Modpol/modpol_minetest/overrides/interactions.lua

-- INTERACTIONS.LUA (for Minetest)

-- CONTEXTUAL STUFF
-- ================

-- _contexts to enable passing across formspecs
-- https://rubenwardy.com/minetest_modding_book/en/players/formspecs.html#contexts

local _contexts = {}
local function get_context(name)
    local context = _contexts[name] or {}
    _contexts[name] = context
    return context
end
minetest.register_on_leaveplayer(function(player)
    _contexts[player:get_player_name()] = nil
end)

-- UTILITIES
-- =========

-- Function: formspec_list
-- for use generating option lists in formspecs from tables
-- input: table of strings
-- output: a formspec-ready list of the strings
local function formspec_list(array)
   local escaped = {}
   if not array then
      return ""
   end
   for i = 1, #array do
      escaped[i] = minetest.formspec_escape(array[i])
   end
   return table.concat(escaped,",")
end

-- DASHBOARDS
-- ==========

-- Function: modpol.interactions.dashboard(user)
-- Params: user (string)
-- Q: Should this return a menu of commands relevant to the specific user?
-- Output: Displays a menu of commands to the user
-- TODO currently a manually curated list---needs major improvement
function modpol.interactions.dashboard(user)
   -- prepare data
   -- to add: nested orgs map
   local all_orgs = modpol.orgs.list_all()
   local user_orgs = modpol.orgs.user_orgs(user)
   local all_users = modpol.instance:list_members()
   -- set up formspec
    local formspec = {
       "formspec_version[4]",
       "size[10,8]",
       "label[0.5,0.5;MODPOL DASHBOARD]",
       "label[0.5,2;All orgs:]",
       "dropdown[2,1.5;5,0.8;all_orgs;"..formspec_list(all_orgs)..";;]",
       "label[0.5,3;Your orgs:]",
       "dropdown[2,2.5;5,0.8;user_orgs;"..formspec_list(user_orgs)..";;]",
       "label[0.5,4;All users:]",
       "dropdown[2,3.5;5,0.8;all_users;"..formspec_list(all_users)..";;]",
       "button[0.5,7;1.5,0.8;reset_orgs;Reset orgs]",
       "button_exit[8.5,7;1,0.8;close;Close]",
    }
    local formspec_string = table.concat(formspec, "")
    -- present to player
    minetest.show_formspec(user, "modpol:dashboard", formspec_string)
end
-- receive input
minetest.register_on_player_receive_fields(function (player, formname, fields)
      if formname == "modpol:dashboard" then
         local pname = player:get_player_name()
         if nil then
            -- buttons first
         elseif fields.reset_orgs then
            modpol.orgs.reset()
            modpol.instance:add_member(pname)
            modpol.interactions.dashboard(pname)
            
         -- Put all dropdowns at the end
         elseif fields.close then
            minetest.close_formspec(pname, formname)
         elseif fields.all_orgs or fields.user_orgs then
            local org_name = fields.all_orgs or fields.user_orgs
            modpol.interactions.org_dashboard(pname, org_name)
         end
      end
end)


-- Function: modpol.interactions.org_dashboard
-- Params: user (string), org_name (string)
-- Output: Displays a menu of org-specific commands to the user
function modpol.interactions.org_dashboard(user, org_name)
   -- prepare data
   local org = modpol.orgs.get_org(org_name)
   if not org then return nil end
   local is_member = org:has_member(user)
   local membership_toggle = function()
      local toggle_code = ""
      if is_member then
         toggle_code = toggle_code
            ..minetest.formspec_escape("leave")..";"
            ..minetest.formspec_escape("Leave").."]"
      else
         toggle_code = toggle_code
            ..minetest.formspec_escape("join")..";"
            ..minetest.formspec_escape("Join").."]"
      end
      return toggle_code
   end

   -- identify parent
   local parent = modpol.orgs.get_org(org.parent)
   if parent then parent = parent.name
   else parent = "none" end

   -- prepare children menu
   local children = {"View..."}
   for k,v in ipairs(org.children) do
      local this_child = modpol.orgs.get_org(v)
      table.insert(children, this_child.name)
   end

   -- prepare modules menu
   local modules = {"View..."}
   if org.modules then
      for k,v in pairs(org.modules) do
         table.insert(modules, v.slug)
      end
   end

