package app

import (
    "fmt"
    "github.com/seaweedfs/seaweedfs/weed/admin/dash"
)

templ Policies(data dash.PoliciesData) {
    <div class="d-flex justify-content-between flex-wrap flex-md-nowrap align-items-center pt-3 pb-2 mb-3 border-bottom">
        <h1 class="h2">
            <i class="fas fa-shield-alt me-2"></i>IAM Policies
        </h1>
        <div class="btn-toolbar mb-2 mb-md-0">
            <div class="btn-group me-2">
                <button type="button" class="btn btn-sm btn-primary" data-bs-toggle="modal" data-bs-target="#createPolicyModal">
                    <i class="fas fa-plus me-1"></i>Create Policy
                </button>
            </div>
        </div>
    </div>

    <div id="policies-content">
        <!-- Summary Cards -->
        <div class="row mb-4">
            <div class="col-xl-4 col-md-6 mb-4">
                <div class="card border-left-primary shadow h-100 py-2">
                    <div class="card-body">
                        <div class="row no-gutters align-items-center">
                            <div class="col mr-2">
                                <div class="text-xs font-weight-bold text-primary text-uppercase mb-1">
                                    Total Policies
                                </div>
                                <div class="h5 mb-0 font-weight-bold text-gray-800">
                                    {fmt.Sprintf("%d", data.TotalPolicies)}
                                </div>
                            </div>
                            <div class="col-auto">
                                <i class="fas fa-shield-alt fa-2x text-gray-300"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="col-xl-4 col-md-6 mb-4">
                <div class="card border-left-success shadow h-100 py-2">
                    <div class="card-body">
                        <div class="row no-gutters align-items-center">
                            <div class="col mr-2">
                                <div class="text-xs font-weight-bold text-success text-uppercase mb-1">
                                    Active Policies
                                </div>
                                <div class="h5 mb-0 font-weight-bold text-gray-800">
                                    {fmt.Sprintf("%d", data.TotalPolicies)}
                                </div>
                            </div>
                            <div class="col-auto">
                                <i class="fas fa-check-circle fa-2x text-gray-300"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>

            <div class="col-xl-4 col-md-6 mb-4">
                <div class="card border-left-info shadow h-100 py-2">
                    <div class="card-body">
                        <div class="row no-gutters align-items-center">
                            <div class="col mr-2">
                                <div class="text-xs font-weight-bold text-info text-uppercase mb-1">
                                    Last Updated
                                </div>
                                <div class="h5 mb-0 font-weight-bold text-gray-800">
                                    {data.LastUpdated.Format("15:04")}
                                </div>
                            </div>
                            <div class="col-auto">
                                <i class="fas fa-clock fa-2x text-gray-300"></i>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>

