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     1 function util.add_support(initiative_id, draft_id)
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     2 
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     3   local initiative = Initiative:new_selector():add_where{ "id = ?", initiative_id }:single_object_mode():exec()
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     4 
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     5   -- TODO important m1 selectors returning result _SET_!
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     6   local issue = initiative:get_reference_selector("issue"):for_share():single_object_mode():exec()
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     7 
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     8   local member = app.access_token and app.access_token.member or app.session and app.session.member
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     9   if not member then
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    10     slot.put_into("error", "no valid session")
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    11     return false
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    12   end
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    13 
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    14   if not member:has_voting_right_for_unit_id(issue.area.unit_id) then
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    15     slot.put_into("error", _"No voting rights.")
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    16     return false
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    17   end
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    18 
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    19   if issue.closed then
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    20     slot.put_into("error", _"This issue is already closed.")
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    21     return false
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    22   elseif issue.fully_frozen then
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    23     slot.put_into("error", _"Voting for this issue has already begun.")
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    24     return false
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    25   elseif 
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    26     (issue.half_frozen and issue.phase_finished) or
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    27     (not issue.accepted and issue.phase_finished) 
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    28   then
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    29     slot.put_into("error", _"Current phase is already closed.")
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    30     return false
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    31   end
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    32 
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    33   if initiative.revoked then
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    34     slot.put_into("error", _"This initiative is revoked")
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    35     return false
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    36   end
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    37 
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    38   local member = app.session.member
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    39 
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    40   local supporter = Supporter:by_pk(initiative.id, member.id)
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    41 
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    42   local last_draft = Draft:new_selector()
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    43     :add_where{ "initiative_id = ?", initiative.id }
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    44     :add_order_by("id DESC")
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    45     :limit(1)
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    46     :single_object_mode()
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    47     :exec()
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    48     
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    49   if draft_id and draft_id ~= last_draft.id then
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    50     slot.select("error", function()
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    51       ui.tag{ content = _"The initiative draft has been updated again in the meanwhile, support not updated!" }
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    52     end)
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    53     return false
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    54   end
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    55 
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    56   if not supporter then
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    57     supporter = Supporter:new()
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    58     supporter.member_id = member.id
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    59     supporter.initiative_id = initiative.id
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    60     supporter.draft_id = last_draft.id
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    61     supporter:save()
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    62   elseif supporter.draft_id ~= last_draft.id then
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    63     supporter.draft_id = last_draft.id
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    64     supporter:save()
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    65     slot.put_into("notice", _"Your support has been updated to the latest draft")
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    66   else
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    67     slot.put_into("notice", _"You are already supporting the latest draft")
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    68   end
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    69 
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    70   return true
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    71 
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    72 end
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    73 
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