          route,
          contract: test.diagnostics?.formula || 'stateful-test',
          expected: test.diagnostics?.expected || 'success',
          observed: test.diagnostics?.error || 'failure',
          seed: runResult.seed,
          replayCommand: `apophis replay --artifact <artifact-path-unavailable>`,
          category: test.diagnostics?.error ? classifyError(test.diagnostics.error) : ErrorTaxonomy.RUNTIME,
          diff: test.diagnostics?.diff ?? undefined,
          actual: test.diagnostics?.actual ?? undefined,
        })
      }
    }
  }

  const totalTests =
    runResult.scenarioResults.reduce((sum, s) => sum + s.steps.length, 0) +
    (runResult.statefulResult?.summary.passed ?? 0) +
    (runResult.statefulResult?.summary.failed ?? 0)

  const passedTests =
    runResult.scenarioResults.reduce((sum, s) => sum + s.summary.passed, 0) +
    (runResult.statefulResult?.summary.passed ?? 0)

  if (runResult.cleanupFailures.length > 0) {
    warnings.push(
      `Cleanup failures: ${runResult.cleanupFailures.map(c => `${c.resource}: ${c.error}`).join(', ')}`
    )
  }

  // Build cleanup outcomes from cleanup failures
  const cleanupOutcomes = runResult.cleanupFailures.map(cf => ({
    resource: cf.resource,
    cleaned: false,
    error: cf.error,
  }))

  // Build execution summary from runner result
  const executionSummary = runResult.executionSummary

  // Build per-gate coverage breakdown for clear artifact interpretation
  const scenarioRoutes = [...new Set(
    runResult.stepTraces
      .filter(t => t.status === 'passed' || t.status === 'failed')
      .map(t => t.route)
      .filter(Boolean)
  )]
  const statefulRoutes = runResult.statefulResult
    ? [...new Set(
        runResult.statefulResult.tests
          .filter(t => !t.directive)
          .map(t => normalizeRouteIdentity(t.name))
      )]
    : []
  const chaosRoutesPlanned: string[] = []
  const chaosRoutesExecuted: string[] = []
  for (const r of runResult.chaosResults ?? []) {
    if (r.applied) chaosRoutesExecuted.push(r.route)
  }
  // Infer planned from chaos results or executionSummary
  if (executionSummary.chaosRoutesPlanned > 0 && chaosRoutesExecuted.length > 0) {
    chaosRoutesPlanned.push(...chaosRoutesExecuted)
  }

  const coverageBreakdown = {
    scenario: {
      routesCovered: scenarioRoutes,
      stepsTotal: executionSummary.totalSteps,
      stepsPassed: runResult.scenarioResults.reduce((sum, s) => sum + s.summary.passed, 0),
    },
    stateful: {
      routesCovered: statefulRoutes,
      testsTotal: executionSummary.statefulTestsRun,
      testsPassed: runResult.statefulResult?.summary.passed ?? 0,
    },
    chaos: {
      routesPlanned: chaosRoutesPlanned,
      routesExecuted: chaosRoutesExecuted,
      runsTotal: executionSummary.chaosRunsRun,
      runsPassed: (runResult.chaosResults ?? []).filter(r => r.contractsPassed).length,
    },
  }

  // Build profile gates from the result context
  // We need to pass gates through or infer from results
  const profileGates = {
    scenario: runResult.scenarioResults.length > 0 || executionSummary.scenariosRun > 0,
    stateful: (runResult.statefulResult?.tests.length ?? 0) > 0 || executionSummary.statefulTestsRun > 0,
    chaos: executionSummary.chaosRoutesPlanned > 0,
  }

