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CSV import with DataController working now
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...odeproj/project.xcworkspace/xcuserdata/D032610.xcuserdatad/UserInterfaceState.xcuserstate
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| // | ||
| // DataController.swift | ||
| // CookingFam | ||
| // | ||
| // Created by Alexis on 24.05.23. | ||
| // | ||
|
|
||
| import Foundation | ||
| import CoreData | ||
|
|
||
| class DataController : ObservableObject{ | ||
| let container = NSPersistentContainer(name: "Model") | ||
|
|
||
| init(){ | ||
| container.loadPersistentStores{ _, error in | ||
| if let error = error{ | ||
| print("CoreData Error:\(error.localizedDescription)") | ||
| return | ||
| } | ||
| self.container.viewContext.mergePolicy = NSMergePolicy.mergeByPropertyStoreTrump | ||
| } | ||
| } | ||
|
|
||
| func importCSV(){ | ||
| //CSV structure: id,title,ingredients,directions,link,source,NER | ||
|
|
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| guard let path = Bundle.main.path(forResource: "Recipe", ofType: "csv") else { | ||
| print("CSV not found") | ||
| return | ||
| } | ||
|
|
||
| do{ | ||
| let url = URL(fileURLWithPath: path) | ||
| let data = try Data(contentsOf: url) | ||
| let csvString = String(data: data, encoding: .utf8) | ||
| let rows = csvString?.components(separatedBy: "\n") | ||
|
|
||
|
|
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| if let rows = rows { | ||
| for row in rows { | ||
| // seperade data from nested data , e.g. A,[X,Y,Z],B,C | ||
| var nested = false | ||
| var field = "" | ||
| var data_columns: [String] = [] | ||
| if row.contains(","){ | ||
| for c in row { | ||
| if c == "[" || c == "]" { | ||
| nested.toggle() | ||
| }else if c == "," && !nested { | ||
| data_columns.append(field) | ||
| field = "" | ||
| }else{ | ||
| field.append(c) | ||
| } | ||
| } | ||
| if !field.isEmpty { | ||
| data_columns.append(field) | ||
| } | ||
| } | ||
| if data_columns != []{ | ||
| if let newRecipe = NSEntityDescription.insertNewObject(forEntityName: "Recipe", into: container.viewContext) as? Recipe { | ||
| newRecipe.name = data_columns[1] | ||
| let ingredients = data_columns[2].components(separatedBy: ",") | ||
| ingredients.forEach{ingredient in | ||
| if let newIngredient = NSEntityDescription.insertNewObject(forEntityName: "Ingredient", into: container.viewContext) as? Ingredient { | ||
| newIngredient.name = ingredient | ||
| newIngredient.recipe = newRecipe | ||
| newIngredient.recipe?.name = data_columns[1] | ||
| } | ||
| } | ||
| let directions = data_columns[3].components(separatedBy: ",") | ||
| directions.forEach{direction in | ||
| if let newDirection = NSEntityDescription.insertNewObject(forEntityName: "Direction", into: container.viewContext) as? Direction { | ||
| newDirection.text = direction | ||
| newDirection.recipe = newRecipe | ||
| newDirection.recipe?.name = data_columns[1] | ||
| } | ||
| } | ||
| let components = data_columns[6].components(separatedBy: ",") | ||
| components.forEach{component in | ||
| if let newComponent = NSEntityDescription.insertNewObject(forEntityName: "Component", into: container.viewContext) as? Component { | ||
| newComponent.name = component | ||
| newComponent.recipe = newRecipe | ||
| newComponent.recipe?.name = data_columns[1] | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
||
| } | ||
| } | ||
| try container.viewContext.save() | ||
| } catch { | ||
| print("Error while importing CSV: \(error)") | ||
| } | ||
| } | ||
|
|
||
| func deleteAll() { | ||
| let fetchRequest1: NSFetchRequest<NSFetchRequestResult> = Recipe.fetchRequest() | ||
| let batchDeleteRequest1 = NSBatchDeleteRequest(fetchRequest: fetchRequest1) | ||
| _ = try? container.viewContext.execute(batchDeleteRequest1) | ||
|
|
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| let fetchRequest2: NSFetchRequest<NSFetchRequestResult> = Ingredient.fetchRequest() | ||
| let batchDeleteRequest2 = NSBatchDeleteRequest(fetchRequest: fetchRequest2) | ||
| _ = try? container.viewContext.execute(batchDeleteRequest2) | ||
|
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| let fetchRequest3: NSFetchRequest<NSFetchRequestResult> = Direction.fetchRequest() | ||
| let batchDeleteRequest3 = NSBatchDeleteRequest(fetchRequest: fetchRequest3) | ||
| _ = try? container.viewContext.execute(batchDeleteRequest3) | ||
|
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| let fetchRequest4: NSFetchRequest<NSFetchRequestResult> = Component.fetchRequest() | ||
| let batchDeleteRequest4 = NSBatchDeleteRequest(fetchRequest: fetchRequest4) | ||
| _ = try? container.viewContext.execute(batchDeleteRequest4) | ||
| } | ||
|
|
||
| } |
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