func (s *InventoryService) UpdateInventory(m *model.Inventory) (int64, error) {
if m == nil {
panic("Inventory can't be null!")
}
// m.PrepareToUpdate() // prepare to update
return inventorydao.Update(m)
}
// If InvemtoryGroup has GroupId property, Update, else Create one.
// 注意：参数传进来的invneotries的库存信息存放在Stocks里面。而数据库中读取出来的库存信息放在.Stock中。
func (s *InventoryGroupService) SaveInventoryGroupByNGLIST(ig *model.InventoryGroup) (
*model.InventoryGroup, error) {
// var need_update_provider = false // if provider, sendTime, receiveTime changed.
// nil check
if nil == ig {
return nil, errors.New("InventoryGroup can't be nil!")
}
if ig.ProviderId <= 0 {
// return nil, errors.New("Provider Id can't be nil!")
fmt.Printf("Provider Id can't be nil!\n")
}
// update summary and total quantity.
ig.Summary, ig.TotalQuantity = _makeSummary(ig.Inventories)
if ig.Id <= 0 {
// create inventory group, make new id.
var err error
if ig, err = inventorygroupdao.Create(ig); err != nil {
return nil, err
}
// TODO: save InventoryGroup to create GroupId.
} else {
// update inventory group
if _, err := inventorygroupdao.Update(ig); err != nil {
return nil, err
}
}
// assign basic properties into sub-inventories. Make summary and total quantity.
if nil != ig.Inventories {
for _, i := range ig.Inventories {
if i != nil {
i.GroupId = ig.Id
i.OperatorId = ig.OperatorId
i.SendTime = ig.SendTime
i.ReceiveTime = ig.ReceiveTime
i.Type = ig.Type
}
}
}
// 1. load inventory from database, used to compare details.
var (
// details of 3 situation
createGroup = []*model.Inventory{}
updateGroup = []*model.Inventory{}
deleteGroup = []*model.Inventory{}
oldStocks = map[int64]int{} // invId->stock
)
// load existing inventories. invs is inventories in db.
invs, e := inventorydao.List(db.NewQueryParser().Where(inventory.FGroupId, ig.Id))
if e != nil {
return nil, e
}
if invs == nil || len(invs) == 0 {
// DB中无信息，全部存入createGroup！
// createGroup = invs // 格式不对怎办？ 这里有问题，使用Clone方法；
for _, i := range ig.Inventories {
if nil != i.Stocks {
for color, sizemap := range i.Stocks {
if sizemap != nil {
for size, stock := range sizemap {
if stock > 0 {
createGroup = append(createGroup, _cloneInentory(i, color, size, stock))
}
}
}
}
}
}
} else {
var deleteWhoIsFalse = make([]bool, len(invs))
if ig.Inventories != nil {
// Loop Level 1: inv, color, size, stock
for _, inv := range ig.Inventories {
if nil != inv && inv.Stocks != nil {
for color, sizemap := range inv.Stocks {
if sizemap != nil {
for size, stock := range sizemap {
// Loop Level 2: inv2 is inventory in db.
var find = false
for idx2, inv2 := range invs {
// match
if inv2.ProductId == inv.ProductId &&
inv2.Color == color && inv2.Size == size {
// assign database's matched id to post inv.
currentSubInv := _cloneInentory(inv, color, size, stock)
currentSubInv.Id = inv2.Id
// if any values changes(sotck, price or note),
// or if quantity/stock chagne to 0, delete it.
if stock != inv2.Stock || inv2.Price != currentSubInv.Price ||
inv2.Note != currentSubInv.Note {
//这里会有bug，导致丢失。修改信息；
if stock > 0 {
updateGroup = append(updateGroup, currentSubInv)
oldStocks[currentSubInv.Id] = inv2.Stock
}
}
find = true
if stock == 0 {
deleteWhoIsFalse[idx2] = false
} else {
deleteWhoIsFalse[idx2] = true
}
break
}
}
if !find {
newinv := _cloneInentory(inv, color, size, stock)
createGroup = append(createGroup, newinv)
}
}
}
}
}
}
}
// who will be deleted?
