/*
 * Lightweight i18n module. All user-facing strings are collected here so the app
 * can be translated by swapping or extending the locale object. The current
 * implementation is English-only; a future iteration could load locale files
 * dynamically based on a user preference.
 */

const en = {
  /* General */
  appTitle: 'Check List',
  appTagline: 'Offline-first proof of concept for template-driven quality reports.',
  checkingConnection: 'Checking connection',
  online: 'Online',
  offline: 'Offline',
  noChanges: 'No changes',

  /* Sync */
  syncingTemplates: 'Syncing templates',
  templatesSynced: 'Templates synced',
  syncFailed: 'Sync failed, using cache',
  offlineMode: 'Offline mode',

  /* Reports */
  noReportSelected: 'No report selected',
  noReportSelectedHint: 'Start by syncing templates and creating a local draft.',
  noLocalReports: 'No local reports yet.',
  selectTemplate: 'Select a template first',
  templateNotAvailable: 'Template not available locally',
  newReportCreated: 'New report created',
  reportDeleted: 'Report deleted',
  deleteReportConfirm: 'Delete local report {0}?',
  draftUpdated: 'Draft updated',
  statusChanged: 'Status changed',
  saved: 'Saved {0}',

  /* Submission */
  submitting: 'Submitting report…',
  submitted: 'Report submitted to server',
  submitFailed: 'Submission failed',
  goOnlineToSubmit: 'Go online to submit a report',

  /* Validation */
  readyForExport: 'Ready for export validation',
  noBlockingIssues: 'No blocking validation issues detected for the current draft.',
  noValidationIssues: 'No validation issues.',
  issueCount: '{0} issue(s) to resolve',
  issueReadyWarning: 'The report is marked ready, but validation still has blocking items.',
  issueDraftHint: 'Draft save is still allowed, but export should be blocked until these issues are fixed.',
  templateUnavailable: 'Template unavailable',
  validationNeedsTemplate: 'Validation cannot run until the template is cached again.',
  required: 'value is required.',
  numberInvalid: 'number is invalid.',
  numberMin: 'must be at least {0}.',
  imageRequired: 'at least one image is required.',
  templateMissing: 'Template definition missing for this report version.',

  /* Attachments */
  noImagesAttached: 'No images attached yet.',
  maxAttachments: 'Only {0} attachment(s) allowed',
  imageSkipped: 'Image skipped: {0}',
  imagesUpdated: 'Images updated',
  attachmentRemoved: 'Attachment removed',
  unsupportedFileType: 'Unsupported file type: {0}',
  fileExceedsLimit: 'File exceeds limit: {0}',
  optimizeFailed: 'Failed to optimize image: {0}',
  optimizedStillExceeds: 'Optimized image still exceeds limit: {0}',

  /* Admin */
  savingImagePolicy: 'Saving image policy',
  imagePolicySaved: 'Image policy saved',
  goOnlineToSave: 'Go online to save admin settings',
  policyNameRequired: 'Policy name is required',
  addMimeType: 'Add at least one MIME type',
  maxFileSizePositive: 'Max file size must be greater than 0',
  maxWidthPositive: 'Max width must be a positive number',
  maxHeightPositive: 'Max height must be a positive number',
  jpegQualityRange: 'JPEG quality must be between 1 and 100',
  maxAttachmentsPositive: 'Max attachments must be a positive number',

  /* Template management */
  publishingVersion: 'Publishing version…',
  versionPublished: 'Template version published',
  publishFailed: 'Failed to publish version',

  /* Export */
  exportStarted: 'Preparing export…',
  exportComplete: 'Export ready — file downloaded',
  exportFailed: 'Export failed',
  noReportToExport: 'Open a report before exporting',
  noTemplateForExport: 'Template definition needed for export',

  /* Search */
  searchPlaceholder: 'Search reports…',

  /* Misc */
  noTemplatesCached: 'No cached templates available',
  liveConfig: 'Live server configuration',
  offlineCachedConfig: 'Offline cached configuration',
  noImageRulesLoaded: 'No image rules loaded',
  imagePolicyHint: 'Load server configuration to see image limits and optimization rules.'
};

let currentLocale = en;

/*
 * Retrieve a translated string by key. Optional positional parameters replace
 * {0}, {1}, etc. placeholders.
 */
export function t(key, ...params) {
  let text = currentLocale[key] ?? key;

  for (let i = 0; i < params.length; i++) {
    text = text.replace(`{${i}}`, String(params[i]));
  }

  return text;
}

export function setLocale(locale) {
  currentLocale = { ...en, ...locale };
}