backend/src/agents/agents.service.ts

import {
  Injectable,
  NotFoundException,
  ConflictException,
  BadRequestException,
} from '@nestjs/common';
import { PrismaService } from '../prisma/prisma.service';
import {
  CreateAgentProfileDto,
  UpdateAgentProfileDto,
  SearchAgentsDto,
  SaveFieldValuesDto,
} from './dto';
import { Prisma, Prisma as PrismaTypes, VerificationStatus } from '@prisma/client';

function generateSlug(firstName: string, lastName: string): string {
  const base = `${firstName}-${lastName}`
    .toLowerCase()
    .replace(/[^a-z0-9]+/g, '-')
    .replace(/^-|-$/g, '');
  const uniqueSuffix = Math.random().toString(36).substring(2, 8);
  return `${base}-${uniqueSuffix}`;
}

@Injectable()
export class AgentsService {
  constructor(private prisma: PrismaService) {}

  async createProfile(userId: string, dto: CreateAgentProfileDto) {
    // Check if user already has an agent profile
    const existingProfile = await this.prisma.agentProfile.findUnique({
      where: { userId },
    });

    if (existingProfile) {
      throw new ConflictException('User already has an agent profile');
    }

    const slug = generateSlug(dto.firstName, dto.lastName);

    const profile = await this.prisma.agentProfile.create({
      data: {
        ...dto,
        userId,
        slug,
      },
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
        agentType: true,
      },
    });

    return profile;
  }

  async getProfile(userId: string) {
    const profile = await this.prisma.agentProfile.findUnique({
      where: { userId },
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
        agentType: true,
      },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    return profile;
  }

  async getProfileById(profileId: string) {
    const profile = await this.prisma.agentProfile.findUnique({
      where: { id: profileId },
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
        agentType: true,
      },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    return profile;
  }

  async updateProfile(userId: string, dto: UpdateAgentProfileDto) {
    const profile = await this.prisma.agentProfile.findUnique({
      where: { userId },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    // Filter out fields that don't exist in the database schema
    // serviceAreas is accepted by DTO but stored in field values, not direct column
    // eslint-disable-next-line @typescript-eslint/no-unused-vars
    const { serviceAreas, ...profileData } = dto as UpdateAgentProfileDto & {
      serviceAreas?: string[];
    };

    const updatedProfile = await this.prisma.agentProfile.update({
      where: { userId },
      data: profileData,
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
        agentType: true,
      },
    });

    // Sync phone to field values if phone was updated
    // This keeps AgentProfile.phone and AgentProfileFieldValue in sync
    if (dto.phone !== undefined) {
      await this.syncPhoneToFieldValues(profile.id, dto.phone);
    }

    return updatedProfile;
  }

  /**
   * Sync phone from AgentProfile to AgentProfileFieldValue
   * This ensures both storage locations have the same phone value
   */
  private async syncPhoneToFieldValues(
    agentProfileId: string,
    phone: string | null,
  ) {
    // Find any phone-related field definitions
    const phoneField = await this.prisma.profileField.findFirst({
      where: {
        slug: { in: ['phone', 'phone_number', 'cell_number', 'office_number'] },
      },
    });

    if (phoneField) {
      await this.prisma.agentProfileFieldValue.upsert({
        where: {
          agentProfileId_fieldId: {
            agentProfileId,
            fieldId: phoneField.id,
          },
        },
        create: {
          agentProfileId,
          fieldId: phoneField.id,
          textValue: phone,
        },
        update: {
          textValue: phone,
        },
      });
    }
  }

  async searchAgents(dto: SearchAgentsDto) {
    const {
      search,
      location,
      city,
      state,
      country,
      agentTypeId,
      isVerified,
      page = 1,
      limit = 10,
      sortBy = 'createdAt',
      sortOrder = 'desc',
      filters,
    } = dto;

    const skip = (page - 1) * limit;

    // Build where clause
    const where: Prisma.AgentProfileWhereInput = {};

    if (search) {
      where.OR = [
        { firstName: { contains: search, mode: 'insensitive' } },
        { lastName: { contains: search, mode: 'insensitive' } },
        { bio: { contains: search, mode: 'insensitive' } },
        { headline: { contains: search, mode: 'insensitive' } },
        { companyName: { contains: search, mode: 'insensitive' } },
      ];
    }

