SNIPPET: Add draft model functions for snippets.

Author: jamievlin

bot/libs/snippets/model.py

@@ -0,0 +1,36 @@
+from collections import namedtuple
+
+import asyncpg.pool
+
+SnippetHeader = namedtuple(
+    "SnippetHeader",
+    ["id", "name", "content", "uses", "owner_id", "location_id",
+     "created_at"]
+)
+
+
+async def get_snippet(
+        pool: asyncpg.pool.Pool, guild_id: int, owner_id: int, snippet_name: str
+):
+    fields_str = ",".join(SnippetHeader._fields)
+    query = f"""
+    SELECT {fields_str} from snippets
+    WHERE location_id = $1 AND owner_id = $2 AND name = $3
+    """
+    row = await pool.fetchrow(query, guild_id, owner_id, snippet_name)
+    if not row:
+        return None
+    return SnippetHeader(*row)
+
+
+async def create_snippet(
+        pool: asyncpg.pool.Pool, guild_id: int, owner_id: int, snippet_name: str,
+        snippet_text: str
+):
+    query = """
+        INSERT INTO snippets (owner_id, location_id, name, content)
+        VALUES ($1, $2, $3, $4)
+        """
+    await pool.execute(
+        query, guild_id, owner_id, snippet_name, snippet_text
+    )