Fixed migration

server/src/migrations/V61__fix_recipe_migration.sql

@@ -0,0 +1,74 @@
+CREATE TEMP TABLE _temp_recipe_book_table
+(
+        recipe_book_id INTEGER PRIMARY KEY NOT NULL,
+        default_recipe_id INT,
+        entity_id INT
+);
+
+-- Find all recipe books
+INSERT
+INTO _temp_recipe_book_table
+SELECT  i.item_id,
+        NULL,
+        NULL
+FROM item i
+WHERE i.item_definition_id = 'veloren.core.pseudo_containers.recipe_book';
+
+-- Find to see if any recipe books correctly have the default recipes item
+UPDATE _temp_recipe_book_table
+SET default_recipe_id = (SELECT item_id FROM item
+                         WHERE item.parent_container_item_id = recipe_book_id
+                                AND item.item_definition_id = 'common.items.recipes.default');
+
+-- Find to see if any default recipe items ended up with an entity_id
+UPDATE _temp_recipe_book_table
+SET entity_id = (SELECT entity_id FROM entity
+                 WHERE entity.entity_id = default_recipe_id);
+
+-- Now create new pairing between recipe book item and default recipe item
+CREATE TEMP TABLE _temp_new_recipe_items_table
+(
+        temp_default_recipe_id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
+        recipe_book_id INTEGER NOT NULL,
+        new_default_recipe_id INT
+);
+
+-- If entity_id is null here, that means that the default recipe item has
+-- no entry in the entity table, so we need to fix it.
+INSERT
+INTO _temp_new_recipe_items_table
+SELECT  NULL,
+        t.recipe_book_id,
+        NULL
+FROM _temp_recipe_book_table t
+WHERE t.entity_id IS NULL;
+
+-- Determine correct entity id
+UPDATE _temp_new_recipe_items_table
+SET new_default_recipe_id = ((SELECT MAX(entity_id) FROM entity) + temp_default_recipe_id);
+
+-- Clear any items that have a taken item_id. We know doing so is safe because the item_id
+-- we are trying to use corresponds to an entity_id that does not exist.
+DELETE
+FROM item
+WHERE item_id > (SELECT MAX(entity_id) FROM entity);
+
+-- Actually insert into entity table this time
+INSERT
+INTO entity
+SELECT t.new_default_recipe_id
+FROM _temp_new_recipe_items_table t;
+
+-- Now correctly re-insert into item table
+-- We don't know if character has learned any recipes, so we cannot insert into '0'.
+-- Position not actually used when loading data for recipe book items, so anything
+-- should be safe here, and next time recipe book data is upserted this will become a real value.
+INSERT
+INTO item
+SELECT	t.new_default_recipe_id,
+        t.recipe_book_id,
+        'common.items.recipes.default',
+        1,
+        'DEFAULT_RECIPE_ITEM',
+        '{}'
+FROM _temp_new_recipe_items_table t;

server/src/persistence/mod.rs

@@ -1,5 +1,9 @@
 //! DB operations and schema migrations
 
+// Touch this comment if changes only include .sql files and no .rs so that
+// migration happens.
+// A
+
 pub(in crate::persistence) mod character;
 pub mod character_loader;
 pub mod character_updater;