zulip/templates/zerver/api/integration-docs-guide.md

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# Documenting an integration
Every Zulip integration must be documented in
`zerver/webhooks/mywebhook/doc.md` (or
`templates/zerver/integrations/<integration_name>.md`, for non-webhook
integrations).
Usually, this involves a few steps:
* Add text explaining all of the steps required to setup the
integration, including what URLs to use, etc. See
[Writing guidelines](#writing-guidelines) for detailed writing guidelines.
Zulip's pre-defined Markdown macros can be used for some of these steps.
See [Markdown macros](#markdown-macros) for further details.
* Make sure you've added your integration to
`zerver/lib/integrations.py`; this results in your integration
appearing on the `/integrations` page.
* You'll need to add a SVG graphic
of your integration's logo under the
`static/images/integrations/logos/<name>.svg`, where `<name>` is the
name of the integration, all in lower case; you can usually find them in the
product branding or press page. Make sure to optimize the SVG graphic by
running `svgo -f path-to-file`.
If you cannot find a SVG graphic of the logo, please find and include a PNG
image of the logo instead.
* Finally, generate a message sent by the integration and take a
screenshot of the message to provide an example message in the
documentation. If your new integration is an incoming webhook
integration, you can generate such a message from your test
fixtures using `send_webhook_fixture_message`:
```
./manage.py send_webhook_fixture_message \
--fixture=zerver/webhooks/pingdom/fixtures/imap_down_to_up.json \
'--url=/api/v1/external/pingdom?stream=stream_name&api_key=api_key'
```
When generating the screenshot of a sample message, give your test
bot a nice name like "GitHub Bot", use the project's logo as the
bot's avatar, and take the screenshot showing the stream/topic bar
for the message, not just the message body.
## Markdown macros
**Macros** are elements in the format of `{!macro.md!}` that insert common
phrases and steps at the location of the macros. Macros help eliminate
repeated content in our documentation.
The source for macros is the Markdown files under
`templates/zerver/help/include` in the
[main Zulip server repository](https://github.com/zulip/zulip). If you find
multiple instances of particular content in the documentation, you can
always create a new macro by adding a new file to that folder.
Here are a few common macros used to document Zulip's integrations:
* `{!create-stream.md!}` macro - Recommends that users create a dedicated
stream for a given integration. Usually the first step in setting up an
integration or incoming webhook. For an example rendering, see **Step 1** of
[the docs for Zulip's GitHub integration][GitHub].
* `{!create-bot-construct-url.md!}` macro - Instructs users to create a bot
for a given integration and construct a webhook URL using the bot API key
and stream name. The URL is generated automatically for every incoming webhook
by using attributes in the [WebhookIntegration][1] class.
This macro is usually used right after `{!create-stream!}`. For an example
rendering, see **Step 2** of [the docs for Zulip's GitHub integration][GitHub].
**Note:** If special configuration is
required to set up the URL and you can't use this macro, be sure to use the
`{{ api_url }}` template variable, so that your integration
documentation will provide the correct URL for whatever server it is
deployed on. If special configuration is required to set the `SITE`
variable, you should document that too.
* `{!append-stream-name.md!}` macro - Recommends appending `&stream=stream_name`
to a URL in cases where supplying a stream name in the URL is optional.
Supplying a stream name is optional for most Zulip integrations. If you use
`{!create-bot-construct-url.md!}`, this macro need not be used.
* `{!append-topic.md!}` macro - Recommends appending `&topic=my_topic` to a URL
to supply a custom topic for webhook notification messages. Supplying a custom
topic is optional for most Zulip integrations. If you use
`{!create-bot-construct-url.md!}`, this macro need not be used.
* `{!congrats.md!}` macro - Inserts congratulatory lines signifying the
successful setup of a given integration. This macro is usually used at
the end of the documentation, right before the sample message screenshot.
For an example rendering, see the end of
[the docs for Zulip's GitHub integration][GitHub].
* `{!download-python-bindings.md!}` macro - Links to Zulip's
[API page](https://zulipchat.com/api/) to download and install Zulip's
API bindings. This macro is usually used in non-webhook integration docs under
`templates/zerver/integrations/<integration_name>.md`. For an example
rendering, see **Step 2** of
[the docs for Zulip's Codebase integration][codebase].
* `{!change-zulip-config-file.md!}` macro - Instructs users to create a bot and
specify said bot's credentials in the config file for a given non-webhook
integration. This macro is usually used in non-webhook integration docs under
`templates/zerver/integrations/<integration_name>.md`. For an example
rendering, see **Step 4** of
[the docs for Zulip's Codebase integration][codebase].