    // General location search - searches across legacy columns AND dynamic field values
    if (location) {
      // Find agent IDs that have matching city/state in dynamic field values
      // City and State are CHECKBOX_GROUP fields stored as JSON arrays in jsonValue
      const locationFields = await this.prisma.profileField.findMany({
        where: { slug: { in: ['city', 'state', 'service_areas'] } },
        select: { id: true },
      });

      const fieldIds = locationFields.map((f) => f.id);

      let matchingAgentIds: string[] = [];
      if (fieldIds.length > 0) {
        // Search jsonValue (JSON arrays) and textValue using raw SQL for case-insensitive JSON content matching
        const locationLower = location.toLowerCase();
        // Also match snake_case version (e.g., "New York" -> "new_york")
        const locationSnakeCase = locationLower.replace(/\s+/g, '_');

        const matchingFieldValues =
          await this.prisma.agentProfileFieldValue.findMany({
            where: {
              fieldId: { in: fieldIds },
              OR: [
                {
                  textValue: { contains: location, mode: 'insensitive' },
                },
              ],
            },
            select: { agentProfileId: true, jsonValue: true },
          });

        // Also fetch all field values with jsonValue for these fields to search within JSON arrays
        const jsonFieldValues =
          await this.prisma.agentProfileFieldValue.findMany({
            where: {
              fieldId: { in: fieldIds },
              jsonValue: { not: Prisma.JsonNull },
            },
            select: { agentProfileId: true, jsonValue: true },
          });

        // Filter JSON array values that contain the location string
        const jsonMatchIds = jsonFieldValues
          .filter((fv) => {
            const val = fv.jsonValue;
            if (Array.isArray(val)) {
              return val.some((v: unknown) => {
                if (typeof v !== 'string') return false;
                const vLower = v.toLowerCase();
                return (
                  vLower.includes(locationLower) ||
                  vLower.includes(locationSnakeCase) ||
                  locationLower.includes(vLower) ||
                  locationSnakeCase.includes(vLower)
                );
              });
            }
            if (typeof val === 'string') {
              return val.toLowerCase().includes(locationLower);
            }
            return false;
          })
          .map((fv) => fv.agentProfileId);

        const textMatchIds = matchingFieldValues.map(
          (fv) => fv.agentProfileId,
        );
        matchingAgentIds = [
          ...new Set([...textMatchIds, ...jsonMatchIds]),
        ];
      }

      // Search legacy columns OR dynamic field values
      where.OR = [
        ...(where.OR || []),
        { city: { contains: location, mode: 'insensitive' } },
        { state: { contains: location, mode: 'insensitive' } },
        { country: { contains: location, mode: 'insensitive' } },
        ...(matchingAgentIds.length > 0
          ? [{ id: { in: matchingAgentIds } }]
          : []),
      ];
    }

    if (city) {
      where.city = { contains: city, mode: 'insensitive' };
    }

    if (state) {
      where.state = { contains: state, mode: 'insensitive' };
    }

    if (country) {
      where.country = { contains: country, mode: 'insensitive' };
    }

    if (isVerified !== undefined) {
      where.isVerified = isVerified;
    }

    // Filter by agent type
    if (agentTypeId) {
      where.agentTypeId = agentTypeId;
    }

    // Process dynamic profile field filters
    if (filters) {
      try {
        const parsedFilters: Record<string, string[]> = JSON.parse(filters);
        const filterSlugs = Object.keys(parsedFilters);

        if (filterSlugs.length > 0) {
          // Get field IDs for the filter slugs
          const fields = await this.prisma.profileField.findMany({
            where: { slug: { in: filterSlugs } },
            select: {
              id: true,
              slug: true,
            },
          });

          // Group fields by slug (same slug can exist in multiple type-specific sections)
          const slugToFields = new Map<string, typeof fields>();
          for (const f of fields) {
            const existing = slugToFields.get(f.slug) || [];
            existing.push(f);
            slugToFields.set(f.slug, existing);
          }

          // For each filter, find agents that have ANY of the selected values
          // Use AND logic between different filter slugs, OR logic within same slug
          const filterConditions: string[][] = [];

          for (const [slug, selectedValues] of Object.entries(parsedFilters)) {
            const slugFields = slugToFields.get(slug);
            if (!slugFields || slugFields.length === 0 || !selectedValues || selectedValues.length === 0) continue;

