refactor: tidy composite action into docker-based action

Dockerfile

@@ -0,0 +1,12 @@
+FROM python:3.12-alpine AS base
+
+RUN apk update && apk upgrade
+
+COPY ./requirements.txt ./requirements.txt
+
+RUN pip install --upgrade pip && pip install -r ./requirements.txt
+
+COPY ./main.py ./main.py
+COPY ./entrypoint.sh ./entrypoint.sh
+
+ENTRYPOINT ["./entrypoint.sh"]

action.yml

@@ -13,28 +13,19 @@ inputs:
   variant:
     description: "Style to attach to the message element."
     default: "info"
-  init:
-    description: "Marks the first status push, prevents pulling context."
+  message-id:
+    description: "Message ID to post to."
+
+outputs:
+  message-id:
+    description: "Id of the message created, for later edits."
 
 runs:
-  using: "composite"
-  steps:
-    - name: Setup Python
-      uses: actions/setup-python@v5
-      with:
-        python-version: 3.12
-    - uses: actions/download-artifact@v3
-      if: ${{ !inputs.init }}
-      with:
-        name: "${{github.sha}}-${{github.run_number}}-${{github.run_attempt}}-discord-context.zip"
-        path: /tmp
-    - name: Install dependencies
-      if: ${{ always() }}
-      run: pip install -r ${{ github.action_path }}/requirements.txt
-    - run: python ${{ github.action_path }}/main.py ${{ inputs.webhook-url }} "${{inputs.title}}" ${{ inputs.status }} ${{ inputs.variant }} /tmp/discord-context
-    - uses: actions/upload-artifact@v3
-      with:
-        path: /tmp/discord-context
-        name: "${{github.sha}}-${{github.run_number}}-${{github.run_attempt}}-discord-context.zip"
-        retention-days: 1
-        overwrite: true
+  using: "docker"
+  image: "Dockerfile"
+  args:
+    - ${{ inputs.webhook-url }}
+    - ${{ inputs.status }}
+    - ${{ inputs.variant }}
+    - ${{ inputs.title }}
+    - ${{ inputs.message-id }}

entrypoint.sh

@@ -0,0 +1,3 @@
+#!/bin/bash
+
+python ./main.py "$@"

main.py

@@ -1,8 +1,7 @@
 import sys
 import typing
-import json
-import pathlib
 import datetime
+import os
 
 import httpx
 
@@ -43,11 +42,20 @@ class Context(typing.TypedDict):
 
 
 if __name__ == "__main__":
-    webhook_url, title, status, variant, context_path = sys.argv[1:6]
-    context = None
-    if pathlib.Path(context_path).exists():
-        with open(context_path, "r", encoding="utf-8") as context_file:
-            context = Context(**json.load(context_file))
+    (
+        webhook_url,
+        status,
+        variant,
+        title,
+    ) = sys.argv[1:5]
+
+    message_id = sys.argv[5] if len(sys.argv) == 6 else None
+
+    previous_message_data = (
+        httpx.get(f"{webhook_url}/messages/{message_id}").json()
+        if message_id is not None
+        else None
+    )
 
     embed_data = Embed(
         color=COLORS[variant],
@@ -62,15 +70,19 @@ if __name__ == "__main__":
         ],
     )
 
-    if context:
-        message_id = context["message"]["id"]
+    if message_id is not None:
+        previous_message_data = httpx.get(f"{webhook_url}/messages/{message_id}").json()
+
         response = httpx.patch(
             f"{webhook_url}/messages/{message_id}?wait=true",
-            json={"embeds": [*context["message"]["embeds"], embed_data]},
+            json={"embeds": [*previous_message_data["embeds"], embed_data]},
         )
+        message_id = response.json()["id"]
     else:
         response = httpx.post(f"{webhook_url}?wait=true", json={"embeds": [embed_data]})
-        context = Context(message=response.json())
+        message_id = response.json()["id"]
 
-    with open(context_path, "w", encoding="utf-8") as context_file:
-        json.dump(context, context_file)
+    outputs_path = os.environ.get("GITHUB_ENV")
+
+    with open(outputs_path, "a", encoding="utf-8") as outputs_file:
+        outputs_file.write(f"message-id={message_id}")

requirements.txt

@@ -1 +1,2 @@
 httpx==0.27
+pydantic>=2.0.0