        <!-- Policies Table -->
        <div class="row">
            <div class="col-12">
                <div class="card shadow mb-4">
                    <div class="card-header py-3 d-flex flex-row align-items-center justify-content-between">
                        <h6 class="m-0 font-weight-bold text-primary">
                            <i class="fas fa-shield-alt me-2"></i>IAM Policies
                        </h6>
                        <div class="dropdown no-arrow">
                            <a class="dropdown-toggle" href="#" role="button" data-bs-toggle="dropdown">
                                <i class="fas fa-ellipsis-v fa-sm fa-fw text-gray-400"></i>
                            </a>
                            <div class="dropdown-menu dropdown-menu-right shadow animated--fade-in">
                                <div class="dropdown-header">Actions:</div>
                                <a class="dropdown-item" href="#">
                                    <i class="fas fa-download me-2"></i>Export List
                                </a>
                            </div>
                        </div>
                    </div>
                    <div class="card-body">
                        <div class="table-responsive">
                            <table class="table table-hover" width="100%" cellspacing="0">
                                <thead>
                                    <tr>
                                        <th>Policy Name</th>
                                        <th>Version</th>
                                        <th>Statements</th>
                                        <th>Created</th>
                                        <th>Updated</th>
                                        <th>Actions</th>
                                    </tr>
                                </thead>
                                <tbody>
                                    for _, policy := range data.Policies {
                                        <tr>
                                            <td>
                                                <strong>{policy.Name}</strong>
                                            </td>
                                            <td>
                                                <span class="badge bg-info">{policy.Document.Version}</span>
                                            </td>
                                            <td>
                                                <span class="badge bg-secondary">{fmt.Sprintf("%d statements", len(policy.Document.Statement))}</span>
                                            </td>
                                            <td>
                                                <small class="text-muted">{policy.CreatedAt.Format("2006-01-02 15:04")}</small>
                                            </td>
                                            <td>
                                                <small class="text-muted">{policy.UpdatedAt.Format("2006-01-02 15:04")}</small>
                                            </td>
                                            <td>
                                                <div class="btn-group btn-group-sm" role="group">
                                                    <button type="button" class="btn btn-outline-info view-policy-btn" title="View Policy" data-policy-name={policy.Name}>
                                                        <i class="fas fa-eye"></i>
                                                    </button>
                                                    <button type="button" class="btn btn-outline-primary edit-policy-btn" title="Edit Policy" data-policy-name={policy.Name}>
                                                        <i class="fas fa-edit"></i>
                                                    </button>
                                                    <button type="button" class="btn btn-outline-danger delete-policy-btn" title="Delete Policy" data-policy-name={policy.Name}>
                                                        <i class="fas fa-trash"></i>
                                                    </button>
                                                </div>
                                            </td>
                                        </tr>
                                    }
                                    if len(data.Policies) == 0 {
                                        <tr>
                                            <td colspan="6" class="text-center text-muted py-4">
                                                <i class="fas fa-shield-alt fa-3x mb-3 text-muted"></i>
                                                <div>
                                                    <h5>No IAM policies found</h5>
                                                    <p>Create your first policy to manage access permissions.</p>
                                                    <button type="button" class="btn btn-primary" data-bs-toggle="modal" data-bs-target="#createPolicyModal">
                                                        <i class="fas fa-plus me-1"></i>Create Policy
                                                    </button>
                                                </div>
                                            </td>
                                        </tr>
                                    }
                                </tbody>
                            </table>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>

    <!-- Create Policy Modal -->
    <div class="modal fade" id="createPolicyModal" tabindex="-1" aria-labelledby="createPolicyModalLabel" aria-hidden="true">
        <div class="modal-dialog modal-lg">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="createPolicyModalLabel">
                        <i class="fas fa-shield-alt me-2"></i>Create IAM Policy
                    </h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                </div>
                <div class="modal-body">
                    <form id="createPolicyForm">
                        <div class="mb-3">
                            <label for="policyName" class="form-label">Policy Name</label>
                            <input type="text" class="form-control" id="policyName" name="name" required placeholder="e.g., S3ReadOnlyPolicy">
                            <div class="form-text">Enter a unique name for this policy (alphanumeric and underscores only)</div>
                        </div>
                        
                        <div class="mb-3">
                            <label for="policyDocument" class="form-label">Policy Document</label>
                            <textarea class="form-control" id="policyDocument" name="document" rows="15" required placeholder="Enter IAM policy JSON document..."></textarea>
                            <div class="form-text">Enter the policy document in AWS IAM JSON format</div>
                        </div>

                        <div class="mb-3">
                            <div class="row">
                                <div class="col-md-6">
                                    <button type="button" class="btn btn-outline-info btn-sm" onclick="insertSamplePolicy()">
                                        <i class="fas fa-file-alt me-1"></i>Use Sample Policy
                                    </button>
                                </div>
                                <div class="col-md-6 text-end">
                                    <button type="button" class="btn btn-outline-secondary btn-sm" onclick="validatePolicyDocument()">
                                        <i class="fas fa-check me-1"></i>Validate JSON
                                    </button>
                                </div>
                            </div>
                        </div>
                    </form>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
                    <button type="button" class="btn btn-primary" onclick="createPolicy()">
                        <i class="fas fa-plus me-1"></i>Create Policy
                    </button>
                </div>
            </div>
        </div>
    </div>

