DSP Project first push, date: 29/01/2026
This commit is contained in:
Sok Ponlork
213
classes/Announcement.php
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213
classes/Announcement.php
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<?php
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class Announcement {
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private $pdo;
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private string $uploadDir;
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public function __construct(PDO $pdo) {
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$this->pdo = $pdo;
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$this->uploadDir = __DIR__ . '/../uploads/announcements/';
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// Ensure upload directory exists
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if (!is_dir($this->uploadDir) && !mkdir($this->uploadDir, 0775, true) && !is_dir($this->uploadDir)) {
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throw new RuntimeException('Unable to create announcements upload directory.');
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}
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}
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/**
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* Adds a new announcement to the database.
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*
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* @param string $title The title of the announcement.
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* @param string $description The full description of the announcement.
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* @param string|null $photopath The filename of the uploaded photo, or null if no photo.
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* @param string $status The status of the announcement (e.g., 'Draft', 'Published', 'Archived').
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* @param int $reg_by The ID of the user who registered the announcement.
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* @return bool True on success, false on failure.
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* @throws Exception If a database error occurs.
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*/
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public function addAnnouncement(string $title, string $description, ?string $photopath, string $status, int $reg_by): bool {
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$sql = "INSERT INTO dsps_tbl_announcement (dspsann_title, dspsann_description, dspsann_photopath, dspsann_status, dspsann_reg_by)
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VALUES (:title, :description, :photopath, :status, :reg_by)";
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try {
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$stmt = $this->pdo->prepare($sql);
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$stmt->bindParam(':title', $title);
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$stmt->bindParam(':description', $description);
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$stmt->bindParam(':photopath', $photopath);
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$stmt->bindParam(':status', $status);
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$stmt->bindParam(':reg_by', $reg_by);
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return $stmt->execute();
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} catch (PDOException $e) {
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error_log("Error adding announcement: " . $e->getMessage());
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throw new Exception("Could not add announcement. Please try again later.");
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}
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}
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/**
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* Updates an existing announcement in the database.
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*
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* @param int $id The ID of the announcement to update.
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* @param string $title The new title.
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* @param string $description The new description.
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* @param string|null $photopath The new filename of the photo, or null.
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* @param string $status The new status.
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* @param int $mod_by The ID of the user who modified the announcement.
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* @return bool True on success, false on failure.
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* @throws Exception If a database error occurs.
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*/
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public function updateAnnouncement(int $id, string $title, string $description, ?string $photopath, string $status, int $mod_by): bool {
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$sql = "UPDATE dsps_tbl_announcement
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SET dspsann_title = :title, dspsann_description = :description, dspsann_photopath = :photopath,
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dspsann_status = :status, dspsann_mod_datetime = CURRENT_TIMESTAMP, dspsann_reg_by = :mod_by
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WHERE pkdspsann_id = :id";
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try {
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$stmt = $this->pdo->prepare($sql);
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$stmt->bindParam(':title', $title);
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$stmt->bindParam(':description', $description);
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$stmt->bindParam(':photopath', $photopath);
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$stmt->bindParam(':status', $status);
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$stmt->bindParam(':mod_by', $mod_by);
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$stmt->bindParam(':id', $id);
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return $stmt->execute();
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} catch (PDOException $e) {
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error_log("Error updating announcement (ID: $id): " . $e->getMessage());
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throw new Exception("Could not update announcement. Please try again later.");
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}
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}
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/**
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* Deletes an announcement from the database and its associated photo file.
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*
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* @param int $id The ID of the announcement to delete.
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* @return bool True on success, false on failure.
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* @throws Exception If a database error occurs.
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*/
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public function deleteAnnouncement(int $id): bool {
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// First, get the photo path to delete the file
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$announcement = $this->getAnnouncementById($id);
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if ($announcement && !empty($announcement['dspsann_photopath'])) {
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$filePath = $this->uploadDir . $announcement['dspsann_photopath'];
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if (file_exists($filePath)) {
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unlink($filePath); // Delete the file
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}
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}
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$sql = "DELETE FROM dsps_tbl_announcement WHERE pkdspsann_id = :id";
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try {
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$stmt = $this->pdo->prepare($sql);
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$stmt->bindParam(':id', $id);
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return $stmt->execute();
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} catch (PDOException $e) {
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error_log("Error deleting announcement (ID: $id): " . $e->getMessage());
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throw new Exception("Could not delete announcement. Please try again later.");
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}
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}
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/**
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* Retrieves a single announcement by its ID.
