import { getPool } from "../database/db";

export class MaterialService {
  // 임시 자재 마스터 목록 조회
  async getTempMaterials(params: {
    search?: string;
    category?: string;
    page?: number;
    limit?: number;
  }) {
    const { search, category, page = 1, limit = 20 } = params;
    const offset = (page - 1) * limit;

    let whereConditions: string[] = ["is_active = true"];
    const queryParams: any[] = [];
    let paramIndex = 1;

    if (search) {
      whereConditions.push(
        `(material_code ILIKE $${paramIndex} OR material_name ILIKE $${paramIndex})`
      );
      queryParams.push(`%${search}%`);
      paramIndex++;
    }

    if (category) {
      whereConditions.push(`category = $${paramIndex}`);
      queryParams.push(category);
      paramIndex++;
    }

    const whereClause =
      whereConditions.length > 0
        ? `WHERE ${whereConditions.join(" AND ")}`
        : "";

    const pool = getPool();

    // 전체 개수 조회
    const countQuery = `SELECT COUNT(*) as total FROM temp_material_master ${whereClause}`;
    const countResult = await pool.query(countQuery, queryParams);
    const total = parseInt(countResult.rows[0].total);

    // 데이터 조회
    const dataQuery = `
      SELECT 
        id,
        material_code,
        material_name,
        category,
        unit,
        default_color,
        description,
        created_at
      FROM temp_material_master
      ${whereClause}
      ORDER BY material_code ASC
      LIMIT $${paramIndex} OFFSET $${paramIndex + 1}
    `;

    queryParams.push(limit, offset);
    const dataResult = await pool.query(dataQuery, queryParams);

    return {
      data: dataResult.rows,
      pagination: {
        page,
        limit,
        total,
        totalPages: Math.ceil(total / limit),
      },
    };
  }

  // 특정 자재 상세 조회
  async getTempMaterialByCode(materialCode: string) {
    const query = `
      SELECT 
        id,
        material_code,
        material_name,
        category,
        unit,
        default_color,
        description,
        created_at
      FROM temp_material_master
      WHERE material_code = $1 AND is_active = true
    `;

    const pool = getPool();
    const result = await pool.query(query, [materialCode]);
    return result.rows[0] || null;
  }

  // 카테고리 목록 조회
  async getCategories() {
    const query = `
      SELECT DISTINCT category
      FROM temp_material_master
      WHERE is_active = true AND category IS NOT NULL
      ORDER BY category ASC
    `;

    const pool = getPool();
    const result = await pool.query(query);
    return result.rows.map((row) => row.category);
  }
}

export default new MaterialService();