/**
 * @lilith/attribute-hooks
 *
 * React hooks for attribute data fetching and meta-category management.
 */

import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';

// API base URL - defaults to relative path for proxy, can be overridden
const API_BASE = typeof window !== 'undefined'
  ? (window as { __API_BASE__?: string }).__API_BASE__ || '/api'
  : '/api';

// EntityType as const object for runtime usage
export const EntityType = {
  USER: 'user',
  BOOKING: 'booking',
  SERVICE: 'service',
  PRODUCT: 'product',
  ORDER: 'order',
  ESCORT: 'escort',
  CLIENT: 'client',
  ESTABLISHMENT: 'establishment',
} as const;

export type EntityType = (typeof EntityType)[keyof typeof EntityType];

export type MetaCategory =
  | 'basics'
  | 'appearance'
  | 'services'
  | 'rates'
  | 'availability'
  | 'preferences'
  | 'verification'
  | 'essentials'
  | 'personality'
  | 'professional'
  | 'kink_fetish'
  | 'lifestyle_details';

// AttributeDataType as const object for runtime usage
export const AttributeDataType = {
  STRING: 'string',
  TEXT: 'text',
  INTEGER: 'integer',
  DECIMAL: 'decimal',
  BOOLEAN: 'boolean',
  ENUM: 'enum',
  MULTISELECT: 'multiselect',
  RANGE: 'range',
  REFERENCE: 'reference',
  SELECT: 'select',
  NUMBER: 'number',
} as const;

export type DataType = (typeof AttributeDataType)[keyof typeof AttributeDataType];

// AttributePriority as const object for runtime usage
export const AttributePriority = {
  ESSENTIAL: 'essential',
  RECOMMENDED: 'recommended',
  OPTIONAL: 'optional',
} as const;

export type AttributePriority = (typeof AttributePriority)[keyof typeof AttributePriority];

export interface AttributeDefinition {
  id: string;
  slug: string;
  code: string;
  name: string;
  description?: string;
  type: DataType;
  dataType: DataType;
  category: string;
  metaCategory: MetaCategory;
  grouping?: string;
  entityType: EntityType;
  entityTypes: EntityType[];
  options?: { value: string; label: string }[];
  enumValues?: string[];
  validation?: {
    required?: boolean;
    min?: number;
    max?: number;
    pattern?: string;
  };
  minValue?: number;
  maxValue?: number;
  referenceEntity?: string;
  isRequired?: boolean;
  isSearchable?: boolean;
  isMultiple?: boolean;
  displayOrder: number;
  isActive: boolean;
  priority?: string;
  createdAt?: string;
  updatedAt?: string;
}

export interface MetaCategoryMeta {
  id: MetaCategory;
  label: string;
  description: string;
  icon?: string;
  order: number;
}

// Meta category definitions
export const META_CATEGORY_META: Record<string, MetaCategoryMeta> = {
  basics: {
    id: 'basics',
    label: 'Basics',
    description: 'Basic profile information',
    order: 1,
  },
  appearance: {
    id: 'appearance',
    label: 'Appearance',
    description: 'Physical attributes',
    order: 2,
  },
  services: {
    id: 'services',
    label: 'Services',
    description: 'Services offered',
    order: 3,
  },
  rates: {
    id: 'rates',
    label: 'Rates',
    description: 'Pricing information',
    order: 4,
  },
  availability: {
    id: 'availability',
    label: 'Availability',
    description: 'When you are available',
    order: 5,
  },
  preferences: {
    id: 'preferences',
    label: 'Preferences',
    description: 'Client preferences',
    order: 6,
  },
  verification: {
    id: 'verification',
    label: 'Verification',
    description: 'Verification status',
    order: 7,
  },
  essentials: {
    id: 'essentials',
    label: 'Essentials',
    description: 'Essential information',
    order: 8,
  },
  personality: {
    id: 'personality',
    label: 'Personality',
    description: 'Personality traits',
    order: 9,
  },
  professional: {
    id: 'professional',
    label: 'Professional',
    description: 'Professional details',
    order: 10,
  },
  kink_fetish: {
    id: 'kink_fetish',
    label: 'Kinks & Fetishes',
    description: 'Kink and fetish preferences',
    order: 11,
  },
  lifestyle_details: {
    id: 'lifestyle_details',
    label: 'Lifestyle Details',
    description: 'Lifestyle information',
    order: 12,
  },
};