            // Search across ALL fields with this slug (e.g. loan_type in both Professional and Lender sections)
            const allMatchingAgentIds: string[] = [];
            const fieldIds = slugFields.map((f) => f.id);

            const matchingValues = await this.prisma.agentProfileFieldValue.findMany({
              where: { fieldId: { in: fieldIds } },
              select: {
                agentProfileId: true,
                jsonValue: true,
              },
            });

            const matchingIds = matchingValues
              .filter((fv) => {
                const jsonVal = fv.jsonValue as string[] | null;
                if (!jsonVal || !Array.isArray(jsonVal)) return false;
                return selectedValues.some((sv) => jsonVal.includes(sv));
              })
              .map((fv) => fv.agentProfileId);

            allMatchingAgentIds.push(...matchingIds);

            filterConditions.push([...new Set(allMatchingAgentIds)]);
          }

          // AND all filter conditions - find intersection of all matching agent IDs
          if (filterConditions.length > 0) {
            const intersection = filterConditions.reduce((acc, curr) => {
              const currSet = new Set(curr);
              return acc.filter((id) => currSet.has(id));
            });

            // If no agents match all filters, return empty result
            if (intersection.length === 0) {
              return {
                data: [],
                meta: {
                  total: 0,
                  page,
                  limit,
                  totalPages: 0,
                },
              };
            }

            where.id = { in: intersection };
          }
        }
      } catch {
        // Invalid JSON, ignore filters
      }
    }

    // Build orderBy
    const orderBy: Prisma.AgentProfileOrderByWithRelationInput = {};
    if (sortBy === 'averageRating') {
      orderBy.averageRating = sortOrder;
    } else if (sortBy === 'totalReviews') {
      orderBy.totalReviews = sortOrder;
    } else if (sortBy === 'firstName') {
      orderBy.firstName = sortOrder;
    } else {
      orderBy.createdAt = sortOrder;
    }

    const [agents, total] = await Promise.all([
      this.prisma.agentProfile.findMany({
        where,
        skip,
        take: limit,
        orderBy,
        include: {
          user: {
            select: {
              id: true,
              email: true,
              avatar: true,
            },
          },
          agentType: true,
          fieldValues: {
            include: {
              field: {
                select: {
                  slug: true,
                  name: true,
                  fieldType: true,
                },
              },
            },
          },
        },
      }),
      this.prisma.agentProfile.count({ where }),
    ]);

    return {
      data: agents,
      meta: {
        total,
        page,
        limit,
        totalPages: Math.ceil(total / limit),
      },
    };
  }

  async getFeaturedAgents(limit = 10) {
    const agents = await this.prisma.agentProfile.findMany({
      where: {
        isVerified: true,
        isFeatured: true,
      },
      take: limit,
      orderBy: [{ averageRating: 'desc' }, { totalReviews: 'desc' }],
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
        agentType: true,
      },
    });

    return agents;
  }

  async getTopRatedAgents(limit = 10) {
    const agents = await this.prisma.agentProfile.findMany({
      where: {
        isVerified: true,
        totalReviews: { gte: 5 },
      },
      take: limit,
      orderBy: [{ averageRating: 'desc' }, { totalReviews: 'desc' }],
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
        agentType: true,
      },
    });

    return agents;
  }

  // Admin methods
  async adminUpdateProfile(profileId: string, dto: UpdateAgentProfileDto) {
    const profile = await this.prisma.agentProfile.findUnique({
      where: { id: profileId },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    const updatedProfile = await this.prisma.agentProfile.update({
      where: { id: profileId },
      data: dto,
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
        agentType: true,
      },
    });

    return updatedProfile;
  }

  async adminDeleteProfile(profileId: string) {
    const profile = await this.prisma.agentProfile.findUnique({
      where: { id: profileId },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    await this.prisma.agentProfile.delete({
      where: { id: profileId },
    });

    return { message: 'Agent profile deleted successfully' };
  }

  async adminVerifyAgent(
    profileId: string,
    data: {
      status: VerificationStatus;
      note?: string;
      adminId: string;
    },
  ) {
    const profile = await this.prisma.agentProfile.findUnique({
      where: { id: profileId },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    const updateData: Prisma.AgentProfileUpdateInput = {
      verificationStatus: data.status,
      verificationNote: data.note || null,
    };

