283 lines
5.1 KiB
PHP
283 lines
5.1 KiB
PHP
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<?php /* Copyright (c) 2024 Freya Murphy */
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class DatabaseQuery {
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private $conn;
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private $query;
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private $where;
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private $set;
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private $param;
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function __construct($conn) {
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$this->conn = $conn;
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$this->query = '';
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$this->set = FALSE;
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$this->where = FALSE;
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$this->param = array();
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}
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///
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/// ARBITRARY QUERY
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///
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public function query($query) {
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$this->query .= $query;
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return $this;
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}
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///
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/// SELECT
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///
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public function select($select) {
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$this->query .= "SELECT $select\n";
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return $this;
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}
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public function from($from) {
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$this->query .= "FROM $from\n";
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return $this;
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}
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///
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/// INSERT
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///
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public function insert_into($insert, ...$columns) {
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$this->query .= "INSERT INTO $insert\n (";
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foreach ($columns as $idx => $column) {
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if ($idx !== 0) {
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$this->query .= ",";
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}
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$this->query .= $column;
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}
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$this->query .= ")\n";
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return $this;
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}
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public function values(...$values) {
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$this->query .= "VALUES (";
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foreach ($values as $idx => $value) {
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if ($idx !== 0) {
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$this->query .= ",";
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}
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$this->query .= "?";
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array_push($this->param, $value);
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}
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$this->query .= ")\n";
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return $this;
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}
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///
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/// WHERE
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///
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public function where($cond) {
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if (!$this->where) {
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$this->where = TRUE;
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$this->query .= "WHERE ";
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} else {
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$this->query .= "AND ";
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}
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$this->query .= "$cond ";
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return $this;
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}
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public function where_in($column, $array) {
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if (!$this->where) {
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$this->where = TRUE;
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$this->query .= "WHERE ";
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} else {
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$this->query .= "AND ";
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}
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if (empty($array)) {
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$this->query .= "FALSE\n";
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return $this;
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}
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$in = $this->in($array);
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$this->query .= "$column $in\n";
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return $this;
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}
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private function in($array) {
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$in = 'IN (';
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foreach ($array as $idx => $item) {
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if ($idx != 0) {
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$in .= ",";
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}
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$in .= "?";
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array_push($this->param, $item);
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}
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$in .= ")";
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return $in;
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}
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///
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/// OPERATORS
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///
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public function like($item) {
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$this->query .= "LIKE ?\n";
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array_push($this->param, $item);
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return $this;
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}
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public function eq($item) {
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$this->query .= "= ?\n";
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array_push($this->param, $item);
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return $this;
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}
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public function ne($item) {
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$this->query .= "<> ?\n";
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array_push($this->param, $item);
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return $this;
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}
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public function lt($item) {
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$this->query .= "< ?\n";
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array_push($this->param, $item);
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return $this;
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}
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public function le($item) {
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$this->query .= "<= ?\n";
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array_push($this->param, $item);
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return $this;
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}
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///
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/// JOINS
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///
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public function join($table, $on, $type = 'LEFT') {
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$this->query .= "$type JOIN $table ON $on\n";
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return $this;
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}
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///
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/// LIMIT, OFFSET, ORDER
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///
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public function limit($limit) {
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$this->query .= "LIMIT ?\n";
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array_push($this->param, $limit);
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return $this;
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}
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public function offset($offset) {
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$this->query .= "OFFSET ?\n";
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array_push($this->param, $offset);
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return $this;
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}
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public function order_by($column, $order = 'ASC') {
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$this->query .= "ORDER BY " . $column . ' ' . $order . ' ';
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return $this;
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}
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///
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/// COLLECT
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///
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public function rows(...$params) {
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$args = $this->param;
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foreach ($params as $param) {
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array_push($args, $param);
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}
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$stmt = $this->conn->prepare($this->query);
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try {
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$stmt->execute($args);
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} catch (Exception $ex) {
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echo $ex;
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echo '<br> >> caused by <<<br>';
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echo str_replace("\n", "<br>", $this->query);
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}
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return $stmt->fetchAll(PDO::FETCH_ASSOC);
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}
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public function row(...$params) {
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$args = $this->param;
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foreach ($params as $param) {
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array_push($args, $param);
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}
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$stmt = $this->conn->prepare($this->query);
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$stmt->execute($args);
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return $stmt->fetch(PDO::FETCH_ASSOC);
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}
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public function execute(...$params) {
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$args = $this->param;
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foreach ($params as $param) {
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array_push($args, $param);
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}
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$stmt = $this->conn->prepare($this->query);
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try {
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$stmt->execute($args);
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return TRUE;
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} catch (Exception $_e) {
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echo $_e;
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echo '<br> >> caused by <<<br>';
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echo str_replace("\n", "<br>", $this->query);
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return FALSE;
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}
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}
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}
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/**
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* DatabaseHelper
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* allows queries on the
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* postgres database
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*/
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class DatabaseHelper {
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private $conn;
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function __construct() {
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$this->conn = NULL;
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}
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private function connect() {
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if ($this->conn === NULL) {
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$user = getenv("POSTGRES_USER");
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$pass = getenv("POSTGRES_PASSWORD");
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$db = getenv("POSTGRES_DB");
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$host = 'db';
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$port = '5432';
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$conn_str = sprintf("pgsql:host=%s;port=%d;dbname=%s;user=%s;password=%s",
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$host,
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$port,
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$db,
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$user,
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$pass
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);
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$this->conn = new \PDO($conn_str);
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$this->conn->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
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}
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return $this->conn;
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}
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public function select($select) {
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$conn = $this->connect();
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$query = new DatabaseQuery($conn);
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return $query->select($select);
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}
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public function insert_into($insert, ...$columns) {
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$conn = $this->connect();
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$query = new DatabaseQuery($conn);
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return $query->insert_into($insert, ...$columns);
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}
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public function query($query_str) {
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$conn = $this->connect();
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$query = new DatabaseQuery($conn);
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return $query->query($query_str);
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}
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}
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