program main
   use www
   implicit none

   character, dimension(:), allocatable  :: form_data
   character(len=32) :: index_path
   character(len=128):: db_path
   integer :: err, i, length
   logical :: exist

   inquire (file="debug.log", exist=exist)
   if (exist) then
      open (12, file="debug.log", status="old", position="append", action="write")
   else
      open (12, file="debug.log", status="new", action="write")
   end if

   call getarg(1, index_path)
   call getarg(2, db_path)

   call request(form_data, length)

   if (length .gt. 0) then
      inquire (file=db_path, exist=exist)
      if (.not. exist) then
         write (12, *) trim(adjustl(db_path))
         call create_db(db_path)
      end if

      call add_user(db_path, form_data, length)
   end if

   call write_index(index_path)

   if (allocated(form_data)) deallocate (form_data, stat=err)
   if (err /= 0) print *, "index_html: Deallocation request denied"

   close (unit=12)
contains

   subroutine create_db(db_path)
      character(len=128), intent(in) :: db_path
      character(len=:), allocatable :: command

      command = 'CREATE TABLE users ' &
                //'(id INTEGER PRIMARY KEY ASC, ' &
                //'username TEXT, password TEXT, ' &
                //'apperance TEXT, x_pos INTEGER, ' &
                //'y_pos INTEGER, last_login INTEGER, ' &
                //' created INTEGER);'
      write (12, *) command
      call execute_command_line(command)

   end subroutine create_db

   subroutine add_user(db_path, request, length)
      character(len=128), intent(in) :: db_path
      character, dimension(:), allocatable, intent(in) :: request
      integer, intent(in) :: length

      character(len=:), allocatable :: command
      character(len=24) :: username
      character(len=24) :: password
      character(len=32) :: encrypted_password
      character(len=32) :: created
      character(len=8)  :: appearance
      integer :: i, s_idx, e_idx

      get_username: do i = 1, length
         if (request(i) .eq. '=') then
            s_idx = i + 1
         end if

         if (request(i) .eq. '&') then
            e_idx = i - 1
            exit get_username
         end if
      end do get_username
      username = transfer(request(s_idx:e_idx), username)

      get_password: do i = e_idx + 2, length
         if (request(i) .eq. '=') then
            s_idx = i + 1
         end if

         if (request(i) .eq. '&') then
            e_idx = i - 1
            exit get_password
         end if
      end do get_password
      password = transfer(request(s_idx:e_idx), password)

      get_appearance: do i = e_idx + 2, length
         if (request(i) .eq. '=') then
            s_idx = i + 1
         end if
      end do get_appearance
      appearance = transfer(request(s_idx:length), appearance)

      write (created, *) time()

      command = 'sqlite3 '//trim(adjustl(db_path))//' "INSERT INTO users (username, password' &
                //', apperance, x_pos, y_pos, last_login, created) VALUES ('''//username &
                //''', '''//trim(adjustl(password))//''', '''//trim(adjustl(appearance)) &
                //''',0, 0, 0,'//trim(adjustl(created))//');"'
      write (12, *) command
      call execute_command_line(command)

   end subroutine add_user

end program main