const Warehouse = require('./warehouseModel')
const AppError = require('../../globalErrorHandler/AppError')

const createWarehouse = async (data) => {
    const warehouse = await Warehouse.create({
        name: data.name,
        code: data.code || undefined,
        location: data.location,
        manager: data.manager,
        description: data.description,
    })
    return warehouse
}

const listWarehouses = async (query = {}) => {
    const filter = {}
    if (query.isActive !== undefined) filter.isActive = query.isActive === 'true'
    if (query.search) {
        filter.$or = [
            { name: { $regex: query.search, $options: 'i' } },
            { code: { $regex: query.search, $options: 'i' } },
        ]
    }

    const warehouses = await Warehouse.find(filter)
        .populate('manager', 'name email')
        .sort({ createdAt: -1 })

    return warehouses
}

const getWarehouse = async (warehouseId) => {
    const warehouse = await Warehouse.findById(warehouseId).populate('manager', 'name email')
    if (!warehouse) throw new AppError('انبار یافت نشد', 404, {})
    return warehouse
}

const updateWarehouse = async (warehouseId, data) => {
    const allowed = ['name', 'code', 'location', 'manager', 'description', 'isActive']
    const update = {}
    allowed.forEach((field) => {
        if (data[field] !== undefined) update[field] = data[field]
    })

    const warehouse = await Warehouse.findByIdAndUpdate(warehouseId, update, { new: true, runValidators: true })
    if (!warehouse) throw new AppError('انبار یافت نشد', 404, {})
    return warehouse
}

const deleteWarehouse = async (warehouseId) => {
    const warehouse = await Warehouse.findByIdAndUpdate(warehouseId, { isActive: false }, { new: true })
    if (!warehouse) throw new AppError('انبار یافت نشد', 404, {})
    return warehouse
}

module.exports = {
    createWarehouse,
    listWarehouses,
    getWarehouse,
    updateWarehouse,
    deleteWarehouse,
}