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*
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* @param int $id The ID of the announcement.
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* @return array|false The announcement data as an associative array, or false if not found.
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* @throws Exception If a database error occurs.
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*/
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public function getAnnouncementById(int $id) {
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$sql = "SELECT * FROM dsps_tbl_announcement WHERE pkdspsann_id = :id";
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try {
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$stmt = $this->pdo->prepare($sql);
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$stmt->bindParam(':id', $id);
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$stmt->execute();
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return $stmt->fetch(PDO::FETCH_ASSOC);
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} catch (PDOException $e) {
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error_log("Error fetching announcement by ID ($id): " . $e->getMessage());
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throw new Exception("Could not retrieve announcement. Please try again later.");
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}
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}
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/**
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* Retrieves all announcements, optionally filtered by status.
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*
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* @param string|null $status Optional status to filter by (e.g., 'Published').
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* @param int|null $limit Optional limit for the number of results.
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* @return array An array of announcement data.
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* @throws Exception If a database error occurs.
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*/
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public function getAllAnnouncements(?string $status = null, ?int $limit = null): array {
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$sql = "SELECT * FROM dsps_tbl_announcement";
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$conditions = [];
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$params = [];
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if ($status) {
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$conditions[] = "dspsann_status = :status";
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$params[':status'] = $status;
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}
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if (!empty($conditions)) {
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$sql .= " WHERE " . implode(" AND ", $conditions);
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}
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$sql .= " ORDER BY dspsann_reg_datetime DESC";
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if ($limit) {
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$sql .= " LIMIT :limit";
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$params[':limit'] = $limit;
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}
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try {
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$stmt = $this->pdo->prepare($sql);
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foreach ($params as $key => &$val) {
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$stmt->bindParam($key, $val, is_int($val) ? PDO::PARAM_INT : PDO::PARAM_STR);
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}
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$stmt->execute();
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return $stmt->fetchAll(PDO::FETCH_ASSOC);
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} catch (PDOException $e) {
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error_log("Error fetching all announcements: " . $e->getMessage());
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throw new Exception("Could not retrieve announcements. Please try again later.");
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}
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}
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/**
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* Gets the total count of announcements.
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*
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* @return int The total number of announcements.
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* @throws Exception If a database error occurs.
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*/
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public function getTotalAnnouncements(): int {
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$sql = "SELECT COUNT(*) FROM dsps_tbl_announcement";
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try {
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$stmt = $this->pdo->query($sql);
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return $stmt->fetchColumn();
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} catch (PDOException $e) {
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error_log("Error getting total announcements count: " . $e->getMessage());
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throw new Exception("Could not retrieve announcement count. Please try again later.");
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}
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}
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/**
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* Handles the upload of an announcement photo.
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*
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* @param array $file The $_FILES array for the uploaded photo.
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* @return string The unique filename of the uploaded photo.
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* @throws Exception If the upload fails or file type is invalid.
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*/
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public function handlePhotoUpload(array $file): string {
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if ($file['error'] !== UPLOAD_ERR_OK) {
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throw new Exception('File upload error: ' . $file['error']);
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}
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$allowedTypes = ['image/jpeg', 'image/png', 'image/gif'];
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$finfo = new finfo(FILEINFO_MIME_TYPE);
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$mimeType = $finfo->file($file['tmp_name']);
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if (!in_array($mimeType, $allowedTypes)) {
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throw new Exception('Invalid file type. Only JPEG, PNG, and GIF images are allowed.');
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}
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$extension = pathinfo($file['name'], PATHINFO_EXTENSION);
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$uniqueFilename = uniqid('announcement_') . '.' . $extension;
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$destination = $this->uploadDir . $uniqueFilename;
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if (!move_uploaded_file($file['tmp_name'], $destination)) {
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throw new Exception('Failed to move uploaded file.');
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}
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return $uniqueFilename;
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}
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}
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