import fs from 'fs';
import path from 'path';
import { fileURLToPath } from 'url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const messagesDir = path.join(__dirname, '..', 'messages');

const en = {
  common: {
    appName: 'DyoLink',
    loading: 'Loading...',
    loadingApp: 'Loading app...',
    loadingWorkspace: 'Loading workspace...',
    continue: 'Continue',
    back: 'Back',
    save: 'Save',
    cancel: 'Cancel',
    delete: 'Delete',
    edit: 'Edit',
    next: 'Next',
    dismiss: 'Dismiss',
    or: 'Or',
    and: 'and',
    close: 'Close',
    redirecting: 'Redirecting…',
    readOnlyAccess: 'Read-only access for this organization.',
    errorGeneric: 'Something went wrong',
    loadingEllipsis: 'Loading...',
    search: 'Search',
    action: 'Action',
    status: 'Status',
    name: 'Name',
    email: 'Email',
    date: 'Date',
    organization: 'Organization',
    backToApp: '← Back to app',
    copied: 'Copied',
    copyLink: 'Copy link',
    none: 'None',
    preview: 'Preview',
  },
  language: {
    label: 'Language',
    selectLanguage: 'Select language',
    en: 'English',
    fa: 'Persian',
    nl: 'Dutch',
  },
  theme: {
    switchToLight: 'Switch to light mode',
    switchToDark: 'Switch to dark mode',
    lightMode: 'Light mode',
    darkMode: 'Dark mode',
  },
  nav: {
    dashboard: 'Dashboard',
    staff: 'Staff',
    patients: 'Patients',
    appointment: 'Appointment',
    treatment: 'Treatment',
    billing: 'Billing',
    reports: 'Reports',
    clinics: 'Clinics',
    labs: 'Labs',
  },
  auth: {
    login: 'Login',
    signIn: 'Sign in',
    signOut: 'Log out',
    register: 'Register',
    startTrial: 'Start Trial',
    startFreeTrial: 'Start Free Trial',
    dashboard: 'Dashboard',
    signInTitle: 'Sign in to your account',
    signInPrompt: 'Or {link}',
    startTrialLink: 'start your free trial',
    registerTitle: 'Start your 30-day free trial',
    registerPrompt: 'Already have an account?',
    signInLink: 'Sign in',
    email: 'Email address',
    password: 'Password',
    confirmPassword: 'Confirm password',
    fullName: 'Full name',
    rememberMe: 'Remember me',
    showPassword: 'Show password',
    hidePassword: 'Hide password',
    forgotPassword: 'Forgot your password?',
    invalidCredentials: 'Invalid email or password',
    loginFailed: 'Login failed',
    registrationFailed: 'Registration failed. Please try again.',
    startMyFreeTrial: 'Start my free trial',
    trialIncludes: 'Your trial includes:',
    trialTeamMembers: 'Up to 5 team members',
    trialFullAccess: 'Full access to all features',
    trialNoCard: '30 days free, no credit card required',
    termsAgreement: 'By signing up, you agree to our {terms} and {privacy}',
    termsOfService: 'Terms of Service',
    privacyPolicy: 'Privacy Policy',
    signedIn: 'Signed in',
    switchOrganization: 'Switch organization',
    subscriptions: 'Subscriptions',
    account: 'Account',
    emailPlaceholder: 'you@example.com',
    passwordPlaceholder: '••••••••',
    namePlaceholder: 'John Doe',
    termsIntro: 'By signing up, you agree to our',
    errorRegistrationFailed: 'Registration failed',
    errorLoginFailed: 'Login failed',
    errorCreateOrganization: 'Failed to create organization',
    acceptInviteTitle: 'Accept invitation',
    loadingInvitation: 'Loading invitation...',
    invalidInvitationLink: 'Invalid invitation link',
    invitationAlreadyAccepted: 'This invitation is already accepted. You can log in now.',
    errorLoadInvitation: 'Could not load invitation',
    organizationLabel: 'Organization:',
    emailLabel: 'Email:',
    nameRequired: 'Name is required',
    passwordMinLength8: 'Password must be at least 8 characters',
