import { apiClient } from './api-client';
import type { ListingDetail } from './listings-api';

// ─── Enums ───────────────────────────────────────────────

// Must match the Prisma enum `ProjectDevelopmentStatus` in
// `prisma/schema.prisma` — the backend rejects any other value.
export type ProjectStatus =
  | 'PLANNING'
  | 'UNDER_CONSTRUCTION'
  | 'HANDOVER'
  | 'COMPLETED';

export type ProjectPropertyType =
  | 'APARTMENT'
  | 'VILLA'
  | 'TOWNHOUSE'
  | 'SHOPHOUSE'
  | 'LAND'
  | 'MIXED';

// ─── Interfaces ──────────────────────────────────────────

export interface ProjectMedia {
  id: string;
  url: string;
  type: 'image' | 'video' | 'master_plan' | 'document';
  order: number;
  caption: string | null;
}

export interface ProjectBlock {
  id: string;
  name: string;
  totalUnits: number;
  availableUnits: number;
  floors: number;
}

export interface ProjectAmenity {
  id: string;
  name: string;
  icon: string;
  category: string;
}

export interface ProjectPriceRange {
  propertyType: ProjectPropertyType;
  minPrice: string;
  maxPrice: string;
  pricePerM2Min: number | null;
  pricePerM2Max: number | null;
}

export interface ProjectPriceHistory {
  period: string;
  avgPricePerM2: number;
  transactionCount: number;
}

export interface NeighborhoodScore {
  category: string;
  score: number;
  label: string;
}

export interface ProjectPOI {
  id: string;
  name: string;
  type: string;
  distance: number;
  latitude: number;
  longitude: number;
}

export interface ProjectDeveloper {
  id: string;
  name: string;
  logoUrl: string | null;
  totalProjects: number;
}

export interface ProjectDocument {
  id: string;
  name: string;
  url: string;
  type: string;
  sizeBytes: number;
}

export interface ProjectSummary {
  id: string;
  slug: string;
  name: string;
  status: ProjectStatus;
  developer: ProjectDeveloper;
  city: string;
  district: string;
  address: string;
  latitude: number | null;
  longitude: number | null;
  thumbnailUrl: string | null;
  totalArea: number;
  totalUnits: number;
  propertyTypes: ProjectPropertyType[];
  minPrice: string | null;
  maxPrice: string | null;
  completionDate: string | null;
  createdAt: string;
}

export interface ProjectDetail extends ProjectSummary {
  description: string;
  media: ProjectMedia[];
  blocks: ProjectBlock[];
  amenities: ProjectAmenity[];
  priceRanges: ProjectPriceRange[];
  priceHistory: ProjectPriceHistory[];
  neighborhoodScores: NeighborhoodScore[];
  pois: ProjectPOI[];
  documents: ProjectDocument[];
  linkedListingCount: number;
  suitableFor?: string[];
  whyThisLocation?: string | null;
}

export interface PaginatedResult<T> {
  data: T[];
  total: number;
  page: number;
  limit: number;
  totalPages: number;
}

export interface CreateProjectPayload {
  name: string;
  slug: string;
  developer: string;
  developerLogo?: string;
  totalUnits: number;
  status: string;
  latitude: number;
  longitude: number;
  address: string;
  ward: string;
  district: string;
  city: string;
  description?: string;
  amenities?: Record<string, unknown>;
  masterPlanUrl?: string;
  minPrice?: string;
  maxPrice?: string;
  pricePerM2Range?: Record<string, unknown>;
  totalArea?: number;
  buildingCount?: number;
  floorCount?: number;
  unitTypes?: Record<string, unknown>;
  tags?: string[];
  suitableFor?: string[];
  whyThisLocation?: string;
  startDate?: string;
  completionDate?: string;
}

export interface UpdateProjectPayload {
  name?: string;
  developer?: string;
  developerLogo?: string | null;
  totalUnits?: number;
  completedUnits?: number;
  status?: string;
  description?: string | null;
  amenities?: Record<string, unknown> | null;
  masterPlanUrl?: string | null;
  minPrice?: string | null;
  maxPrice?: string | null;
  pricePerM2Range?: Record<string, unknown> | null;
  totalArea?: number | null;
  buildingCount?: number | null;
  floorCount?: number | null;
  unitTypes?: Record<string, unknown> | null;
  media?: Record<string, unknown>[] | null;
  documents?: Record<string, unknown>[] | null;
  tags?: string[];
  suitableFor?: string[];
  whyThisLocation?: string | null;
  isVerified?: boolean;
  startDate?: string | null;
  completionDate?: string | null;
}

