Spoonacular

Spoonacular iOS app repository using the free API provided by Spoonacular, you can refer to the Documentation

Defining the Programming Standard

Commit Message Header

<type>(<scope>): <summary>

The type and summary fields are mandatory, the scope field is optional.

Type

Must be one of the following:

• build: Changes that affect the build system or external dependencies.
• ci: Change to out CI configuration field and scripts.
• chore: Maintain code.
• docs: Documentation only changes.
• feat: A new feature.
• perf: A code change that improves performance.
• refactor: A code changes that neither fixed a bug nor adds a feature.
• test: Adding missing tests or correcting existing tests.
• style: Fix a style, formatting, no code change.

Scope

The scope should be the name of module or scene, for example: (feature-flag), (item-add-scene)

• module-name: When the work is in models, repositories or workers.
• scene-name: When the work is in view controllers, presenters, view models, data providers or custom views.

Summary

Use the summary field to provide succinct description of the change.

• Use the imperative present tense: change not changed nor changes
• Don't capitalize the first letter
• No dot(.) at the end

Architecture

Table of contents

Data

• Entities
• Models
• Kinds
• Types

Data Access

• Repositories
• Data Mappings

Business Logic

• Workers
• Interactors

Presentation

• Presenter
• View Models
• Data Providers
• Factories

User Interface

• Custom Views
• Controllers
• Views

Router

• Route
• Route Handler
• Scene Factory

Swift Style

Goals

• Make it easier to read and begin understanding unfamiliar code.
• Make code easier to maintain.
• Reduce simple programmer errors.
• Keep discussions on diffs focused on the code's logic rather than its style.

Table of contents

• Delegates
• Protocol Conformance
• Minimal Import
• Final
• Spacing

👉 Delegates

When creating custom delegates methods, an unnamed first parameter should be the delegate source.

🟢 Preferred

func inputView(_ inputView: InputView, textDidChange text: String?)
func inputViewShouldReload(_ inputView: InputView) -> Bool

🔴 Not Preferred

func didTextChange(inputView: InputView, text: String?)
func inputViewShouldReload() -> Bool

👉 Protocol Conformance

Protocol Conformance should be performed in a separated extension.

🟢 Preferred

struct MyModel {
    ...
}

// MARK: - Equatable 

extension MyModel: Equatable { }

// MARK: - Codable

extension MyModel: Codable { 
    ...
}

🔴 Not Preferred

struct MyModel: Codable, Equatable {
    ...
}

👉 Minimal Import

Only the modules necessary for the source file should be imported. All source files should import Foundation, but don't import Foundation when import UIKit.

🟢 Preferred

import UIKit

var view = UIView()
var prices: [Double] = []

🟢 Preferred

import Foundation

var prices: [Double] = []

🔴 Not Preferred

import Foundation
import UIKit

var view = UIView()
var prices: [Double] = []

🔴 Not Preferred

import UIKit

var prices: [Double] = []

👉 Final

All default classes should be final and only in specific cases where inheritance is need should the keyword be removed.

🟢 Preferred

final class MyClass { ... }

👉 Spacing

• The source code must be indented with 4 spaces.
• Method braces and other braces (if / else / swift / while) always open on the same line as the statement but close on a new line.

🟢 Preferred

if user.isEnable {
    ...
} else {
    ...
}

🔴 Not Preferred

if user.isEnable
{
    ...
}
else 
{
    ...
}

• The case statement must not be indented.

🟢 Preferred

switch myKind {
case .optionA:
    ...

case .optionB:
    ...
}

🔴 Not Preferred

switch myKind {
    case .optionA:
        ...

    case .optionB:
        ...
}

• There should be a blank line between the type declaration to maintain a visual aid.

• Whitespace should be used in the methods to group functionalities.

• There should be no blank line after opening a brace or before closing a brace.

• Colons should not have a space on the left and should have a space on the right.

• Avoid trailing whitespaces at the ends of lines.

• These options should be enabled in Xcode.