  // Deterministic parameters for audit
  const deterministicParams = {
    seed: runResult.seed,
    profileGates,
  }

  return {
    version: 'apophis-artifact/1',
    command: 'qualify',
    mode: 'qualify',
    cwd: options.cwd,
    configPath: options.configPath,
    profile: options.profile,
    preset: options.preset,
    env: options.env,
    seed: options.seed,
    startedAt: new Date(Date.now() - runResult.durationMs).toISOString(),
    durationMs: runResult.durationMs,
    summary: {
      total: totalTests,
      passed: passedTests,
      failed: failures.length,
      skipped: (runResult.statefulResult?.summary.skipped ?? 0),
    },
    executionSummary,
    coverageBreakdown,
    executedRoutes: (runResult.executedRoutes || []).map(normalizeRouteIdentity),
    skippedRoutes: (runResult.skippedRoutes || []).map(sr => ({
      route: sr.route,
      executed: false,
      reason: sr.reason,
    })),
    stepTraces: runResult.stepTraces,
    cleanupOutcomes,
    profileGates,
    deterministicParams,
    failures,
    artifacts: [],
    warnings,
    exitReason: runResult.passed ? 'success' : 'behavioral_failure',
  }
}

function attachReplayCommands(artifact: Artifact, artifactPath: string): void {
  for (const failure of artifact.failures) {
    failure.replayCommand = `apophis replay --artifact ${artifactPath}`
  }
}

async function emitArtifact(
  artifact: Artifact,
  options: {
    command: 'qualify'
    cwd: string
    preferredDir?: string
    force: boolean
  },
): Promise<string | undefined> {
  if (!options.force && !options.preferredDir) {
    return undefined
  }

  const defaultDir = resolve(options.cwd, 'reports', 'apophis')
  const candidateDirs = [options.preferredDir, defaultDir].filter(Boolean) as string[]
  const attempted = new Set<string>()

  for (const dir of candidateDirs) {
    if (attempted.has(dir)) continue
    attempted.add(dir)
    try {
      const { mkdirSync, writeFileSync } = await import('node:fs')
      const artifactPath = resolve(dir, `${options.command}-${new Date().toISOString().replace(/[:.]/g, '-')}.json`)
      mkdirSync(dir, { recursive: true })
      attachReplayCommands(artifact, artifactPath)
      writeFileSync(artifactPath, JSON.stringify(artifact, null, 2))
      if (!artifact.artifacts.includes(artifactPath)) {
        artifact.artifacts.push(artifactPath)
      }
      return artifactPath
    } catch {
      // Try fallback directory if available.
    }
  }

  artifact.warnings.push('Failed to write artifact to disk')
  return undefined
}

// ---------------------------------------------------------------------------
// Output formatting
// ---------------------------------------------------------------------------

// ---------------------------------------------------------------------------
// Main command handler
// ---------------------------------------------------------------------------

/**
 * Main qualify command handler.
 *
 * Flow:
 * 1. Load and resolve config
 * 2. Run policy engine checks (block prod by default)
 * 3. Generate seed if omitted, always print it
 * 4. Resolve profile gates (scenario/stateful/chaos)
 * 5. Build scenario configs from profile routes
 * 6. Run execution modes
 * 7. Build rich artifact with step traces
 * 8. Handle cleanup failures separately
 * 9. Return appropriate exit code
 */
export async function qualifyCommand(
  options: QualifyOptions,
  ctx: CliContext,
): Promise<CommandResult> {
  const {
    profile,
    seed: explicitSeed,
    changed,
    config: configPath,
    cwd,
    artifactDir,
  } = options
  const workingDir = cwd || ctx.cwd
  const format = options.format || ctx.options.format || 'human'

  // Detect environment
  const env = detectEnvironment()

  try {
    // 1. Load config
    const loadResult = await loadConfig({
      cwd: workingDir,
      configPath,
      profileName: profile,
      env,
    })

    if (!loadResult.configPath) {
      return {
        exitCode: USAGE_ERROR,
        message: 'No config found. Run "apophis init" to create one.',
      }
    }

    const config = loadResult.config

    // 2. Run policy engine checks
    const policyEngine = new PolicyEngine({
      config,
      env,
      mode: 'qualify',
      profileName: profile || undefined,
      presetName: loadResult.presetName || undefined,
    })

    const policyResult = policyEngine.check()

    if (!policyResult.allowed) {
      const message = [
        'Policy check failed:',
        ...policyResult.errors.map(e => `  ✗ ${e}`),
      ].join('\n')

      return {
        exitCode: USAGE_ERROR,
        message,
      }
    }

    // 3. Generate seed if omitted
    const seed = explicitSeed ?? generateSeed()
    if (!ctx.options.quiet && format === 'human') {
      console.log(`Seed: ${seed}`)
    }

