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Internationalization Specification

Flow​

A notification template is changed and submitted for translation. Upon submission, an outbound webhook call will be made that will notify of a pending change submission. Upon receipt of the webhook event, the content for the notification template can be fetched and the translation process begun.

Diagram

{
  type: "notification:submitted",
  data: {
		id: "NOTIFICATION_ID_HERE",
    // ...
  }

Fetching Content​

When the "notification:submitted" is received

GET /notifications/:notification_id/draft/content

Sample Template​

Sample Template Response​

{
  "blocks": [
    {
      "alias": "Greetings",
      "context": "This is where we greet a new user",
      "id": "block_43c114d9-9cfd-4340-808f-17e2fc7a4c87",
      "type": "text",
      "checksum": "fb60f2098fa407a4ff8d48e3e908d889",
      "content": "Hello <variable id=\"3\">{name}</variable>, Welcome to <highlight id=\"6\">Courier</highlight>!",
      "locales": {
        "fr_FR": "Bonjour <variable id=\"3\">{name}</variable>, bienvenu a <highlight id=\"6\">Courier</highlight>!"
      }
    },
    {
      "id": "block_f19dd58f-d32c-41b8-911c-239053d34803",
      "type": "markdown",
      "content": "Ready, <variable id=\"3\">{name}</variable>? Get started [here](http://daringfireball.net/projects/markdown/).",
      "checksum": "d06665ec3f663789db81474bc1a82fc5",
      "locales": {
        "fr_FR": "prêt, <variable id=\"3\">{name}</variable>? Commencer [ici](http://daringfireball.net/projects/markdown/)."
      }
    },
    {
      "id": "block_78863d66-54f2-4032-a897-cbed3abb2538",
      "type": "quote",
      "content": "<highlight id=\"3\">Marvel</highlight> is better than DC, do you agree <variable id=\"6\">{name}</variable>?",
      "checksum": "d6e5df4e00b54703e7048cbc5276863e",
      "locales": {
        "fr_FR": "<highlight id=\"3\">Marvel</highlight> mieux que DC, êtes-vous d'accord <variable id=\"3\">{name}</variable>?"
      }
    },
    {
      "id": "block_106b5136-1bf9-4842-bff7-cbae140fd3a3",
      "type": "action",
      "content": "Share",
      "checksum": "67561c1170434dcbfd9becb827672495",
      "locales": {
        "fr_FR": "Partagez"
      }
    },
    {
      "id": "block_9ec5eba6-8ab1-4938-96b0-0f6b63439619",
      "type": "list",
      "content": {
        "children": "<variable id=\"3\">{userName}</variable>",
        "parent": "<variable id=\"3\">{blogTitle}</variable> liked by"
      },
      "checksum": "a4f817cd1a363e95ce1400095937cad8",
      "locales": {
        "fr_FR": {
          "children": "<variable id=\"3\">{userName}</variable>",
          "parent": "<variable id=\"3\">{blogTitle}</variable> aimé par"
        }
      }
    },
    {
      "id": "block_31500deb-de21-436f-9ae6-98f08d569148",
      "type": "template",
      "content": "\n\n<div class=\"notes\">Thanks!</div>",
      "checksum": "c1a6639e8a83a4aba68004ad1a06f124",
      "locales": {
        "fr_FR": "\n\n<div class=\"notes\">Merci!</div>"
      }
    }
  ],
  "channels": [
    {
      "id": "channel_f2e7b2e9-187f-40d9-9725-636d6c59833a",
      "type": "email",
      "content": {
        "subject": "New Subject"
      },
      "checksum": "96bcf212afa5cae1c7918280743aec71",
      "locales": {
        "fr_FR": {
          "subject": "French New Subject"
        }
      }
    }
  ],
  "checksum": "22d224a20345f1e3d3cf4c231243a747"
}

Block Alias and Context​

Every block can optionally have an alias and a context. This can be used to have supplementary block information for organizing blocks better.