    if (data.status === VerificationStatus.APPROVED) {
      updateData.isVerified = true;
      updateData.verifiedAt = new Date();
      updateData.verifiedBy = data.adminId;
    } else if (data.status === VerificationStatus.REJECTED) {
      updateData.isVerified = false;
      updateData.verifiedAt = null;
      updateData.verifiedBy = null;
    }

    const updatedProfile = await this.prisma.agentProfile.update({
      where: { id: profileId },
      data: updateData,
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
      },
    });

    return updatedProfile;
  }

  async getVerificationDocuments(agentProfileId: string) {
    // Find the upload-documents section field
    const field = await this.prisma.profileField.findFirst({
      where: {
        section: { slug: 'upload-documents' },
        slug: 'documents',
      },
    });

    if (!field) return [];

    const fieldValue = await this.prisma.agentProfileFieldValue.findUnique({
      where: {
        agentProfileId_fieldId: { agentProfileId, fieldId: field.id },
      },
    });

    return fieldValue?.jsonValue || [];
  }

  async adminSetFeatured(profileId: string, isFeatured: boolean) {
    const profile = await this.prisma.agentProfile.findUnique({
      where: { id: profileId },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    const updatedProfile = await this.prisma.agentProfile.update({
      where: { id: profileId },
      data: { isFeatured },
      include: {
        user: {
          select: {
            id: true,
            email: true,
            avatar: true,
          },
        },
      },
    });

    return updatedProfile;
  }

  async getAllAgentsAdmin(dto: SearchAgentsDto) {
    // Same as searchAgents but returns all data for admin
    return this.searchAgents(dto);
  }

  // Field Values methods
  async saveFieldValues(userId: string, dto: SaveFieldValuesDto) {
    // Get agent profile
    const profile = await this.prisma.agentProfile.findUnique({
      where: { userId },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    // Process each field value
    const results: Array<{
      id: string;
      agentProfileId: string;
      fieldId: string;
      textValue: string | null;
      numberValue: number | null;
      booleanValue: boolean | null;
      jsonValue: Prisma.JsonValue;
      dateValue: Date | null;
      createdAt: Date;
      updatedAt: Date;
      field: {
        id: string;
        slug: string;
        name: string;
        fieldType: string;
      };
    }> = [];
    for (const fieldValue of dto.fieldValues) {
      // Find the field by slug, preferring the one from a section assigned to this agent's type
      const candidateFields = await this.prisma.profileField.findMany({
        where: { slug: fieldValue.fieldSlug },
        include: {
          section: {
            include: {
              agentTypeSections: { select: { agentTypeId: true } },
            },
          },
        },
      });

      if (candidateFields.length === 0) {
        // Skip fields that don't exist
        continue;
      }

      // Pick the field from a section assigned to this agent's type, or global, or fallback to first
      const field =
        candidateFields.find(
          (f) =>
            f.section.agentTypeSections.some(
              (ats) => ats.agentTypeId === profile.agentTypeId,
            ),
        ) ||
        candidateFields.find((f) => f.section.isGlobal) ||
        candidateFields[0];

      // Determine which column to use based on value type and field type
      const valueData = this.getValueData(field.fieldType, fieldValue.value);

      // Upsert the field value
      const result = await this.prisma.agentProfileFieldValue.upsert({
        where: {
          agentProfileId_fieldId: {
            agentProfileId: profile.id,
            fieldId: field.id,
          },
        },
        create: {
          agentProfileId: profile.id,
          fieldId: field.id,
          ...valueData,
        },
        update: valueData,
        include: {
          field: {
            select: {
              id: true,
              slug: true,
              name: true,
              fieldType: true,
            },
          },
        },
      });

      results.push(result);
    }

    // Sync phone from field values to AgentProfile.phone
    // This keeps both storage locations in sync
    const phoneSlugs = ['phone', 'phone_number', 'cell_number', 'office_number'];
    const phoneFieldValue = dto.fieldValues.find((fv) =>
      phoneSlugs.includes(fv.fieldSlug),
    );

    if (phoneFieldValue !== undefined) {
      const phoneValue = phoneFieldValue.value;
      await this.prisma.agentProfile.update({
        where: { id: profile.id },
        data: {
          phone:
            phoneValue === '' || phoneValue === null
              ? null
              : String(phoneValue),
        },
      });
    }

    return {
      message: 'Field values saved successfully',
      savedCount: results.length,
      data: results,
    };
  }

  async getFieldValues(userId: string) {
    // Get agent profile
    const profile = await this.prisma.agentProfile.findUnique({
      where: { userId },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    // Get all field values for this profile
    const fieldValues = await this.prisma.agentProfileFieldValue.findMany({
      where: { agentProfileId: profile.id },
      include: {
        field: {
          select: {
            id: true,
            slug: true,
            name: true,
            fieldType: true,
            section: {
              select: {
                id: true,
                slug: true,
                name: true,
              },
            },
          },
        },
      },
    });

