version 1 - forecsat initial

assets/js/forecasting.js

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+$(document).ready(function() {
+    // Version selector
+    $('#versionSelector').on('change', function() {
+        const projectId = new URLSearchParams(window.location.search).get('projectId');
+        const version = $(this).val();
+        window.location.href = `forecasting.php?projectId=${projectId}&version=${version}`;
+    });
+
+    // Roster search with Select2
+    $('#rosterSearch').select2({
+        theme: 'bootstrap-5',
+        placeholder: 'Search by name or SAP code...',
+        allowClear: true
+    });
+
+    // --- Inline editing for allocated days ---
+    const table = document.querySelector('.table');
+    let originalValue = null;
+
+    // Use event delegation on the table body
+    const tableBody = table.querySelector('tbody');
+
+    tableBody.addEventListener('click', function(event) {
+        const cell = event.target.closest('.editable');
+        if (!cell) return; // Clicked outside an editable cell
+
+        // If the cell is already being edited, do nothing
+        if (cell.isContentEditable) return;
+
+        originalValue = cell.textContent.trim();
+        cell.setAttribute('contenteditable', 'true');
+        
+        // Select all text in the cell
+        const range = document.createRange();
+        range.selectNodeContents(cell);
+        const selection = window.getSelection();
+        selection.removeAllRanges();
+        selection.addRange(range);
+        
+        cell.focus();
+    });
+
+    tableBody.addEventListener('focusout', function(event) {
+        const cell = event.target.closest('.editable');
+        if (!cell) return;
+
+        cell.removeAttribute('contenteditable');
+        const newValue = cell.textContent.trim();
+
+        // Only update if the value has changed and is a valid number
+        if (newValue !== originalValue && !isNaN(newValue)) {
+            updateAllocation(cell, newValue);
+        } else if (newValue !== originalValue) {
+            // Revert if the new value is not a number
+            cell.textContent = originalValue;
+        }
+    });
+
+    tableBody.addEventListener('keydown', function(event) {
+        if (event.key === 'Enter' && event.target.classList.contains('editable')) {
+            event.preventDefault();
+            event.target.blur(); // Triggers focusout to save
+        } else if (event.key === 'Escape' && event.target.classList.contains('editable')) {
+            event.target.textContent = originalValue; // Revert changes
+            event.target.blur(); // Trigger focusout
+        }
+    });
+
+    function updateAllocation(cell, allocatedDays) {
+        const rosterId = cell.dataset.rosterId;
+        const month = cell.dataset.month;
+        const forecastingId = cell.dataset.forecastingId;
+        const projectId = new URLSearchParams(window.location.search).get('projectId');
+        const originalContent = cell.innerHTML;
+
+        // Add loading indicator
+        cell.innerHTML = `<span class="spinner-border spinner-border-sm" role="status" aria-hidden="true"></span>`;
+
+        $.ajax({
+            url: 'forecasting_actions.php',
+            type: 'POST',
+            dataType: 'json',
+            data: {
+                action: 'update_allocation',
+                forecastingId: forecastingId,
+                rosterId: rosterId,
+                month: month,
+                allocatedDays: allocatedDays,
+                projectId: projectId
+            },
+            success: function(response) {
+                if (response.success) {
+                    // The server-side action reloads the page, so no need to update the cell manually.
+                    // If the reload were disabled, we'd do: cell.textContent = allocatedDays;
+                    window.location.reload(); // Ensure data consistency
+                } else {
+                    console.error('Update failed:', response.error);
+                    alert('Error: ' + response.error);
+                    cell.innerHTML = originalContent; // Revert on failure
+                }
+            },
+            error: function(xhr, status, error) {
+                console.error('AJAX error:', error);
+                alert('An unexpected error occurred. Please try again.');
+                cell.innerHTML = originalContent; // Revert on AJAX error
+            }
+        });
+    }
+});