    // 4. Resolve profile gates
    const profileDef = profile ? config.profiles?.[profile] : undefined
    const gates = resolveProfileGates(profileDef?.features)

    // 5. Build scenario configs from profile routes and config
    const routes = profileDef?.routes ?? []
    const fixtureScenarios = buildScenarioConfigs(routes, seed)

    const configScenarios: ScenarioConfig[] = (config.scenarios ?? []).map(s => ({
      name: s.name,
      steps: s.steps.map(step => ({
        name: step.name,
        request: {
          method: step.request.method as ScenarioConfig['steps'][0]['request']['method'],
          url: step.request.url,
          body: step.request.body,
          headers: step.request.headers,
        },
        expect: step.expect,
        capture: step.capture,
      })),
    }))

    const scenarios = [...fixtureScenarios, ...configScenarios]

    // 6. Build stateful config
    const presetName = profileDef?.preset
    const preset = presetName ? config.presets?.[presetName] : undefined
    const presetTimeout = coerceTimeout((preset as { timeout?: unknown } | undefined)?.timeout)
    const statefulConfig: TestConfig | undefined = gates.stateful
      ? {
          seed,
          timeout: presetTimeout,
          routes: profileDef?.routes,
        }
      : undefined

    // 7. Build chaos config
    const chaosConfig: ChaosConfig | undefined = gates.chaos && preset?.chaos
      ? {
          probability: 0.5,
          strategy: preset.chaosStrategy as ChaosConfig['strategy'],
          sampleSize: preset.chaosSampleSize,
          sampleRoutes: preset.chaosSampleRoutes,
          delay: { probability: 0.3, minMs: 100, maxMs: 500 },
          error: { probability: 0.2, statusCode: 503 },
          dropout: { probability: 0.2, statusCode: 504 },
          corruption: { probability: 0.1 },
        }
      : undefined

    // 8. Load the Fastify app for execution
    let fastify: FastifyAppLike | undefined
    let appEntrypoint: string | undefined
    try {
      const { loadApp } = await import('../../core/app-loader.js')
      const loaded = await loadApp(workingDir)
      fastify = loaded.fastify as FastifyAppLike
      appEntrypoint = loaded.entrypoint
      if (fastify && typeof fastify.ready === 'function') {
        await fastify.ready()
      }
    } catch (err) {
      const errorMessage = err instanceof Error ? err.message : String(err)
      return {
        exitCode: USAGE_ERROR,
        message: `Failed to load Fastify app.\n\nError: ${errorMessage}\n\nApp file candidates (searched in order):\n  app.js, app.ts, server.js, server.ts, index.js, index.ts\n  src/app.js, src/app.ts, src/server.js, src/server.ts, src/index.js, src/index.ts\n\nNext:\n  Run \`apophis init\` to scaffold a working app.js and config.`,
      }
    }

    try {
      // 9. Discover routes for chaos (with discovery metadata)
      const allRoutes = await discoverAppRoutes(fastify)
      let appRoutes = allRoutes

      // 9a. Apply --changed filter
      if (changed) {
        const inGit = await isGitRepo(workingDir)
        if (!inGit) {
          return {
            exitCode: USAGE_ERROR,
            message: '--changed requires a git repository. Current directory is not inside a git repo.',
          }
        }
        appRoutes = await filterChangedRoutes(allRoutes, workingDir)
        const matched = appRoutes.length
        const total = allRoutes.length
        if (!ctx.options.quiet && format === 'human') {
          console.log(`${matched}/${total} routes match --changed filter`)
        }
        if (matched === 0) {
          return {
            exitCode: SUCCESS,
            message: `No routes changed since HEAD. All ${total} routes skipped.`,
          }
        }
      }

