mailcatcher/lib/mail_catcher/mail.rb

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require 'active_support/json'
require 'mail'
require 'sqlite3'
require 'eventmachine'
module MailCatcher::Mail extend self
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def db
@__db ||= begin
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SQLite3::Database.new(':memory:', :type_translation => true).tap do |db|
db.execute(<<-SQL)
CREATE TABLE message (
id INTEGER PRIMARY KEY ASC,
sender TEXT,
recipients TEXT,
subject TEXT,
source BLOB,
size TEXT,
type TEXT,
created_at DATETIME DEFAULT CURRENT_DATETIME
)
SQL
db.execute(<<-SQL)
CREATE TABLE message_part (
id INTEGER PRIMARY KEY ASC,
message_id INTEGER NOT NULL,
cid TEXT,
type TEXT,
is_attachment INTEGER,
filename TEXT,
charset TEXT,
body BLOB,
size INTEGER,
created_at DATETIME DEFAULT CURRENT_DATETIME
)
SQL
end
end
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end
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def add_message(message)
@add_message_query ||= db.prepare("INSERT INTO message (sender, recipients, subject, source, type, size, created_at) VALUES (?, ?, ?, ?, ?, ?, datetime('now'))")
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mail = Mail.new(message[:source])
@add_message_query.execute(message[:sender], message[:recipients].to_json, mail.subject, message[:source], mail.mime_type || 'text/plain', message[:source].length)
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message_id = db.last_insert_row_id
parts = mail.all_parts
parts = [mail] if parts.empty?
parts.each do |part|
body = part.body.to_s
# Only parts have CIDs, not mail
cid = part.cid if part.respond_to? :cid
add_message_part(message_id, cid, part.mime_type || 'text/plain', part.attachment? ? 1 : 0, part.filename, part.charset, body, body.length)
end
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EventMachine.next_tick do
message = MailCatcher::Mail.message message_id
MailCatcher::Events::MessageAdded.push message
end
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end
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def add_message_part(*args)
@add_message_part_query ||= db.prepare "INSERT INTO message_part (message_id, cid, type, is_attachment, filename, charset, body, size, created_at) VALUES (?, ?, ?, ?, ?, ?, ?, ?, datetime('now'))"
@add_message_part_query.execute(*args)
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end
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def latest_created_at
@latest_created_at_query ||= db.prepare "SELECT created_at FROM message ORDER BY created_at DESC LIMIT 1"
@latest_created_at_query.execute.next
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end
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def messages
@messages_query ||= db.prepare "SELECT id, sender, recipients, subject, size, created_at FROM message ORDER BY created_at ASC"
@messages_query.execute.map do |row|
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Hash[row.fields.zip(row)].tap do |message|
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message["recipients"] &&= ActiveSupport::JSON.decode message["recipients"]
end
end
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end
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def message(id)
@message_query ||= db.prepare "SELECT * FROM message WHERE id = ? LIMIT 1"
row = @message_query.execute(id).next
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row && Hash[row.fields.zip(row)].tap do |message|
message["recipients"] &&= ActiveSupport::JSON.decode message["recipients"]
end
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end
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def message_has_html?(id)
@message_has_html_query ||= db.prepare "SELECT 1 FROM message_part WHERE message_id = ? AND is_attachment = 0 AND type IN ('application/xhtml+xml', 'text/html') LIMIT 1"
(!!@message_has_html_query.execute(id).next) || ['text/html', 'application/xhtml+xml'].include?(message(id)["type"])
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end
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def message_has_plain?(id)
@message_has_plain_query ||= db.prepare "SELECT 1 FROM message_part WHERE message_id = ? AND is_attachment = 0 AND type = 'text/plain' LIMIT 1"
(!!@message_has_plain_query.execute(id).next) || message(id)["type"] == "text/plain"
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end
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def message_parts(id)
@message_parts_query ||= db.prepare "SELECT cid, type, filename, size FROM message_part WHERE message_id = ? ORDER BY filename ASC"
@message_parts_query.execute(id).map do |row|
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Hash[row.fields.zip(row)]
end
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end
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def message_attachments(id)
@message_parts_query ||= db.prepare "SELECT cid, type, filename, size FROM message_part WHERE message_id = ? AND is_attachment = 1 ORDER BY filename ASC"
@message_parts_query.execute(id).map do |row|
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Hash[row.fields.zip(row)]
end
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end
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def message_part(message_id, part_id)
@message_part_query ||= db.prepare "SELECT * FROM message_part WHERE message_id = ? AND id = ? LIMIT 1"
row = @message_part_query.execute(message_id, part_id).next
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row && Hash[row.fields.zip(row)]
end
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def message_part_type(message_id, part_type)
@message_part_type_query ||= db.prepare "SELECT * FROM message_part WHERE message_id = ? AND type = ? AND is_attachment = 0 LIMIT 1"
row = @message_part_type_query.execute(message_id, part_type).next
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row && Hash[row.fields.zip(row)]
end
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def message_part_html(message_id)
part = message_part_type(message_id, "text/html")
part ||= message_part_type(message_id, "application/xhtml+xml")
part ||= begin
message = message(message_id)
message if message.present? and ['text/html', 'application/xhtml+xml'].include? message["type"]
end
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end
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def message_part_plain(message_id)
message_part_type message_id, "text/plain"
end
def message_part_cid(message_id, cid)
@message_part_cid_query ||= db.prepare 'SELECT * FROM message_part WHERE message_id = ?'
@message_part_cid_query.execute(message_id).map do |row|
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Hash[row.fields.zip(row)]
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end.find do |part|
part["cid"] == cid
end
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end
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def delete!
@delete_messages_query ||= db.prepare 'DELETE FROM message'
@delete_message_parts_query ||= db.prepare 'DELETE FROM message_part'
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@delete_messages_query.execute and
@delete_message_parts_query.execute
end
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def delete_message!(message_id)
@delete_messages_query ||= db.prepare 'DELETE FROM message WHERE id = ?'
@delete_message_parts_query ||= db.prepare 'DELETE FROM message_part WHERE message_id = ?'
@delete_messages_query.execute(message_id) and
@delete_message_parts_query.execute(message_id)
end
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end