export interface SearchProjectsParams {
  city?: string;
  district?: string;
  developerId?: string;
  status?: ProjectStatus;
  propertyType?: ProjectPropertyType;
  minPrice?: string;
  maxPrice?: string;
  sort?: string;
  page?: number;
  limit?: number;
  q?: string;
}

// ─── Status Labels ───────────────────────────────────────

export const PROJECT_STATUS_LABELS: Record<ProjectStatus, string> = {
  PLANNING: 'Đang quy hoạch',
  UNDER_CONSTRUCTION: 'Đang xây dựng',
  HANDOVER: 'Đang bàn giao',
  COMPLETED: 'Đã hoàn thành',
};

export const PROJECT_STATUS_COLORS: Record<ProjectStatus, string> = {
  PLANNING: 'bg-blue-100 text-blue-800',
  UNDER_CONSTRUCTION: 'bg-amber-100 text-amber-800',
  HANDOVER: 'bg-purple-100 text-purple-800',
  COMPLETED: 'bg-gray-100 text-gray-800',
};

export const PROJECT_PROPERTY_TYPE_LABELS: Record<ProjectPropertyType, string> = {
  APARTMENT: 'Căn hộ',
  VILLA: 'Biệt thự',
  TOWNHOUSE: 'Nhà phố',
  SHOPHOUSE: 'Shophouse',
  LAND: 'Đất nền',
  MIXED: 'Tổng hợp',
};

// ─── API Functions ───────────────────────────────────────

export const duAnApi = {
  search: (params: SearchProjectsParams = {}) => {
    const query = new URLSearchParams();
    Object.entries(params).forEach(([key, value]) => {
      if (value !== undefined && value !== '') query.append(key, String(value));
    });
    const qs = query.toString();
    return apiClient.get<PaginatedResult<ProjectSummary>>(
      `/projects${qs ? `?${qs}` : ''}`,
    );
  },

  /** DEVELOPER / ADMIN only — returns projects owned by the current user. */
  searchMine: (params: SearchProjectsParams = {}) => {
    const query = new URLSearchParams();
    Object.entries(params).forEach(([key, value]) => {
      if (value !== undefined && value !== '') query.append(key, String(value));
    });
    const qs = query.toString();
    return apiClient.get<PaginatedResult<ProjectSummary>>(
      `/projects/mine/list${qs ? `?${qs}` : ''}`,
    );
  },

  /** Stats for the "Dự án của tôi" dashboard card — admin + owner only. */
  getStats: (projectId: string) =>
    apiClient.get<{
      projectId: string;
      linkedListingCount: number;
      activeListingCount: number;
      totalInquiries: number;
      unreadInquiries: number;
      savedByUsers: number;
    }>(`/projects/${projectId}/stats`),

  getBySlug: (slug: string) =>
    apiClient.get<ProjectDetail>(`/projects/${slug}`),

  getLinkedListings: (projectId: string, params: { page?: number; limit?: number } = {}) => {
    const query = new URLSearchParams();
    if (params.page) query.append('page', String(params.page));
    if (params.limit) query.append('limit', String(params.limit));
    const qs = query.toString();
    return apiClient.get<PaginatedResult<ListingDetail>>(
      `/projects/${projectId}/listings${qs ? `?${qs}` : ''}`,
    );
  },

  submitInquiry: (projectId: string, data: { name: string; phone: string; message: string }) =>
    apiClient.post<{ inquiryId: string }>(`/projects/${projectId}/inquiries`, data),

  create: (payload: CreateProjectPayload) =>
    apiClient.post<{ id: string; slug: string }>('/projects', payload),

  update: (id: string, payload: UpdateProjectPayload) =>
    apiClient.patch<ProjectDetail>(`/projects/${id}`, payload),

  delete: (id: string) =>
    apiClient.delete<{ success: boolean }>(`/projects/${id}`),
};