bharat_erp/lib/shared/models/vendor_model.dart

import 'package:freezed_annotation/freezed_annotation.dart';

part 'vendor_model.freezed.dart';
part 'vendor_model.g.dart';

String _idFromJson(Object? value) => value?.toString() ?? '';

int? _intFromJsonNullable(Object? value) {
  if (value == null) return null;
  if (value is int) return value;
  if (value is num) return value.toInt();
  return int.tryParse(value.toString());
}

DateTime? _dateFromJsonNullable(Object? value) {
  if (value == null) return null;
  if (value is DateTime) return value;
  return DateTime.tryParse(value.toString());
}

Object? _readPaymentTermName(Map<dynamic, dynamic> json, String key) {
  final flat = json['payment_term_name'];
  if (flat is String && flat.isNotEmpty) return flat;
  final nested = json['payment_term'];
  if (nested is Map) return nested['name'];
  return null;
}

Object? _readPaymentTermId(Map<dynamic, dynamic> json, String key) {
  final flat = json['payment_term_id'];
  if (flat != null) return flat;
  final nested = json['payment_term'];
  if (nested is Map) return nested['id'];
  return null;
}

@freezed
class VendorModel with _$VendorModel {
  const factory VendorModel({
    @JsonKey(fromJson: _idFromJson) required String id,
    @JsonKey(name: 'vendor_code') String? vendorCode,
    @JsonKey(name: 'vendor_name') required String vendorName,
    @JsonKey(name: 'vendor_type') String? vendorType,
    String? gstin,
    String? pan,
    @JsonKey(name: 'payment_term_id', fromJson: _intFromJsonNullable)
    int? paymentTermId,
    @JsonKey(name: 'payment_term_name', readValue: _readPaymentTermName)
    String? paymentTermName,
    @JsonKey(name: 'credit_period_days', fromJson: _intFromJsonNullable)
    int? creditPeriodDays,
    String? remarks,
    String? status,
    @JsonKey(name: 'is_active') @Default(true) bool isActive,
    @JsonKey(name: 'created_at', fromJson: _dateFromJsonNullable)
    DateTime? createdAt,
    @JsonKey(name: 'updated_at', fromJson: _dateFromJsonNullable)
    DateTime? updatedAt,
    @Default([]) List<VendorAddressModel> addresses,
    @Default([]) List<VendorContactModel> contacts,
    @JsonKey(name: 'bank_details') @Default([]) List<VendorBankDetailModel> bankDetails,
  }) = _VendorModel;

  factory VendorModel.fromJson(Map<String, dynamic> json) =>
      _$VendorModelFromJson(json);
}

@freezed
class VendorAddressModel with _$VendorAddressModel {
  const factory VendorAddressModel({
    @JsonKey(fromJson: _idFromJson) required String id,
    @JsonKey(name: 'vendor_id', fromJson: _idFromJson) String? vendorId,
    @JsonKey(name: 'address_type') String? addressType,
    @JsonKey(name: 'address_line1') String? addressLine1,
    @JsonKey(name: 'address_line2') String? addressLine2,
    String? city,
    String? state,
    String? pincode,
    String? country,
    String? gstin,
    @JsonKey(name: 'is_active') @Default(true) bool isActive,
  }) = _VendorAddressModel;

  factory VendorAddressModel.fromJson(Map<String, dynamic> json) =>
      _$VendorAddressModelFromJson(json);
}

@freezed
class VendorContactModel with _$VendorContactModel {
  const factory VendorContactModel({
    @JsonKey(fromJson: _idFromJson) required String id,
    @JsonKey(name: 'vendor_id', fromJson: _idFromJson) String? vendorId,
    @JsonKey(name: 'contact_name') required String contactName,
    String? designation,
    String? phone,
    String? email,
    @JsonKey(name: 'is_primary') @Default(false) bool isPrimary,
    @JsonKey(name: 'is_active') @Default(true) bool isActive,
  }) = _VendorContactModel;

  factory VendorContactModel.fromJson(Map<String, dynamic> json) =>
      _$VendorContactModelFromJson(json);
}

@freezed
class VendorBankDetailModel with _$VendorBankDetailModel {
  const factory VendorBankDetailModel({
    @JsonKey(fromJson: _idFromJson) required String id,
    @JsonKey(name: 'vendor_id', fromJson: _idFromJson) String? vendorId,
    @JsonKey(name: 'bank_name') String? bankName,
    String? branch,
    @JsonKey(name: 'account_number') String? accountNumber,
    String? ifsc,
    @JsonKey(name: 'account_holder_name') String? accountHolderName,
    @JsonKey(name: 'account_type') String? accountType,
    @JsonKey(name: 'is_primary') @Default(false) bool isPrimary,
    @JsonKey(name: 'is_active') @Default(true) bool isActive,
  }) = _VendorBankDetailModel;

  factory VendorBankDetailModel.fromJson(Map<String, dynamic> json) =>
      _$VendorBankDetailModelFromJson(json);
}

@freezed
class VendorListQuery with _$VendorListQuery {
  const factory VendorListQuery({
    @Default(1) int page,
    @Default(20) int limit,
    String? search,
    String? status,
    String? vendorType,
    bool? isActive,
  }) = _VendorListQuery;
}

const vendorTypeOptions = [
  ('RAW_MATERIAL', 'Raw Material'),
  ('PACKING_MATERIAL', 'Packing Material'),
  ('ASSET_CAPITAL', 'Asset / Capital'),
  ('SERVICE', 'Service'),
  ('GENERAL', 'General'),
];

const vendorStatusOptions = [
  ('active', 'Active'),
  ('inactive', 'Inactive'),
  ('blacklisted', 'Blacklisted'),
];

const addressTypeOptions = [
  ('REGISTERED', 'Registered'),
  ('BILLING', 'Billing'),
  ('DISPATCH', 'Dispatch'),
];

const accountTypeOptions = [
  ('CURRENT', 'Current'),
  ('SAVINGS', 'Savings'),
  ('OVERDRAFT', 'Overdraft'),
];

String vendorTypeLabel(String? value) {
  if (value == null) return '—';
  return vendorTypeOptions
          .where((e) => e.$1 == value)
          .map((e) => e.$2)
          .firstOrNull ??
      value;
}

String vendorStatusLabel(String? value) {
  if (value == null) return '—';
  return vendorStatusOptions
          .where((e) => e.$1 == value)
          .map((e) => e.$2)
          .firstOrNull ??
      value;
}