Add deck POST/PUT

tutor/database.py

@@ -361,11 +361,23 @@ async def store_deck_card(
         """
         INSERT INTO "deck_list" ("deck_id", "oracle_id", "quantity")
         VALUES (%(deck_id)s, %(oracle_id)s, %(quantity)s)
+        ON CONFLICT ("deck_id", "oracle_id") DO UPDATE
+        SET "quantity" = "deck_list"."quantity" + EXCLUDED."quantity"
         """,
         {"deck_id": deck_id, "oracle_id": str(oracle_id), "quantity": quantity},
     )
 
 
+async def clear_deck(db: psycopg.AsyncCursor, deck_id: int) -> None:
+    await db.execute(
+        """
+        DELETE FROM "deck_list"
+        WHERE "deck_id" = %(deck_id)s
+        """,
+        {"deck_id": deck_id},
+    )
+
+
 async def get_decks(
     db: psycopg.AsyncCursor, limit: int = 10, offset: int = 0
 ) -> typing.List[tutor.models.Deck]:
@@ -479,8 +491,8 @@ async def get_deck(
                     'quantity', "deck_list"."quantity"
                   ))) AS "cards"
              FROM "decks"
-        LEFT JOIN "deck_list" USING ("deck_id")
-        LEFT JOIN "oracle_latest" USING ("oracle_id")
+             JOIN "deck_list" USING ("deck_id")
+             JOIN "oracle_latest" USING ("oracle_id")
             WHERE "decks"."deck_id" = %(deck_id)s
          GROUP BY "decks"."deck_id"
                 , "decks"."name"

tutor/models.py

@@ -119,6 +119,7 @@ class CardConstraint:
     language: typing.Optional[str] = None
     foil: typing.Optional[str] = None
 
+
 @dataclasses.dataclass
 class DeckCard:
     card: Card

tutor/server.py

@@ -1,7 +1,11 @@
+import asyncio
 import decimal
 import importlib.metadata
 import importlib.resources
+import io
+import itertools
 import json
+import logging
 import re
 import typing
 import urllib.parse
@@ -13,12 +17,16 @@ import tornado.ioloop
 import tornado.web
 import tornado_openapi3.handler
 import yaml
+from tornado.ioloop import IOLoop
 
 import tutor.database
 import tutor.models
 import tutor.search
 
 
+logger = logging.getLogger(__name__)
+
+
 def update_args(url: str, **qargs) -> str:
     parts = urllib.parse.urlsplit(url)
     return urllib.parse.urlunsplit(
@@ -212,7 +220,33 @@ class CollectionHandler(RequestHandler):
                 )
 
 
+class DeckImporter:
+    line_pattern = re.compile(r"^(?P<quantity>\d+)x? (?P<name>[^\]$]+)")
+
+    def __init__(self) -> None:
+        self.imported: int = 0
+        self.last_chunk: bytes = b""
+
+    def process(
+        self, chunk: bytes = b""
+    ) -> typing.Iterator[tutor.models.CardConstraint]:
+        lines = (self.last_chunk + chunk).splitlines()
+        self.last_chunk = lines.pop()
+        for line in lines:
+            if match := self.line_pattern.match(line.decode("utf8").strip()):
+                for card in itertools.repeat(
+                    tutor.models.CardConstraint(name=match.group("name")),
+                    int(match.group("quantity")),
+                ):
+                    self.imported += 1
+                    yield card
+
+
 class DecksHandler(RequestHandler):
+    def initialize(self) -> None:
+        self.importer = DeckImporter()
+        self.deck_id = None
+
     async def get(self) -> None:
         page = max(1, int(self.get_argument("page", "1")))
         limit = int(self.get_argument("limit", "10"))
@@ -233,22 +267,68 @@ class DecksHandler(RequestHandler):
         self.write(json.dumps(decks, cls=JSONEncoder))
 
     async def post(self) -> None:
-        ...
+        self.set_header("Content-Type", "application/json")
+        self.set_header("Access-Control-Allow-Origin", "*")
+        self.write(json.dumps({}))
 
 
+@tornado.web.stream_request_body
 class DeckHandler(RequestHandler):
+    async def prepare(self) -> None:
+        self.connection = await self.pool.getconn()
+        self.deck_id = self.path_args[0]
+        content_type = self.request.headers.get("Content-Type", "text/plain")
+        if content_type == "text/plain":
+            self.importer = DeckImporter()
+        if self.request.method == "PUT":
+            async with self.connection.cursor() as cursor:
+                await tutor.database.clear_deck(cursor, self.deck_id)
+
+    async def data_received(self, chunk) -> None:
+        for card in self.importer.process(chunk):
+            await self.add_card(card)
+
+    async def add_card(self, card: tutor.models.CardConstraint) -> None:
+        async with self.connection.cursor() as cursor:
+            oracle_id = await tutor.database.oracle_id_by_name(cursor, card.name)
+            if oracle_id:
+                logger.debug("Adding card %s to deck %s", card.name, self.deck_id)
+                await tutor.database.store_deck_card(cursor, self.deck_id, oracle_id, 1)
+
+    def on_finish(self) -> None:
+        IOLoop.current().add_callback(self.close_connection)
+
+    async def close_connection(self) -> None:
+        await self.pool.putconn(self.connection)
+
     async def get(self, deck_id) -> None:
         self.set_header("Content-Type", "application/json")
         self.set_header("Access-Control-Allow-Origin", "*")
-        async with self.pool.connection() as conn:
-            async with conn.cursor() as cursor:
-                deck = await tutor.database.get_deck(cursor, deck_id)
+        async with self.connection.cursor() as cursor:
+            deck = await tutor.database.get_deck(cursor, deck_id)
         if not deck:
             raise tornado.web.HTTPError(404)
         self.write(json.dumps(deck, cls=JSONEncoder))
 
+    async def post(self, deck_id) -> None:
+        for card in self.importer.process():
+            await self.add_card(card)
+        async with self.connection.cursor() as cursor:
+            deck = await tutor.database.get_deck(cursor, deck_id)
+        await self.connection.commit()
+        self.set_header("Content-Type", "application/json")
+        self.set_header("Access-Control-Allow-Origin", "*")
+        self.write(json.dumps(deck, cls=JSONEncoder))
+
     async def put(self, deck_id) -> None:
-        ...
+        for card in self.importer.process():
+            await self.add_card(card)
+        async with self.connection.cursor() as cursor:
+            deck = await tutor.database.get_deck(cursor, deck_id)
+        await self.connection.commit()
+        self.set_header("Content-Type", "application/json")
+        self.set_header("Access-Control-Allow-Origin", "*")
+        self.write(json.dumps(deck, cls=JSONEncoder))
 
 
 class TemplateHandler(RequestHandler):