    <!-- View Policy Modal -->
    <div class="modal fade" id="viewPolicyModal" tabindex="-1" aria-labelledby="viewPolicyModalLabel" aria-hidden="true">
        <div class="modal-dialog modal-lg">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="viewPolicyModalLabel">
                        <i class="fas fa-eye me-2"></i>View IAM Policy
                    </h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                </div>
                <div class="modal-body">
                    <div id="viewPolicyContent">
                        <div class="text-center">
                            <div class="spinner-border" role="status">
                                <span class="visually-hidden">Loading...</span>
                            </div>
                            <p class="mt-2">Loading policy...</p>
                        </div>
                    </div>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Close</button>
                    <button type="button" class="btn btn-primary" id="editFromViewBtn">
                        <i class="fas fa-edit me-1"></i>Edit Policy
                    </button>
                </div>
            </div>
        </div>
    </div>

    <!-- Edit Policy Modal -->
    <div class="modal fade" id="editPolicyModal" tabindex="-1" aria-labelledby="editPolicyModalLabel" aria-hidden="true">
        <div class="modal-dialog modal-lg">
            <div class="modal-content">
                <div class="modal-header">
                    <h5 class="modal-title" id="editPolicyModalLabel">
                        <i class="fas fa-edit me-2"></i>Edit IAM Policy
                    </h5>
                    <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
                </div>
                <div class="modal-body">
                    <form id="editPolicyForm">
                        <div class="mb-3">
                            <label for="editPolicyName" class="form-label">Policy Name</label>
                            <input type="text" class="form-control" id="editPolicyName" name="name" readonly>
                            <div class="form-text">Policy name cannot be changed</div>
                        </div>
                        
                        <div class="mb-3">
                            <label for="editPolicyDocument" class="form-label">Policy Document</label>
                            <textarea class="form-control" id="editPolicyDocument" name="document" rows="15" required></textarea>
                            <div class="form-text">Edit the policy document in AWS IAM JSON format</div>
                        </div>

                        <div class="mb-3">
                            <div class="row">
                                <div class="col-md-6">
                                    <button type="button" class="btn btn-outline-info btn-sm" onclick="insertSamplePolicyEdit()">
                                        <i class="fas fa-file-alt me-1"></i>Reset to Sample
                                    </button>
                                </div>
                                <div class="col-md-6 text-end">
                                    <button type="button" class="btn btn-outline-secondary btn-sm" onclick="validateEditPolicyDocument()">
                                        <i class="fas fa-check me-1"></i>Validate JSON
                                    </button>
                                </div>
                            </div>
                        </div>
                    </form>
                </div>
                <div class="modal-footer">
                    <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Cancel</button>
                    <button type="button" class="btn btn-primary" onclick="updatePolicy()">
                        <i class="fas fa-save me-1"></i>Save Changes
                    </button>
                </div>
            </div>
        </div>
    </div>

    <!-- JavaScript for Policy Management -->
    <script>
    // Current policy being viewed/edited
    let currentPolicy = null;
    
    // Event listeners for policy actions
    document.addEventListener('DOMContentLoaded', function() {
        // View policy buttons
        document.querySelectorAll('.view-policy-btn').forEach(button => {
            button.addEventListener('click', function() {
                const policyName = this.getAttribute('data-policy-name');
                viewPolicy(policyName);
            });
        });
        
        // Edit policy buttons
        document.querySelectorAll('.edit-policy-btn').forEach(button => {
            button.addEventListener('click', function() {
                const policyName = this.getAttribute('data-policy-name');
                editPolicy(policyName);
            });
        });
        
        // Delete policy buttons
        document.querySelectorAll('.delete-policy-btn').forEach(button => {
            button.addEventListener('click', function() {
                const policyName = this.getAttribute('data-policy-name');
                deletePolicy(policyName);
            });
        });
        
        // Edit from view button
        document.getElementById('editFromViewBtn').addEventListener('click', function() {
            if (currentPolicy) {
                const viewModal = bootstrap.Modal.getInstance(document.getElementById('viewPolicyModal'));
                if (viewModal) viewModal.hide();
                editPolicy(currentPolicy.name);
            }
        });
    });
    
    function createPolicy() {
        const form = document.getElementById('createPolicyForm');
        const formData = new FormData(form);
        
        const policyName = formData.get('name');
        const policyDocumentText = formData.get('document');
        
        if (!policyName || !policyDocumentText) {
            alert('Please fill in all required fields');
            return;
        }
        