    passwordsDoNotMatch: 'Passwords do not match',
    labelName: 'Name',
    labelCreatePassword: 'Create password',
    labelConfirmPassword: 'Confirm password',
    activateAccount: 'Activate account',
    invitationAcceptedRedirect: 'Invitation Accepted. Redirecting to login...',
    errorAcceptInvitation: 'Could not accept invitation',
    alreadyHaveAccess: 'Already have access?',
    goToLogin: 'Go to login',
    acceptOrganizationTitle: 'Accept organization invitation',
    alreadyHaveAccount: 'Already have an account?',
    invitedBy: 'Invited by:',
    ownerEmail: 'Owner email',
    activateOrganization: 'Activate organization',
    organizationAcceptedRedirect: 'Invitation accepted. Redirecting to login...',
    stepAccount: 'Account',
    stepOrganization: 'Organization',
    organizationName: 'Organization name',
    organizationNamePlaceholder: 'Sunshine Dental Clinic',
    organizationEmail: 'Organization email',
    organizationEmailPlaceholder: 'contact@sunshineclinic.com',
    organizationType: 'Organization type',
    dentalClinic: 'Dental Clinic',
    dentalLab: 'Dental Lab',
  },
  landing: {
    heroTitle: 'Connect Dental Clinics & Labs',
    heroHighlight: 'Seamlessly',
    heroSubtitle:
      'Streamline communication between dental professionals. Start with a 30-day free trial, no credit card required.',
    featureClinicsTitle: 'For Clinics',
    featureClinicsDescription:
      'Manage patients, appointments, and send cases to labs instantly.',
    featureLabsTitle: 'For Labs',
    featureLabsDescription: 'Receive cases, track progress, and communicate with clinics.',
    featureTeamTitle: 'Team Management',
    featureTeamDescription: 'Add up to 5 team members during trial. Scale as you grow.',
    featureTrialTitle: '30-Day Trial',
    featureTrialDescription: 'Full access to all features. No credit card required.',
    featureRealtimeTitle: 'Real-time Updates',
    featureRealtimeDescription: 'Get instant notifications on case status changes.',
    featureSecurityTitle: 'Secure & Compliant',
    featureSecurityDescription: 'HIPAA-compliant with enterprise-grade security.',
    footerCopyright: '© 2026 DyoLink. All rights reserved.',
    termsAndConditions: 'Terms & Conditions',
  },
  accountMenu: {
    noActiveSubscription: 'No active subscription — review Subscriptions',
    trialEnded: 'Trial ended — review Subscriptions',
    trialEndingSoon: 'Trial ending soon — review Subscriptions',
    seatsLow: 'Seats running low — review Subscriptions',
    reviewSubscriptions: 'Review Subscriptions',
  },
  validation: {
    emailInvalid: 'Please enter a valid email address',
    passwordRequired: 'Password is required',
    nameMinLength: 'Name must be at least 2 characters',
    passwordMinLength: 'Password must be at least 8 characters',
    passwordUppercase: 'Password must contain at least one uppercase letter',
    passwordNumber: 'Password must contain at least one number',
    organizationNameMinLength: 'Organization name must be at least 2 characters',
    organizationEmailInvalid: 'Please enter a valid organization email',
    organizationTypeRequired: 'Please select organization type',
    passwordsDoNotMatch: "Passwords don't match",
  },
  today: {
    welcomeBack: 'Welcome back!!',
    noSubscriptionNotice: 'This organization does not have an active subscription yet.',
    choosePlanLink: 'Choose a plan',
    noSubscriptionCta: 'to start the purchase process.',
    cardTodaysAppointments: "Today's Appointments",
    cardActivePatients: 'Active Patients',
    cardNewLabCase: 'New Lab Case',
    cardTodayInvoices: 'Today invoices',
  },
  staff: {
    redirecting: 'Redirecting…',
