// Copyright 2009-2022 Josh Close
// This file is a part of CsvHelper and is dual licensed under MS-PL and Apache 2.0.
// See LICENSE.txt for details or visit http://www.opensource.org/licenses/ms-pl.html for MS-PL and http://opensource.org/licenses/Apache-2.0 for Apache 2.0.
// https://github.com/JoshClose/CsvHelper
using CsvHelper.Delegates;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;

namespace CsvHelper.Configuration
{
	/// <summary>
	/// Configuration used for the <see cref="IParser"/>.
	/// </summary>
	public interface IParserConfiguration
	{
		/// <summary>
		/// Gets the culture info used to read an write CSV files.
		/// </summary>
		CultureInfo CultureInfo { get; }

		/// <summary>
		/// Cache fields that are created when parsing.
		/// Default is false.
		/// </summary>
		bool CacheFields { get; }

		/// <summary>
		/// The newline string to use. Default is \r\n (CRLF).
		/// When writing, this value is always used.
		/// When reading, this value is only used if explicitly set.
		/// If not set, the parser uses one of \r\n, \r, or \n.
		/// </summary>
		string NewLine { get; }

		/// <summary>
		/// A value indicating if <see cref="NewLine"/> was set.
		/// </summary>
		/// <value>
		///   <c>true</c> if <see cref="NewLine"/> was set. <c>false</c> if <see cref="NewLine"/> is the default.
		/// </value>
		bool IsNewLineSet { get; }

		/// <summary>
		/// The mode.
		/// See <see cref="CsvMode"/> for more details.
		/// </summary>
		CsvMode Mode { get; }

		/// <summary>
		/// Gets the size of the buffer
		/// used for parsing and writing CSV files.
		/// Default is 0x1000.
		/// </summary>
		int BufferSize { get; }

		/// <summary>
		/// The size of the buffer used when processing fields.
		/// Default is 1024.
		/// </summary>
		int ProcessFieldBufferSize { get; }

		/// <summary>
		/// Gets a value indicating whether the number of bytes should
		/// be counted while parsing. Default is false. This will slow down parsing
		/// because it needs to get the byte count of every char for the given encoding.
		/// The <see cref="Encoding"/> needs to be set correctly for this to be accurate.
		/// </summary>
		bool CountBytes { get; }

		/// <summary>
		/// Gets the encoding used when counting bytes.
		/// </summary>
		Encoding Encoding { get; }

		/// <summary>
		/// Gets the function that is called when bad field data is found. A field
		/// has bad data if it contains a quote and the field is not quoted (escaped).
		/// You can supply your own function to do other things like logging the issue
		/// instead of throwing an exception.
		/// </summary>
		BadDataFound BadDataFound { get; }

		/// <summary>
		/// Gets or sets the maximum size of a field.
		/// Defaults to 0, indicating maximum field size is not checked.
		/// </summary>
		double MaxFieldSize { get; }

		/// <summary>
		/// Gets a value indicating if a line break found in a quote field should
		/// be considered bad data. <c>true</c> to consider a line break bad data, otherwise <c>false</c>.
		/// Defaults to false.
		/// </summary>
		bool LineBreakInQuotedFieldIsBadData { get; }

		/// <summary>
		/// Gets the character used to denote
		/// a line that is commented out. Default is '#'.
		/// </summary>
		char Comment { get; }

		/// <summary>
		/// Gets a value indicating if comments are allowed.
		/// <c>true</c> to allow commented out lines, otherwise <c>false</c>.
		/// </summary>
		bool AllowComments { get; }

		/// <summary>
		/// Gets a value indicating if blank lines
		/// should be ignored when reading.
		/// <c>true</c> to ignore, otherwise <c>false</c>. Default is true.
		/// </summary>
		bool IgnoreBlankLines { get; }

		/// <summary>
		/// Gets the character used to quote fields.
		/// Default is '"'.
		/// </summary>
		char Quote { get; }

		/// <summary>
		/// The delimiter used to separate fields.
		/// Default is <see cref="TextInfo.ListSeparator"/>.
		/// </summary>
		string Delimiter { get; }

		/// <summary>
		/// Detect the delimiter instead of using the delimiter from configuration.
		/// Default is <c>false</c>.
		/// </summary>
		bool DetectDelimiter { get; }

		/// <summary>
		/// Gets the function that is called when <see cref="DetectDelimiter"/> is enabled.
		/// </summary>
		GetDelimiter GetDelimiter { get; }

		/// <summary>
		/// The possible delimiter values used when detecting the delimiter.
		/// Default is [",", ";", "|", "\t"].
		/// </summary>
		string[] DetectDelimiterValues { get; }

		/// <summary>
		/// The character used to escape characters.
		/// Default is '"'.
		/// </summary>
		char Escape { get; }

		/// <summary>
		/// Gets the field trimming options.
		/// </summary>
		TrimOptions TrimOptions { get; }

		/// <summary>
		/// Characters considered whitespace.
		/// Used when trimming fields.
		/// Default is [' '].
		/// </summary>
		char[] WhiteSpaceChars { get; }

		/// <summary>
		/// A value indicating if exception messages contain raw CSV data.
		/// <c>true</c> if exception contain raw CSV data, otherwise <c>false</c>.
		/// Default is <c>true</c>.
		/// </summary>
		bool ExceptionMessagesContainRawData { get; }

		/// <summary>
		/// Validates the configuration.
		/// </summary>
		void Validate();
	}
}