Display picked items by champion

apps/lol_analytics/lib/lol_analytics/dimensions/item/item_metadata.ex

@@ -0,0 +1,27 @@
+defmodule LolAnalytics.Dimensions.Item.ItemMetadata do
+  alias LolAnalytics.Dimensions.Item.ItemRepo
+  alias LolAnalytics.Dimensions.Champion.ChampionRepo
+  @items_data_url "https://ddragon.leagueoflegends.com/cdn/14.11.1/data/en_US/item.json"
+
+  def update_metadata() do
+    data = get_items()
+
+    data
+    # |> IO.inspect()
+    |> Enum.each(&save_metadata/1)
+  end
+
+  defp get_items() do
+    with {:ok, resp} <- HTTPoison.get(@items_data_url),
+         %{"data" => data} <- Poison.decode!(resp.body) do
+      data
+    else
+      _ -> {:error, :get_items_error}
+    end
+  end
+
+  defp save_metadata({item_id, metadata}) do
+    # IO.inspect(item)
+    ItemRepo.update(item_id, %{metadata: metadata})
+  end
+end

apps/lol_analytics/lib/lol_analytics/dimensions/item/item_repo.ex

@@ -10,7 +10,7 @@ defmodule LolAnalytics.Dimensions.Item.ItemRepo do
     case Repo.one(query) do
       nil ->
         item_changeset = ItemSchema.changeset(%ItemSchema{}, %{item_id: item_id})
-        Repo.insert(item_changeset)
+        Repo.insert!(item_changeset)
 
       item ->
         item
@@ -20,4 +20,11 @@ defmodule LolAnalytics.Dimensions.Item.ItemRepo do
   def list_items() do
     Repo.all(ItemSchema)
   end
+
+  @spec update(item_id :: String.t(), attrs :: map()) :: any()
+  def update(item_id, attrs) do
+    get_or_create(item_id)
+    |> ItemSchema.changeset(attrs)
+    |> Repo.update()
+  end
 end

apps/lol_analytics/lib/lol_analytics/dimensions/item/item_schema.ex

@@ -2,14 +2,17 @@ defmodule LolAnalytics.Dimensions.Item.ItemSchema do
   use Ecto.Schema
   import Ecto.Changeset
 
+  @args [:item_id, :metadata]
+
   schema "dim_item" do
     field :item_id, :integer
+    field :metadata, :map
     timestamps()
   end
 
   def changeset(item = %__MODULE__{}, attrs \\ %{}) do
     item
-    |> cast(attrs, [:item_id])
-    |> validate_required([:item_id])
+    |> cast(attrs, @args)
+    |> validate_required(@args)
   end
 end

apps/lol_analytics/lib/lol_analytics/dimensions/player/player_schema.ex

@@ -11,5 +11,6 @@ defmodule LolAnalytics.Dimensions.Player.PlayerSchema do
     player
     |> cast(attrs, [:puuid])
     |> validate_required([:puuid])
+    |> unique_constraint([:puuid])
   end
 end

apps/lol_analytics/lib/lol_analytics/facts/champion_picked_item/repo.ex

@@ -71,12 +71,14 @@ defmodule LolAnalytics.Facts.ChampionPickedItem.Repo do
               )",
               f.is_win
             ),
+          metadata: i.metadata,
           item_id: i.item_id,
           champion_id: c.champion_id,
           team_position: f.team_position,
           total_games: count("*")
         },
         group_by: [
+          i.metadata,
           i.item_id,
           c.champion_id,
           f.team_position

apps/lol_analytics/priv/repo/migrations/20240613200312_item_metadata.exs

@@ -0,0 +1,9 @@
+defmodule LoLAnalytics.Repo.Migrations.ItemMetadata do
+  use Ecto.Migration
+
+  def change do
+    alter table("dim_item") do
+      add :metadata, :map
+    end
+  end
+end

apps/lol_analytics/priv/repo/migrations/20240613212421_item_metadata_index.exs

@@ -0,0 +1,11 @@
+defmodule LoLAnalytics.Repo.Migrations.ItemMetadataIndex do
+  use Ecto.Migration
+
+  def up do
+    execute("CREATE INDEX dim_item_metadata ON dim_item USING GIN(metadata)")
+  end
+
+  def down do
+    execute("DROP INDEX dim_item_metadata")
+  end
+end