      // Collect discovery warnings
      const { discoverRouteDetails } = await import('../../../domain/discovery.js')
      const discoveryResult = discoverRouteDetails(fastify as { routes?: Array<{ method: string; url: string; schema?: Record<string, unknown> } >; hasRoute?: (opts: { method: string; url: string }) => boolean; printRoutes?: () => string })
      const discoveryWarnings: string[] = [
        ...discoveryResult.warnings,
      ]
      if (discoveryResult.source === 'print-routes' && !discoveryResult.hasSchemaMetadata) {
        discoveryWarnings.push(
          'Routes were discovered without schema metadata. Behavioral contracts and chaos injection may be limited. ' +
          'Register APOPHIS before defining routes or use createFastify().'
        )
      }

      // 10. Run qualify execution
      const deps = {
        fastify: fastify as any,
        seed,
        timeout: presetTimeout,
        pluginContractRegistry: (fastify as unknown as Record<string, unknown>)?._apophisPluginContractRegistry as
          import('../../../domain/plugin-contracts.js').PluginContractRegistry | undefined,
      }

      const runResult = await runQualify(deps, gates, scenarios, statefulConfig, chaosConfig, appRoutes)

      // 11. Build artifact first so we can reference it for guardrails
      const artifact = buildArtifact(runResult, {
        cwd: workingDir,
        configPath: loadResult.configPath,
        profile: profile || undefined,
        preset: presetName,
        env,
        seed,
      })

      // Drain plugin contract registry warnings if app registered APOPHIS
      const pcr = (fastify as any)?._apophisPluginContractRegistry
      if (pcr?.drainWarnings) {
        const pcrWarnings = pcr.drainWarnings()
        if (pcrWarnings.length > 0) {
          artifact.warnings.push(...pcrWarnings)
        }
      }

      // 12. Signal quality guardrails — fail if zero checks executed
      const execSummary = runResult.executionSummary
      const warnings: string[] = [...artifact.warnings, ...discoveryWarnings]

      if (execSummary.totalExecuted === 0) {
        await emitArtifact(artifact, {
          command: 'qualify',
          cwd: workingDir,
          preferredDir: artifactDir || config.artifactDir,
          force: true,
        })

        return {
          exitCode: BEHAVIORAL_FAILURE,
          message: 'Qualify failed: zero checks executed. No scenarios, stateful tests, or chaos runs were performed. Verify profile gates and app configuration.',
          artifact,
          warnings: artifact.warnings,
        }
      }

      // Warn if execution counts are suspiciously low
      if (gates.scenario && execSummary.scenariosRun === 0) {
        warnings.push('WARNING: scenario gate enabled but zero scenarios executed. Check route configuration.')
      }
      if (gates.stateful && execSummary.statefulTestsRun === 0 && execSummary.statefulSkipped > 0) {
        warnings.push(`WARNING: stateful gate enabled but all ${execSummary.statefulSkipped} commands were skipped (preconditions not met). Check required headers, scopes, or plugin contract settings.`)
      } else if (gates.stateful && execSummary.statefulTestsRun === 0) {
        warnings.push('WARNING: stateful gate enabled but zero stateful tests executed. Check app routes and schema.')
      }
      if (gates.chaos && execSummary.chaosRunsRun === 0) {
        warnings.push('WARNING: chaos gate enabled but zero chaos runs executed. Check chaos config and route availability.')
      }

      // 12. Write artifact if configured or on failure
      const shouldEmitArtifact = Boolean(artifactDir || config.artifactDir || !runResult.passed)
      await emitArtifact(artifact, {
        command: 'qualify',
        cwd: workingDir,
        preferredDir: artifactDir || config.artifactDir,
        force: shouldEmitArtifact,
      })

