-- INTERACTIONS.LUA (CLI)

-- User interaction functions for Modpol
-- Called by modpol.lua

modpol.interactions = {}


-- 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
-- TKTK currently just prints all of modpol---needs major improvement
function modpol.interactions.dashboard(user)
   -- adds user to root org if not already in it
   if not modpol.instance:has_member(user) then
      modpol.instance:add_member(user)
   end

   local all_users = modpol.instance:list_members()

   print('\n-=< MODPOL DASHBOARD >=-')
   print('All orgs: (user orgs indicated by *)')
   for id, org in ipairs(modpol.orgs.array) do
      if type(org) == "table" then
         local indicator = ""
         if org:has_member(user) then indicator = "*" end
         print('['..id..'] '..indicator..org.name)
      end
   end

   -- pending list
   local user_pending = {}
   local user_pending_count = 0
   for k,v in ipairs(modpol.orgs.array) do
      if v.pending and v.pending[user] then
         if modpol.util.num_pairs(v.pending[user]) ~= 0 then
            table.insert(user_pending, v.name)
            user_pending_count = user_pending_count + 1
         end
      end
   end
   
   print('Pending actions in: '..table.concat(user_pending,', '))

   print('All users: ' .. table.concat(all_users, ', '))
   print()

   print("Commands: (O)rg, (U)ser, (R)eset, Enter to close")

   local sel = io.read()

   if sel == "O" or sel == "o" then
      print('Access which org id?')
      sel = io.read()
      print()
      if modpol.orgs.array[tonumber(sel)] then
         local sel_org = modpol.orgs.array[tonumber(sel)].name
         modpol.interactions.org_dashboard(user, sel_org)
      else 
         print("Org id not found")
         modpol.interactions.dashboard(user)
      end   
      
   elseif sel == "U" or sel == "u" then
      print("Access which user?")
      sel = io.read()
      print()
      if modpol.instance:has_member(sel) then
         modpol.interactions.user_dashboard(
            user, sel,
            function()
               modpol.interactions.dashboard(user)
            end
         )

      elseif sel == "" then
         return
         
      else
         print("User name not found")
         modpol.interactions.dashboard(user)
      end
   elseif sel == "R" or sel == "r" then
      modpol.instance.members = {}
      modpol.orgs.reset()
      print("Orgs and users reset")
      modpol.interactions.dashboard(user)
   else
      print("Invalid input, try again")
      modpol.interactions.dashboard(user)
   end
end
   

-- Function: modpol.interactions.org_dashboard
-- Params: user (string), org_string (string or id)
-- Output: Displays a menu of org-specific commands to the user
function modpol.interactions.org_dashboard(user, org_string)
   local org = modpol.orgs.get_org(org_string)
   if not org then return nil end

   -- identify parent
   local parent = ""
   if org.id == 1 then
      parent = "none"
   else
      parent = modpol.orgs.get_org(org.parent).name
   end

   -- identify children
   local children = {}
   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 = {}
   if org.modules then
      for k,v in pairs(org.modules) do
         if not v.hide then -- hide utility modules
            local module_entry = v.slug
            table.insert(modules, module_entry)
         end
      end
   end
   table.sort(modules)

   -- list pending
   local process_msg = #org.processes .. " total processes"
   if org.pending[user] then
      process_msg = process_msg .. " (" ..
         modpol.util.num_pairs(org.pending[user]) .. " pending)"
   else
      process_msg = process_msg .. " (0 pending)"
   end
   
   -- set up output
   print('\n-=< ORG DASHBOARD >=-')
   print("Org: " .. org.name)
   print("Parent: " .. parent)
   print("Members: " .. table.concat(org.members, ", "))
   print("Child orgs: " .. table.concat(children, ", "))
   print("Modules: " .. table.concat(modules, ", "))
   print("Pending: " .. process_msg)
   print()
   print("Commands: (M)odules, (P)ending, (B)ack")
   
   local sel = io.read()
   print()

   if sel == 'm' or sel == 'M' then
      print("Type module name: ")
      local module_sel = io.read()
      print()
      local module_result = false
      for k,v in ipairs(modules) do
         if v == module_sel then
            module_result = true
         end
      end
      if module_result then
         org:call_module(module_sel, user)
      else
         print("Error: Module not found.")
      end
   
   elseif sel == 'p' or sel == 'P' then
      local processes = {}
      print("All processes: (* indicates pending)")
      for i,v in ipairs(org.processes) do
         local active = ''
         if org.pending[user] then
            if org.pending[user][v.id] then
               active = '*'
            end
         end
         print("["..v.id.."] "..v.slug..active)
      end
      print()
      print("Interact with which one (use [id] number)?")
      local to_interact = io.read()
      local process = org.processes[tonumber(to_interact)]
      if not process then return end
      if org:has_pending_actions(user) then
         if org.pending[user][process.id] then
            org:interact(process.id, user)
         end
      end
   elseif sel == 'b' or sel == 'B' then
      modpol.interactions.dashboard(user)
   else
      print("Command not found")
      modpol.interactions.org_dashboard(user, org.name)
   end
end

