Add Duplicate Interrupt button to Edit Interrupt window

locale/en/caravan.cfg

@@ -51,6 +51,7 @@ the-inventory-is-empty=The inventory is empty.
 add-interrupt-frame-title=Add interrupt
 edit-interrupt-frame-title=Edit interrupt
 save-interrupt=Save interrupt
+duplicate-interrupt=Duplicate interrupt
 delete-interrupt=Delete interrupt
 confirm-deletion=Are you sure?
 cancel-deletion=Cancel deletion

scripts/caravan/event-handlers/interrupts.lua

@@ -338,6 +338,37 @@ gui_events[defines.events.on_gui_click]["py_edit_interrupt_confirm_button"] = fu
     storage.edited_interrupts[event.player_index] = nil
 end
 
+gui_events[defines.events.on_gui_click]["py_duplicate_interrupt_button"] = function(event)
+    local player = game.get_player(event.player_index)
+    local edited_interrupt = storage.edited_interrupts[event.player_index]
+
+    -- edge case: need to check the rename textfield when 'Duplicate interrupt' is pressed instead of enter
+    local textfield = event.element.parent.py_edit_interrupt_textfield
+    if string.len(textfield.text) ~= 0 and textfield.text ~= edited_interrupt.name then
+        edited_interrupt.name = textfield.text
+    end
+
+    local interrupt_copy_name = edited_interrupt.name
+    while storage.interrupts[interrupt_copy_name] ~= nil do
+        interrupt_copy_name = interrupt_copy_name .. "*"
+    end
+
+    storage.interrupts[interrupt_copy_name] = table.deepcopy(edited_interrupt)
+    storage.interrupts[interrupt_copy_name].name = interrupt_copy_name
+
+    local unit_number = CaravanGui.get_gui(player).tags.unit_number
+    assert(unit_number)
+    local caravan_data = storage.caravans[unit_number]
+    table.insert(caravan_data.interrupts, interrupt_copy_name)
+    CaravanScheduleGui.update_schedule_pane(player)
+
+    if player.gui.screen.edit_interrupt_gui then
+        player.gui.screen.edit_interrupt_gui.destroy()
+        local edit_interrupt_gui = EditInterruptGui.build(player.gui.screen, storage.interrupts[interrupt_copy_name])
+        CaravanUtils.restore_gui_location(edit_interrupt_gui, window_location)
+    end
+end
+
 gui_events[defines.events.on_gui_click]["py_delete_interrupt_button"] = function(event)
     local element = event.element
     local removed_interrupt = element.tags.interrupt_name
@@ -366,6 +397,7 @@ gui_events[defines.events.on_gui_click]["py_delete_interrupt_button"] = function
         element.parent.py_delete_interrupt_cancel.visible = true
         element.parent.py_delete_interrupt_confirm.visible = true
         element.parent.py_interrupt_count_label.visible = false
+        element.parent.py_duplicate_interrupt_button.visible = false
     end
 end
 
@@ -375,6 +407,7 @@ gui_events[defines.events.on_gui_click]["py_delete_interrupt_cancel"] = function
     element.parent.py_interrupt_count_label.visible = true
     element.parent.py_delete_interrupt_cancel.visible = false
     element.parent.py_delete_interrupt_confirm.visible = false
+    element.parent.py_duplicate_interrupt_button.visible = true
 end
 
 gui_events[defines.events.on_gui_click]["py_edit_interrupt_condition_move_up_button"] = function(event)

scripts/caravan/gui/edit_interrupt.lua

@@ -61,6 +61,7 @@ function P.build_subheader_frame(parent)
     -- work out how many caravans have this interrupt and store in the element tags for use in on_click
     local relevant_caravans = caravans_with_interrupt(edited_interrupt.name)
     flow.add {type = "label", name = "py_interrupt_count_label", caption = {"caravan-gui.interrupt-count", table_size(relevant_caravans)}, style = "clickable_squashable_label", tags = {name = edited_interrupt.name, ids = relevant_caravans}}.style.horizontal_align = "right"
+    flow.add {type = "sprite-button", name = "py_duplicate_interrupt_button", style = "tool_button", sprite = "utility/copy", tooltip = {"caravan-gui.duplicate-interrupt"}}
     -- handle deletion
     flow.add {type = "label", visible = false, name = "py_delete_interrupt_confirm", caption = {"caravan-gui.confirm-deletion"}}
     flow.add {type = "sprite-button", name = "py_delete_interrupt_button", style = "tool_button_red", sprite = "utility/trash", tooltip = {"caravan-gui.delete-interrupt"}, tags = {interrupt_name = edited_interrupt.name}}