From b0b304e58b964ef87c61a3b258b1b7a675e217f2 Mon Sep 17 00:00:00 2001
From: Zev Benjamin <zev@humbughq.com>
Date: Wed, 6 Feb 2013 11:14:00 -0500
Subject: [PATCH] Add a copy of our Trac integration (with example constants)
 to the API examples

(imported from commit 4e7bfaf92842ae0bb24c28ae1187d83ca5c44b0e)
---
 api/examples/humbug_trac.py | 129 ++++++++++++++++++++++++++++++++++++
 1 file changed, 129 insertions(+)
 create mode 100644 api/examples/humbug_trac.py

diff --git a/api/examples/humbug_trac.py b/api/examples/humbug_trac.py
new file mode 100644
index 0000000000..f5e15b5e1c
--- /dev/null
+++ b/api/examples/humbug_trac.py
@@ -0,0 +1,129 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Copyright © 2012 Humbug, Inc.
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+# THE SOFTWARE.
+
+
+# Humbug trac plugin -- sends humbugs when tickets change.
+#
+# Install by copying this file to the trac plugins/ subdirectory,
+# customizing the constants below this comment, and then adding
+# "humbug_trac" to the [components] section of the conf/trac.ini
+# file, like so:
+#
+# [components]
+# humbug_trac = enabled
+#
+# You may then need to restart trac (or restart Apache) for the bot
+# (or changes to the bot) to actually be loaded by trac.
+
+# Change these constants:
+HUMBUG_API_PATH = "/path/to/humbug/api"
+HUMBUG_SITE = "https://example.humbughq.com"
+HUMBUG_USER = "trac_user@example.com"
+HUMBUG_API_KEY = "0123456789abcdef0123456789abcdef"
+TRAC_BASE_TICKET_URL = "https://trac.example.com/ticket"
+
+
+from trac.core import Component, implements
+from trac.ticket import ITicketChangeListener
+import sys
+
+sys.path.append(HUMBUG_API_PATH)
+import humbug
+client = humbug.Client(
+    email=HUMBUG_USER,
+    site=HUMBUG_SITE,
+    api_key=HUMBUG_API_KEY)
+
+def markdown_ticket_url(ticket, heading="ticket"):
+    return "[%s #%s](%s/%s)" % (heading, ticket.id, TRAC_BASE_TICKET_URL, ticket.id)
+
+def markdown_block(desc):
+    return "\n\n>" + "\n> ".join(desc.split("\n")) + "\n"
+
+def truncate(string, length):
+    if len(string) <= length:
+        return string
+    return string[:length - 3] + "..."
+
+def trac_subject(ticket):
+    return truncate("#%s: %s" % (ticket.id, ticket.values.get("summary")), 60)
+
+def send_update(ticket, content):
+    client.send_message({
+            "type": "stream",
+            "to": "trac",
+            "content": content,
+            "subject": trac_subject(ticket)
+            })
+
+class HumbugPlugin(Component):
+    implements(ITicketChangeListener)
+
+    def ticket_created(self, ticket):
+        """Called when a ticket is created."""
+        content = "%s created %s in component **%s**, priority **%s**:\n" % \
+            (ticket.values.get("reporter"), markdown_ticket_url(ticket),
+             ticket.values.get("component"), ticket.values.get("priority"))
+        if ticket.values.get("description") != "":
+            content += "%s" % markdown_block(ticket.values.get("description"))
+        send_update(ticket, content)
+
+    def ticket_changed(self, ticket, comment, author, old_values):
+        """Called when a ticket is modified.
+
+        `old_values` is a dictionary containing the previous values of the
+        fields that have changed.
+        """
+        if not comment and set(old_values.keys()) <= set(["priority", "milestone",
+                                                          "cc", "keywords",
+                                                          "component"]):
+            # This is probably someone going through trac and updating
+            # the priorities; this can result in a lot of messages
+            # nobody wants to read, so don't send them without a comment.
+            return
+
+        content = "%s updated %s" % (author, markdown_ticket_url(ticket))
+        if comment:
+            content += ' with comment: %s\n\n' % (markdown_block(comment,))
+        else:
+            content += ":\n\n"
+        field_changes = []
+        for key in old_values.keys():
+            if key == "description":
+                content += '- Changed %s from %s to %s' % (key, markdown_block(old_values.get(key)),
+                                                           markdown_block(ticket.values.get(key)))
+            elif old_values.get(key) == "":
+                field_changes.append('%s: => **%s**' % (key, ticket.values.get(key)))
+            elif ticket.values.get(key) == "":
+                field_changes.append('%s: **%s** => ""' % (key, old_values.get(key)))
+            else:
+                field_changes.append('%s: **%s** => **%s**' % (key, old_values.get(key),
+                                                               ticket.values.get(key)))
+        content += ", ".join(field_changes)
+
+        send_update(ticket, content)
+
+    def ticket_deleted(self, ticket):
+        """Called when a ticket is deleted."""
+        content = "%s was deleted." % markdown_ticket_url(ticket, heading="Ticket")
+        send_update(ticket, content)