Add support for dates without times, fix list props.

src/notion_utils.nim

@@ -3,23 +3,37 @@ import std/httpclient, std/json, std/logging, std/options, std/sequtils,
 import timeutils
 
 const NOTION_MAX_PAGE_SIZE* = 100
+const NOTION_DATE_FORMAT = "YYYY-MM-dd"
 
 proc parseDate(str: string): DateTime =
   try: result = parseIso8601(str)
-  except: result = times.parse(str, "YYYY-MM-dd")
+  except: result = times.parse(str, NOTION_DATE_FORMAT)
 
 ## Utility functions for creating Page property values
 ## ---------------------------------------------------
 
+proc makeDateProp*(d: Option[DateTime]): JsonNode =
+  if d.isSome: return %*{ "date": { "start": format(d.get, NOTION_DATE_FORMAT) } }
+  else: return %*{ "date": nil }
+
 proc makeDateTimeProp*(d: Option[DateTime]): JsonNode =
   if d.isSome: return %*{ "date": { "start": formatIso8601(d.get) } }
   else: return %*{ "date": nil }
 
+proc makeIntervalProp*(s: Option[DateTime], e: Option[DateTime]): JsonNode =
+  if not s.isSome: result = %*{ "date": nil }
+
+  result = %*{ "date": { "start": formatIso8601(s.get) } }
+
+  if e.isSome: result["date"]["end"] = %formatIso8601(e.get)
+
 proc makeMultiSelectProp*(values: seq[string]): JsonNode =
-  return %*{ "multi_select": [ values.mapIt(%*{ "name": it }) ] }
+  if values.len == 0: return %*{ "multi_select": [] }
+  return %*{ "multi_select": values.mapIt(%*{ "name": it }) }
 
 proc makeRelationProp*(ids: seq[string]): JsonNode =
-  return %*{ "relation": [ ids.mapIt(%*{ "id": it }) ] }
+  if ids.len == 0: return %*{ "relation": [] }
+  return %*{ "relation": ids.mapIt(%*{ "id": it }) }
 
 proc makeSelectProp*(value: string): JsonNode =
   return %*{ "select": { "name": value } }