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module captain_db
use sqlite
implicit none
integer, parameter::PLAYER_NAME_LENGTH = 128
character(1024)::database_file
type(c_ptr)::db
contains
subroutine initialize_db(filename)
use logging
implicit none
character(*), intent(in)::filename
logical::exists
inquire(file=filename, exist=exists)
if(.not. exists) then
call write_log("Database does not exist, exiting")
call shutdown()
stop
end if
if(sqlite3_open(filename, db) == SQLITE_OK) then
database_file = filename
else
Print *, "ERROR: Could not open db"
stop
end if
end subroutine initialize_db
subroutine shutdown_db()
implicit none
integer::i
i = sqlite3_close(db)
end subroutine shutdown_db
subroutine add_player_db(name, token)
implicit none
character(*), intent(in)::name
character(*), intent(in), optional::token
type(sqlite3_stmt)::stmt
character(64)::my_token
if(present(token)) then
my_token = token
else
my_token = "None"
end if
if(stmt%prepare(db, "INSERT INTO players(name, token) VALUES(?, ?)") == SQLITE_OK) then
if(stmt%bind_text(1, name) == SQLITE_OK .and. stmt%bind_text(2, my_token) == SQLITE_OK) then
call stmt%step_now()
end if
end if
call stmt%finalize()
end subroutine add_player_db
subroutine update_player_token_db(name, token)
implicit none
character(*), intent(in)::name
character(*), intent(in)::token
type(sqlite3_stmt)::stmt
if(stmt%prepare(db, "UPDATE players SET token=? WHERE name=?") == SQLITE_OK) then
if(stmt%bind_text(2, name) == SQLITE_OK .and. stmt%bind_text(1, token) == SQLITE_OK) then
call stmt%step_now()
end if
end if
call stmt%finalize()
end subroutine update_player_token_db
subroutine remove_player_db(name)
implicit none
character(*), intent(in)::name
type(sqlite3_stmt)::stmt
if(stmt%prepare(db, "DELETE FROM players WHERE name=?") == SQLITE_OK) then
if(stmt%bind_text(1, name) == SQLITE_OK) then
call stmt%step_now()
end if
end if
call stmt%finalize()
end subroutine remove_player_db
function get_player_count()
implicit none
type(sqlite3_stmt)::stmt
integer::get_player_count
get_player_count = 0
if(stmt%prepare(db, "SELECT COUNT(*) FROM players") == SQLITE_OK) then
if(stmt%step() == SQLITE_ROW) then
get_player_count = stmt%column_int(0)
end if
end if
call stmt%finalize()
end function get_player_count
function get_player_names() result(res)
implicit none
type(sqlite3_stmt)::stmt
character(len=PLAYER_NAME_LENGTH), dimension(:), pointer::res
integer::i,n
n = get_player_count()
if(n > 0) then
allocate(res(n))
if(stmt%prepare(db, "SELECT name FROM players ORDER BY name") == SQLITE_OK) then
i = 1
do while(stmt%step() == SQLITE_ROW .and. i <= n)
call stmt%column_text(0, res(i))
i = i + 1
end do
end if
call stmt%finalize()
end if
end function get_player_names
end module captain_db
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