const couchdbService = require("../services/couchdbService");

class Badge {
  static async findAll() {
    try {
      const result = await couchdbService.find({
        selector: { type: 'badge' },
        sort: [{ order: 'asc' }]
      });
      return result.docs;
    } catch (error) {
      console.error('Error finding badges:', error);
      throw error;
    }
  }

  static async findById(id) {
    try {
      const badge = await couchdbService.get(id);
      if (badge.type !== 'badge') {
        return null;
      }
      return badge;
    } catch (error) {
      if (error.statusCode === 404) {
        return null;
      }
      console.error('Error finding badge by ID:', error);
      throw error;
    }
  }

  static async create(badgeData) {
    try {
      const badge = {
        _id: `badge_${Date.now()}_${Math.random().toString(36).substr(2, 9)}`,
        type: 'badge',
        name: badgeData.name,
        description: badgeData.description,
        icon: badgeData.icon,
        criteria: badgeData.criteria,
        rarity: badgeData.rarity || 'common',
        order: badgeData.order || 0,
        isActive: badgeData.isActive !== undefined ? badgeData.isActive : true,
        createdAt: new Date().toISOString(),
        updatedAt: new Date().toISOString()
      };

      const result = await couchdbService.createDocument(badge);
      return { ...badge, _rev: result.rev };
    } catch (error) {
      console.error('Error creating badge:', error);
      throw error;
    }
  }

  static async update(id, updateData) {
    try {
      const existingBadge = await couchdbService.get(id);
      if (existingBadge.type !== 'badge') {
        throw new Error('Document is not a badge');
      }

      const updatedBadge = {
        ...existingBadge,
        ...updateData,
        updatedAt: new Date().toISOString()
      };

      const result = await couchdbService.createDocument(updatedBadge);
      return { ...updatedBadge, _rev: result.rev };
    } catch (error) {
      console.error('Error updating badge:', error);
      throw error;
    }
  }

  static async delete(id) {
    try {
      const badge = await couchdbService.get(id);
      if (badge.type !== 'badge') {
        throw new Error('Document is not a badge');
      }

      await couchdbService.destroy(id, badge._rev);
      return true;
    } catch (error) {
      console.error('Error deleting badge:', error);
      throw error;
    }
  }

  static async findByCriteria(criteriaType, threshold) {
    try {
      const result = await couchdbService.find({
        selector: {
          type: 'badge',
          'criteria.type': criteriaType,
          'criteria.threshold': { $lte: threshold }
        },
        sort: [{ 'criteria.threshold': 'desc' }]
      });
      return result.docs;
    } catch (error) {
      console.error('Error finding badges by criteria:', error);
      throw error;
    }
  }

  static async findByRarity(rarity) {
    try {
      const result = await couchdbService.find({
        selector: {
          type: 'badge',
          rarity: rarity
        },
        sort: [{ order: 'asc' }]
      });
      return result.docs;
    } catch (error) {
      console.error('Error finding badges by rarity:', error);
      throw error;
    }
  }
}

module.exports = Badge;