@inject ContactManagementAPI.Services.UserContextService UserContext
@model ContactManagementAPI.Models.Contact
@{
    ViewData["Title"] = $"Documents - {Model.FirstName} {Model.LastName}";
}

<div class="documents-container">
    <div class="documents-header">
        <a href="/home/details/@Model.Id" class="btn btn-secondary">
            <i class="fas fa-arrow-left"></i> Back
        </a>
        <h2><i class="fas fa-file-archive"></i> Documents - @Model.FirstName @Model.LastName</h2>
    </div>

    @if (UserContext.HasRight(RightsCatalog.DocumentsManage))
    {
        <div class="document-upload">
            <div class="upload-form">
                <h4>Upload Document</h4>
                <form id="uploadForm">
                    <div class="form-row">
                        <div class="form-group">
                            <label for="documentType">Document Type:</label>
                            <select id="documentType" class="form-control">
                                <option value="Other">Other</option>
                                <option value="ID">ID / Passport</option>
                                <option value="Address">Address Proof</option>
                                <option value="Contract">Contract</option>
                                <option value="Invoice">Invoice</option>
                                <option value="Certificate">Certificate</option>
                                <option value="Medical">Medical Records</option>
                                <option value="Financial">Financial</option>
                            </select>
                        </div>
                        <div class="form-group">
                            <label for="documentFile">Select File:</label>
                            <input type="file" id="documentFile" class="form-control" accept=".pdf,.doc,.docx,.xls,.xlsx,.txt,.ppt,.pptx" />
                        </div>
                        <div class="form-group">
                            <button type="button" class="btn btn-primary" onclick="uploadDocument()">
                                <i class="fas fa-upload"></i> Upload
                            </button>
                        </div>
                    </div>
                </form>
            </div>
        </div>
    }

    @if (Model.Documents.Count == 0)
    {
        <div class="no-items">
            <i class="fas fa-folder-open"></i>
            <p>No documents attached. Upload your first document!</p>
        </div>
    }
    else
    {
        <div class="document-list">
            <table>
                <thead>
                    <tr>
                        <th>File Name</th>
                        <th>Type</th>
                        <th>Size</th>
                        <th>Uploaded</th>
                        <th>Actions</th>
                    </tr>
                </thead>
                <tbody>
                    @foreach (var doc in Model.Documents.OrderByDescending(d => d.UploadedAt))
                    {
                        <tr>
                            <td>
                                <i class="fas fa-file"></i> @doc.FileName
                            </td>
                            <td><span class="badge">@doc.DocumentType</span></td>
                            <td>@FormatFileSize(doc.FileSize)</td>
                            <td>@doc.UploadedAt.ToString("dd/MM/yyyy HH:mm")</td>
                            <td>
                                <a href="/document/download/@doc.Id/@Model.Id" class="btn btn-sm btn-info">
                                    <i class="fas fa-download"></i> Download
                                </a>
                                @if (UserContext.HasRight(RightsCatalog.DocumentsManage))
                                {
                                    <button type="button" class="btn btn-sm btn-danger delete-doc-btn" data-doc-id="@doc.Id">
                                        <i class="fas fa-trash"></i> Delete
                                    </button>
                                }
                            </td>
                        </tr>
                    }
                </tbody>
            </table>
        </div>
    }
</div>

<script>
    const contactId = @Model.Id;

    async function uploadDocument() {
        const fileInput = document.getElementById('documentFile');
        const documentType = document.getElementById('documentType').value;

        if (!fileInput.files.length) {
            alert('Please select a file');
            return;
        }

        const formData = new FormData();
        formData.append('contactId', contactId);
        formData.append('documentFile', fileInput.files[0]);
        formData.append('documentType', documentType);

        try {
            const response = await fetch('/document/upload', {
                method: 'POST',
                body: formData
            });
            const data = await response.json();
            if (data.success) {
                alert('Document uploaded successfully');
                location.reload();
            } else {
                alert('Error: ' + data.message);
            }
        } catch (error) {
            alert('Upload failed: ' + error.message);
        }
    }

    document.querySelectorAll('.delete-doc-btn').forEach(btn => {
        btn.addEventListener('click', async function() {
            if (!confirm('Are you sure you want to delete this document?')) return;
            const docId = this.dataset.docId;
            try {
                const response = await fetch('/document/delete', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json'
                    },
                    body: JSON.stringify({ id: docId, contactId })
                });
                const data = await response.json();
                if (data.success) {
                    location.reload();
                } else {
                    alert('Error: ' + data.message);
                }
            } catch (error) {
                alert('Error: ' + error.message);
            }
        });
    });

    @functions {
        private string FormatFileSize(long bytes) {
            if (bytes < 1024) return bytes + " B";
            if (bytes < 1024 * 1024) return (bytes / 1024.0).ToString("F2") + " KB";
            return (bytes / (1024.0 * 1024.0)).ToString("F2") + " MB";
        }
    }
</script>