* `{!git-append-branches.md!}` and `{!git-webhook-url-with-branches.md!}` -
These two macros explain how to specify a list of branches in the webhook URL
to filter notifications in our Git-related webhooks. For an example rendering,
see the last paragraph of **Step 2** in
[the docs for Zulip's GitHub integration][GitHub].
* `{!webhook-url.md!}` - Used internally by `{!create-bot-construct-url.md!}`
to generate the webhook URL.
* `{!zulip-config.md!}` - Used internally by `{!change-zulip-config-file.md!}`
to specify the lines in the config file for a non-webhook integration.
* `{!webhook-url-with-bot-email.md!}` - Used in certain non-webhook integrations
to generate URLs of the form:
```
https://bot_email:bot_api_key@yourZulipDomain.zulipchat.com/api/v1/external/beanstalk
```
For an example rendering, see
[Zulip's Beanstalk integration](https://zulipchat.com/integrations/doc/beanstalk).
[GitHub]: https://zulipchat.com/integrations/doc/github
[codebase]: https://zulipchat.com/integrations/doc/codebase
[beanstalk]: https://zulipchat.com/integrations/doc/beanstalk
[1]: https://github.com/zulip/zulip/blob/708f3a4bb19c8e823c9ea1e577d360ac4229b199/zerver/lib/integrations.py#L78
## Writing guidelines
For the vast majority of integrations, you should just copy the docs for a
similar integration and edit it. [Basecamp][basecamp] is a good one to copy.
[basecamp]: https://zulipchat.com/integrations/doc/basecamp
### General writing guidelines
At at high level, the goals are for the instructions to feel simple, be easy to
follow, and be easy to maintain. Easier said than done, but here are a few
concrete guidelines.
##### Feel simple
- Use simple language.
- Use the imperative tense.
- Only describe things as much as necessary. For example: "Select **Project settings**."
is better than "Select **Project settings** from the dropdown."
- Cut unnecessary words. For example, do not start steps with transition words
like "Next", "First", "Now", etc. Each step should be structurally
independent.
##### Be easy to follow
- Actions should appear in order, including implicit ones. So "Under
**Webhooks**, click **Add Webhook**." not "Click **Add Webhook** in the
**Webhooks** section." "Under **Webhooks**" is an action, since its basically
the same as "Find the Webhooks section".
- UI elements in third-party websites should be **bolded**.
- Trailing punctuation can be stripped from bolded elements. For example,
"**Enable this checkbox**" instead of "**Enable this checkbox?**".
Starting punctuation such as the "**+**" in "**+ New Notification**" should
be preserved.
- You can use a screenshot if a step is particularly complicated
(see [Screenshots](#screenshots) below).
##### Be easy to maintain
- Follow the organization and wording of existing docs as much as possible.
### Guidelines for specific steps
Most doc files should start with a generic sentence about the
integration, for example, "Get `webhook name` notifications in Zulip!"
A typical doc will then have the following steps.
##### "Create the stream" step
- Use the `create-stream` macro. This step should be omitted if the
integration only supports notifications via PMs.
##### "Create the bot" step
- Typically, use the `create-bot-construct-url` macro.
- [Existing macros](#markdown-macros) should be used for this if they exist, but if the macro
defaults dont work, it may make sense to write something custom for the
integration in question. This step is mandatory for all integrations.
##### "Navigate to this screen" step
- In general, this should be one step, even if it takes multiple clicks.
- Begin by mentioning the third-party service being documented with language
such as "Go to your Taiga project", "Go to your GitHub repository",
"On your X project", etc. Assume the user is already logged in to their
account.
- If a UI element is difficult to spot, you can use additional cues like
"Click on **Settings** in the top-right corner" or "On the left, click
**Webhooks**.". Only do this if the element is actually difficult to spot.
- If this step includes more than 5 sentences, it may need to be split up
into multiple steps.
##### "Fill out form and save" step
- Filling out a form and clicking **Save** should generally be one step, even if
there are multiple fields to fill out.
- Its fine to say things like "Follow the on-screen instructions to create an
app" if they have a sequence of steps they guide you through that are pretty
clear.
Lastly, end with the `congrats.md` macro and a screenshot of a sample message
within Zulip.
### Screenshots
Screenshots are hard to maintain, so we generally err on the side of not
including screenshots. That being said, screenshots may be used to aid the
process if the third-party UI is confusing or a specific UI element is hard
to find. A few things to keep in mind:
- Screenshots should be small and should mainly include the third-party UI that
the text is referring to that is difficult to locate.
- Screenshots should never include the entirety of a third-party websites page.
- Each screenshot should come after the step that refers to it.