      // 13. Format output based on format option
      const outputCtx: OutputContext = {
        isTTY: ctx.isTTY,
        isCI: ctx.isCI,
        colorMode: ctx.options.color,
      }

      let message = ''
      if (!ctx.options.quiet) {
        if (format === 'json') {
          message = renderJsonArtifact(artifact)
        } else if (format === 'json-summary') {
          message = renderJsonSummaryArtifact(artifact)
        } else if (format === 'ndjson') {
          // For ndjson, we don't return a message string; events are streamed
          message = ''
        } else if (format === 'ndjson-summary') {
          // Concise ndjson: only summary events
          message = ''
        } else {
          // human format
          message = renderHumanArtifact(artifact, outputCtx)
        }
      }

      return {
        exitCode: runResult.passed ? SUCCESS : BEHAVIORAL_FAILURE,
        artifact,
        message,
        warnings: artifact.warnings,
      }
    } finally {
      if (fastify && typeof fastify.close === 'function') {
        try {
          await fastify.close()
        } catch (closeErr) {
          if (process.env.APOPHIS_DEBUG === '1') {
            console.error('Failed to close Fastify app after qualify run:', closeErr)
          }
        }
      }
    }
  } catch (error) {
    const message = error instanceof Error ? error.message : String(error)
    return {
      exitCode: INTERNAL_ERROR,
      message: `Internal error in qualify command: ${message}`,
    }
  }
}

// ---------------------------------------------------------------------------
// CLI adapter
// ---------------------------------------------------------------------------

/**
 * Adapter that bridges the CLI framework (cac) to the qualify command handler.
 * This function signature matches what the CLI core expects.
 */
export async function handleQualify(
  args: string[],
  ctx: CliContext,
): Promise<number> {
  const options: QualifyOptions = {
    profile: ctx.options.profile || undefined,
    seed: undefined,
    changed: false,
    config: ctx.options.config || undefined,
    cwd: ctx.cwd,
    format: ctx.options.format as QualifyOptions['format'],
    quiet: ctx.options.quiet,
    verbose: ctx.options.verbose,
    artifactDir: ctx.options.artifactDir || undefined,
  }

  const seedIdx = args.indexOf('--seed')
  if (seedIdx !== -1 && args[seedIdx + 1]) {
    const parsed = parseInt(args[seedIdx + 1]!, 10)
    if (!isNaN(parsed)) {
      options.seed = parsed
    }
  }

  if (args.includes('--changed')) {
    options.changed = true
  }

  const result = await qualifyCommand(options, ctx)
  const format = options.format || ctx.options.format || 'human'
  const machineMode = format === 'json' || format === 'ndjson' || format === 'json-summary' || format === 'ndjson-summary'

  if (!ctx.options.quiet) {
    if (format === 'json') {
      if (result.artifact) {
        console.log(renderJsonArtifact(result.artifact))
      } else {
        console.log(renderJson({
          exitCode: result.exitCode,
          message: result.message,
          warnings: result.warnings,
        }))
      }
    } else if (format === 'json-summary') {
      if (result.artifact) {
        console.log(renderJsonSummaryArtifact(result.artifact))
      } else {
        console.log(renderJson({
          exitCode: result.exitCode,
          message: result.message,
          warnings: result.warnings,
        }))
      }
    } else if (format === 'ndjson') {
      if (result.artifact) {
        renderNdjsonArtifact(result.artifact)
      } else {
        process.stdout.write(JSON.stringify({
          type: 'run.completed',
          command: 'qualify',
          exitCode: result.exitCode,
          message: result.message,
          warnings: result.warnings,
        }) + '\n')
      }
    } else if (format === 'ndjson-summary') {
      if (result.artifact) {
        renderNdjsonSummaryArtifact(result.artifact)
      } else {
        process.stdout.write(JSON.stringify({
          type: 'run.completed',
          command: 'qualify',
          exitCode: result.exitCode,
          message: result.message,
          warnings: result.warnings,
        }) + '\n')
      }
    } else if (result.message) {
      console.log(result.message)
    }
  }

  // Print warnings in human mode only
  if (!machineMode && result.warnings && result.warnings.length > 0 && !ctx.options.quiet) {
    for (const warning of result.warnings) {
      console.warn(`Warning: ${warning}`)
    }
  }

  return result.exitCode
}