Save Data Proposal

public function savedataproposal_post()
    {
        $username   = trim($this->post('username'));
        $lecture_id = $this->post('lecture_id');

        if ($username == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Username kosong.',
            ];
        } elseif ($this->post('tanggal1') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Dari Tanggal harus diisi.',
            ];
        } elseif ($this->post('tanggal2') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Sampai Tanggal harus diisi.',
            ];
        } elseif ($this->post('judul') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Judul harus diisi.',
            ];
        } elseif ($this->post('lstPusatStudi') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Pusat Studi harus dipilih.',
            ];
        } elseif ($this->post('lstSkim') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Kategori harus dipilih.',
            ];
        } elseif ($this->post('tempat') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Tempat Penelitian harus diisi.',
            ];
        } elseif ($this->post('metode') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Metode Penelitian harus diisi.',
            ];
        } elseif ($this->post('masalah') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Masalah Penelitian harus diisi.',
            ];
        } elseif ($this->post('tujuan') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Tujuan Penelitian harus diisi.',
            ];
        } elseif ($this->post('luaran') == '') {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Luaran yang dihasilkan harus diisi.',
            ];
        } elseif ($this->post('dana') == '' || $this->post('dana') == 0) {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'Dana Usulan harus diisi.',
            ];
        } elseif (empty($_FILES['file_pdf']['name'])) {
            $response = [
                'resp_error' => true,
                'resp_msg'   => 'File Proposal harus diisi.',
            ];
        } else {
            $jam                     = time();
            $config['file_name']     = 'Proposal_' . $username . '_' . $jam . '.pdf';
            $config['upload_path']   = './upload_file/proposal/';
            $config['allowed_types'] = 'pdf';
            $config['overwrite']     = true;
            $config['max_size']      = 0;
            $this->load->library('upload', $config);
            if (!$this->upload->do_upload('file_pdf')) {
                $response = [
                    'resp_error' => true,
                    'resp_msg'   => 'File harus PDF.',
                ];
            } else {
                // Cek Masih ada Tanggungan apa tidak
                $checkTanggungan = $this->db->get_where('v_dosen', array('user_username' => $username))->row();
                if ($checkTanggungan->lecture_tanggungan == 'Ada') {
                    $response = [
                        'resp_error' => true,
                        'resp_msg'   => 'Anda masih punya Tanggungan Proposal',
                    ];
                } else {
                    $dtBudget      = $this->db->get_where('lemlit_skim', array('skim_id' => $this->post('lstSkim')))->row();
                    $budget        = $dtBudget->skim_budget;
                    $budget_rupiah = number_format($budget, 0, '', ',');
                    $dana          = $this->post('dana');

                    if ($dana > $budget) {
                        $response = [
                            'resp_error' => true,
                            'resp_msg'   => 'Usulan Dana Melebihi Budget, Budget = ' . $budget_rupiah,
                        ];
                    } else {
                        $data = array(
                            'user_username'     => $username,
                            'skim_id'           => $this->post('lstSkim'),
                            'pusat_studi_id'    => $this->post('lstPusatStudi'),
                            'propose_title'     => strtoupper($this->post('judul')),
                            'propose_title_seo' => seo_title($this->post('judul')),
                            'propose_place'     => strtoupper($this->post('tempat')),
                            'propose_method'    => trim($this->post('metode')),
                            'propose_masalah'   => trim($this->post('masalah')),
                            'propose_fund'      => $this->post('dana'),
                            'propose_budget'    => $budget,
                            'propose_purpose'   => trim($this->post('tujuan')),
                            'propose_luaran'    => trim($this->post('luaran')),
                            'propose_date1'     => $this->post('tanggal1'),
                            'propose_date2'     => $this->post('tanggal2'),
                            'propose_proposal'  => $this->upload->file_name,
                            'propose_date'      => date('Y-m-d'),
                            'propose_update'    => date('Y-m-d H:i:s'),
                        );

                        $this->db->insert('lemlit_propose', $data);

                        $propose_id = $this->db->insert_id();
                        $data       = array(
                            'propose_id'           => $propose_id,
                            'lecture_id'           => $lecture_id,
                            'team_position_level'  => 'Ketua',
                            'team_position_status' => 'Confirm',
                            'team_position_update' => date('Y-m-d H:i:s'),
                        );

                        $this->db->insert('lemlit_team_position', $data);

                        // Update Data Tanggungan menjadi Ada
                        $data = array(
                            'lecture_tanggungan' => 'Ada',
                            'lecture_update'     => date('Y-m-d H:i:s'),
                        );

                        $this->db->where('user_username', $username);
                        $this->db->update('lemlit_lecture', $data);

                        // Send Notifikasi ke Admin
                        $pesanNotif = 'Pengajuan Proposal Baru : ' . $username . 'A.n : ' . $checkTanggungan->user_name;
                        $dataNotif  = array(
                            'user_pengirim'    => $username,
                            'user_username'    => $username,
                            'notifikasi_date'  => date('Y-m-d'),
                            'notifikasi_desc'  => $pesanNotif,
                            'notifikasi_level' => 'Admin',
                        );

                        $this->db->insert('lemlit_notifikasi', $dataNotif);

                        $listUser = $this->db->get_where('lemlit_users', array('device_id !=' => '', 'user_level' => 'Admin'))->result();
                        if (count($listUser) > 0) {
                            foreach ($listUser as $r) {
                                sendNotification($r->device_id, $pesanNotif);
                            }
                        }

                        $response = [
                            'resp_error' => false,
                            'resp_msg'   => 'Proposal Berhasil di Simpan.',
                        ];
                    }
                }
            }
        }

        $this->response($response, 200);
    }