<?php

namespace phpnotify;

require_once('fetch.php');

class notification {
    private array $tags;
    private array $actions;
    private fetch $request;

    public function __construct(string $location, string $content) {
        $this->tags = array();
        $this->actions = array();

        $this->request = new fetch($location);
        $this->request->set_method('POST');
        $this->request->send_raw($content, 'text/plain');
    }

    public function set_title(string $title): object {
        $this->request->add_header('Title', $title);
        return $this;
    }

    public function set_priority(int $priority): object {
        if ($priority < 1 || $priority > 5) {
            throw new TypeError('Priority must be between 1 and 5.');
        }

        $this->request->add_header('Priority', strval($priority));
        return $this;
    }

    public function add_tag(string $tag): object {
        $tag = trim($tag);

        if (strpos($tag, ' ') !== false) {
            throw new TypeError('Tags could not contain white chars.');
        }

        if (strpos($tag, ',') !== false) {
            throw new TypeError('Tags could not contain ",".');
        }

        array_push($this->tags, $tag);
        return $this;
    }

    private function get_tags(): string {
        return join(',', $this->tags);
    }

    public function set_markdown(): object {
        $this->request->add_header('Markdown', 'yes');
        return $this;
    }

    public function delivery_time(string $when): object {
        $this->request->add_header('At', $when);
        return $this;
    }

    public function set_email(string $email): object {
        if (filter_var($email, FILTER_VALIDATE_EMAIL)) {
            throw new TypeError('Email "'.$email.'" is invalid.');
        }

        $this->request->add_header('Email', $email);
        return $this;
    }

    public function click_url(string $url): object {
        if (!filter_var($url, FILTER_VALIDATE_URL)) {
            throw new TypeError('"'.$url.'" is not valid URL.');
        }

        $this->request->add_header('Action', $url);
        return $this;
    }

    public function attach_url(string $url): object {
        if (!filter_var($url, FILTER_VALIDATE_URL)) {
            throw new TypeError('"'.$url.'" is not valid URL.');
        }

        $this->request->add_header('Attach', $url);
        return $this;
    }

    public function icon_url(string $url): object {
        if (!filter_var($url, FILTER_VALIDATE_URL)) {
            throw new TypeError('"'.$url.'" is not valid URL.');
        }

        $this->request->add_header('Icon', $url);
        return $this;
    }

    public function call(string|true $phone_number): object {
        if ($phone_number === true) {
            $this->request->add_header('Call', 'yes');
            return $this;
        }

        $check = str_replace(' ', '', $phone_number);
        
        if ($check[0] === '+') {
            $check = substr($check, 1);
        }

        if (!is_numeric($phone_number)) {
            throw new TypeError('"'.$phone_number.'" is invalid number.');
        }

        $this->request->add_header('Call', $phone_number);
        return $this;
    }

    public function save_as(string $filename): object {
        if (basename($filename) !== $filename) {
            throw new TypeError('"'.$filename.'" is invalid filename.');
        }

        $this->request->add_header('Filename', $filename);
        return $this;
    }

    public function login(string $nick, string $password): object {
        $decoded = $nick.':'.$password;
        $encoded = base64_encode($decoded);
        $param = 'Basic '.$encoded;

        $this->request->add_header('Authorization', $param);
        return $this;
    }

    public function token(string $token): object {
        $token = trim($token);
        $param = 'Bearer '.$token;

        $this->request->add_header('Authorization', $param);
        return $this;
    }

    public function disable_firebase(): object {
        $this->request->add_header('Firebase', 'no');
        return $this;
    }

    public function disable_cache(): object {
        $this->request->add_header('Cache', 'no');
        return $this;
    }

    public function set_poll_id(string $id): object {
        $this->request->add_header('Poll-ID', $id);
        return $this;
    }

    public function enable_unified_push(): object {
        $this->request->add_header('UnifiedPush', 'yes');
        return $this;
    }

    public function add_action(
        string $action, 
        string $label, 
        ?array $param = null
    ): object {
        $separator = ', ';
        $content = $action.$separator.$label;

        if ($param === null) {
            array_push($this->actions, $content);
            return $this;
        }

        foreach ($param as $key => $value) {
            $content .= $separator;
            $content .= $key.'='.$value;
        }
            
        array_push($this->actions, $content);
        return $this;
    }

    private function get_actions(): string {
        return join('; ', $this->actions);
    }

    public function send(bool $throws = false): bool {
        $this->request->set_header('Actions', $this->get_actions());
        $this->request->set_header('Tags', $this->get_tags());
        
        try {
            $result = $this->request->request()->receive_array();

            if (array_key_exists('id', $result)) {
                return true;
            }

            if (count($result) === 0) {
                throw new RuntimeException('Can not fetch. General error.');
            }
        
            if (array_key_exists('error', $result)) {
                $error = (
                    'Can not publish: "'
                    .$result['error']
                    .'"'
                );

                throw new RuntimeException($error);
            }
        } catch (Exception $error) {
            if ($throws) {
                throw $error;
            }

            return false;
        }
    }
}