mirror of
https://github.com/logos-messaging/logos-messaging-nim.git
synced 2026-06-26 11:29:28 +00:00
92 lines
2.6 KiB
Nim
92 lines
2.6 KiB
Nim
import std/[json]
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import chronos, results, ffi
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import stew/byteutils
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import
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logos_delivery/waku/common/base64,
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logos_delivery/waku/waku,
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logos_delivery/waku/waku_core/topics/content_topic,
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logos_delivery/api/types,
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../declare_lib
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proc logosdelivery_subscribe(
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ctx: ptr FFIContext[LogosDelivery],
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callback: FFICallBack,
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userData: pointer,
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contentTopicStr: cstring,
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) {.ffi.} =
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requireInitializedNode(ctx, "Subscribe"):
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return err(errMsg)
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# ContentTopic is just a string type alias
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let contentTopic = ContentTopic($contentTopicStr)
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(await ctx.myLib[].messagingClient.subscribe(contentTopic)).isOkOr:
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let errMsg = $error
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return err("Subscribe failed: " & errMsg)
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return ok("")
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proc logosdelivery_unsubscribe(
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ctx: ptr FFIContext[LogosDelivery],
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callback: FFICallBack,
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userData: pointer,
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contentTopicStr: cstring,
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) {.ffi.} =
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requireInitializedNode(ctx, "Unsubscribe"):
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return err(errMsg)
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# ContentTopic is just a string type alias
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let contentTopic = ContentTopic($contentTopicStr)
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ctx.myLib[].messagingClient.unsubscribe(contentTopic).isOkOr:
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let errMsg = $error
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return err("Unsubscribe failed: " & errMsg)
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return ok("")
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proc logosdelivery_send(
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ctx: ptr FFIContext[LogosDelivery],
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callback: FFICallBack,
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userData: pointer,
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messageJson: cstring,
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) {.ffi.} =
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requireInitializedNode(ctx, "Send"):
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return err(errMsg)
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## Parse the message JSON and send the message
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var jsonNode: JsonNode
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try:
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jsonNode = parseJson($messageJson)
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except Exception as e:
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return err("Failed to parse message JSON: " & e.msg)
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# Extract content topic
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if not jsonNode.hasKey("contentTopic"):
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return err("Missing contentTopic field")
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# ContentTopic is just a string type alias
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let contentTopic = ContentTopic(jsonNode["contentTopic"].getStr())
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# Extract payload (expect base64 encoded string)
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if not jsonNode.hasKey("payload"):
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return err("Missing payload field")
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let payloadStr = jsonNode["payload"].getStr()
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let payload = base64.decode(Base64String(payloadStr)).valueOr:
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return err("invalid payload format: " & error)
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# Extract ephemeral flag
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let ephemeral = jsonNode.getOrDefault("ephemeral").getBool(false)
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# Create message envelope
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let envelope = MessageEnvelope.init(
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contentTopic = contentTopic, payload = payload, ephemeral = ephemeral
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)
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# Send the message via the messaging layer's own API.
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let requestId = (await ctx.myLib[].messagingClient.send(envelope)).valueOr:
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let errMsg = $error
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return err("Send failed: " & errMsg)
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return ok($requestId)
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