Import Slack bot_message type posts. (#4261)

This includes all messages from integrations, as far as I can tell.

Messages are "owned" by a special user that is deactivated once the
import completes.

Override User Names are only shown where the individual Slack posts have
a username override in them. Ones set centrally through the Slack Web
Hooks administration, or by Slack-official integrations, aren't known so
we can't set them on the imported posts. Same for icons.

The attachment "colors" aren't imported as Mattermost does not appear to
have any equivalent feature.

Fixes PLT-48

1 files changed, 20 insertions, 0 deletions

diff --git a/i18n/en.json b/i18n/en.json
index bb4b61168..fe7de229e 100644
--- a/i18n/en.json
+++ b/i18n/en.json
@@ -1548,6 +1548,10 @@
     "translation": "Slack bot posts are not imported yet"
   },
   {
+    "id": "api.slackimport.slack_add_posts.bot_user_no_exists.warn",
+    "translation": "Slack Importer: Not importing bot message as the bot-importing user does not exist."
+  },
+  {
     "id": "api.slackimport.slack_add_posts.msg_no_comment.debug",
     "translation": "File comment undefined"
   },
@@ -1556,6 +1560,10 @@
     "translation": "Message without user"
   },
   {
+    "id": "api.slackimport.slack_add_posts.no_bot_id.warn",
+    "translation": "Slack Importer: Not importing bot message due to lack of BotId field."
+  },
+  {
     "id": "api.slackimport.slack_add_posts.unsupported.warn",
     "translation": "Unsupported post type: %v, %v"
   },
@@ -1600,6 +1608,14 @@
     "translation": "Unable to import user: {{.Username}}\r\n"
   },
   {
+    "id": "api.slackimport.slack_add_bot_user.email_pwd",
+    "translation": "Slack Bot/Integration Posts Import User: Email, Password: {{.Email}}, {{.Password}}\r\n"
+  },
+  {
+    "id": "api.slackimport.slack_add_bot_user.unable_import",
+    "translation": "Unable to import Slack Bot/Integration Posts Import User: {{.Username}}\r\n"
+  },
+  {
     "id": "api.slackimport.slack_convert_channel_mentions.compile_regexp_failed.warn",
     "translation": "Failed to compile the !channel matching regular expression for Slack channel {{.ChannelID}} {{.ChannelName}}"
   },
@@ -1612,6 +1628,10 @@
     "translation": "Failed to compile the @mention matching regular expression for Slack user {{.UserID}} {{.Username}}"
   },
   {
+    "id": "api.slackimport.slack_deactivate_bot_user.failed_to_deactivate",
+    "translation": "Slack Importer: Failed to deactivate the bot-importing user."
+  },
+  {
     "id": "api.slackimport.slack_import.log",
     "translation": "Mattermost Slack Import Log\r\n"
   },