#!/usr/bin/lua

require "uci"

cursor = uci.cursor()

archive_dir = uci.get("weathermon","process","archive_dir")

require "wm_util"

command = url_decode(os.getenv('QUERY_STRING'))

print("Content-Type: text/plain\r\n")

if command == "state" or command == "" or not command then
  print(get_file_content(uci.get("weathermon","process","dump_file")))

elseif command == "props" then
  print(get_file_content("/www/meteo/properties.json"))

elseif command == "years" then
  json = require "json"
  local result = list_dir(archive_dir)
  table.sort(result, function(a, b) return a > b; end)
  print(json.encode(result))

elseif startswith(command,"months/") then
  json = require "json"
  local year = string.match(command,"months/(%d+)")
  local result = list_dir(archive_dir.."/"..year)
  table.sort(result, function(a, b) return a > b; end)
  print(json.encode(result))

elseif startswith(command,"days/") then
  json = require "json"
  local year,month = string.match(command,"days/(%d+)/(%d+)")
  local result = list_dir(archive_dir.."/"..year.."/"..month)
  table.sort(result, function(a, b) return a > b; end)
  print(json.encode(result))

elseif startswith(command,"sensors/") then
  json = require "json"
  local year,month,day = string.match(command,"sensors/(%d+)/(%d+)/(%d+)")
  local files = list_dir(archive_dir.."/"..year.."/"..month.."/"..day)
  result = {}
  for key,value in pairs(files) do
    local id, sensor, param = string.match(value,"(%w+)%.(%w+)%.(%w+).json")
    if id then
      result[#result+1] = id.."."..sensor.."."..param
    end  
  end
  table.sort(result)
  print(json.encode(result))

elseif startswith(command,"list/") then

  sensor = string.sub(command,string.len("list/")+1)
  lfs = require "lfs"
  json = require "json"
  dir = uci.get("weathermon","process","working_dir").."/www"
  
  params = {}
  
  for name in lfs.dir(dir) do
    param=name:match(devid.."\."..sensor.."\.(%w+)\.json")
    if param then
      params[#params+1] = param
    end  
  end
  
  print(json.encode(params))  

elseif startswith(command,"get/") then

  sensor_path=string.sub(command,string.len("get/")+1)
  devid,sensor,param = sensor_path:match("(%w+)/(%w+)/(.+)")

  if param=="*" then

    lfs = require "lfs"
    dir = uci.get("weathermon","process","working_dir").."/www"

    result = ""

    for name in lfs.dir(dir) do
      param=name:match(devid.."\."..sensor.."\.(%w+)\.json")
      if param then
        content = "\""..param.."\":"..get_file_content(dir.."/"..name)
        if result=="" then
          result = content
        else
          result = result..","..content
        end  
      end  
    end

    print("{"..result.."}")

  else
    print(get_file_content(uci.get("weathermon","process","working_dir").."/www/"..devid.."."..sensor.."."..param..".json"))
  end  

elseif startswith(command,"get-archive/") then

  local sensor_path=string.sub(command,string.len("get-archive/")+1)
  local year,month,day,devid,sensor,param = sensor_path:match("(%d+)/(%d+)/(%d+)/(%w+)/(%w+)/(%w+)")

  print(get_file_content(archive_dir.."/"..year.."/"..month.."/"..day.."/"..devid.."."..sensor.."."..param..".json"))

end