--- Function: modpol.interactions.user_dashboard
-- Displays a dashboard about a particular user
-- @param viewer Name of user viewing the dashboard (string)
-- @param user Name of user being viewed (string)
-- @param completion Optional function to call on Done button
function modpol.interactions.user_dashboard(viewer, user, completion)
   local user_orgs = {}
   local user_modules = {}

   print("\n-=< USER DASHBOARD: "..user.." >=-")
   print("User's orgs:")
   for id, org in ipairs(modpol.orgs.array) do
      if type(org) == "table" then
         if org:has_member(user) then 
         print(org.name)
         end
      end
   end

   print()
   print("Commands: (M)essage user, Enter when done")
   local sel = io.read()

   if sel == "M" or sel == "m" then
      modpol.interactions.message_user(
         viewer, user)
      completion()
   else
      completion()
   end
end


-- buttons: message, done

-- INTERACTION PRIMITIVES
-- ======================

-- Function: modpol.interactions.message
-- Produces a brief message to a user
-- input: user (string), message (string)
-- output: prints message to CLI
function modpol.interactions.message(user, message)
   print(user .. ": " .. message)
end

--- Function: modpol.interactions.message_user
-- Gets and sends a message from one user to another
-- @param sender Name of user sending (string)
-- @param recipient Name of user receiving (string)
function modpol.interactions.message_user(sender, recipient)
   print("Enter your message for "..recipient..":")
   local sel = io.read()
   modpol.interactions.message(
      recipient,
      sel.." [from "..sender.."]")
end

--- Function: modpol.interactions.display
-- Displays complex data to a user
-- @param user Name of target user (string)
-- @param message Content of message (string or table of strings)
-- @param done Optional function for what happens when user is done
function modpol.interactions.display(user, message, completion)
   local output = ""
   if type(message) == table then
      output = table.concat(message,"\n")
   elseif type(message) == string then
      output = message
   elseif type(message) == number then
      output = message
   else
      return nil, "Error: message not typed for display"
   end
   print(message)
   print("\nEnter to continue")
   io.read()
   if completion then completion() else
      modpol.intereactions.dashboard(user)
   end
end


-- Function: modpol.interactions.text_query
-- input: User (string), Query (string), func (function)
--   func input: user input (string)
-- output: Applies "func" to user input
function modpol.interactions.text_query(user, query, func)
   print(user .. ": " .. query)
   answer = io.read()
   func(answer)
end

-- Function: dropdown_query
-- input: user (string), label (string), options (table of strings), func(choice) (function)
--   func input: choice (string)
-- output: calls func on choice
function modpol.interactions.dropdown_query(user, label, options, func)
   -- set up options
   local options_display = ""
   local options_number = 0
   for k,v in ipairs(options) do
      options_display = options_display .. k .. ". " ..
         options[k] .. "\n"
      options_number = options_number + 1
   end
   options_display = options_display .. "Select number:"
   if options_number == 0 then
      print("Error: No options given for dropdown")
      return nil      
   end
   -- begin displaying
   print(user .. ": " .. label)
   print(options_display)
   -- read input and produce output
   local answer
   answer = io.read()
   answer = tonumber(answer)
   if answer then
      if answer >= 1 and answer <= options_number then
         print("Selection: " .. options[answer])
         func(options[answer])
      else
         print("Error: Not in dropdown range")
         return nil
      end
   else
      print("Error: Must be a number")
      return nil
   end
end

-- Function: modpol.binary_poll_user(user, question)
-- 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)
   local query = "Poll for " .. user .. " (y/n): ".. question
   local answer
   repeat
      print(query)
      answer = io.read()
   until answer == "y" or answer == "n"
   if answer == "y" then
      modpol.interactions.message(user, "Response recorded")
      func("Yes")
   elseif answer == "n" then
      modpol.interactions.message(user, "Response recorded")
      func("No")
   else
      modpol.interactions.message(user, "Error: invalid response")
   end
end

-- COMPLEX INTERACTIONS
-- ====================

-- Function: modpol.interactions.message_org
-- input: initiator (string), org (number or string), message (string)
-- output: broadcasts message to all org members
function modpol.interactions.message_org(initiator, org, message)
   local this_org = modpol.orgs.get_org(org)
   local users = this_org:list_members()
   for k,v in ipairs(users) do
      modpol.interactions.message(v, message)
   end
end

-- Function: modpol.interactions.binary_poll_org
-- input: initator (user string), org_id (number)
-- output: gets question from initiator, asks all org members, broadcasts answers


-- TESTING

--testing command
function modpol.msg(text)
   modpol.interactions.message("TEST MSG: ",text)
end