// AUTHOOOOOOOOOOOOOOOOOR
function editAuthor(authorId) {
    const modal = document.getElementById('editAuthorModal');
    modal.style.display = 'block';
    
    // Fetch author details and populate form
    fetch(`../Admin Actions/GetAuthor.php?id=${authorId}`)
        .then(response => response.json())
        .then(author => {
            document.getElementById('authorId').value = author.authorid;
            document.getElementById('firstName').value = author.firstname;
            document.getElementById('lastName').value = author.lastname;
            document.getElementById('nationality').value = author.nationality;
            document.getElementById('dateOfBirth').value = author.dateofbirth;
            document.getElementById('authorDescription').value = author.author_description;
            
            // Show current image if exists
            const currentImageDiv = document.getElementById('currentImage');
            if (author.author_image) {
                currentImageDiv.innerHTML = `
                    <img src=./AuthorImages/${author.author_image} alt="Current author image" style="max-width: 100px; margin-top: 10px;">
                    <p>Current image</p>
                `;
            } else {
                currentImageDiv.innerHTML = '<p>No image uploaded</p>';
            }
        });
}

function closeAuthorModal() {
    document.getElementById('editAuthorModal').style.display = 'none';
}

function searchAuthors() {
    const searchInput = document.querySelector('.search-input').value.toLowerCase();
    const tableRows = document.querySelectorAll('#authorsTableBody tr');
    
    tableRows.forEach(row => {
        const firstName = row.cells[1].textContent.toLowerCase();
        const lastName = row.cells[2].textContent.toLowerCase();
        const nationality = row.cells[3].textContent.toLowerCase();
        
        if (firstName.includes(searchInput) || 
            lastName.includes(searchInput) || 
            nationality.includes(searchInput)) {
            row.style.display = '';
        } else {
            row.style.display = 'none';
        }
    });
    document.querySelector('.search-input').addEventListener('keyup', searchAuthors);
}

function updateAuthor(event) {
event.preventDefault();
const formData = new FormData(event.target);

// Debug: Check what data is being sent
for (let pair of formData.entries()) {
    console.log(pair[0] + ': ' + pair[1]);
}

fetch('../Admin Actions/UpdateAuthor.php', {
    method: 'POST',
    body: formData
})
.then(response => {
    console.log('Response status:', response.status);
    return response.json();
})
.then(data => {
    console.log('Response data:', data);
    if(data.success) {
        closeAuthorModal();
        location.reload();
    } else {
        alert(data.message || 'Failed to update author');
    }
})
.catch(error => {
    console.error('Error:', error);
    alert('An error occurred while updating the author');
});
}

function deleteAuthor(authorId) {
    if(confirm('Are you sure you want to delete this author?')) {
        fetch('../Admin Actions/DeleteAuthor.php', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/x-www-form-urlencoded',
            },
            body: `authorId=${authorId}`
        })
        .then(response => response.json())
        .then(data => {
            if(data.success) {
                location.reload();
            }
        });
    }
}


// ADD AUTHOR
function handleAuthorSubmit(event) {
event.preventDefault();

// Log the form submission event
console.debug('Form submission started.');

// Create FormData object from the form
const formData = new FormData(event.target);

// Log the form data for debugging
console.debug('FormData created:', Array.from(formData.entries()));

// Send the form data to the server
fetch('../Admin Actions/AddAuthor.php', {
method: 'POST',
body: formData
})
.then(response => response.text()) // Read as plain text
.then(text => {
    console.debug('Raw server response:', text);

    try {
        // Try to parse JSON
        const data = JSON.parse(text);
        if (data.success) {
            alert('Author added successfully!');
            event.target.reset();
        } else {
            alert(data.message || 'Error adding author');
        }
    } catch (error) {
        console.error('Invalid JSON:', text);
        alert('Server returned invalid JSON. Check console for details.');
    }
})
.catch(error => {
    console.error('Fetch error:', error);
    alert('An error occurred while adding the author');
});
}


function resetAuthorForm() {
    document.getElementById('addAuthorForm').reset();
    // Clear any error messages that might be displayed
    document.querySelectorAll('.error-message').forEach(elem => {
        elem.style.display = 'none';
    });
}