    title: 'Staff Management',
    subtitle: 'Invite teammates, set tab access, and stay within your plan seat limit.',
    inviteMember: 'Invite member',
    seatsLabel: 'Seats:',
    unlimitedPlan: '(unlimited plan)',
    seatLimitReached: 'Plan seat limit reached for this organization.',
    noActivePlan:
      'No active plan selected for this organization. Choose a subscription plan to invite members.',
    invitedPending:
      'Invitation is pending until they open the link, set a password, and log in.',
    invitedAccepted: 'Invitation was accepted immediately.',
    inviteLinkHeading: 'Invite link',
    shareLinkHint:
      'Share this link manually via SMS or email. A new link is generated if the previous one expired or was lost.',
    loadingTeam: 'Loading team…',
    tableName: 'Name',
    tableEmail: 'Email',
    tableRole: 'Role',
    tableStatus: 'Status',
    tableAccess: 'Access',
    tableAction: 'Action',
    roleOwner: 'Owner',
    roleStaff: 'Staff',
    statusActive: 'Active',
    statusPending: 'Pending',
    statusDisabled: 'Disabled',
    statusExpired: 'Expired',
    allFeatures: 'All features',
    inviteModalTitle: 'Invite team member',
    stepOf: 'Step {step} of 2',
    permissionView: 'View',
    permissionEdit: 'Edit',
    labelEmail: 'Email',
    labelDisplayName: 'Display name',
    tabAccess: 'Tab access',
    sendInvite: 'Send invite',
    skipForNow: 'Skip for now',
    enableModalTitle: 'Enable team member',
    enableConfirm: 'Enable {name} ({email})?',
    enableBullet1: 'They can sign in to this organization again with their existing account.',
    enableBullet2: 'No new invitation is sent and no data was removed while they were disabled.',
    enableBullet3: 'Enabling uses one seat on your plan.',
    noSeatsAvailable:
      'No seats are available. Disable another member or upgrade your plan before enabling this person.',
    enableMemberButton: 'Enable member',
    disableModalTitle: 'Disable team member',
    disableConfirm: 'Disable {name} ({email})?',
    disableBullet1: 'They will not be able to sign in to this organization.',
    disableBullet2: 'No data will be removed.',
    disableBullet3: 'Disabling frees one seat on your plan so you can invite someone else.',
    disableMemberButton: 'Disable member',
    editModalTitle: 'Edit member',
    loadingWorkingHours: 'Loading working hours…',
    errorLoadStaff: 'Failed to load staff.',
    errorCopyInvite: 'Could not copy invitation link.',
    errorSendInvite: 'Failed to send invitation.',
    errorLoadWorkingHours: 'Failed to load working hours.',
    successMemberUpdated: 'Member updated.',
    errorUpdateMember: 'Failed to update member.',
    errorDeleteNotImplemented: 'Delete is not implemented yet.',
    successMemberDisabled: '{name} was disabled. A seat is now available.',
    errorDisableMember: 'Failed to disable member.',
    successMemberEnabled: '{name} was enabled and can sign in again.',
    errorEnableMember: 'Failed to enable member.',
    successInvited: '{name} ({email}) was invited.',
    copyInviteLink: 'Copy invitation link',
    copyInviteLinkTitle: 'Copy invitation link (generates a new link if needed)',
    enableMemberAria: 'Enable member',
    enableMemberTitle: 'Enable member (uses a seat)',
    disableMemberAria: 'Disable member',
    disableMemberTitle: 'Disable member (frees a seat)',
    editMemberAria: 'Edit member',
    deleteMemberAria: 'Delete member',
    deleteMemberTitle: 'Delete member (not implemented)',
    features: {
      featureToday: 'Today',
      featureStaff: 'Staff',
      featureOrganizations: 'Organizations',
      featureClinics: 'Clinics',
      featureLabs: 'Labs',