    // Transform to a more usable format
    const transformedValues = fieldValues.map((fv) => ({
      fieldSlug: fv.field.slug,
      fieldName: fv.field.name,
      fieldType: fv.field.fieldType,
      sectionSlug: fv.field.section.slug,
      sectionName: fv.field.section.name,
      value: this.extractValue(fv),
    }));

    return {
      agentProfileId: profile.id,
      fieldValues: transformedValues,
    };
  }

  async getFieldValuesByAgentId(agentId: string) {
    // Get agent profile by ID
    const profile = await this.prisma.agentProfile.findUnique({
      where: { id: agentId },
    });

    if (!profile) {
      throw new NotFoundException('Agent profile not found');
    }

    // Get all field values for this profile
    const fieldValues = await this.prisma.agentProfileFieldValue.findMany({
      where: { agentProfileId: profile.id },
      include: {
        field: {
          select: {
            id: true,
            slug: true,
            name: true,
            fieldType: true,
            section: {
              select: {
                id: true,
                slug: true,
                name: true,
              },
            },
          },
        },
      },
    });

    // Transform to a more usable format
    const transformedValues = fieldValues.map((fv) => ({
      fieldSlug: fv.field.slug,
      fieldName: fv.field.name,
      fieldType: fv.field.fieldType,
      sectionSlug: fv.field.section.slug,
      sectionName: fv.field.section.name,
      value: this.extractValue(fv),
    }));

    return {
      agentProfileId: profile.id,
      fieldValues: transformedValues,
    };
  }

  private getValueData(
    fieldType: string,
    value: string | number | boolean | string[] | Record<string, unknown> | null,
  ): {
    textValue: string | null;
    numberValue: number | null;
    booleanValue: boolean | null;
    jsonValue: PrismaTypes.InputJsonValue | typeof PrismaTypes.DbNull;
    dateValue: Date | null;
  } {
    // Reset all value columns
    const valueData: {
      textValue: string | null;
      numberValue: number | null;
      booleanValue: boolean | null;
      jsonValue: PrismaTypes.InputJsonValue | typeof PrismaTypes.DbNull;
      dateValue: Date | null;
    } = {
      textValue: null,
      numberValue: null,
      booleanValue: null,
      jsonValue: PrismaTypes.DbNull,
      dateValue: null,
    };

    if (value === null || value === undefined) {
      return valueData;
    }

    switch (fieldType) {
      case 'TEXT':
      case 'TEXTAREA':
        valueData.textValue = String(value);
        break;
      case 'NUMBER':
      case 'RANGE':
        valueData.numberValue =
          typeof value === 'number' ? value : parseFloat(String(value));
        break;
      case 'CHECKBOX':
        valueData.booleanValue =
          typeof value === 'boolean' ? value : value === 'true';
        break;
      case 'DATE':
        valueData.dateValue = new Date(String(value));
        break;
      case 'SELECT':
      case 'RADIO':
        // Single selection - store as text
        valueData.textValue = String(value);
        break;
      case 'MULTI_SELECT':
      case 'CHECKBOX_GROUP':
      case 'TAG_INPUT':
      case 'FILE':
      case 'FILE_UPLOAD':
      case 'REPEATER':
        // Arrays and complex objects - store as JSON
        valueData.jsonValue = value as PrismaTypes.InputJsonValue;
        break;
      default:
        // Default to JSON for unknown types
        if (typeof value === 'object') {
          valueData.jsonValue = value as PrismaTypes.InputJsonValue;
        } else {
          valueData.textValue = String(value);
        }
    }

    return valueData;
  }

  private extractValue(fieldValue: {
    textValue: string | null;
    numberValue: number | null;
    booleanValue: boolean | null;
    jsonValue: unknown;
    dateValue: Date | null;
    field: { fieldType: string };
  }): unknown {
    const { fieldType } = fieldValue.field;

