import Foundation
import JSONUtilities
import XcodeProj

extension XCScheme.EnvironmentVariable: JSONObjectConvertible {
    public static let enabledDefault = true

    private static func parseValue(_ value: Any) -> String {
        if let bool = value as? Bool {
            return bool ? "YES" : "NO"
        } else {
            return String(describing: value)
        }
    }

    public init(jsonDictionary: JSONDictionary) throws {

        let value: String
        if let jsonValue = jsonDictionary["value"] {
            value = XCScheme.EnvironmentVariable.parseValue(jsonValue)
        } else {
            // will throw error
            value = try jsonDictionary.json(atKeyPath: "value")
        }
        let variable: String = try jsonDictionary.json(atKeyPath: "variable")
        let enabled: Bool = jsonDictionary.json(atKeyPath: "isEnabled") ?? XCScheme.EnvironmentVariable.enabledDefault
        self.init(variable: variable, value: value, enabled: enabled)
    }

    static func parseAll(jsonDictionary: JSONDictionary) throws -> [XCScheme.EnvironmentVariable] {
        if let variablesDictionary: [String: Any] = jsonDictionary.json(atKeyPath: "environmentVariables") {
            return variablesDictionary.mapValues(parseValue)
                .map { XCScheme.EnvironmentVariable(variable: $0.key, value: $0.value, enabled: true) }
                .sorted { $0.variable < $1.variable }
        } else if let variablesArray: [JSONDictionary] = jsonDictionary.json(atKeyPath: "environmentVariables") {
            return try variablesArray.map(XCScheme.EnvironmentVariable.init)
        } else {
            return []
        }
    }
}

extension XCScheme.EnvironmentVariable: JSONEncodable {
    public func toJSONValue() -> Any {
        var dict: [String: Any] = [
            "variable": variable,
            "value": value,
        ]

        if enabled != XCScheme.EnvironmentVariable.enabledDefault {
            dict["isEnabled"] = enabled
        }

        return dict
    }
}