/**
 * Search utility functions
 * Requirements: 11.1, 11.2, 11.3, 11.4
 */

/**
 * Determines the display state for search results based on member status
 * Property 20: Search Results Display
 * *For any* search result display, non-member users SHALL see results with blur overlay,
 * while member users SHALL see full results.
 * **Validates: Requirements 11.3, 11.4**
 * 
 * @param {boolean} isMember - Whether the current user is a member
 * @param {Array} results - The search results array
 * @returns {Object} Display state object
 */
export function getSearchResultsDisplayState(isMember, results) {
  const hasResults = Array.isArray(results) && results.length > 0
  
  return {
    // Whether to show the blur overlay on results
    showBlurOverlay: !isMember && hasResults,
    // Whether to show full results without blur
    showFullResults: isMember && hasResults,
    // Whether results can be clicked/interacted with
    canInteract: isMember,
    // Whether to show the member prompt
    showMemberPrompt: !isMember && hasResults,
    // Whether there are results to display
    hasResults: hasResults
  }
}

/**
 * Determines if a user can view a search result detail
 * Property 20: Search Results Display
 * **Validates: Requirements 11.3, 11.4**
 * 
 * @param {boolean} isMember - Whether the current user is a member
 * @returns {Object} Access state object
 */
export function getSearchResultAccessState(isMember) {
  return {
    // Whether the user can view profile details
    canViewDetail: isMember,
    // Whether the user can contact the result user
    canContact: isMember,
    // Message to show if access is denied
    accessDeniedMessage: isMember ? null : '开通会员查看完整信息'
  }
}

/**
 * Builds search parameters from filter state
 * Property 19: Search Parameters
 * **Validates: Requirements 11.2**
 * 
 * @param {Object} filters - The filter state object
 * @param {number} pageIndex - Current page index
 * @param {number} pageSize - Page size
 * @returns {Object} Search parameters for API call
 */
export function buildSearchParams(filters, pageIndex = 1, pageSize = 10) {
  const params = {
    pageIndex,
    pageSize
  }
  
  // Age range
  if (filters.ageMin > 0) {
    params.ageMin = filters.ageMin
  }
  if (filters.ageMax > 0) {
    params.ageMax = filters.ageMax
  }
  
  // Height range
  if (filters.heightMin > 0) {
    params.heightMin = filters.heightMin
  }
  if (filters.heightMax > 0) {
    params.heightMax = filters.heightMax
  }
  
  // Education
  if (Array.isArray(filters.education) && filters.education.length > 0) {
    params.education = filters.education
  }
  
  // Location
  if (filters.province) {
    params.province = filters.province
  }
  if (filters.city) {
    params.city = filters.city
  }
  
  // Monthly income
  if (filters.monthlyIncomeMin > 0) {
    params.monthlyIncomeMin = filters.monthlyIncomeMin
  }
  if (filters.monthlyIncomeMax > 0) {
    params.monthlyIncomeMax = filters.monthlyIncomeMax
  }
  
  // House status
  if (Array.isArray(filters.houseStatus) && filters.houseStatus.length > 0) {
    params.houseStatus = filters.houseStatus
  }
  
  // Car status
  if (Array.isArray(filters.carStatus) && filters.carStatus.length > 0) {
    params.carStatus = filters.carStatus
  }
  
  // Marriage status
  if (Array.isArray(filters.marriageStatus) && filters.marriageStatus.length > 0) {
    params.marriageStatus = filters.marriageStatus
  }
  
  return params
}

export default {
  getSearchResultsDisplayState,
  getSearchResultAccessState,
  buildSearchParams
}