Retrieval: GET content endpoints can be used to retrieve alias and context per block

Updates: Can only be changed from the Courier UI by clicking on the block info(i) icon

Block types supported​

Text Block​

Example: Text block with a variable {name} and a highlight

Here's how the block JSON would look like

{
  "alias": "Greetings",
  "context": "This is where we greet a new user",
  "id": "block_43c114d9-9cfd-4340-808f-17e2fc7a4c87",
  "type": "text",
  "content": "Hello <variable id=\"3\">{name}</variable>, Welcome to <highlight id=\"6\">Courier</highlight>!",
  "locales": {
    "fr_FR": "Bonjour <variable id=\"3\">{name}</variable>, bienvenu a <highlight id=\"6\">Courier</highlight>!"
  }
}

Let's talk IDs​

Block ID: This is the top level ID which every block gets and is prefixed with block.

Variable ID: Unique IDs that a variable inside a block content gets

Highlight ID: Unique IDs that a highlight inside a block content gets

Note - All the IDs are auto-generated by Courier and are used in resolving the contents for the block. The locale variations PUT should also have exactly same IDs for accurate consolidation and resolution.

Quote Block​

Example: Quote block with a variable {name} and a highlight

{
  "id": "block_78863d66-54f2-4032-a897-cbed3abb2538",
  "type": "quote",
  "content": "<highlight id=\"3\">Marvel</highlight> is better than DC, do you agree <variable id=\"6\">{name}</variable>?",
  "locales": {
    "fr_FR": "<highlight id=\"3\">Marvel</highlight> mieux que DC, êtes-vous d'accord <variable id=\"3\">{name}</variable>?"
  }
}

Markdown Block​

Example: Markdown block with a variable {name}

{
  "id": "block_f19dd58f-d32c-41b8-911c-239053d34803",
  "type": "markdown",
  "content": "Ready, <variable id=\"3\">{name}</variable>? Get started [here](http://daringfireball.net/projects/markdown/).",
  "locales": {
    "fr_FR": "prêt, <variable id=\"3\">{name}</variable>? Commencer [ici](http://daringfireball.net/projects/markdown/)."
  }
}

Action Block​

{
  "id": "block_106b5136-1bf9-4842-bff7-cbae140fd3a3",
  "type": "action",
  "content": "Share it",
  "locales": {
    "fr_FR": "Partagez-le"
  }
}

List Block​

List blocks can get a bit confusing - an article that can help an article that can help 🙂

{
  "id": "block_9ec5eba6-8ab1-4938-96b0-0f6b63439619",
  "type": "list",
  "content": {
    "children": "<variable id=\"3\">{userName}</variable>",
    "parent": "<variable id=\"3\">{blogTitle}</variable> liked by"
  },
  "locales": {
    "fr_FR": {
      "children": "<variable id=\"3\">{userName}</variable>",
      "parent": "<variable id=\"3\">{blogTitle}</variable> aimé par"
    }
  }
}

Template Block​

{
  "id": "block_31500deb-de21-436f-9ae6-98f08d569148",
  "type": "template",
  "content": "\n\n<div class=\"notes\">Thanks!</div>"
  },
  "locales": {
     "fr_FR": "\n\n<div class=\"notes\">Merci!</div>"
  }
}

Note: We intentionally omit styles and comments in the API response to optimize the translation payload

Checksum​

We md5 hash the contents for each block, channel and notification so you could track if contents have ever changed in order to manage translations workflow as needed.

Channels​

We expose the email (subject) and push (title) to be localized (assuming you have those channels configured with your notification)

Updating Content​

When translated content is received, template content should be fetched and the new content should be overlaid. This can be repeated each time a piece of translated content is received.

PUT /notifications/:notification_id/draft/locales

{
  "blocks": [
    {
      "id": "block_43c114d9-9cfd-4340-808f-17e2fc7a4c87",
      "type": "text",
      "locales": {
        "fr_FR": "Bonjour <variable id=\"3\">{name}</variable>, bienvenu a <highlight id=\"6\">Courier</highlight>!"
      }
    },
    {
      "id": "block_78863d66-54f2-4032-a897-cbed3abb2538",
      "type": "quote",
      "locales": {
        "fr_FR": "<highlight id=\"3\">Marvel</highlight> mieux que DC, êtes-vous d'accord <variable id=\"3\">{name}</variable>?"
      }
    },
    {
      "id": "block_f19dd58f-d32c-41b8-911c-239053d34803",
      "type": "markdown",
      "locales": {
        "fr_FR": "prêt, <variable id=\"3\">{name}</variable>? Commencer [ici](http://daringfireball.net/projects/markdown/)."
      }
    },
    {
      "id": "block_106b5136-1bf9-4842-bff7-cbae140fd3a3",
      "type": "action",
      "locales": {
        "fr_FR": "Partagez-le"
      }
    },
    {
      "id": "block_9ec5eba6-8ab1-4938-96b0-0f6b63439619",
      "type": "list",
      "locales": {
        "fr_FR": {
          "children": "<variable id=\"3\">{userName}</variable>",
          "parent": "<variable id=\"3\">{blogTitle}</variable> aimé par"
        }
      }
    },
    {
      "id": "block_31500deb-de21-436f-9ae6-98f08d569148",
      "type": "template",
      "locales": {
        "fr_FR": "\n\n<div class=\"notes\">Merci!</div>"
      }
    }
  ]
}