      featurePatients: 'Patients',
      featureAppointment: 'Appointment',
      featureTreatment: 'Treatment',
      featureBilling: 'Billing',
      featureReports: 'Reports',
      noTabAccess: 'No tab access',
      readOnlySuffix: '(Read only)',
    },
    workingHours: {
      recommendedTitle: 'Working hours recommended',
      recommendedBody:
        'Staff with treatment edit access appear as provider columns in Appointments. Set their weekly hours so the schedule grid shows the right bookable times.',
      intro:
        'Set weekly working hours for this provider. The appointments grid uses these hours to show bookable time slots.',
      workingDay: 'Working day',
      start: 'Start',
      end: 'End',
      removeShift: 'Remove shift',
      addShift: 'Add shift',
      autoRepeatWeekly: 'Repeat these hours at the start of each week (copy forward on Monday)',
      weekdayMon: 'Mon',
      weekdayTue: 'Tue',
      weekdayWed: 'Wed',
      weekdayThu: 'Thu',
      weekdayFri: 'Fri',
      weekdaySat: 'Sat',
      weekdaySun: 'Sun',
      validationNeedsShift: '{day} needs at least one shift or should be marked off.',
      validationEndAfterStart: '{day} shift end time must be after start time.',
      validationOverlap: '{day} shifts cannot overlap.',
    },
  },
  patients: {
    title: 'Patients',
    newPatient: 'New Patient',
    errorLoadPatients: 'Failed to load patients.',
    successPatientSaved: 'Patient {firstName} {lastName} was saved successfully.',
    errorSavePatient: 'Failed to save patient.',
    firstName: 'First name',
    lastName: 'Last name',
    phone: 'Phone',
    savePatient: 'Save Patient',
    dialogTitle: 'New patient',
    searchPlaceholder: 'Search patients by name, phone, email',
    loadingPatients: 'Loading patients...',
    noResults: 'No patients found for this search.',
    noContact: 'No contact',
    selectPatient: 'Select a patient to view details.',
    phoneLabel: 'Phone:',
    emailLabel: 'Email:',
    statusLabel: 'Status:',
    statusActive: 'Active',
    statusInactive: 'Inactive',
    emptyValue: '-',
  },
  appointments: {
    title: 'Appointments',
    subtitle: 'Search a patient, pick a date, then click a time slot under a provider to book.',
    loadingSchedule: 'Loading schedule…',
    infoPastViewOnly: 'Past appointments are view-only.',
    infoSelectPatient: 'Select a patient before booking.',
    errorOutsideHours:
      "This appointment falls outside the provider's current working hours and cannot be edited.",
    successUpdated: 'Appointment updated.',
    successSaved: 'Appointment saved.',
    errorUpdate: 'Could not update appointment.',
    errorSave: 'Could not save appointment.',
    confirmRemove: 'Remove this appointment?',
    successRemoved: 'Appointment removed.',
    errorDelete: 'Could not delete appointment.',
    errorLoadSchedule: 'Failed to load schedule.',
    successPatientSaved: 'Patient {firstName} {lastName} was saved.',
    searchPlaceholder: 'Search existing patients',
    searching: 'Searching…',
    searchHint: 'Type to search patients by name, phone, or email.',
    noPermissionAdd: 'You do not have permission to add patients.',
    editTitle: 'Edit appointment',
    newTitle: 'New appointment',
    providerLabel: 'Provider:',
    patientLabel: 'Patient',
    startLabel: 'Start',
    endLabel: 'End',
    purposeLabel: 'Purpose',
    errorSelectPatient: 'Select a patient first.',
    errorEndAfterStart: 'End time must be after start time.',
    errorPastSchedule: 'Cannot schedule in the past.',
    errorPastViewOnly: 'Past appointments are view-only.',
    errorMissingDetails: 'Missing appointment details.',
    noProviders:
