Add functionality to copy a slide

server/app/database/controller/copy.py

+"""
+This file contains functionality to copy and duplicate data to the database.
+"""
+
+from app.database.controller import add, utils
+from app.database.models import Question, Slide
+from flask_sqlalchemy import utils
+
+
+def _question(item_question_old, slide_id):
+    """
+    Internal function. Makes a copy of the provided question item to the
+    specified slide. Does not copy team, question answers or alternatives.
+    """
+
+    item_question_new = add.db_add(
+        Question(
+            item_question_old.name,
+            item_question_old.total_score,
+            item_question_old.type_id,
+            slide_id,
+        )
+    )
+
+    # TODO: Add question alternatives
+    # for item_alternatives in item_question_old.alternatives:
+    #     dbc.add.alternatives()
+
+    return item_question_new
+
+
+def _component(item_component, item_slide_new):
+    """
+    Internal function. Makes a copy of the provided
+    component item to the specified slide.
+    """
+
+    add.component(
+        item_component.type_id,
+        item_slide_new,
+        item_component.data,
+        item_component.x,
+        item_component.y,
+        item_component.w,
+        item_component.h,
+    )
+
+
+def slide(item_slide_old):
+    """
+    Deep copies a slide to the same competition.
+    Does not copy team, question answers or alternatives.
+    """
+
+    order = Slide.query.filter(
+        Slide.competition_id == item_slide_old.item_competition.id
+    ).count()  # first element has index 0
+    item_slide_new = add.db_add(Slide(order, item_slide_old.item_competition.id))
+
+    # Copy all fields
+    item_slide_new.title = item_slide_old.title
+    item_slide_new.body = item_slide_old.body
+    item_slide_new.timer = item_slide_old.timer
+    item_slide_new.settings = item_slide_old.settings
+
+    # TODO: Add background image
+
+    for item_component in item_slide_old.components:
+        _component(item_slide_new, item_component)
+
+    for item_question in item_slide_old.questions:
+        _question(item_question, item_slide_new.id)
+
+    utils.commit_and_refresh(item_slide_new)
+    return item_slide_new