        let policyDocument;
        try {
            policyDocument = JSON.parse(policyDocumentText);
        } catch (e) {
            alert('Invalid JSON in policy document: ' + e.message);
            return;
        }
        
        const requestData = {
            name: policyName,
            document: policyDocument
        };
        
        fetch('/api/object-store/policies', {
            method: 'POST',
            headers: {
                'Content-Type': 'application/json',
            },
            body: JSON.stringify(requestData)
        })
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                alert('Policy created successfully!');
                const modal = bootstrap.Modal.getInstance(document.getElementById('createPolicyModal'));
                if (modal) modal.hide();
                location.reload(); // Refresh the page to show the new policy
            } else {
                alert('Error creating policy: ' + (data.error || 'Unknown error'));
            }
        })
        .catch(error => {
            console.error('Error:', error);
            alert('Error creating policy: ' + error.message);
        });
    }
    
    function viewPolicy(policyName) {
        // Show the modal first
        const modal = new bootstrap.Modal(document.getElementById('viewPolicyModal'));
        modal.show();
        
        // Reset content to loading state
        document.getElementById('viewPolicyContent').innerHTML = `
            <div class="text-center">
                <div class="spinner-border" role="status">
                    <span class="visually-hidden">Loading...</span>
                </div>
                <p class="mt-2">Loading policy...</p>
            </div>
        `;
        
        // Fetch policy data
        fetch('/api/object-store/policies/' + encodeURIComponent(policyName))
        .then(response => {
            if (!response.ok) {
                throw new Error('Policy not found');
            }
            return response.json();
        })
        .then(policy => {
            currentPolicy = policy;
            displayPolicyDetails(policy);
        })
        .catch(error => {
            console.error('Error:', error);
            document.getElementById('viewPolicyContent').innerHTML = `
                <div class="alert alert-danger" role="alert">
                    <i class="fas fa-exclamation-triangle me-2"></i>
                    Error loading policy: ${error.message}
                </div>
            `;
        });
    }
    
    function displayPolicyDetails(policy) {
        const content = document.getElementById('viewPolicyContent');
        
        let statementsHtml = '';
        if (policy.document && policy.document.Statement) {
            statementsHtml = policy.document.Statement.map((stmt, index) => `
                <div class="card mb-2">
                    <div class="card-header py-2">
                        <h6 class="mb-0">Statement ${index + 1}</h6>
                    </div>
                    <div class="card-body py-2">
                        <div class="row">
                            <div class="col-md-6">
                                <strong>Effect:</strong> 
                                <span class="badge ${stmt.Effect === 'Allow' ? 'bg-success' : 'bg-danger'}">${stmt.Effect}</span>
                            </div>
                            <div class="col-md-6">
                                <strong>Actions:</strong> ${Array.isArray(stmt.Action) ? stmt.Action.join(', ') : stmt.Action}
                            </div>
                        </div>
                        <div class="row mt-2">
                            <div class="col-12">
                                <strong>Resources:</strong> ${Array.isArray(stmt.Resource) ? stmt.Resource.join(', ') : stmt.Resource}
                            </div>
                        </div>
                    </div>
                </div>
            `).join('');
        }
        
        content.innerHTML = `
            <div class="row mb-3">
                <div class="col-md-6">
                    <strong>Policy Name:</strong> ${policy.name || 'Unknown'}
                </div>
                <div class="col-md-6">
                    <strong>Version:</strong> <span class="badge bg-info">${policy.document?.Version || 'Unknown'}</span>
                </div>
            </div>
            
            <div class="mb-3">
                <strong>Statements:</strong>
                <div class="mt-2">
                    ${statementsHtml || '<p class="text-muted">No statements found</p>'}
                </div>
            </div>
            
            <div class="mb-3">
                <strong>Raw Policy Document:</strong>
                <pre class="bg-light p-3 border rounded mt-2"><code>${JSON.stringify(policy.document, null, 2)}</code></pre>
            </div>
        `;
    }
    
    function editPolicy(policyName) {
        // Show the modal first
        const modal = new bootstrap.Modal(document.getElementById('editPolicyModal'));
        modal.show();
        
        // Set policy name
        document.getElementById('editPolicyName').value = policyName;
        document.getElementById('editPolicyDocument').value = 'Loading...';
        