      'No providers available. Add staff with treatment edit access to see columns here.',
    noWorkingHours:
      'No working hours are configured for this day. Set provider working hours in Staff management.',
    noHoursSet: 'No hours set',
    offToday: 'Off today',
    slotOffToday: 'Provider is off today',
    slotHoursNotConfigured: 'Working hours not configured',
    slotOutsideHours: 'Outside working hours',
    slotCannotCreate: 'You cannot create appointments',
    slotBookAt: 'Book {time}',
    outsideHoursBlocked: 'Outside working hours — editing blocked',
    overlappingChoose: '{count} overlapping — click to choose',
    overlapping: '{count} overlapping',
    legend: 'Legend',
    overlappingTitle: 'Overlapping appointments ({count})',
    purposeConsultation: 'Consultation',
    purposeFilling: 'Filling',
    purposeEndo: 'Endo',
    purposeVisit: 'Visit',
    purposeHygiene: 'Hygiene',
  },
  treatment: {
    loading: 'Loading…',
    noPermissionTitle: 'Treatment workspace',
    noPermissionBody: 'You do not have permission to view the Treatment tab for this organization.',
    title: 'Treatment',
    subtitleEdit:
      'Document cases for your appointments, save drafts, and send work to linked organizations.',
    subtitleReadOnly:
      'View-only access — you can review appointments and treatment history but cannot edit.',
    pastDayNotice:
      'Past days are view-only. You can review appointments and history, but treatment cases cannot be added or changed.',
    selectedPatient: 'Selected patient',
    purposeLabel: 'Purpose:',
    loadingAppointments: 'Loading appointments…',
    selectDayWithAppointment: 'Select a day with at least one appointment.',
    confirmDiscard: 'You have unsaved changes. Discard them and continue?',
    successDraftSaved: 'Treatment draft saved.',
    errorChooseOrg: 'Choose at least one active organization to send this case.',
    successCaseSent: 'Case sent to selected organizations.',
    successFilesUploaded: '{count} file(s) uploaded successfully.',
    errorLoadAppointments: 'Failed to load appointments.',
    errorLoadOrgs: 'Failed to load linked organizations.',
    errorLoadHistory: 'Failed to load treatment history.',
    errorLoadDraft: 'Failed to load treatment draft.',
    errorUpload: 'Failed to upload attachments.',
    errorSaveDraft: 'Failed to save treatment draft.',
    errorSendCase: 'Failed to send case.',
    errorCaseMustSave: 'Case must be saved before sending.',
    draftTitle: 'Draft · {patientName}',
    hiddenMessage: 'Appointments are hidden.',
    showAppointments: 'Show appointments',
    appointmentsTitle: 'My appointments',
    hideAppointments: 'Hide appointments',
    emptyDay: 'No appointments assigned to you on this day.',
    casesTitle: 'Treatment cases',
    casesSubtitle: 'Each case has its own teeth, notes, attachments, and destinations for send.',
    addCase: 'Add case',
    caseLabel: 'Case {n}',
    comments: 'Comments',
    commentsPlaceholder: 'Write clinical notes for this case…',
    treatmentType: 'Treatment type',
    typeConsultation: 'consultation',
    typeFilling: 'filling',
    typeEndo: 'endo',
    typeVisit: 'visit',
    typeHygiene: 'hygiene',
    attachments: 'Attachments',
    attachFiles: 'Attach files for this treatment case',
    chooseFiles: 'Choose files',
    sendToOrgs: 'Send this case to linked organizations',
    searchOrgsPlaceholder: 'Search active organizations...',
    recent: 'Recent:',
    noOrgMatch: 'No active organization matches your search.',
    sendThisCase: 'Send this case',
    saveDraft: 'Save treatment draft',
    unsavedChanges: 'Unsaved changes',
    draftSaved: 'Draft saved',
