print('hello world')

-- Create all the groups ("-1" means "all groups")
ecCreateGroup(-1)

-- Join all those groups
ecJoinGroup(-1)

-- Wait for all of them to be ready
ecWaitForGroupReady(-1)

-- Begin transmission on group 1 - which we know is the index of the first audio group
ecBeginGroupTx(1)

-- Pause for 5 seconds - we should be transmitting by now so let that go on for 5 second (5,000 milliseconds)
ecSleep(5000)

-- End the transmission on group 1
ecEndGroupTx(1)

ecCreateGroup(-1)
ecJoinGroup(-1)
ecWaitForGroupReady(-1)

-- We'll transmit on group 1 for up to 5 seconds at a time.  We'll do this
-- 250 times, pausing 2 seconds between iterations.
for x = 1, 250 do
        ecBeginGroupTx(1)
        ecWaitForGroupTxStarted(1)
        ecLogInfo('..................... began transmission')
    
        ecSleep(math.random(1000, 5000))
    
        ecEndGroupTx(1)
        ecWaitForGroupTxEnded(1)
        ecLogInfo('..................... ended transmission')
    
        ecSleep(2000)
end

-- Up front, set the "transmit URI" for all audio groups to our awesome James Earl Jones poetry reading with
-- a repeat count of 0
ecSetTxUri(0, '/mysounds/jej-poetry-slam.wav')

ecCreateGroup(-1)
ecJoinGroup(-1)
ecWaitForGroupReady(-1)

-- We'll transmit on group 1 between 20 and 25 seconds at a time so we get to hear more of
-- that terrific voice
for x = 1, 250 do
        ecBeginGroupTx(1)
        ecWaitForGroupTxStarted(1)
    
        ecSleep(math.random(20000, 25000))
    
        ecEndGroupTx(1)
        ecWaitForGroupTxEnded(1)
    
        ecSleep(2000)
end

----------------------------------------------------------------------
-- codectester.lua
--
-- Copyright (c) 2021 Rally Tactical Systems, Inc.
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy of
-- this software and associated documentation files (the "Software"), to deal in
-- the Software without restriction, including without limitation the rights to
-- use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-- of the Software, and to permit persons to whom the Software is furnished to do
-- so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in all
-- copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-- SOFTWARE.
----------------------------------------------------------------------

-- Lua needs to know where to find sources ...
package.path = package.path .. ';../?.lua'

-- Like the json.lua package (see below)
json = require "../json"
os = require "os"

-- Setup some constants (our convention is to make constants all uppercase)
GROUP_TYPE_AUDIO = 1
GROUP_TYPE_PRESENCE = 2
GROUP_TYPE_RAW = 3

GRP_ITERATIONS = 1
GRP_INTERVAL = 500

PTT_ITERATIONS = 2
PTT_TIME = 500
PTT_INTERVAL = 100

-- Our global variables
endOfOperation = false
audioGroups = {}
presenceGroups = {}
rawGroups = {}

-- The codec types (actually the encoders) that Engage supports
codecs = {
        1, 2, 3, 
        10, 11, 12, 13, 14, 15, 16, 17, 
        20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
        30, 31, 32, 33, 34, 35, 36, 37
        }

-- A table of possible framing sizes we'll throw at Engage
framings = {20, 40, 60, 80, 100, 120, 140, 160 }

-- Get the count of groups in the mission
totalGroupCount = ecGetGroupCount()


-- Returns true if a string is nil or ""
function isEmpty(s)
	return s == nil or s == ""
end


-- Divides the groups from the mission into different Lua tables
function setupTables() 
  for x = 1, totalGroupCount, 1 do
    if ecGetGroupType(x - 1) == GROUP_TYPE_AUDIO then
      table.insert(audioGroups, x - 1)

    elseif ecGetGroupType(x - 1) == GROUP_TYPE_PRESENCE then
        table.insert(presenceGroups, x - 1)

    elseif ecGetGroupType(x - 1) == GROUP_TYPE_RAW then
      table.insert(rawGroups, x - 1)

    end
  end
end


-- Returns true if this script should stop
function shouldEndOperation()
  if endOperation then
    return true
  end

  str = ecGetWaitingKeyboardInput()
  if not isEmpty(str) then    
    if str == "q" then
      endOperation = true
    end
  end

  return endOperation
end


-- Try out an encoder and framing combination for a group
function tryThisForCodecTest(groupIndex, encoder, framing)
  -- Get the name of the group for display purposes
  groupName = ecGetGroupName(groupIndex)

