Generator/Sources/NeedleFramework/Generating/Serializers/DependencyProviderInitBodySerializer.swift

//
//  Copyright (c) 2018. Uber Technologies
//
//  Licensed under the Apache License, Version 2.0 (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  http://www.apache.org/licenses/LICENSE-2.0
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

import Foundation

/// A serializer that produces the initializer body code for the dependency
/// provider.
class DependencyProviderBaseInitSerializer: Serializer {

    /// Initializer.
    ///
    /// - parameter provider: The provider to generate initializer body
    /// source code for.
    init(provider: ProcessedDependencyProvider) {
        self.provider = provider
    }

    /// Serialize the data model and produce the initializer body code.
    ///
    /// - returns: The initializer body source code.
    func serialize() -> String {
        let arguments = provider.levelMap
            .sorted(by: { $0.key < $1.key })
            .map { (componentType: String, level: Int) in
                return "\(componentType.lowercasedFirstChar()): \(componentType)"
        }
        .joined(separator: ", ")
        let body = provider.levelMap
            .sorted(by: { $0.key < $1.key })
            .map { (componentType: String, level: Int) in
            return "        self.\(componentType.lowercasedFirstChar()) = \(componentType.lowercasedFirstChar())"
        }
        .joined(separator: "\n")
        return """
    init(\(arguments)) {
\(body)
    }
"""
    }

    // MARK: - Private

    private let provider: ProcessedDependencyProvider
}