    sendSavesFirst: 'Sending is per case and saves first automatically.',
    historyTitle: 'Previous treatments',
    historySubtitle: 'Completed treatments for this patient. Each case is listed separately.',
    loadingHistory: 'Loading history…',
    historyEmpty: 'No prior treatments for this patient.',
    statusLabel: 'Status:',
    historyCaseLabel: 'Case {n} · {type}',
    teethLabel: 'Teeth:',
    teethNone: 'None selected',
    reviewDetails: 'Review details',
    previewTitle: 'Treatment preview',
    previewDraft: 'Preview current draft',
    selectAppointment: 'Select an appointment to preview its draft.',
    caseCount: '{n} case(s)',
    attachmentCount: '{n} attachment(s)',
    caseSummary: 'Case {n}: {type}',
    teethPrefix: '· Teeth',
    moreCases: '+ {n} more case(s)',
    previewDialogTitle: 'Treatment preview',
    previewDialogSubtitle: 'Review cases, attachments, and send destinations.',
    noCases: 'No cases in this treatment.',
    typeLabel: 'Type:',
    commentsLabel: 'Comments:',
    commentsEmpty: 'Comments: —',
    attachFilesShort: 'Attach files',
    sendCase: 'Send this case',
    sendToLinkedOrgs: 'Send to linked organizations',
    noActiveOrgs: 'No active linked organizations.',
    confirmSend: 'Confirm send',
    toothChartTitle: 'FDI tooth chart',
    toothChartHint: 'Tap teeth to multi-select. Applies to the active case.',
    selectedLabel: 'Selected:',
    selectedEmpty: '—',
    upperArch: 'Upper arch',
    lowerArch: 'Lower arch',
    toothAria: 'FDI tooth {fdi}',
    toothSelectedSuffix: ', selected',
    sentToAt: 'Sent to {orgName} at {datetime}',
    fallbackOrgName: 'organization',
  },
  organizations: {
    loadingOrganization: 'Loading organization...',
    subtitle:
      'Search organizations, send connection requests to existing accounts, or invitation links when they are not on DyoLink yet.',
    invitationHistory: 'Invitation History',
    searchPlaceholder: 'Search {counterpart} by name, email, or phone...',
    backToList: 'Back to list',
    tableOrganization: 'Organization',
    tableOwnerEmail: 'Owner email',
    tableDate: 'Date',
    tableStatus: 'Status',
    tableAction: 'Action',
    emptyConnections: 'No connections yet. Search to send a connection request or an invitation link.',
    statusInvitationPending: 'Invitation pending',
    statusConnectionPending: 'Connection request pending',
    statusConnected: 'Connected',
    statusDeclined: 'Connection request declined',
    statusFound: 'Found',
    statusToday: 'Today',
    acceptRequest: 'Accept connection request',
    declineRequest: 'Decline connection request',
    removeConnection: 'Remove connection',
    sendRequest: 'Send connection request',
    noDirectoryResults: 'No organization found in directory search.',
    hideInvitationFields: 'Hide invitation fields',
    sendInvitationLink: 'Send invitation link',
    counterpartNameLabel: '{counterpart} name',
    ownerEmailLabel: 'Owner email',
    sendInvitation: 'Send invitation',
    successConnectionSent: '{counterpart} connection request sent.',
    successInviteCreated: 'Invitation link created for {email}',
    successLinkCopied: 'Invitation link copied to clipboard.',
    successAccepted: 'Connection request accepted.',
    successDeclined: 'Connection request declined.',
    successRemoved: 'Connection removed.',
    historyTitle: 'Invitation History',
    loadingHistory: 'Loading invitation history...',
    historyEmpty: 'No invitations yet.',
    tableInvitationLink: 'Invitation link',
    statusPending: 'Invitation pending',
    statusAccepted: 'Invitation accepted',
    statusRejected: 'Invitation rejected',
    statusExpired: 'Invitation expired',
