Merge pull request #914 from tyiu/nip52-amendments

Amend NIP-52 to require the content field to be provided, and decouple calendar identifier from calendar name

2 files changed, 25 insertions, 10 deletions

diff --git a/24.md b/24.md
index f830b68..d444a4b 100644
--- a/24.md
+++ b/24.md
@@ -39,3 +39,4 @@ tags
 These tags may be present in multiple event kinds. Whenever a different meaning is not specified by some more specific NIP, they have the following meanings:
 
   - `r`: a web URL the event is referring to in some way
+  - `title`: title of the event
diff --git a/52.md b/52.md
index 15cc8fc..4ec6836 100644
--- a/52.md
+++ b/52.md
@@ -22,19 +22,22 @@ This kind of calendar event starts on a date and ends before a different date in
 
 The format uses a parameterized replaceable event kind `31922`.
 
-The `.content` of these events is optional and should be a detailed description of the calendar event.
+The `.content` of these events should be a detailed description of the calendar event. It is required but can be an empty string.
 
 The list of tags are as follows:
 * `d` (required) universally unique identifier (UUID). Generated by the client creating the calendar event.
-* `name` (required) name of the calendar event
+* `title` (required) title of the calendar event
 * `start` (required) inclusive start date in ISO 8601 format (YYYY-MM-DD). Must be less than `end`, if it exists.
 * `end` (optional) exclusive end date in ISO 8601 format (YYYY-MM-DD). If omitted, the calendar event ends on the same date as `start`.
-* `location` (optional) location of the calendar event. e.g. address, GPS coordinates, meeting room name, link to video call
+* `location` (optional, repeated) location of the calendar event. e.g. address, GPS coordinates, meeting room name, link to video call
 * `g` (optional) [geohash](https://en.wikipedia.org/wiki/Geohash) to associate calendar event with a searchable physical location
 * `p` (optional, repeated) 32-bytes hex pubkey of a participant, optional recommended relay URL, and participant's role in the meeting
 * `t` (optional, repeated) hashtag to categorize calendar event
 * `r` (optional, repeated) references / links to web pages, documents, video calls, recorded videos, etc.
 
+The following tags are deprecated:
+* `name` name of the calendar event. Use only if `title` is not available.
+
 ```json
 {
   "id": <32-bytes lowercase hex-encoded SHA-256 of the the serialized event data>,
@@ -45,7 +48,7 @@ The list of tags are as follows:
   "tags": [
     ["d", "<UUID>"],
 
-    ["name", "<name of calendar event>"],
+    ["title", "<title of calendar event>"],
 
     // Dates
     ["start", "<YYYY-MM-DD>"],
@@ -78,21 +81,24 @@ This kind of calendar event spans between a start time and end time.
 
 The format uses a parameterized replaceable event kind `31923`.
 
-The `.content` of these events is optional and should be a detailed description of the calendar event.
+The `.content` of these events should be a detailed description of the calendar event. It is required but can be an empty string.
 
 The list of tags are as follows:
 * `d` (required) universally unique identifier (UUID). Generated by the client creating the calendar event.
-* `name` (required) name of the calendar event
+* `title` (required) title of the calendar event
 * `start` (required) inclusive start Unix timestamp in seconds. Must be less than `end`, if it exists.
 * `end` (optional) exclusive end Unix timestamp in seconds. If omitted, the calendar event ends instantaneously.
 * `start_tzid` (optional) time zone of the start timestamp, as defined by the IANA Time Zone Database. e.g., `America/Costa_Rica`
 * `end_tzid` (optional) time zone of the end timestamp, as defined by the IANA Time Zone Database. e.g., `America/Costa_Rica`. If omitted and `start_tzid` is provided, the time zone of the end timestamp is the same as the start timestamp.
-* `location` (optional) location of the calendar event. e.g. address, GPS coordinates, meeting room name, link to video call
+* `location` (optional, repeated) location of the calendar event. e.g. address, GPS coordinates, meeting room name, link to video call
 * `g` (optional) [geohash](https://en.wikipedia.org/wiki/Geohash) to associate calendar event with a searchable physical location
 * `p` (optional, repeated) 32-bytes hex pubkey of a participant, optional recommended relay URL, and participant's role in the meeting
 * `t` (optional, repeated) hashtag to categorize calendar event
 * `r` (optional, repeated) references / links to web pages, documents, video calls, recorded videos, etc.
 
+The following tags are deprecated:
+* `name` name of the calendar event. Use only if `title` is not available.
+
 ```json
 {
   "id": <32-bytes lowercase hex-encoded SHA-256 of the the serialized event data>,
@@ -103,7 +109,7 @@ The list of tags are as follows:
   "tags": [
     ["d", "<UUID>"],
 
-    ["name", "<name of calendar event>"],
+    ["title", "<title of calendar event>"],
 
     // Timestamps
     ["start", "<Unix timestamp in seconds>"],
@@ -137,15 +143,23 @@ A calendar is a collection of calendar events, represented as a custom replaceab
 
 ### Format
 
+The `.content` of these events should be a detailed description of the calendar. It is required but can be an empty string.
+
 The format uses a custom replaceable list of kind `31924` with a list of tags as described below:
-* `d` (required) calendar name
+* `d` (required) universally unique identifier. Generated by the client creating the calendar.
+* `title` (required) calendar title
 * `a` (repeated) reference tag to kind `31922` or `31923` calendar event being responded to
 
 ```json
 {
+  "id": <32-bytes lowercase hex-encoded SHA-256 of the the serialized event data>,
+  "pubkey": <32-bytes lowercase hex-encoded public key of the event creator>,
+  "created_at": <Unix timestamp in seconds>,
   "kind": 31924,
+  "content": "<description of calendar>",
   "tags": [
-    ["d", "<calendar name>"],
+    ["d", "<UUID>"],
+    ["title", "<calendar title>"],
     ["a", "<31922 or 31923>:<calendar event author pubkey>:<d-identifier of calendar event>", "<optional relay url>"],
     ["a", "<31922 or 31923>:<calendar event author pubkey>:<d-identifier of calendar event>", "<optional relay url>"]
   ]