Updating partial contents​

In case you'd like to update a specific block or a channel's locales, or all blocks and channels for a specific locale (for ex: Chinese translations for a notification), we've got you covered. You can use the following endpoints -

Update locales for a specific block​

POST /notifications/:notification_id/blocks/:block_id/locales

or POST /notifications/:id/draft/blocks/:blockId/locales

{
  "fr_FR": "French Lorem Ipsum",
  "it_IT": "Italian Lorem Ipsum"
}

Update locales for a specific channel​

POST /notifications/:id/channels/:channelId/locales

or POST /notifications/:id/draft/channels/:channelId/locales

{
  "fr_FR": "French Subject",
  "it_IT": "Italian Subject"
}

Update block and channel contents for a specific locale​

PUT /notifications/:id/locales/:localeid

or PUT /notifications/:id/draft/locales/:localeid

{
  "blocks": [
    {
      "id": "block_f4c81f75-8edb-4c8f-a50b-37193a580b7f",
      "content": "Italian text block content"
    },
    {
      "id": "block_fcb968bf-b0d1-48e0-b1b2-e23963de8479",
      "content": {
          "children": "Italian List block children",
          "parent": "Italian List block parent"
      }
    }
  ],
  "channels": [
    {
      "id": "channel_9f24f9a9-c597-4330-b357-7929a6dc8f33",
      "content": "Italian Subject"
    },
    {
      "id": "channel_20dda4a6-5439-4a71-953a-bc70a90e39f5",
      "content": "Italian Push Title"
    }
  ]

Completing The Process​

Once all content has been updated, Courier can be notified that the process is completed and release the template to be published.

PUT /notifications/:notification_id/:submission_id/checks

{
  "checks": [
    {
      "id": "B5BYH93H4D4XRPJBMZJGB43TJEZ3", // check ID
      "status": "RESOLVED",
      "type": "custom"
    }
  ]
}

Fetching Checks​

Checks API GET endpoint

GET /notifications/:notification_id/:submission_id/checks

Example - GET /notifications/SFTYJKSF0241SVH2TWY97TTFFTQG/1630424150210/checks

{
	"checks":[
		{
			"id":"B5BYH93H4D4XRPJBMZJGB43TJEZ3", // check ID
			"status":"PENDING",
			"type":"custom",
			"updated":1630424150210
		}
	]
}

Locale based preview​

Notification Preview section reflects localized content if there's a locale associated with the profile in your test-event. Here's an example -

I have "locale": "fr_FR" in the profile object of a test event

Localized Preview

Default Preview (no locale in the profile object of the test event)

Using locales while sending messages​

You can use locale as a profile attribute while invoking Courier's /send endpoint. Here's an example -

{
	"event": "<your-notification-or-event>",
	"recipient": "<your-recipient>",
	"profile": {
            "locale": "en_US"
         }
}

Webhooks​

As mentioned earlier in the doc, you could configure the webhooks in Settings → Webhooks and we'd call those when a notification was submitted for a review, when it was canceled and also when it got published. Please note: At this point we do not have a granular way to allocate webhooks so you could get other events (like message sent events) for the webhooks you add to the Settings, feel free to ignore/not handle those. Here's a couple of screenshots -

Submitted Keys​

Submitted keys are used when you have to send a notification that was submitted for a review but maybe not ready to be published. Basically, submitted is an interim state between Draft and Published. Here's how it works -

→ If notification was published, a submitted key send operation uses published notification contents

→ If notification was submitted for review, a submitted key send operation uses latest draft notification content

Submitted keys can be retrieved, updated or deleted from the Settings → API Keys UI.

Block overrides​

We also expose blocks via overrides object in case you need to override the contents on the fly during the send operations.