/**
 * cli:derive-pwa-spec — validate.ts
 */
import { validatePwaMetaV1 } from '../../../lib/pwa-meta.js'
import { DerivePwaSpecInputSchema, type ValidationResult } from './types.js'

export function validate(raw: unknown): ValidationResult {
  const result = DerivePwaSpecInputSchema.safeParse(raw)
  if (!result.success) {
    return {
      valid: false,
      errors: result.error.issues.map((i) => `[${i.path.join('.')}] ${i.message}`),
      warnings: [],
    }
  }
  const errors: string[] = []
  for (const update of result.data.updates) {
    if (update.pwa === null) continue
    const err = validatePwaMetaV1(update.pwa)
    if (err) errors.push(`[updates.${update.app}/${update.module}/${update.pagespec}] ${err}`)
  }
  if (result.data.updates.length > 0 && !result.data.write) {
    return {
      valid: errors.length === 0,
      errors,
      warnings: ['updates provided without write: true — running in report-only mode, nothing will be persisted.'],
    }
  }
  return { valid: errors.length === 0, errors, warnings: [] }
}