Initial Commit

db/functions.php

@@ -0,0 +1,190 @@
+<?php
+include "bootstrap.php";
+
+/////////GET BOOKS/////////
+function getBooks($pdo){
+    $stmt = $pdo->query("SELECT bookID, title, author FROM books ORDER BY title ASC");
+    $books = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    return $books;
+}
+
+/////////GET BORROWERS/////////
+function getBorrowers($pdo){
+    $stmt = $pdo->query("SELECT * FROM borrowers ORDER BY lastName ASC");
+    $borrowers = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    return $borrowers;
+}
+
+/////////GET AVAILABLE COPIES OF BOOK/////////
+function getAvailableCopiesOfBook($pdo, $bookID){
+    $stmt = $pdo->query("SELECT * FROM copies WHERE bookID = $bookID AND isBorrowed = 0 ORDER BY copyID ASC");
+    $copies = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    return $copies;
+}
+
+/////////GET BORROWED COPIES OF BORROWER/////////
+function getBorrowedCopiesOfBorrower($pdo, $borrowerID){
+    $stmt = $pdo->query("SELECT
+                            loans.loanID,
+                            loans.copyID,
+                            copies.bookCondition as bookCondition,
+                            books.title as bookTitle,
+                            books.author as bookAuthor
+                        FROM loans
+                        INNER JOIN copies ON loans.copyID = copies.copyID
+                        INNER JOIN books ON copies.bookID = books.bookID
+                        WHERE borrowerID = $borrowerID AND returnedDate IS NULL
+                        ORDER BY copyID ASC");
+    $copies = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    return $copies;
+}
+
+/////////GET ACTIVE LOANS/////////
+function getActiveLoans($pdo){
+    $stmt = $pdo->query("SELECT
+                            loans.*,
+                            books.title as bookTitle,
+                            books.author as bookAuthor,
+                            borrowers.firstName as firstName,
+                            borrowers.lastName as lastName,
+                            borrowers.role as borrowerRole
+                        FROM loans
+                        INNER JOIN copies ON loans.copyID = copies.copyID
+                        INNER JOIN books ON copies.bookID = books.bookID
+                        INNER JOIN borrowers on loans.borrowerID = borrowers.borrowerID
+                        WHERE loans.returnedDate IS NULL
+                        ORDER BY dueDate ASC");
+    $activeLoans = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    return $activeLoans;
+}
+
+/////////GET LATE LOANS/////////
+function getLateLoans($pdo){
+    $currentDate = date("Y-m-d");
+
+    $sql = "SELECT
+                loans.*,
+                books.title as bookTitle,
+                books.author as bookAuthor,
+                borrowers.firstName as firstName,
+                borrowers.lastName as lastName,
+                borrowers.role as borrowerRole
+            FROM loans
+            INNER JOIN copies ON loans.copyID = copies.copyID
+            INNER JOIN books ON copies.bookID = books.bookID
+            INNER JOIN borrowers on loans.borrowerID = borrowers.borrowerID
+            WHERE loans.dueDate < ? AND loans.returnedDate IS NULL
+            ORDER BY dueDate ASC";
+    $stmt = $pdo->prepare($sql);
+    $stmt->execute([$currentDate]);
+
+    $lateLoans = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    return $lateLoans;
+}
+
+/////////ADD COPIES/////////
+function addCopies($pdo, $bookID, $amount, $copyCondition){
+    for($i=0; $i<$amount; $i++){
+                $sql = "INSERT INTO copies (bookID, bookCondition) VALUES (:bookID, :bookCondition)";
+                $stmt = $pdo->prepare($sql);
+                $stmt->bindParam(':bookID', $bookID);
+                $stmt->bindParam(':bookCondition', $copyCondition);
+
+                try {
+                    $stmt->execute();
+                    $successfullyAdded = true;
+                } catch (PDOException $e) {
+                    echo "<p>Error: " . $e->getMessage() . "</p>";
+                }
+            }
+            if($successfullyAdded){
+                if($amount > 1)
+                {
+                    echo $amount . " Copies added successfully!";
+                }else{
+                    echo "Copy added successfully!";
+                }
+            }
+}
+
+/////////ADD BOOK/////////
+function addBook($pdo, $title, $author, $area){
+    $sql = "INSERT INTO books (title, author, areaOfStudy) VALUES (:title, :author, :area)";
+            $stmt = $pdo->prepare($sql);
+            $stmt->bindParam(':title', $title);
+            $stmt->bindParam(':author', $author);
+            $stmt->bindParam(':area', $area);
+
+            try {
+                $stmt->execute();
+                echo "<p>Book added successfully!</p>";
+            } catch (PDOException $e) {
+                echo "<p>Error: " . $e->getMessage() . "</p>";
+            }
+}
+
+/////////ADD BORROWER/////////
+function addBorrower($pdo, $firstname, $lastname, $role){
+    $sql = "INSERT INTO borrowers (firstname, lastname, role) VALUES (:firstname, :lastname, :role)";
+        $stmt = $pdo->prepare($sql);
+        $stmt->bindParam(":firstname", $firstname);
+        $stmt->bindParam(":lastname", $lastname);
+        $stmt->bindParam(":role", $role);
+
+        try{
+            $stmt->execute();
+            echo "<p>Borrowers added!</p>";
+        }catch(PDOException $e){
+            echo "<p>Error: " . $e->getMessage() . "</p>";
+        }
+}
+
+/////////ADD LOAN/////////
+function addLoan($pdo, $copyID, $borrowerID, $borrowedDate, $dueDate){
+    $sql = "INSERT INTO loans (copyID, borrowerID, borrowedDate, dueDate) VALUES (:copyID, :borrowerID, :borrowedDate, :dueDate)";
+        $stmt = $pdo->prepare($sql);
+        $stmt->bindParam(":copyID", $copyID);
+        $stmt->bindParam("borrowerID", $borrowerID);
+        $stmt->bindParam("borrowedDate", $borrowedDate);
+        $stmt->bindParam(":dueDate", $dueDate);
+
+        try{
+            $stmt->execute();
+            echo "<p>Loan added!</p>";
+        }catch(PDOException $e){
+            echo "<p>Error: " . $e->getMessage() . "</p>";
+        }
+    
+    $sql = "UPDATE copies SET isBorrowed=? WHERE copyID=?";
+    $stmt = $pdo->prepare($sql);
+    $stmt->execute([1, $copyID]);
+}
+
+/////////REMOVE LOAN/////////
+function removeLoan($pdo, $copyID, $loanID, $dateReturned){
+    $sql = "UPDATE loans SET returnedDate = ? WHERE copyID = ? AND loanID = ?";
+    $stmt = $pdo->prepare($sql);
+    $stmt->execute([$dateReturned, $copyID, $loanID]);
+
+    $sql = "UPDATE copies SET isBorrowed=? WHERE copyID=?";
+    $stmt = $pdo->prepare($sql);
+    $stmt->execute([0, $copyID]);
+}
+
+/////////SELECT REQUEST/////////
+function selectRequest($pdo, $selectRequest){
+    $stmt = $pdo -> query("SELECT " . $selectRequest);
+
+    $results = $stmt -> fetchAll(PDO::FETCH_ASSOC);
+
+    foreach($results as $result){
+        echo '<pre>'; print_r($result); echo '</pre>';
+    }
+}
+?>