Finished first version of meal planning (for now closes #146)

migrations/0071.sql

@@ -0,0 +1,54 @@
+ALTER TABLE meal_plan
+ADD servings INTEGER DEFAULT 1;
+
+ALTER TABLE recipes
+ADD type TEXT DEFAULT 'normal';
+
+CREATE INDEX ix_recipes ON recipes (
+	name,
+	type
+);
+
+CREATE TRIGGER create_internal_recipe AFTER INSERT ON meal_plan
+BEGIN
+	-- Create a recipe per day
+	DELETE FROM recipes
+	WHERE name = NEW.day
+		AND type = 'mealplan-day';
+
+	INSERT OR REPLACE INTO recipes
+		(id, name, type)
+	VALUES
+		((SELECT MIN(id) - 1 FROM recipes), NEW.day, 'mealplan-day');
+	
+	-- Create a recipe per week
+	DELETE FROM recipes
+	WHERE name = LTRIM(STRFTIME('%Y-%W', NEW.day), '0')
+		AND type = 'mealplan-week';
+
+	INSERT INTO recipes
+		(id, name, type)
+	VALUES
+		((SELECT MIN(id) - 1 FROM recipes), LTRIM(STRFTIME('%Y-%W', NEW.day), '0'), 'mealplan-week');
+	
+	-- Delete all current nestings entries for the day and week recipe
+	DELETE FROM recipes_nestings
+	WHERE recipe_id IN (SELECT id FROM recipes WHERE name = NEW.day AND type = 'mealplan-day')
+		OR recipe_id IN (SELECT id FROM recipes WHERE name = NEW.day AND type = 'mealplan-week');
+
+	-- Add all recipes for this day as included recipes in the day-recipe
+	INSERT INTO recipes_nestings
+		(recipe_id, includes_recipe_id, servings)
+	SELECT (SELECT id FROM recipes WHERE name = NEW.day AND type = 'mealplan-day'), recipe_id, SUM(servings)
+	FROM meal_plan
+	WHERE day = NEW.day
+	GROUP BY recipe_id;
+
+	-- Add all recipes for this week as included recipes in the week-recipe
+	INSERT INTO recipes_nestings
+		(recipe_id, includes_recipe_id, servings)
+	SELECT (SELECT id FROM recipes WHERE name = LTRIM(STRFTIME('%Y-%W', NEW.day), '0') AND type = 'mealplan-week'), recipe_id, SUM(servings)
+	FROM meal_plan
+	WHERE STRFTIME('%Y-%W', day) = STRFTIME('%Y-%W', NEW.day)
+	GROUP BY recipe_id;
+END;