import { Injectable, Logger } from '@nestjs/common';
import { PrismaService } from '../prisma/prisma.service';
import { SmsService } from '../common/services/sms.service';

export interface CreateContactSubmissionDto {
  name: string;
  phone: string;
  email?: string;
  subject?: string;
  message: string;
}

export interface UpdateContactInfoItemDto {
  key: string;
  title: string;
  value: string;
  icon?: string;
  order?: number;
}

@Injectable()
export class ContactService {
  private readonly logger = new Logger(ContactService.name);

  constructor(
    private readonly prisma: PrismaService,
    private readonly smsService: SmsService,
  ) {}

  async submitContactForm(dto: CreateContactSubmissionDto) {
    const submission = await this.prisma.contactSubmission.create({
      data: {
        name: dto.name,
        phone: dto.phone,
        email: dto.email,
        subject: dto.subject,
        message: dto.message,
      },
    });

    // Send SMS confirmation to User & notification to Admin
    try {
      const userPatternId = parseInt(
        process.env.MELIPAYAMAK_CONTACT_USER_BODY_ID || '508081',
        10,
      );
      await this.smsService.sendPatternSms({
        to: dto.phone,
        bodyId: userPatternId,
        args: [dto.name, 'فرم تماس'],
      });

      const adminPhone = process.env.ADMIN_MOBILE || '09364100228';
      const adminPatternId = parseInt(
        process.env.MELIPAYAMAK_CONTACT_ADMIN_BODY_ID || '508083',
        10,
      );
      await this.smsService.sendPatternSms({
        to: adminPhone,
        bodyId: adminPatternId,
        args: [dto.name, dto.phone],
      });
    } catch (err) {
      this.logger.error(
        `SMS trigger error on contact submission: ${err.message}`,
      );
    }

    return {
      success: true,
      message:
        'پیام شما با موفقیت ثبت شد و به‌زودی کارشناسان ما با شما تماس خواهند گرفت.',
      submissionId: submission.id,
    };
  }

  async getContactInfo() {
    let items = await this.prisma.contactInfo.findMany({
      orderBy: { order: 'asc' },
    });

    if (items.length === 0) {
      // Seed default items if empty
      const defaultItems = [
        {
          key: 'branch_info',
          title: 'اطلاعات نمایندگی',
          value:
            'تلفن‌های تماس\n۰۲۱-۸۸۸۸ ۴۴۴۴\n\nشنبه تا چهارشنبه ۹:۰۰ الی ۱۸:۰۰',
          icon: 'phone',
          order: 1,
        },
        {
          key: 'email_info',
          title: 'پست الکترونیک',
          value: 'info@canina-iran.com\n\nپاسخگویی در کمتر از ۲۴ ساعت کاری',
          icon: 'mail',
          order: 2,
        },
        {
          key: 'address_info',
          title: 'نشانی دفتر مرکزی',
          value: 'تهران، جردن، خیابان سعیدی، ساختمان کانینا، طبقه ۵، واحد ۱۹',
          icon: 'map-pin',
          order: 3,
        },
      ];

      for (const item of defaultItems) {
        await this.prisma.contactInfo.upsert({
          where: { key: item.key },
          update: {},
          create: item,
        });
      }

      items = await this.prisma.contactInfo.findMany({
        orderBy: { order: 'asc' },
      });
    }

    return items;
  }

  async getAllSubmissions(page = 1, limit = 20, status?: string) {
    const skip = (page - 1) * limit;
    const where = status ? { status } : {};

    const [items, total] = await Promise.all([
      this.prisma.contactSubmission.findMany({
        where,
        skip,
        take: limit,
        orderBy: { createdAt: 'desc' },
      }),
      this.prisma.contactSubmission.count({ where }),
    ]);

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

  async updateSubmissionStatus(
    id: string,
    status: string,
    adminNotes?: string,
  ) {
    return this.prisma.contactSubmission.update({
      where: { id },
      data: { status, adminNotes },
    });
  }

  async updateContactInfoItems(items: UpdateContactInfoItemDto[]) {
    for (const item of items) {
      await this.prisma.contactInfo.upsert({
        where: { key: item.key },
        update: {
          title: item.title,
          value: item.value,
          icon: item.icon,
          order: item.order ?? 0,
        },
        create: {
          key: item.key,
          title: item.title,
          value: item.value,
          icon: item.icon,
          order: item.order ?? 0,
        },
      });
    }
    return this.getContactInfo();
  }
}