package repository

import (
	"context"

	"github.com/Caknoooo/go-gin-clean-starter/database/entities"
	"github.com/Caknoooo/go-gin-clean-starter/modules/warehouse/query"
	"gorm.io/gorm"
)

type WarehouseRepository interface {
	Create(ctx context.Context, tx *gorm.DB, warehouse entities.MWarehouseEntity) (entities.MWarehouseEntity, error)
	GetById(ctx context.Context, tx *gorm.DB, warehouseId string) (entities.MWarehouseEntity, error)
	GetAll(ctx context.Context, filter query.WarehouseFilter) ([]entities.MWarehouseEntity, int64, error)
	Update(ctx context.Context, tx *gorm.DB, warehouse entities.MWarehouseEntity) (entities.MWarehouseEntity, error)
	Delete(ctx context.Context, tx *gorm.DB, warehouseId string) error
}

type warehouseRepository struct {
	db *gorm.DB
}

func NewWarehouseRepository(db *gorm.DB) WarehouseRepository {
	return &warehouseRepository{db: db}
}

func (r *warehouseRepository) Create(ctx context.Context, tx *gorm.DB, warehouse entities.MWarehouseEntity) (entities.MWarehouseEntity, error) {
	if tx == nil {
		tx = r.db
	}
	if err := tx.WithContext(ctx).Create(&warehouse).Error; err != nil {
		return warehouse, err
	}
	return warehouse, nil
}

func (r *warehouseRepository) GetById(ctx context.Context, tx *gorm.DB, warehouseId string) (entities.MWarehouseEntity, error) {
	if tx == nil {
		tx = r.db
	}
	var warehouse entities.MWarehouseEntity
	if err := tx.WithContext(ctx).Preload("Client").First(&warehouse, "id = ?", warehouseId).Error; err != nil {
		return warehouse, err
	}
	return warehouse, nil
}

func (r *warehouseRepository) GetAll(ctx context.Context, filter query.WarehouseFilter) ([]entities.MWarehouseEntity, int64, error) {
	var warehouses []entities.MWarehouseEntity
	var total int64
	db := query.ApplyWarehouseFilters(r.db, filter)
	db.Model(&entities.MWarehouseEntity{}).Count(&total)
	if filter.PerPage > 0 && filter.Page > 0 {
		db = db.Offset((filter.Page - 1) * filter.PerPage).Limit(filter.PerPage)
	}
	if err := db.Find(&warehouses).Error; err != nil {
		return warehouses, total, err
	}
	return warehouses, total, nil
}

func (r *warehouseRepository) Update(ctx context.Context, tx *gorm.DB, warehouse entities.MWarehouseEntity) (entities.MWarehouseEntity, error) {
	if tx == nil {
		tx = r.db
	}
	if err := tx.WithContext(ctx).Model(&entities.MWarehouseEntity{}).Where("id = ?", warehouse.ID).Updates(&warehouse).Error; err != nil {
		return warehouse, err
	}
	return warehouse, nil
}

func (r *warehouseRepository) Delete(ctx context.Context, tx *gorm.DB, warehouseId string) error {
	if tx == nil {
		tx = r.db
	}
	if err := tx.WithContext(ctx).Delete(&entities.MWarehouseEntity{}, "id = ?", warehouseId).Error; err != nil {
		return err
	}
	return nil
}