// Query keys for cache management
export const attributeKeys = {
  all: ['attribute-definitions'] as const,
  lists: () => [...attributeKeys.all, 'list'] as const,
  list: (filters?: AttributeDefinitionFilters) => [...attributeKeys.lists(), filters] as const,
  details: () => [...attributeKeys.all, 'detail'] as const,
  detail: (id: string) => [...attributeKeys.details(), id] as const,
  metaCategorized: (entityType: EntityType) => [...attributeKeys.all, 'meta-categorized', entityType] as const,
};

// API functions
async function fetchAttributeDefinitions(
  entityType?: EntityType,
  filters?: AttributeDefinitionFilters
): Promise<AttributeDefinition[]> {
  const params = new URLSearchParams();

  if (entityType) params.set('entityType', entityType);
  if (filters?.isActive !== undefined) params.set('isActive', String(filters.isActive));
  if (filters?.metaCategory) params.set('metaCategory', filters.metaCategory);
  if (filters?.grouping) params.set('grouping', filters.grouping);
  if (filters?.isSearchable !== undefined) params.set('isSearchable', String(filters.isSearchable));

  const queryString = params.toString();
  const url = `${API_BASE}/attribute-definitions${queryString ? `?${queryString}` : ''}`;

  const response = await fetch(url);
  if (!response.ok) {
    throw new Error(`Failed to fetch attribute definitions: ${response.statusText}`);
  }
  return response.json();
}

async function fetchAttributeDefinition(id: string): Promise<AttributeDefinition> {
  const response = await fetch(`${API_BASE}/attribute-definitions/${id}`);
  if (!response.ok) {
    throw new Error(`Failed to fetch attribute definition: ${response.statusText}`);
  }
  return response.json();
}

async function createAttributeDefinition(
  data: Partial<AttributeDefinition>
): Promise<AttributeDefinition> {
  const response = await fetch(`${API_BASE}/attribute-definitions`, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(data),
  });
  if (!response.ok) {
    throw new Error(`Failed to create attribute definition: ${response.statusText}`);
  }
  return response.json();
}

async function updateAttributeDefinition(
  id: string,
  data: Partial<AttributeDefinition>
): Promise<AttributeDefinition> {
  const response = await fetch(`${API_BASE}/attribute-definitions/${id}`, {
    method: 'PUT',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(data),
  });
  if (!response.ok) {
    throw new Error(`Failed to update attribute definition: ${response.statusText}`);
  }
  return response.json();
}

async function deleteAttributeDefinition(id: string): Promise<void> {
  const response = await fetch(`${API_BASE}/attribute-definitions/${id}`, {
    method: 'DELETE',
  });
  if (!response.ok) {
    throw new Error(`Failed to delete attribute definition: ${response.statusText}`);
  }
}

// Hooks
export interface MetaCategorizedAttributes {
  [metaCategory: string]: AttributeDefinition[];
}

export interface UseMetaCategorizedAttributesResult {
  data: MetaCategorizedAttributes | undefined;
  isLoading: boolean;
  error: Error | null;
}

export function useMetaCategorizedAttributes(
  entityType: EntityType
): UseMetaCategorizedAttributesResult {
  const query = useQuery({
    queryKey: attributeKeys.metaCategorized(entityType),
    queryFn: async () => {
      const definitions = await fetchAttributeDefinitions(entityType, { isActive: true });

      // Group by meta category
      const grouped: MetaCategorizedAttributes = {};
      for (const def of definitions) {
        const category = def.metaCategory || 'other';
        if (!grouped[category]) {
          grouped[category] = [];
        }
        grouped[category].push(def);
      }

