const Joi = require('joi');
const controller = require('../controllers/form.controller');
const grantController = require('../controllers/formGrant.controller');
const { requireFormPermissionPre, requirePermissionPre } = require('../services/acl.service');
const { FORM_TYPES, FIELD_TYPES, FORM_FIELD_MAPS_TO } = require('../config/constants');

/** stripUnknown: Mongo subdocs include _id; duplicates must not fail validation. */
const fieldSchema = Joi.object({
  label: Joi.string(),
  name: Joi.string().allow('', null),
  type: Joi.string().valid(...FIELD_TYPES),
  required: Joi.boolean(),
  options: Joi.array().items(Joi.string()),
  allowOther: Joi.boolean(),
  otherLabel: Joi.string().allow('', null),
  placeholder: Joi.string().allow('', null),
  remarks: Joi.string().allow('', null),
  uiType: Joi.string().allow('', null),
  mapsTo: Joi.string().valid(...FORM_FIELD_MAPS_TO).allow('', null),
  customMapsKey: Joi.string().allow('', null),
  isFixed: Joi.boolean(),
  convertToTag: Joi.boolean(),
}).options({ stripUnknown: true });

const eventHeaderSchema = Joi.object({
  showLogo: Joi.boolean(),
  showTitle: Joi.boolean(),
  showDateRange: Joi.boolean(),
  showEventType: Joi.boolean(),
  showLocationType: Joi.boolean(),
  showVenue: Joi.boolean(),
}).options({ stripUnknown: true });

const settingsSchema = Joi.object({
  isActive: Joi.boolean(),
  allowMultiple: Joi.boolean(),
  submissionLimit: Joi.number(),
  thankYouMessage: Joi.string().allow('', null),
  responseDeadline: Joi.alternatives().try(Joi.date(), Joi.string().allow('', null), Joi.valid(null)),
  showThankYou: Joi.boolean(),
  collectEmail: Joi.boolean(),
  allowAnonymous: Joi.boolean(),
  paymentEnabled: Joi.boolean(),
  paymentAmount: Joi.alternatives().try(Joi.string(), Joi.number()).allow('', null),
  sendConfirmationEmail: Joi.boolean(),
  confirmationEmailTemplateId: Joi.string().hex().length(24).allow(null).empty(''),
  onSubmitAddTags: Joi.array().items(Joi.string()),
  /** Empty string must become null — mongoose ObjectId rejects "". */
  onSubmitParticipantListId: Joi.string().hex().length(24).allow(null).empty(''),
  allowDuplicateEmail: Joi.boolean(),
  allowDuplicatePhone: Joi.boolean(),
  formClosedMessage: Joi.string().allow('', null),
  submitErrorMessage: Joi.string().allow('', null),
  captchaFailedMessage: Joi.string().allow('', null),
  registrationClosedMessage: Joi.string().allow('', null),
  registrationDeadlineMessage: Joi.string().allow('', null),
  registrationFullMessage: Joi.string().allow('', null),
  duplicateEmailMessage: Joi.string().allow('', null),
  duplicatePhoneMessage: Joi.string().allow('', null),
  eventHeader: eventHeaderSchema,
}).options({ stripUnknown: true });

const formPayload = Joi.object({
  name: Joi.string().required(),
  type: Joi.string().valid(...FORM_TYPES).required(),
  description: Joi.string().allow('', null),
  fields: Joi.array().items(fieldSchema),
  settings: settingsSchema,
  defaultVisibility: Joi.string().valid('private', 'org'),
}).options({ stripUnknown: true });

const formUpdatePayload = formPayload.keys({
  event: Joi.string().hex().length(24).required(),
});

