Add HTTP api

src/state.nim

@@ -0,0 +1,42 @@
+import tables, strtabs, sequtils, nativesockets
+import ../lib/dns
+
+type
+  RecordKey* = tuple
+    name: string
+    dtype: DnsType
+
+type
+  RecordsTable* = Table[RecordKey, seq[string]]
+
+type
+  AppConfig* = object
+    users*: StringTableRef
+    base*: string
+    apiPort*: Port
+    dnsPort*: Port
+
+func trimName*(name: string): string =
+  if name[^1] == '.':
+    return name[0 .. ^2]
+  else:
+    return name
+
+proc addRecord*(records: var RecordsTable, key: RecordKey, record: string) =
+  if records.hasKey(key):
+    records[key].add(record)
+  else:
+    records[key] = @[record]
+
+proc delRecord*(records: var RecordsTable, key: RecordKey, record: string) =
+  if not records.hasKey(key):
+    return
+
+  records[key].keepItIf(it != record)
+
+  if len(records[key]) == 0:
+    records.del(key)
+
+# TODO: don't use a global for this
+var records* {.threadvar.}: RecordsTable
+records = initTable[RecordKey, seq[string]]()