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using Apewer;
using Apewer.Internals;
using Apewer.Source;
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
namespace Apewer.Network
{
/// <summary>邮件。</summary>
public sealed class MailMessage : IToJson
{
private MailAddress _sender = null;
private List<MailAddress> _receiver = new List<MailAddress>();
private List<MailAddress> _carboncopy = new List<MailAddress>();
private List<MailAddress> _blindcarboncopy = new List<MailAddress>();
private Dictionary<string, byte[]> _attachment = new Dictionary<string, byte[]>();
private string _title = Constant.EmptyString;
private string _content = Constant.EmptyString;
private Encoding _encoding = Encoding.UTF8;
private bool _html = false;
private MailPriority _priority = MailPriority.Normal;
/// <summary>构造函数。</summary>
public MailMessage() { }
/// <summary>编码,默认为 UTF-8。</summary>
public Encoding Encoding { get { return _encoding; } set { _encoding = value ?? Encoding.UTF8; } }
/// <summary>附件。</summary>
public Dictionary<string, byte[]> Attachment { get { return _attachment; } }
/// <summary>发件人。</summary>
public MailAddress Sender { get { return _sender; } set { _sender = value ?? new MailAddress(); } }
/// <summary>收件人。</summary>
public List<MailAddress> Receiver { get { return _receiver; } }
/// <summary>抄送。</summary>
public List<MailAddress> CarbonCopy { get { return _carboncopy; } }
/// <summary>密送。</summary>
public List<MailAddress> BlindCarbonCopy { get { return _blindcarboncopy; } }
/// <summary>主题/标题。</summary>
public string Title { get { return _title; } set { _title = TextUtility.Trim(value, true); } }
/// <summary>正文/内容。</summary>
public string Content { get { return _content; } set { _content = value ?? Constant.EmptyString; } }
/// <summary>使用 HTML 格式,默认为 FALSE 值。</summary>
public bool Html { get { return _html; } set { _html = value; } }
/// <summary>优先级。</summary>
public MailPriority Priority { get { return _priority; } set { _priority = value; } }
/// <summary>获取 JSON 文本。</summary>
public override string ToString()
{
return ToJson().ToString();
}
/// <summary>获取 JSON 对象。</summary>
public Json ToJson()
{
var json = Json.NewObject();
json["Priority"] = Priority.ToString();
json["Encoding"] = Encoding.ToString();
json["Title"] = Title;
json["Content"] = Content;
json["Html"] = Html.ToString();
json.SetProperty("Sender", Json.From(Sender));
var receiver = Json.NewArray();
foreach (var account in _receiver) receiver.AddItem(Json.From(account));
json.SetProperty("Receiver", receiver);
var cc = Json.NewArray();
foreach (var account in _carboncopy) receiver.AddItem(Json.From(account));
json.SetProperty("CarbonCopy", cc);
var bcc = Json.NewArray();
foreach (var account in _blindcarboncopy) receiver.AddItem(Json.From(account));
json.SetProperty("BlindCarbonCopy", bcc);
var attachment = Json.NewArray();
foreach (var kvp in _attachment)
{
var item = Json.NewObject();
item["Name"] = TextUtility.Trim(kvp.Key);
item["Base64"] = BytesUtility.ToBase64(kvp.Value);
attachment.AddItem(item);
}
json.SetProperty("Attachment", attachment);
return json;
}
internal System.Net.Mail.MailMessage ToInstance()
{
var mm = new System.Net.Mail.MailMessage();
#if !NET20
mm.HeadersEncoding = _encoding;
#endif
mm.SubjectEncoding = _encoding;
mm.BodyEncoding = _encoding;
if (_sender != null)
{
var ma = _sender.ToInstance(_encoding);
if (ma != null) mm.From = ma;
}
foreach (var account in _receiver)
{
if (account == null) continue;
var ma = account.ToInstance(_encoding);
if (ma != null) mm.To.Add(ma);
}
foreach (var account in _carboncopy)
{
if (account == null) continue;
var ma = account.ToInstance(_encoding);
if (ma != null) mm.CC.Add(ma);
}
foreach (var account in _blindcarboncopy)
{
if (account == null) continue;
var ma = account.ToInstance(_encoding);
if (ma != null) mm.Bcc.Add(ma);
}
foreach (var attachment in _attachment)
{
var a = GetAttachment(attachment.Key, attachment.Value, _encoding);
mm.Attachments.Add(a);
}
mm.Subject = _title;
mm.Body = _content;
mm.IsBodyHtml = _html;
return mm;
}
private static System.Net.Mail.Attachment GetAttachment(string name, byte[] bytes, Encoding encoding)
{
if (TextUtility.IsBlank(name)) return null;
var data = bytes;
var memory = new MemoryStream();
if (data != null)
{
if (data.Length > 0) memory.Write((byte[])data);
}
memory.ResetPosition();
var attachment = new System.Net.Mail.Attachment(memory, TextUtility.Trim(name));
attachment.NameEncoding = encoding;
return attachment;
}
}
}