    switch (fieldType) {
      case 'TEXT':
      case 'TEXTAREA':
      case 'SELECT':
      case 'RADIO':
        return fieldValue.textValue;
      case 'NUMBER':
      case 'RANGE':
        return fieldValue.numberValue;
      case 'CHECKBOX':
        return fieldValue.booleanValue;
      case 'DATE':
        return fieldValue.dateValue?.toISOString();
      case 'MULTI_SELECT':
      case 'CHECKBOX_GROUP':
      case 'TAG_INPUT':
      case 'FILE':
      case 'FILE_UPLOAD':
      case 'REPEATER':
        return fieldValue.jsonValue;
      default:
        // Return first non-null value
        return (
          fieldValue.jsonValue ??
          fieldValue.textValue ??
          fieldValue.numberValue ??
          fieldValue.booleanValue ??
          fieldValue.dateValue?.toISOString()
        );
    }
  }

  // =============================================
  // NOTIFICATION PREFERENCES
  // =============================================

  async getNotificationPreferences(userId: string) {
    const user = await this.prisma.user.findUnique({
      where: { id: userId },
      select: { notificationPreferences: true, role: true },
    });

    if (!user) {
      throw new NotFoundException('User not found');
    }

    if (user.role !== 'AGENT') {
      throw new BadRequestException('This endpoint is for agents only');
    }

    // Return preferences or default empty object
    return user.notificationPreferences || { email: {}, push: {} };
  }

  async updateNotificationPreferences(
    userId: string,
    preferences: { email?: Record<string, boolean>; push?: Record<string, boolean> },
  ) {
    const user = await this.prisma.user.findUnique({
      where: { id: userId },
      select: { role: true },
    });

    if (!user) {
      throw new NotFoundException('User not found');
    }

    if (user.role !== 'AGENT') {
      throw new BadRequestException('This endpoint is for agents only');
    }

    const updatedUser = await this.prisma.user.update({
      where: { id: userId },
      data: {
        notificationPreferences: preferences,
      },
      select: { notificationPreferences: true },
    });

    return updatedUser.notificationPreferences;
  }

  // =============================================
  // PRIVACY PREFERENCES
  // =============================================

  async getPrivacyPreferences(userId: string) {
    const user = await this.prisma.user.findUnique({
      where: { id: userId },
      select: { privacyPreferences: true, role: true },
    });

    if (!user) {
      throw new NotFoundException('User not found');
    }

    if (user.role !== 'AGENT') {
      throw new BadRequestException('This endpoint is for agents only');
    }

    // Return preferences or default empty object
    return user.privacyPreferences || { privacySettings: {}, dataSettings: {} };
  }

  async updatePrivacyPreferences(
    userId: string,
    preferences: {
      privacySettings?: Record<string, string>;
      dataSettings?: Record<string, boolean>;
    },
  ) {
    const user = await this.prisma.user.findUnique({
      where: { id: userId },
      select: { role: true },
    });

    if (!user) {
      throw new NotFoundException('User not found');
    }

    if (user.role !== 'AGENT') {
      throw new BadRequestException('This endpoint is for agents only');
    }

    const updatedUser = await this.prisma.user.update({
      where: { id: userId },
      data: {
        privacyPreferences: preferences,
      },
      select: { privacyPreferences: true },
    });

    return updatedUser.privacyPreferences;
  }

  // =============================================
  // DELETE ACCOUNT
  // =============================================

  async deleteAccount(userId: string) {
    const user = await this.prisma.user.findUnique({
      where: { id: userId },
      select: { id: true, role: true },
    });

    if (!user) {
      throw new NotFoundException('User not found');
    }

    if (user.role !== 'AGENT') {
      throw new BadRequestException('This endpoint is for agents only');
    }

    // Delete in a transaction to ensure data consistency
    await this.prisma.$transaction(async (tx) => {
      // First, delete the agent profile and related data
      const agentProfile = await tx.agentProfile.findUnique({
        where: { userId },
      });

      if (agentProfile) {
        // Delete agent profile field values
        await tx.agentProfileFieldValue.deleteMany({
          where: { agentProfileId: agentProfile.id },
        });

        // Delete the agent profile
        await tx.agentProfile.delete({
          where: { userId },
        });
      }

      // Finally, delete the user account
      await tx.user.delete({
        where: { id: userId },
      });
    });

    return { message: 'Account deleted successfully' };
  }
}