for idx, b := range deleteWhoIsFalse {
if !b {
inv := invs[idx]
deleteGroup = append(deleteGroup, inv)
oldStocks[inv.Id] = inv.Stock // cache old values
}
}
}
// --------------------------------------------------------------------------------
// fmt.Println(">>>> ig.Inventories and db invs:")
// if nil != ig.Inventories {
// for _, inv := range ig.Inventories {
// fmt.Println("\tig.inventories: ", inv, d.Color, d.Size, " = ", d.Quantity, d.SellingPrice)
// }
// }
// if nil != invs {
// for _, inv := range invs {
// fmt.Println("\torder details: ", inv.Id, inv.Color, inv.Size, " = ", inv.Stock, inv.Price)
// }
// }
// debug upgrade group::
// fmt.Println(">>>> ig.Inventories> upgrade groups: ")
// if updateGroup != nil {
// for _, d := range updateGroup {
// fmt.Println("\tig.inventories: ", d)
// fmt.Println("\t\t old stock: ", oldStocks[d.ProductId])
// fmt.Println("\t\t new stock: ", d.Stock)
// //d, d.Color, d.Size, " = ", d.Quantity, d.SellingPrice
// }
// }
// fmt.Println(">>>> who is false?")
// for idx, b := range deleteWhoIsFalse {
// fmt.Println("\t >> who is false: ", idx, b)
// }
// --------------------------------------------------------------------------------
// final process: create, update, and delete
if createGroup != nil {
for _, inv := range createGroup {
// create inventory item;
inv.ProviderId = ig.ProviderId // force set providerId.
if _, err := inventorydao.Create(inv); err != nil {
return nil, err
}
// increase left stock.
if oldStock, newStock, err := Stock.UpdateStockDelta(
inv.ProductId, inv.Color, inv.Size, inv.Stock); err != nil {
return nil, err
} else {
// TODO create new Track method to create track.
if _, err := InventoryTrack.Create(
&model.InventoryTrackItem{
ProductId: inv.ProductId,
Color: inv.Color,
Size: inv.Size,
StockChagneTo: newStock, // unknown
OldStock: oldStock, // unknown
Delta: inv.Stock, // delta is not calculated.
UserId: 0, // TODO
Reason: "新增入库",
Context: fmt.Sprint(ig.Id),
},
); err != nil {
return nil, err
}
}
}
}
fmt.Println(">>>> ig.Inventories> upgrade groups: ") // print debug info.
if updateGroup != nil {
for _, inv := range updateGroup {
// update
inv.ProviderId = ig.ProviderId // force set providerId.
if _, err := inventorydao.Update(inv); err != nil {
return nil, err
}
// increase stock = leftstock - inv.Stock// TODO... ehrererere
oldstock := oldStocks[inv.Id]
delta := inv.Stock - oldstock
// modify left stock
if oldStock, newStock, err := Stock.UpdateStockDelta(
inv.ProductId, inv.Color, inv.Size, delta); err != nil {
return nil, err
} else {
// TODO create new Track method to create track.
if _, err := InventoryTrack.Create(
&model.InventoryTrackItem{
ProductId: inv.ProductId,
Color: inv.Color,
Size: inv.Size,
StockChagneTo: newStock, // unknown
OldStock: oldStock, // unknown
Delta: delta, // delta is not calculated.
UserId: 0, // TODO
Reason: "修改入库",
Context: fmt.Sprint(ig.Id),
},
); err != nil {
return nil, err
}
}
}
}
fmt.Println(">>>> ig.Inventories> delete group: ") // print debug info.
if deleteGroup != nil {
for _, inv := range deleteGroup {
// delete inventory
if _, err := inventorydao.Delete(inv.Id); err != nil {
return nil, err
}
// decrease the stocks;
oldstock := oldStocks[inv.Id]
// modify left stock
if oldStock, newStock, err := Stock.UpdateStockDelta(
inv.ProductId, inv.Color, inv.Size, -oldstock); err != nil {
return nil, err
} else {
// TODO create new Track method to create track.
if _, err := InventoryTrack.Create(
&model.InventoryTrackItem{
ProductId: inv.ProductId,
Color: inv.Color,
Size: inv.Size,
StockChagneTo: newStock, // unknown
OldStock: oldStock, // unknown
Delta: -oldstock, // delta is not calculated.
UserId: 0, // TODO
Reason: "删除入库",
Context: fmt.Sprint(ig.Id),
},
); err != nil {
return nil, err
}
}
}
}
fmt.Println(">>>> ig.Inventories> UpdateAllInventoryItems: ") // print debug info.
// Add by gb @ 2016-04-29: set all sub-inventory item's send_time, update_time, and factory_id.
if err := inventorydao.UpdateAllInventoryItems(ig); err != nil {
fmt.Println("err: ", err)
panic(err)
}
fmt.Println(">>>> ig.Inventories> All Done; ") // print debug info.
return ig, nil
}