        // Fetch policy data
        fetch('/api/object-store/policies/' + encodeURIComponent(policyName))
        .then(response => {
            if (!response.ok) {
                throw new Error('Policy not found');
            }
            return response.json();
        })
        .then(policy => {
            currentPolicy = policy;
            document.getElementById('editPolicyDocument').value = JSON.stringify(policy.document, null, 2);
        })
        .catch(error => {
            console.error('Error:', error);
            alert('Error loading policy for editing: ' + error.message);
            const editModal = bootstrap.Modal.getInstance(document.getElementById('editPolicyModal'));
            if (editModal) editModal.hide();
        });
    }
    
    function updatePolicy() {
        const policyName = document.getElementById('editPolicyName').value;
        const policyDocumentText = document.getElementById('editPolicyDocument').value;
        
        if (!policyName || !policyDocumentText) {
            alert('Please fill in all required fields');
            return;
        }
        
        let policyDocument;
        try {
            policyDocument = JSON.parse(policyDocumentText);
        } catch (e) {
            alert('Invalid JSON in policy document: ' + e.message);
            return;
        }
        
        const requestData = {
            document: policyDocument
        };
        
        fetch('/api/object-store/policies/' + encodeURIComponent(policyName), {
            method: 'PUT',
            headers: {
                'Content-Type': 'application/json',
            },
            body: JSON.stringify(requestData)
        })
        .then(response => response.json())
        .then(data => {
            if (data.success) {
                alert('Policy updated successfully!');
                const modal = bootstrap.Modal.getInstance(document.getElementById('editPolicyModal'));
                if (modal) modal.hide();
                location.reload(); // Refresh the page to show the updated policy
            } else {
                alert('Error updating policy: ' + (data.error || 'Unknown error'));
            }
        })
        .catch(error => {
            console.error('Error:', error);
            alert('Error updating policy: ' + error.message);
        });
    }
    
    function insertSamplePolicy() {
        const samplePolicy = {
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Action": [
                        "s3:GetObject",
                        "s3:PutObject"
                    ],
                    "Resource": [
                        "arn:aws:s3:::my-bucket/*"
                    ]
                }
            ]
        };
        
        document.getElementById('policyDocument').value = JSON.stringify(samplePolicy, null, 2);
    }
    
    function insertSamplePolicyEdit() {
        const samplePolicy = {
            "Version": "2012-10-17",
            "Statement": [
                {
                    "Effect": "Allow",
                    "Action": [
                        "s3:GetObject",
                        "s3:PutObject"
                    ],
                    "Resource": [
                        "arn:aws:s3:::my-bucket/*"
                    ]
                }
            ]
        };
        
        document.getElementById('editPolicyDocument').value = JSON.stringify(samplePolicy, null, 2);
    }
    
    function validatePolicyDocument() {
        const policyText = document.getElementById('policyDocument').value;
        validatePolicyJSON(policyText);
    }
    
    function validateEditPolicyDocument() {
        const policyText = document.getElementById('editPolicyDocument').value;
        validatePolicyJSON(policyText);
    }
    
    function validatePolicyJSON(policyText) {
        if (!policyText) {
            alert('Please enter a policy document first');
            return;
        }
        
        try {
            const policy = JSON.parse(policyText);
            
            // Basic validation
            if (!policy.Version) {
                alert('Policy must have a Version field');
                return;
            }
            
            if (!policy.Statement || !Array.isArray(policy.Statement)) {
                alert('Policy must have a Statement array');
                return;
            }
            
            alert('Policy document is valid JSON!');
        } catch (e) {
            alert('Invalid JSON: ' + e.message);
        }
    }
    
    function deletePolicy(policyName) {
        if (confirm('Are you sure you want to delete policy "' + policyName + '"?')) {
            fetch('/api/object-store/policies/' + encodeURIComponent(policyName), {
                method: 'DELETE'
            })
            .then(response => response.json())
            .then(data => {
                if (data.success) {
                    alert('Policy deleted successfully!');
                    location.reload(); // Refresh the page
                } else {
                    alert('Error deleting policy: ' + (data.error || 'Unknown error'));
                }
            })
            .catch(error => {
                console.error('Error:', error);
                alert('Error deleting policy: ' + error.message);
            });
        }
    }
    </script>
}