Model AI game sides as GamePlayerAi, unioned in GamePlayers

doc/specs/schemas/GamePlayerAi.yaml

@@ -0,0 +1,26 @@
+type: object
+
+description: |
+  One side of a game played by the Stockfish AI. AI sides carry the
+  strength level instead of `user` and `rating`.
+
+properties:
+  aiLevel:
+    type: integer
+  analysis:
+    type: object
+    properties:
+      inaccuracy:
+        type: integer
+      mistake:
+        type: integer
+      blunder:
+        type: integer
+      acpl:
+        type: integer
+      accuracy:
+        type: integer
+    required: [inaccuracy, mistake, blunder, acpl]
+
+required:
+  - aiLevel

doc/specs/schemas/GamePlayerUser.yaml

@@ -11,8 +11,6 @@ properties:
     type: string
   provisional:
     type: boolean
-  aiLevel:
-    type: integer
   analysis:
     type: object
     properties:

doc/specs/schemas/GamePlayers.yaml

@@ -2,9 +2,13 @@ type: object
 
 properties:
   white:
-    $ref: "./GamePlayerUser.yaml"
+    oneOf:
+      - $ref: "./GamePlayerUser.yaml"
+      - $ref: "./GamePlayerAi.yaml"
   black:
-    $ref: "./GamePlayerUser.yaml"
+    oneOf:
+      - $ref: "./GamePlayerUser.yaml"
+      - $ref: "./GamePlayerAi.yaml"
 
 required:
   - white

doc/specs/schemas/_index.yaml

@@ -55,6 +55,9 @@ BulkPairing:
 GamePlayerUser:
   $ref: "./GamePlayerUser.yaml"
 
+GamePlayerAi:
+  $ref: "./GamePlayerAi.yaml"
+
 GameJson:
   $ref: "./GameJson.yaml"