  -- Get the group's JSON configiguration
  gc = ecGetGroupJson(groupIndex)

  -- Decode the JSON into a Lua table
  obj = json.decode(gc)

  -- Set the encoder and framing size
  obj["txAudio"]["encoder"] = encoder
  obj["txAudio"]["framingMs"] = framing
  
  -- Encode the JSON (serialize) to a string and set the JSON in the group object
  ecSetGroupJson(groupIndex, json.encode(obj))

  for grpI = 1, GRP_ITERATIONS, 1 do
    if shouldEndOperation() then
      break
    end

    -- Create the group (using the JSON we set above)
    ecCreateGroup(groupIndex)

    -- Join it
    ecJoinGroup(groupIndex)  

    -- Wait for it to be ready (i.e. created, joined, and connected)
    ecWaitForGroupReady(groupIndex)

    -- Hammer away a little on PTT
    for pttI = 1, PTT_ITERATIONS, 1 do
      if shouldEndOperation() then
        break
      end

      -- Print out a message so we know where we are
      ecLogInfo(groupName 
                 .. ", enc:" .. encoder 
                 .. ", fra:" .. framing 
                 .. ", g:" .. grpI .. "/" .. GRP_ITERATIONS 
                 .. ", p:" .. pttI .. "/" .. PTT_ITERATIONS)

      -- Start transmitting
      ecBeginGroupTx(groupIndex)

      -- Keep transmitting for PTT_TIME
      ecSleep(PTT_TIME)

      -- Stop
      ecEndGroupTx(groupIndex)

      -- Wait until PTT has ended
      ecWaitForGroupTxEnded(groupIndex)

      -- Pause a little
      ecSleep(PTT_INTERVAL)
    end

    -- Delete the group
    ecDeleteGroup(groupIndex)

    -- Pause a little
    ecSleep(GRP_INTERVAL)
  end
end


-- Our "main" operation here
function mainForCodecTest()
  -- Make sure we actually have audio groups configured
  if #audioGroups > 0 then

    -- For each group ...
    for g = 1, #audioGroups, 1 do      

      -- .. for each codec ..
      for e = 1, #codecs, 1 do
        -- .. for each framing ..

        for f = 1, #framings, 1 do
          if shouldEndOperation() then
            break            
           end

          -- .. try the combination
          tryThisForCodecTest(audioGroups[g], codecs[e], framings[f], 0)
        end -- f

      end -- e

    end -- g

  else
    ecLogFatal("No audio groups found")
  end
end 


-- Get on to all the presence groups so that any apps monitoring this business can see what's going on
function getOnAllPresenceGroups()
  for x = 1, #presenceGroups, 1 do
    ecCreateGroup(presenceGroups[x])
    ecJoinGroup(presenceGroups[x])    
  end
end 


-- MAIN --------------------------------------------------------------
math.randomseed(ecGetRandom64())
setupTables()
getOnAllPresenceGroups()
mainForCodecTest()

--
-- json.lua
--
-- Copyright (c) 2020 rxi
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy of
-- this software and associated documentation files (the "Software"), to deal in
-- the Software without restriction, including without limitation the rights to
-- use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
-- of the Software, and to permit persons to whom the Software is furnished to do
-- so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in all
-- copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-- SOFTWARE.
--

local json = { _version = "0.1.2" }

-------------------------------------------------------------------------------
-- Encode
-------------------------------------------------------------------------------

local encode

local escape_char_map = {
  [ "\\" ] = "\\",
  [ "\"" ] = "\"",
  [ "\b" ] = "b",
  [ "\f" ] = "f",
  [ "\n" ] = "n",
  [ "\r" ] = "r",
  [ "\t" ] = "t",
}

local escape_char_map_inv = { [ "/" ] = "/" }
for k, v in pairs(escape_char_map) do
  escape_char_map_inv[v] = k
end


local function escape_char(c)
  return "\\" .. (escape_char_map[c] or string.format("u%04x", c:byte()))
end


