The main goal of this telegram bot is to take the place in queue for lessons. I used https://iis.bsuir.by/api to get schedule of university and then based on group of student, that he provide give them functionality to {take a place|check his place|leave his place|check queue at certain day}. For better interactions with database i used Doctrine orm.
<?php
interface Command
{
public function execute() : void;
}
When user inputs any message to bot it checks if this valid text or not
For example:
✅/command
❌any text
If valid then checks if this command exist
<?php
public function createNewCommand(string $message): ?Command
{
$command = explode('@', $message)[0];
$classname = str_replace('/', '', $command, $replaces) . 'Command';
//there are two level of access Teacher and Student,
//later bot check if user has access to Teacher commands
switch (true) {
case class_exists(__NAMESPACE__ . '\\' . 'StudentsCommands' . '\\' . $classname):
$classname = __NAMESPACE__ . '\\' . 'StudentsCommands' . '\\' . $classname;
break;
case class_exists(__NAMESPACE__ . '\\' . 'TeacherCommands' . '\\' . $classname):
$classname = __NAMESPACE__ . '\\' . 'TeacherCommands' . '\\' . $classname;
break;
default:
break;
}
if (class_exists($classname) && $replaces == 1 && $command[0] == '/') {
return new $classname($this->telegram, $this->params, $this->stateManager);
}
return null;
}
And after than executes it.
Also there is one feature in this bot called states,
When user executes some command, they may have functionality to set State to user:
<?php
$this->stateManager->setState(
$user->getTgId(),
$this->getButtonsId($response),
new ChoosingDateState($this->telegram, $this->stateManager)
);
And when user has some state input in future will be processed according to this state.
<?php
interface State
{
public function handleInput(array $params): void;
}
Each State handle input in different ways.
There are 3 classes to work with several apis:
- App\Telegram - provide intereaction with Telegram bot api
- App\Schedule - help get information about lessons of university
- App\Github - get this repository stats, to see if user starred this repository, then give him additional functionality
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