launchPlatform = {}
launchPlatform.version = "0.0.0"
launchPlatform.requiredLibs = {
	"dcsCommon",
	"cfxZones", 
}
launchPlatform.zones = {}
launchPlatform.redLaunchers = {}
launchPlatform.blueLaunchers = {}

-- weapon types currently known 
-- 52613349374 = tomahawk 

function launchPlatform.addLaunchPlatform(theZone)
	launchPlatform.zones[theZone.name] = theZone
	if theZone.coa == 1 or theZone.coa == 0 then 
		launchPlatform.redLaunchers[theZone.name] = theZone
	end 
	if theZone.coa == 2 or theZone.coa == 0 then 
		launchPlatform.blueLaunchers[theZone.name] = theZone 
	end 
	
end

function launchPlatform.readLaunchPlatform(theZone)
	theZone.coa = theZone:getCoalitionFromZoneProperty("coalition", 0)
	theZone.impactRadius = theZone:getNumberFromZoneProperty("radius", 1000)
	if theZone:hasProperty("salvos") then 
		theZone.num = theZone:getNumberFromZoneProperty("salvos", 1)
	end 
	if theZone:hasProperty("salvo") then 
		theZone.num = theZone:getNumberFromZoneProperty("salvo", 1)
	end 
	-- possible extensions: missile. currently tomahawk launched from a missile cruiser that beams in and vanishes later 
	-- later versions could support SCUDS and some long-range arty, 
	-- perhaps even aircraft 

end

-- note - the tomahawks don't care who they belong to, we do not 
-- need them to belong to anyone, it may be a visibility thing though 

function launchPlatform.launchForPlatform(coa, theZone, tgtPoint, tgtZone)
	local launchPoint = theZone:createRandomPointInZone()
	local gData = launchPlatform.createData(launchPoint, tgtPoint, tgtZone, theZone.impactRadius, theZone.name, theZone.num)
	return gData 
end

function launchPlatform.launchAtTargetZone(coa, tgtZone, theType) -- gets closest platform for target 
	-- type currently not supported 
	local platforms = launchPlatform.redLaunchers
	if coa == 2 then platforms = launchPlatform.blueLaunchers end 
	local cty = dcsCommon.getACountryForCoalition(coa)
	
	-- get closest launcher for target
	local tgtPoint = tgtZone:getPoint() 
	local src, dist = cfxZones.getClosestZone(tgtPoint, platforms)
	trigger.action.outText("+++LP: chosen <" .. src.name .. "> as launch platform", 30)
	
	local theLauncher = launchPlatform.launchForPlatform(coa, src, tgtPoint, tgtZone)
	if not theLauncher then 
		trigger.action.outText("NO LAUNCHER", 30)
		return nil 
	end 
	-- if type is tomahawk, the platform is ship = 3
	local theGroup = coalition.addGroup(cty, 3, theLauncher)
	if not theGroup then 
		trigger.action.outText("!!!!!!!!!!!!!NOPE", 30)
		return
	end 
	-- we remove the group in some time 
	local now = timer.getTime()
	timer.scheduleFunction(launchPlatform.asynchRemovePlatform, theGroup:getName(), now + 300)
end 

function launchPlatform.asynchRemovePlatform(args)
	trigger.action.outText("LP: asynch remove for group <" .. args .. ">", 30)
	local theGroup = Group.getByName(args)
	if not theGroup then return end 
	Group.destroy(theGroup)
end 

function launchPlatform.createData(thePoint, theTarget, targetZone, radius, name, num, wType)
	-- if present, we can use targetZone with some intelligence 
	if not thePoint then 
		trigger.action.outText("NO POINT", 30)
		return nil 
	end 
	if not theTarget then 
		trigger.action.outText("NO TARGET", 30)
		return nil 
	end 
	
	if not wType then wType = 52613349374 end 
	if not radius then radius = 1000 end 
	local useQty = true 
	if not num then num = 15 end 
	if num > 30 then num = 30 end -- max 30 missiles 
	
