IMPORT util
IMPORT com
IMPORT os
IMPORT security
IMPORT XML


CONSTANT dpy_verb=TRUE  -- send messages to standard output
CONSTANT log_verb=TRUE  -- send messages to the errorlog

TYPE t_sync_cmd RECORD
       oper STRING,
       data STRING
     END RECORD
     DEFINE req com.HTTPServiceRequest
     DEFINE url,msg,method,headers STRING,
             tout, n, x INTEGER,
             start_time DATETIME YEAR TO SECOND,
             b BYTE
     DEFINE d0 DATETIME YEAR TO SECOND        
MAIN
  DEFINE k,kurl,kbodega,resp STRING,
         ktrue BOOLEAN,retu INT


    CALL check_utf8() RETURNING x, msg
    IF x != 0 THEN
       DISPLAY "ERROR: ", msg
       EXIT PROGRAM 1
    END IF
    
    CALL show_verb("Starting dbsync server: ...")
    
    -- Normally, the port is set by the GAS for load balancing
    -- For standalone tests you can set FGLAPPSERVER environment variable
    CALL show_verb("Listening on port  : "|| NVL(fgl_getenv("FGLAPPSERVER"),"GAS"))

    CALL com.WebServiceEngine.Start()

    LET start_time = CURRENT
           
    --LET tout=-1 -- timeout: infinite wait
    --LET tout=5  -- timeout: 5 seconds
    LET tout=-1 -- timeout: 10 seconds
    IF tout=-1 THEN
       LET msg="The dbsync server is listening (timeout = infinite wait)."
    ELSE
       LET msg="The dbsync server is listening (timeout =",tout USING "-<<<<<<&"," seconds)."
    END IF
    CALL show_verb(msg)

    LET n=0
  WHILE TRUE
  
  
       LET req = com.WebServiceEngine.getHTTPServiceRequest(tout)
       
       IF req IS NULL THEN -- timeout
          CALL show_verb( SFMT("HTTP request timeout...: %1", CURRENT YEAR TO FRACTION))
          CONTINUE WHILE
       ELSE
          CALL show_verb( SFMT("HTTP request LLEGO AL SERVICIO...: %1", CURRENT YEAR TO FRACTION))
       
       END IF

     LET url = req.getURL()
     LET method = req.getMethod()
        IF method IS NULL OR method != "POST"  THEN
           IF method = "GET" THEN
              CALL req.sendTextResponse(200,NULL,"Welcome to API server for MBS PRODUCCION --Validacion-, Debes envar METODO: POST...")
           END IF 
         
           EXIT WHILE
        END IF
DISPLAY "URL1: ",url
DISPLAY "METODO1: ",method
        
     {   LET headers = req.getRequestHeader("DBSync-Client")
          DISPLAY "header: DBSync-Clent=> ",headers
          IF headers IS NULL OR headers!= "mbs" THEN
              CALL show_err(SFMT("Unexpected HTTP request header DBSync-Client: %1", headers))
              DISPLAY "HEADER: ",headers
              CALL req.sendTextResponse(400,NULL,"Bad request in Header DBSync-Client")
              CONTINUE WHILE
           END IF}
           
       
           LET headers = req.getRequestHeader("accept")
           DISPLAY "content: ",headers
           IF headers IS NULL OR headers NOT MATCHES "application/xml" THEN -- ;Charset=UTF-8
              CALL show_err(SFMT("Unexpected HTTP request header Content-Type: %1", headers))
              CALL req.sendTextResponse(400,NULL,"Bad request, in Header Accept")
              EXIT WHILE
           END IF
           
          IF NOT(read_request(req)) THEN
              -- si el procesamiento del request da error vuelve al loop
              EXIT WHILE
           END IF

           LET n = n + 1
           
           LET d0 = CURRENT
           EXIT WHILE
        
   
  END WHILE
  
END MAIN


FUNCTION show_sync_err(msg)
    DEFINE msg STRING
    CALL fgl_winmessage(%"ERROR", msg, "exclamation")
END FUNCTION

FUNCTION b64_to_file(str_b64,f_sal)

  DEFINE f_sal,str_b64,str_aux STRING

  TRY
     CALL security.Base64.SaveBinary(f_sal,str_b64)
  CATCH
  DISPLAY " data ",str_b64
     LET str_aux="Unable to convert Base64 String to file :",STATUS
     DISPLAY "ERROR: ",msg 
#     CALL fgl_winmessage("Error",str_aux,"stop")
  END TRY
 END FUNCTION 

FUNCTION check_utf8()
    IF ORD("€") == 8364 AND LENGTH("€") == 1 THEN
       RETURN 0, NULL
    ELSE
       RETURN -1, "Application locale must be UTF-8, with char length semantics"
    END IF
END FUNCTION

FUNCTION show_verb(msg)
    DEFINE msg STRING
    IF dpy_verb THEN
       DISPLAY msg
    END IF
   # IF log_verb THEN
   #    CALL errorlog(msg CLIPPED)
   # END IF    
END FUNCTION

FUNCTION read_request(req)
    DEFINE doc xml.DomDocument
    DEFINE req com.HttpServiceRequest
    DEFINE cmd STRING,
    p RECORD
      oper STRING,
    data RECORD
      usuario  STRING,
      clave    STRING,
      codigo   STRING
    END RECORD
   END RECORD,
    bfile BYTE
    
    INITIALIZE cmd TO NULL
    
    TRY
        LET doc = req.readXmlRequest()
        CALL doc.save("./recibidos/recibido.xml")

    CATCH
  
       CALL show_err(SFMT("Unexpected HTTP request read exception: %1", STATUS))
       RETURN FALSE
    END TRY
    

    IF LENGTH(cmd) == 0 THEN
       -- la operacion va a estar vacia y va dar error por invalida
       RETURN TRUE
    END IF
    
    DISPLAY "request: ",cmd
   {
    TRY
    
       CALL util.JSON.parse(cmd, r_cmd)
      
    CATCH
      
       CALL show_err(SFMT("JSON parse error: %1", STATUS))
       RETURN FALSE
    END TRY
}
    RETURN TRUE

END FUNCTION

FUNCTION show_err(msg)
    DEFINE msg STRING
    DISPLAY "ERROR:",msg
  #  CALL errorlog(msg CLIPPED)
END FUNCTION