local function encode_nil(val)
  return "null"
end


local function encode_table(val, stack)
  local res = {}
  stack = stack or {}

  -- Circular reference?
  if stack[val] then error("circular reference") end

  stack[val] = true

  if rawget(val, 1) ~= nil or next(val) == nil then
    -- Treat as array -- check keys are valid and it is not sparse
    local n = 0
    for k in pairs(val) do
      if type(k) ~= "number" then
        error("invalid table: mixed or invalid key types")
      end
      n = n + 1
    end
    if n ~= #val then
      error("invalid table: sparse array")
    end
    -- Encode
    for i, v in ipairs(val) do
      table.insert(res, encode(v, stack))
    end
    stack[val] = nil
    return "[" .. table.concat(res, ",") .. "]"

  else
    -- Treat as an object
    for k, v in pairs(val) do
      if type(k) ~= "string" then
        error("invalid table: mixed or invalid key types")
      end
      table.insert(res, encode(k, stack) .. ":" .. encode(v, stack))
    end
    stack[val] = nil
    return "{" .. table.concat(res, ",") .. "}"
  end
end


local function encode_string(val)
  return '"' .. val:gsub('[%z\1-\31\\"]', escape_char) .. '"'
end


local function encode_number(val)
  -- Check for NaN, -inf and inf
  if val ~= val or val <= -math.huge or val >= math.huge then
    error("unexpected number value '" .. tostring(val) .. "'")
  end
  return string.format("%.14g", val)
end


local type_func_map = {
  [ "nil"     ] = encode_nil,
  [ "table"   ] = encode_table,
  [ "string"  ] = encode_string,
  [ "number"  ] = encode_number,
  [ "boolean" ] = tostring,
}


encode = function(val, stack)
  local t = type(val)
  local f = type_func_map[t]
  if f then
    return f(val, stack)
  end
  error("unexpected type '" .. t .. "'")
end


function json.encode(val)
  return ( encode(val) )
end


-------------------------------------------------------------------------------
-- Decode
-------------------------------------------------------------------------------

local parse

local function create_set(...)
  local res = {}
  for i = 1, select("#", ...) do
    res[ select(i, ...) ] = true
  end
  return res
end

local space_chars   = create_set(" ", "\t", "\r", "\n")
local delim_chars   = create_set(" ", "\t", "\r", "\n", "]", "}", ",")
local escape_chars  = create_set("\\", "/", '"', "b", "f", "n", "r", "t", "u")
local literals      = create_set("true", "false", "null")

local literal_map = {
  [ "true"  ] = true,
  [ "false" ] = false,
  [ "null"  ] = nil,
}


local function next_char(str, idx, set, negate)
  for i = idx, #str do
    if set[str:sub(i, i)] ~= negate then
      return i
    end
  end
  return #str + 1
end


local function decode_error(str, idx, msg)
  local line_count = 1
  local col_count = 1
  for i = 1, idx - 1 do
    col_count = col_count + 1
    if str:sub(i, i) == "\n" then
      line_count = line_count + 1
      col_count = 1
    end
  end
  error( string.format("%s at line %d col %d", msg, line_count, col_count) )
end


local function codepoint_to_utf8(n)
  -- http://scripts.sil.org/cms/scripts/page.php?site_id=nrsi&id=iws-appendixa
  local f = math.floor
  if n <= 0x7f then
    return string.char(n)
  elseif n <= 0x7ff then
    return string.char(f(n / 64) + 192, n % 64 + 128)
  elseif n <= 0xffff then
    return string.char(f(n / 4096) + 224, f(n % 4096 / 64) + 128, n % 64 + 128)
  elseif n <= 0x10ffff then
    return string.char(f(n / 262144) + 240, f(n % 262144 / 4096) + 128,
                       f(n % 4096 / 64) + 128, n % 64 + 128)
  end
  error( string.format("invalid unicode codepoint '%x'", n) )
end


local function parse_unicode_escape(s)
  local n1 = tonumber( s:sub(1, 4),  16 )
  local n2 = tonumber( s:sub(7, 10), 16 )
   -- Surrogate pair?
  if n2 then
    return codepoint_to_utf8((n1 - 0xd800) * 0x400 + (n2 - 0xdc00) + 0x10000)
  else
    return codepoint_to_utf8(n1)
  end
end


local function parse_string(str, i)
  local res = ""
  local j = i + 1
  local k = j

  while j <= #str do
    local x = str:byte(j)

    if x < 32 then
      decode_error(str, j, "control character in string")