/** tenantOrganization: super_admin may set explicitly; others get it from JWT in the controller. */
const formOrgCreatePayload = Joi.object({
  name: Joi.string().required(),
  type: Joi.string().valid(...FORM_TYPES).required(),
  description: Joi.string().allow('', null),
  fields: Joi.array().items(fieldSchema),
  settings: settingsSchema,
  event: Joi.string().hex().length(24).required(),
  defaultVisibility: Joi.string().valid('private', 'org'),
  tenantOrganization: Joi.alternatives().try(
    Joi.string().hex().length(24),
    Joi.string().allow(null, ''),
    Joi.valid(null)
  ),
}).options({ stripUnknown: true });

const submitPayload = Joi.object({
  participantId: Joi.string(),
  data: Joi.object().pattern(Joi.string(), Joi.any()),
  captchaToken: Joi.string().allow('', null),
  captchaAnswer: Joi.alternatives().try(Joi.string(), Joi.number()).allow('', null),
  _gotcha: Joi.string().allow('', null),
});

const replyPayload = Joi.object({
  submissionId: Joi.string().required(),
  to: Joi.string().email().required(),
  subject: Joi.string().allow('', null),
  body: Joi.string().allow('', null),
});

const grantPayload = Joi.object({
  subjectType: Joi.string().valid('user', 'role').required(),
  subjectId: Joi.string().hex().length(24).required(),
  actions: Joi.array().items(Joi.string().valid('read', 'write', 'delete')),
});

module.exports = [
  {
    method: 'GET',
    path: '/api/forms',
    options: { pre: [{ method: requirePermissionPre('forms', 'read') }], handler: controller.listByOrganization },
  },
  {
    method: 'POST',
    path: '/api/forms',
    options: { validate: { payload: formOrgCreatePayload }, pre: [{ method: requirePermissionPre('forms', 'write') }], handler: controller.createByOrganization },
  },
  {
    method: 'GET',
    path: '/api/events/{eventId}/forms',
    options: { pre: [{ method: requirePermissionPre('forms', 'read') }], handler: controller.list },
  },
  {
    method: 'POST',
    path: '/api/events/{eventId}/forms',
    options: { validate: { payload: formPayload }, pre: [{ method: requirePermissionPre('forms', 'write') }], handler: controller.create },
  },
  {
    method: 'GET',
    path: '/api/forms/{id}',
    options: { pre: [{ method: requireFormPermissionPre('read') }], handler: controller.get },
  },
  {
    method: 'PUT',
    path: '/api/forms/{id}',
    options: { validate: { payload: formUpdatePayload }, pre: [{ method: requireFormPermissionPre('write') }], handler: controller.update },
  },
  {
    method: 'DELETE',
    path: '/api/forms/{id}',
    options: { pre: [{ method: requireFormPermissionPre('delete') }], handler: controller.remove },
  },
  {
    method: 'POST',
    path: '/api/forms/{formId}/submit',
    options: { auth: false, validate: { payload: submitPayload }, handler: controller.submit },
  },
  {
    method: 'GET',
    path: '/api/public/forms/{formId}',
    options: { auth: false, handler: controller.getPublicForm },
  },
  {
    method: 'GET',
    path: '/api/forms/{formId}/submissions',
    options: { pre: [{ method: requireFormPermissionPre('read', { idParam: 'formId' }) }], handler: controller.listSubmissions },
  },
  {
    method: 'POST',
    path: '/api/forms/{formId}/submissions/reply',
    options: {
      validate: { payload: replyPayload },
      pre: [{ method: requireFormPermissionPre('read', { idParam: 'formId' }) }],
      handler: controller.replyToSubmission,
    },
  },
  {
    method: 'GET',
    path: '/api/forms/{formId}/grants',
    options: { pre: [{ method: requireFormPermissionPre('read', { idParam: 'formId' }) }], handler: grantController.listGrants },
  },
  {
    method: 'POST',
    path: '/api/forms/{formId}/grants',
    options: {
      validate: { payload: grantPayload },
      pre: [{ method: requireFormPermissionPre('write', { idParam: 'formId' }) }],
      handler: grantController.createGrant,
    },
  },
  {
    method: 'DELETE',
    path: '/api/forms/{formId}/grants/{grantId}',
    options: { pre: [{ method: requireFormPermissionPre('write', { idParam: 'formId' }) }], handler: grantController.removeGrant },
  },
  {
    method: 'PUT',
    path: '/api/forms/{formId}/visibility',
    options: {
      validate: { payload: Joi.object({ defaultVisibility: Joi.string().valid('private', 'org').required() }) },
      pre: [{ method: requireFormPermissionPre('write', { idParam: 'formId' }) }],
      handler: grantController.updateFormVisibility,
    },
  },
];