	if not name then name = "launcherDML" end 
	local gData = {
		["visible"] = false,
		["tasks"] = {},
		["uncontrollable"] = false,
		["route"] = {
			["points"] = {
				[1] = {
					["alt"] = 0,
					["type"] = "Turning Point",
					["ETA"] = 0,
					["alt_type"] = "BARO",
					["formation_template"] = "",
					["y"] = thePoint.z,
					["x"] = thePoint.x, 
					["ETA_locked"] = true,
					["speed"] = 0,
					["action"] = "Turning Point",
					["task"] = {
						["id"] = "ComboTask",
						["params"] = {
							["tasks"] = {
								[1] = {
									["number"] = 1,
									["auto"] = false,
									["id"] = "FireAtPoint",
									["enabled"] = true,
									["params"] = {
										["y"] = theTarget.z, 
										["x"] = theTarget.x, 
										["expendQtyEnabled"] = true,
										["alt_type"] = 1,
										["templateId"] = "",
										["expendQty"] = 2,
										["weaponType"] = wType,
										["zoneRadius"] = radius,
									}, -- end of ["params"]
								}, -- end of [1]
							}, -- end of ["tasks"]
						}, -- end of ["params"]
					}, -- end of ["task"]
					["speed_locked"] = true,
				}, -- end of [1]
			}, -- end of ["points"]
		}, -- end of ["route"]
		["hidden"] = false,
		["units"] = {
			[1] =  {
				["modulation"] = 0,
				["skill"] = "Average",
				["type"] = "USS_Arleigh_Burke_IIa",
				["y"] = thePoint.z, 
				["x"] = thePoint.x, 
				["name"] = dcsCommon.uuid(name),
				["heading"] = 2.2925180610373,
				["frequency"] = 127500000,
			}, -- end of [1]
		}, -- end of ["units"]
		["y"] = thePoint.z, 
		["x"] = thePoint.x, 
		["name"] = dcsCommon.uuid(name),
		["start_time"] = 0,
	}
	
	-- now create the tasks block replacements
	-- create random target locations inside 
	-- target point with radius and launch 2 per salvo 
	-- perhaps add some inteligence to target resource points 
	-- if inside camp 
	local hiPrioTargets
	if targetZone and targetZone.cloners and #targetZone.cloners > 0 then 
		trigger.action.outText("+++LP: detected <" .. targetZone.name .. "> is camp with <" .. #targetZone.cloners .. "> res-points, re-targeting hi-prio", 30)
		hiPrioTargets = targetZone.cloners 
		radius = radius / 10 -- much smaller error 
	end 
	local tasks = {}
	for i=1, num do 
		local dp = dcsCommon.randomPointInCircle(radius, 0)
		if hiPrioTargets then 
			-- choose one of the 
			local thisCloner = dcsCommon.pickRandom(hiPrioTargets)
			local tp = thisCloner:getPoint()
			dp.x = dp.x + tp.x 
			dp.z = dp.z + tp.z 

		else 
			dp.x = dp.x + theTarget.x 
			dp.z = dp.z + theTarget.z 
		end 
		local telem = {
			["number"] = i,
			["auto"] = false,
			["id"] = "FireAtPoint",
			["enabled"] = true,
			["params"] = {
				["y"] = dp.z, 
				["x"] = dp.x, 
				["expendQtyEnabled"] = true,
				["alt_type"] = 1,
				["templateId"] = "",
				["expendQty"] = 1,
				["weaponType"] = wType,
				["zoneRadius"] = radius,
			}, -- end of ["params"]
		} -- end of [1]
		-- table.insert(tasks, telem)
		tasks[i] = telem
	end 
	
	-- now replace old task with new 
	gData.route.points[1].task.params.tasks = tasks 
	return gData
end

--
-- start up 
--
function launchPlatform.readConfigZone()
	local theZone = cfxZones.getZoneByName("launchPlatformConfig") 
	if not theZone then 
		theZone = cfxZones.createSimpleZone("launchPlatformConfig") 
	end 
	launchPlatform.verbose = theZone.verbose 
end

		
function launchPlatform.start()
-- lib check
	if not dcsCommon.libCheck then 
		trigger.action.outText("cfx launchPlatform requires dcsCommon", 30)
		return false 
	end 
	if not dcsCommon.libCheck("cfx launchPlatform", launchPlatform.requiredLibs) then
		return false 
	end
	
	-- read config 
	launchPlatform.readConfigZone()
	
	-- process launchPlatform Zones 
	local attrZones = cfxZones.getZonesWithAttributeNamed("launchPlatform")
	for k, aZone in pairs(attrZones) do 
		launchPlatform.readLaunchPlatform(aZone) -- process attributes
		launchPlatform.addLaunchPlatform(aZone) -- add to list
	end
		
	-- say hi 
	trigger.action.outText("launchPlatform v" .. launchPlatform.version .. " started.", 30)
	return true 
end

if not launchPlatform.start() then 
	trigger.action.outText("launchPlatform failed to start.", 30)
	launchPlatform = nil 
end