   -- prepare actions menu
   local actions = {"View..."}
   local num_actions = 0
   if org.pending[user] then
      for k,v in pairs(org.pending[user]) do
         local action_string = "[" .. k .. "] " ..
            org.processes[k].name
         table.insert(actions, action_string)
         num_actions = num_actions + 1
      end
   end

   -- set player context
   local user_context = {}
   user_context["current_org"] = org_name
   _contexts[user] = user_context
   -- set up formspec
    local formspec = {
       "formspec_version[4]",
       "size[10,8]",
       "label[0.5,0.5;Org: "..
          minetest.formspec_escape(org_name).."]",
       "label[0.5,1;Parent: "..parent.."]",
       "button[8.5,0.5;1,0.8;"..membership_toggle(),
       "label[0.5,2;Members:]",
       "dropdown[2,1.5;5,0.8;user_orgs;"..formspec_list(org.members)..";;]",
       "label[0.5,3;Children:]",
       "dropdown[2,2.5;5,0.8;children;"..formspec_list(children)..";;]",
       "label[0.5,4;Modules:]",
       "dropdown[2,3.5;5,0.8;modules;"..formspec_list(modules)..";;]",
       "label[0.5,5;Actions ("..num_actions.."):]",
       "dropdown[2,4.5;5,0.8;actions;"..formspec_list(actions)..";;]",
       "button[0.5,7;1,0.8;test_poll;Test poll]",
       "button[2,7;1,0.8;add_child;Add child]",
       "button[3.5,7;1.5,0.8;remove_org;Remove org]",
       "button[8.5,7;1,0.8;back;Back]",
    }
    local formspec_string = table.concat(formspec, "")
    -- present to player
    minetest.show_formspec(user, "modpol:org_dashboard", formspec_string)
end
-- receive input
minetest.register_on_player_receive_fields(function (player, formname, fields)
      if formname == "modpol:org_dashboard" then
         local pname = player:get_player_name()
         local org = modpol.orgs.get_org(_contexts[pname].current_org)
         -- just confirm the org still exists:
         if not org then
            modpol.interactions.message(pname, "Org no longer exists")
            modpol.interactions.dashboard(pname)
            return end
         -- okay, onward
         if nil then
         elseif fields.join then
            org:add_member(pname)
            modpol.interactions.org_dashboard(pname,org.name)
         elseif fields.leave then
            org:remove_member(pname)
            modpol.interactions.dashboard(pname)
         elseif fields.test_poll then
            modpol.interactions.binary_poll_org(
               pname, org.id,
               function(input)
                  modpol.interactions.message_org(
                     pname,
                     org.id,
                     "New response: " .. input)
            end)
         elseif fields.add_child then
            modpol.interactions.text_query(
               pname, "Child org name:",
               function(input)
                  org:add_org(input,pname)
                  modpol.interactions.message_org(
                     pname,
                     org.id,
                     "Child org created: " .. input)
            end)
         elseif fields.remove_org then
            modpol.interactions.message_org(
                     pname,
                     org.id,
                     "Removing org: " .. org.name)
            org:delete()
            modpol.interactions.org_dashboard(pname,org.name)
         elseif fields.back then
            modpol.interactions.dashboard(pname)
            
         -- Put all dropdowns at the end
         -- Receiving modules
         elseif fields.modules
            and fields.modules ~= "View..." then
            local module = fields.modules
            modpol.interactions.binary_poll_user(
               pname,
               modpol.modules[module].name.."\n"..
               modpol.modules[module].desc.."\n"..
               "Proceed?",
               function(input)
                  if input == "Yes" then
                     org:call_module(module, pname)
                  end
            end)
            
         -- Receiving actions
         elseif fields.actions
            and fields.actions ~= "View..." then
            local action = string.match(
               fields.actions,"%[(%d)%]")
            local process = org.processes[tonumber(action)]
            if process then
               org:interact(process.id, pname)
            end

         -- Children
         elseif fields.children
               and fields.children ~= "View..." then
            local org_name = fields.children
            modpol.interactions.org_dashboard(pname, org_name)
         end
      end
end)


-- Function: modpol.interactions.policy_dashboard
-- input: user (string), org_id (int), policy (string)
-- output: opens a dashboard for viewing/editing policy details
-- TODO
function modpol.interactions.policy_dashboard(
      user, org_id, policy)
   modpol.interactions.message(
      user,
      "Not yet implemented: " .. policy)
end