    copyInvitationLink: 'Copy invitation link',
    copyInvitationLinkTitle: 'Copy invitation link (generates a new link if needed)',
    selectorTitle: 'Organizations',
    selectorSubtitleWithCreate: 'Select an organization to continue, or create a new one.',
    selectorSubtitleSelectOnly: 'Select an organization to continue.',
    createOrganization: 'Create Organization',
    createAndContinue: 'Create and Continue',
    emptyCanCreate: 'No organizations found. Create your first one to continue.',
    emptyAskOwner: 'No organizations found. Ask an organization owner to invite you.',
    continueArrow: 'Continue →',
    planLabel: 'Plan: {name} • {maxUsers} users',
  },
  settings: {
    accountTitle: 'Account',
    accountSubtitle: 'Profile and security settings for your login.',
    accountPlaceholder:
      'Password change and profile editing will be wired here next (e.g. invite flow, reset password).',
    subscriptionsTitle: 'Subscriptions',
    subscriptionsSubtitle:
      'Your DyoLink workspace plan and seats for {orgName}. Clinic and lab income tracking stays under the sidebar Billing tab.',
    noSubscriptionNotice:
      'This organization has no active subscription. Select a plan below to start the purchase process.',
    currentPlan: 'Current plan',
    planPrice: 'Plan price',
    seatsUsed: 'Seats used',
    seatsRemaining: 'Seats remaining',
    daysRemaining: 'Days remaining',
    unlimited: 'Unlimited',
    unlimitedSeats: 'Unlimited seats',
    seatsCount: '{n} seats',
    pricePerMonth: '${price} / month',
    noActiveSubscription: 'No active subscription for this organization.',
    trialEnded: 'Trial period has ended. Choose a plan when checkout is available.',
    trialEndsIn: 'Trial ends in {days} day(s).',
    seatsLow: 'Seat usage is high for this organization.',
    choosePlanIntro:
      'Choose a plan to continue. Purchase integration is not active yet, so this currently prepares the selection step only.',
    planSolo: 'Solo',
    planSmall: 'Small',
    planMedium: 'Medium',
    planLarge: 'Large',
    planEnterprise: 'Enterprise',
    startPurchase: 'Start purchase process',
    purchaseNotice:
      'Purchase flow will be enabled soon. {plan} is selected and ready for checkout setup.',
  },
  schedule: {
    defaultLabel: 'Schedule date',
    previousDay: 'Previous day',
    nextDay: 'Next day',
    chooseDate: 'Choose schedule date',
    year: 'Year',
    month: 'Month',
    day: 'Day',
    monthJanuary: 'January',
    monthFebruary: 'February',
    monthMarch: 'March',
    monthApril: 'April',
    monthMay: 'May',
    monthJune: 'June',
    monthJuly: 'July',
    monthAugust: 'August',
    monthSeptember: 'September',
    monthOctober: 'October',
    monthNovember: 'November',
    monthDecember: 'December',
  },
};

function deepMerge(base, overlay) {
  const result = { ...base };
  for (const key of Object.keys(base)) {
    const baseVal = base[key];
    const overlayVal = overlay?.[key];
    if (baseVal && typeof baseVal === 'object' && !Array.isArray(baseVal)) {
      result[key] = deepMerge(baseVal, overlayVal ?? {});
    } else if (overlayVal !== undefined) {
      result[key] = overlayVal;
    }
  }
  return result;
}

function writeJson(file, data) {
  fs.writeFileSync(file, `${JSON.stringify(data, null, 2)}\n`, 'utf8');
}

writeJson(path.join(messagesDir, 'en.json'), en);

for (const locale of ['fa', 'nl']) {
  const file = path.join(messagesDir, `${locale}.json`);
  const existing = fs.existsSync(file) ? JSON.parse(fs.readFileSync(file, 'utf8')) : {};
  writeJson(file, deepMerge(en, existing));
}

console.log('Messages built: en.json updated; fa.json and nl.json merged with existing translations.');