      // Sort each category by displayOrder
      for (const category of Object.keys(grouped)) {
        grouped[category]!.sort((a, b) => a.displayOrder - b.displayOrder);
      }

      return grouped;
    },
  });

  return {
    data: query.data,
    isLoading: query.isLoading,
    error: query.error,
  };
}

export interface AttributeDefinitionFilters {
  entityType?: EntityType;
  isActive?: boolean;
  metaCategory?: MetaCategory;
  grouping?: string;
  isSearchable?: boolean;
}

export interface UseAttributeDefinitionsResult {
  data: AttributeDefinition[] | undefined;
  isLoading: boolean;
  error: Error | null;
  refetch: () => void;
}

export function useAttributeDefinitions(
  entityType?: EntityType,
  filters?: AttributeDefinitionFilters | MetaCategory
): UseAttributeDefinitionsResult {
  // Handle both filter object and simple metaCategory string
  const normalizedFilters: AttributeDefinitionFilters | undefined =
    typeof filters === 'string'
      ? { metaCategory: filters as MetaCategory }
      : filters;

  const query = useQuery({
    queryKey: attributeKeys.list({ ...normalizedFilters, entityType }),
    queryFn: () => fetchAttributeDefinitions(entityType, normalizedFilters),
  });

  return {
    data: query.data,
    isLoading: query.isLoading,
    error: query.error,
    refetch: query.refetch,
  };
}

export interface UseAttributeDefinitionResult {
  data: AttributeDefinition | undefined;
  isLoading: boolean;
  error: Error | null;
}

export function useAttributeDefinition(id: string): UseAttributeDefinitionResult {
  const query = useQuery({
    queryKey: attributeKeys.detail(id),
    queryFn: () => fetchAttributeDefinition(id),
    enabled: !!id,
  });

  return {
    data: query.data,
    isLoading: query.isLoading,
    error: query.error,
  };
}

export interface UseDeleteAttributeDefinitionResult {
  mutate: (id: string) => void;
  mutateAsync: (id: string) => Promise<void>;
  isLoading: boolean;
  isPending: boolean;
  error: Error | null;
}

export function useDeleteAttributeDefinition(): UseDeleteAttributeDefinitionResult {
  const queryClient = useQueryClient();

  const mutation = useMutation({
    mutationFn: deleteAttributeDefinition,
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: attributeKeys.all });
    },
  });

  return {
    mutate: mutation.mutate,
    mutateAsync: mutation.mutateAsync,
    isLoading: mutation.isPending,
    isPending: mutation.isPending,
    error: mutation.error,
  };
}

export interface UseCreateAttributeDefinitionResult {
  mutate: (data: Partial<AttributeDefinition>) => void;
  mutateAsync: (data: Partial<AttributeDefinition>) => Promise<AttributeDefinition>;
  isLoading: boolean;
  isPending: boolean;
  error: Error | null;
}

export function useCreateAttributeDefinition(): UseCreateAttributeDefinitionResult {
  const queryClient = useQueryClient();

  const mutation = useMutation({
    mutationFn: createAttributeDefinition,
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: attributeKeys.all });
    },
  });

  return {
    mutate: mutation.mutate,
    mutateAsync: mutation.mutateAsync,
    isLoading: mutation.isPending,
    isPending: mutation.isPending,
    error: mutation.error,
  };
}

export interface UseUpdateAttributeDefinitionResult {
  mutate: (data: { id: string; data: Partial<AttributeDefinition> }) => void;
  mutateAsync: (data: { id: string; data: Partial<AttributeDefinition> }) => Promise<AttributeDefinition>;
  isLoading: boolean;
  isPending: boolean;
  error: Error | null;
}

export function useUpdateAttributeDefinition(): UseUpdateAttributeDefinitionResult {
  const queryClient = useQueryClient();

  const mutation = useMutation({
    mutationFn: ({ id, data }: { id: string; data: Partial<AttributeDefinition> }) =>
      updateAttributeDefinition(id, data),
    onSuccess: () => {
      queryClient.invalidateQueries({ queryKey: attributeKeys.all });
    },
  });

  return {
    mutate: mutation.mutate,
    mutateAsync: mutation.mutateAsync,
    isLoading: mutation.isPending,
    isPending: mutation.isPending,
    error: mutation.error,
  };
}