import Foundation

// MARK: - Logger event type
enum LoggerEventType: String {
  case error = "[ERROR]"
  case info = "[INFO]"
  case debug = "[DEBUG]"
  case verbose = "[VERBOSE]"
  case warning = "[WARNING]"
  case severe = "[SEVERE]"
}

final class Logger {

  // MARK: - Properties
  private static var isLoggingEnabled: Bool {
    #if DEVELOP
    return true
    #else
    return false
    #endif
  }

  private static var loggerInfo: String {
    let formatter = DateFormatter()
    formatter.dateFormat = "yyyy-MM-dd hh:mm:ssSSS"
    formatter.locale = .current
    formatter.timeZone = .current
    return "[LOGGER] \(formatter.string(from: Date()))"
  }

  // MARK: - Methods
  /// Extract the file name from the file path.
  ///
  /// - Parameter filePath: Full file path in bundle.
  /// - Returns: File Name with extension.
  private class func sourceFileName(filePath: String) -> String {
    let components = filePath.components(separatedBy: "/")
    return components.isEmpty ? "" : components.last!
  }

  /// Logs error messages on console with prefix.
  ///
  /// - Parameters:
  ///   - object: Object or message to be logged.
  ///   - filename: File name from where log to be done.
  ///   - line: Line number in file from where the logging is done.
  ///   - column: Column number of the log message.
  ///   - funcName: Name of the function from where the logging is done.
  class func error( _ object: Any, filename: String = #file, line: Int = #line, column: Int = #column, funcName: String = #function) {
    if isLoggingEnabled {
      print("\(loggerInfo) \(LoggerEventType.error.rawValue) [\(sourceFileName(filePath: filename))]: {\(line), \(column)} \(funcName) -> \(object)")
    }
  }

  /// Logs info messages on console with prefix.
  ///
  /// - Parameters:
  ///   - object: Object or message to be logged.
  ///   - filename: File name from where log to be done.
  ///   - line: Line number in file from where the logging is done.
  ///   - column: Column number of the log message.
  ///   - funcName: Name of the function from where the logging is done.
  class func info( _ object: Any, filename: String = #file, line: Int = #line, column: Int = #column, funcName: String = #function) {
    if isLoggingEnabled {
      print("\(loggerInfo) \(LoggerEventType.info.rawValue) [\(sourceFileName(filePath: filename))]: {\(line), \(column)} \(funcName) -> \(object)")
    }
  }

  /// Logs debug messages on console with prefix.
  ///
  /// - Parameters:
  ///   - object: Object or message to be logged.
  ///   - filename: File name from where log to be done.
  ///   - line: Line number in file from where the logging is done.
  ///   - column: Column number of the log message.
  ///   - funcName: Name of the function from where the logging is done.
  class func debug( _ object: Any, filename: String = #file, line: Int = #line, column: Int = #column, funcName: String = #function) {
    if isLoggingEnabled {
      print("\(loggerInfo) \(LoggerEventType.debug.rawValue) [\(sourceFileName(filePath: filename))]: {\(line), \(column)} \(funcName) -> \(object)")
    }
  }

  /// Logs messages verbosely on console with prefix.
  ///
  /// - Parameters:
  ///   - object: Object or message to be logged.
  ///   - filename: File name from where log to be done.
  ///   - line: Line number in file from where the logging is done.
  ///   - column: Column number of the log message.
  ///   - funcName: Name of the function from where the logging is done.
  class func verbose( _ object: Any, filename: String = #file, line: Int = #line, column: Int = #column, funcName: String = #function) {
    if isLoggingEnabled {
      print("\(loggerInfo) \(LoggerEventType.verbose.rawValue) [\(sourceFileName(filePath: filename))]: {\(line), \(column)} \(funcName) -> \(object)")
    }
  }

  /// Logs warnings verbosely on console with prefix.
  ///
  /// - Parameters:
  ///   - object: Object or message to be logged.
  ///   - filename: File name from where log to be done.
  ///   - line: Line number in file from where the logging is done.
  ///   - column: Column number of the log message.
  ///   - funcName: Name of the function from where the logging is done.
  class func warning( _ object: Any, filename: String = #file, line: Int = #line, column: Int = #column, funcName: String = #function) {
    if isLoggingEnabled {
      print("\(loggerInfo) \(LoggerEventType.warning.rawValue) [\(sourceFileName(filePath: filename))]: {\(line), \(column)} \(funcName) -> \(object)")
    }
  }

  /// Logs severe events on console with prefix.
  ///
  /// - Parameters:
  ///   - object: Object or message to be logged.
  ///   - filename: File name from where log to be done.
  ///   - line: Line number in file from where the logging is done.
  ///   - column: Column number of the log message.
  ///   - funcName: Name of the function from where the logging is done.
  class func severe( _ object: Any, filename: String = #file, line: Int = #line, column: Int = #column, funcName: String = #function) {
    if isLoggingEnabled {
      print("\(loggerInfo) \(LoggerEventType.severe.rawValue) [\(sourceFileName(filePath: filename))]: {\(line), \(column)} \(funcName) -> \(object)")
    }
  }
}