-- INTERACTION FUNCTIONS
-- =====================

-- Function: modpol.interactions.message
-- input: user (string), message (string)
-- output: displays message to specified user
function modpol.interactions.message(user, message)
   if message then
      minetest.chat_send_player(user, message)
   end
end

-- Function: modpol.interactions.text_query
-- Overrides function at modpol/interactions.lua
-- input: user (string), query (string), func (function)
-- output: Applies "func" to user input
function modpol.interactions.text_query(user, query, func)
   -- set up formspec
    local formspec = {
       "formspec_version[4]",
       "size[10,4]",
       "label[0.5,1;", minetest.formspec_escape(query), "]",
       "field[0.5,1.25;9,0.8;input;;]",       
       "button[0.5,2.5;1,0.8;yes;OK]",
    }
    local formspec_string = table.concat(formspec, "")
    -- present to player
    minetest.show_formspec(user, "modpol:text_query", formspec_string)
    -- put func in _contexts
    if _contexts[user] == nil then _contexts[user] = {} end
    _contexts[user]["text_query_func"] = func
end
-- receive fields
minetest.register_on_player_receive_fields(function (player, formname, fields)
      if formname == "modpol:text_query" then
         local pname = player:get_player_name()
         local input = fields.input
         if not input then
            -- no input, do nothing
         else
            local func = _contexts[pname]["text_query_func"]
            if func then
               func(input)
            else
               modpol.interactions.message(pname, "text_query: " .. input)
            end
         end
         minetest.close_formspec(pname, formname)
      end
end)

-- Function: dropdown_query
-- input: user (string), label (string), options (table of strings), func (function)
--    func input: choice (string)
-- output: calls func on user choice
function modpol.interactions.dropdown_query(user, label, options, func)
   -- set up formspec
   local formspec = {
      "formspec_version[4]",
      "size[10,4]",
      "label[0.5,1;"..minetest.formspec_escape(label).."]",
      "dropdown[0.5,1.25;9,0.8;input;"..formspec_list(options)..";;]",
      "button[0.5,2.5;1,0.8;cancel;Cancel]",
   }
   local formspec_string = table.concat(formspec, "")
   -- present to players
   minetest.show_formspec(user, "modpol:dropdown_query", formspec_string)
   -- put func in _contexts
   if _contexts[user] == nil then _contexts[user] = {} end
   _contexts[user]["dropdown_query_func"] = func
end
-- receive fields
minetest.register_on_player_receive_fields(function (player, formname, fields)
      if formname == "modpol:dropdown_query" then
         local pname = player:get_player_name()            
         if fields.cancel == "cancel" then
            -- cancel, do nothing
         else
            local choice = fields.input
            local func = _contexts[pname]["dropdown_query_func"]
            if not choice then
               -- empty, do nothing
            elseif func then
               func(choice)
            else
               modpol.interactions.message(pname, "dropdown_query: " .. choice)
            end
         end
         minetest.close_formspec(pname, formname)
      end
end)

-- Function: modpol.binary_poll_user(user, question, function)
-- Overrides function at modpol/interactions.lua
-- Params: user (string), question (string), func (function)
--   func input: user input (string: y/n)
-- Output: Applies "func" to user input
function modpol.interactions.binary_poll_user(user, question, func)
   -- set up formspec
   local formspec = {
      "formspec_version[4]",
      "size[8,4]",
      "label[0.375,0.5;",minetest.formspec_escape(question), "]",
      "button[1,2.5;1,0.8;yes;Yes]",
      "button[2,2.5;1,0.8;no;No]",
      --TODO can we enable text wrapping?
      --TODO we could use scroll boxes to contain the text
   }
   local formspec_string = table.concat(formspec, "")
   if _contexts[user] == nil then _contexts[user] = {} end
   _contexts[user]["binary_poll_func"] = func
   -- present to player
   minetest.show_formspec(user, "modpol:binary_poll_user", formspec_string)
end
minetest.register_on_player_receive_fields(function (player, formname, fields)
      local pname = player:get_player_name()
      -- modpol:binary_poll
      if formname == "modpol:binary_poll_user" then
         local vote = nil
         if fields.yes then vote = fields.yes
         elseif fields.no then vote = fields.no
         end
         if vote then
            local func = _contexts[pname]["binary_poll_func"]
            if func then func(vote) end
         end
         minetest.close_formspec(pname, formname)
      end
end)