    elseif x == 92 then -- `\`: Escape
      res = res .. str:sub(k, j - 1)
      j = j + 1
      local c = str:sub(j, j)
      if c == "u" then
        local hex = str:match("^[dD][89aAbB]%x%x\\u%x%x%x%x", j + 1)
                 or str:match("^%x%x%x%x", j + 1)
                 or decode_error(str, j - 1, "invalid unicode escape in string")
        res = res .. parse_unicode_escape(hex)
        j = j + #hex
      else
        if not escape_chars[c] then
          decode_error(str, j - 1, "invalid escape char '" .. c .. "' in string")
        end
        res = res .. escape_char_map_inv[c]
      end
      k = j + 1

    elseif x == 34 then -- `"`: End of string
      res = res .. str:sub(k, j - 1)
      return res, j + 1
    end

    j = j + 1
  end

  decode_error(str, i, "expected closing quote for string")
end


local function parse_number(str, i)
  local x = next_char(str, i, delim_chars)
  local s = str:sub(i, x - 1)
  local n = tonumber(s)
  if not n then
    decode_error(str, i, "invalid number '" .. s .. "'")
  end
  return n, x
end


local function parse_literal(str, i)
  local x = next_char(str, i, delim_chars)
  local word = str:sub(i, x - 1)
  if not literals[word] then
    decode_error(str, i, "invalid literal '" .. word .. "'")
  end
  return literal_map[word], x
end


local function parse_array(str, i)
  local res = {}
  local n = 1
  i = i + 1
  while 1 do
    local x
    i = next_char(str, i, space_chars, true)
    -- Empty / end of array?
    if str:sub(i, i) == "]" then
      i = i + 1
      break
    end
    -- Read token
    x, i = parse(str, i)
    res[n] = x
    n = n + 1
    -- Next token
    i = next_char(str, i, space_chars, true)
    local chr = str:sub(i, i)
    i = i + 1
    if chr == "]" then break end
    if chr ~= "," then decode_error(str, i, "expected ']' or ','") end
  end
  return res, i
end


local function parse_object(str, i)
  local res = {}
  i = i + 1
  while 1 do
    local key, val
    i = next_char(str, i, space_chars, true)
    -- Empty / end of object?
    if str:sub(i, i) == "}" then
      i = i + 1
      break
    end
    -- Read key
    if str:sub(i, i) ~= '"' then
      decode_error(str, i, "expected string for key")
    end
    key, i = parse(str, i)
    -- Read ':' delimiter
    i = next_char(str, i, space_chars, true)
    if str:sub(i, i) ~= ":" then
      decode_error(str, i, "expected ':' after key")
    end
    i = next_char(str, i + 1, space_chars, true)
    -- Read value
    val, i = parse(str, i)
    -- Set
    res[key] = val
    -- Next token
    i = next_char(str, i, space_chars, true)
    local chr = str:sub(i, i)
    i = i + 1
    if chr == "}" then break end
    if chr ~= "," then decode_error(str, i, "expected '}' or ','") end
  end
  return res, i
end


local char_func_map = {
  [ '"' ] = parse_string,
  [ "0" ] = parse_number,
  [ "1" ] = parse_number,
  [ "2" ] = parse_number,
  [ "3" ] = parse_number,
  [ "4" ] = parse_number,
  [ "5" ] = parse_number,
  [ "6" ] = parse_number,
  [ "7" ] = parse_number,
  [ "8" ] = parse_number,
  [ "9" ] = parse_number,
  [ "-" ] = parse_number,
  [ "t" ] = parse_literal,
  [ "f" ] = parse_literal,
  [ "n" ] = parse_literal,
  [ "[" ] = parse_array,
  [ "{" ] = parse_object,
}


parse = function(str, idx)
  local chr = str:sub(idx, idx)
  local f = char_func_map[chr]
  if f then
    return f(str, idx)
  end
  decode_error(str, idx, "unexpected character '" .. chr .. "'")
end


function json.decode(str)
  if type(str) ~= "string" then
    error("expected argument of type string, got " .. type(str))
  end
  local res, idx = parse(str, next_char(str, 1, space_chars, true))
  idx = next_char(str, idx, space_chars, true)
  if idx <= #str then
    decode_error(str, idx, "trailing garbage")
  end
  return res
end


return json