db/migrations/003_create_forecasting_tables.sql

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+CREATE TABLE IF NOT EXISTS `forecasting` (
+    `id` INT AUTO_INCREMENT PRIMARY KEY,
+    `projectId` INT NOT NULL,
+    `versionNumber` INT NOT NULL,
+    `createdAt` DATETIME NOT NULL,
+    FOREIGN KEY (`projectId`) REFERENCES `projects`(`id`) ON DELETE CASCADE
+);
+
+CREATE TABLE IF NOT EXISTS `forecastAllocation` (
+    `id` INT AUTO_INCREMENT PRIMARY KEY,
+    `forecastingId` INT NOT NULL,
+    `rosterId` INT NOT NULL,
+    `resourceName` VARCHAR(255) NOT NULL,
+    `level` VARCHAR(255) NOT NULL,
+    `month` DATE NOT NULL,
+    `allocatedDays` DECIMAL(5, 2) NOT NULL DEFAULT 0.00,
+    FOREIGN KEY (`forecastingId`) REFERENCES `forecasting`(`id`) ON DELETE CASCADE,
+    FOREIGN KEY (`rosterId`) REFERENCES `roster`(`id`) ON DELETE CASCADE
+);

db/migrations/004_add_unique_key_to_forecast_allocation.sql

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+ALTER TABLE `forecastAllocation` ADD UNIQUE KEY `unique_allocation` (`forecastingId`, `rosterId`, `month`);

db/migrations/005_create_project_finance_monthly_table.sql

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+CREATE TABLE IF NOT EXISTS `projectFinanceMonthly` (
+    `id` INT AUTO_INCREMENT PRIMARY KEY,
+    `projectId` INT NOT NULL,
+    `metricName` VARCHAR(255) NOT NULL,
+    `month` DATE NOT NULL,
+    `amount` DECIMAL(15, 2) NOT NULL,
+    `createdAt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    `updatedAt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    FOREIGN KEY (`projectId`) REFERENCES `projects`(`id`) ON DELETE CASCADE,
+    UNIQUE KEY `project_metric_month` (`projectId`, `metricName`, `month`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

export_project_finance.php

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+<?php
+require_once __DIR__ . '/db/config.php';
+
+// --- DATA FETCHING & CALCULATION ---
+$project = null;
+$project_id = $_GET['project_id'] ?? null;
+$financial_data = [];
+$months = [];
+$metrics = ["Opening Balance", "Billings", "WIP", "Expenses", "Cost", "NSR", "Margin"];
+
+if (!$project_id) {
+    header("HTTP/1.0 400 Bad Request");
+    echo "Project ID is required.";
+    exit;
+}
+
+try {
+    $pdo = db();
+    $stmt = $pdo->prepare("SELECT * FROM projects WHERE id = :id");
+    $stmt->execute([':id' => $project_id]);
+    $project = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if ($project) {
+        function get_month_range($start_date_str, $end_date_str) {
+            $months = [];
+            if (empty($start_date_str) || empty($end_date_str)) return $months;
+            $start = new DateTime($start_date_str);
+            $end = new DateTime($end_date_str);
+            $current = clone $start;
+            $current->modify('first day of this month');
+            while ($current <= $end) {
+                $months[] = $current->format('Y-m-01');
+                $current->modify('+1 month');
+            }
+            return $months;
+        }
+        $months = get_month_range($project['startDate'], $project['endDate']);
+
+        foreach ($metrics as $metric) {
+            foreach ($months as $month) {
+                $financial_data[$metric][$month] = 0;
+            }
+        }
+
+        $forecast_stmt = $pdo->prepare("SELECT id FROM forecasting WHERE projectId = :pid ORDER BY versionNumber DESC LIMIT 1");
+        $forecast_stmt->execute([':pid' => $project_id]);
+        $latest_forecast = $forecast_stmt->fetch(PDO::FETCH_ASSOC);
+
+        if ($latest_forecast) {
+            $cost_sql = "
+                SELECT fa.month, SUM(fa.allocatedDays * r.totalMonthlyCost) as totalCost
+                FROM forecastAllocation fa
+                JOIN roster r ON fa.rosterId = r.id
+                WHERE fa.forecastingId = :fid
+                GROUP BY fa.month
+            ";
+            $cost_stmt = $pdo->prepare($cost_sql);
+            $cost_stmt->execute([':fid' => $latest_forecast['id']]);
+            $monthly_costs = $cost_stmt->fetchAll(PDO::FETCH_KEY_PAIR);
+
+            foreach ($monthly_costs as $month => $cost) {
+                $formatted_month = date('Y-m-01', strtotime($month));
+                if (isset($financial_data['Cost'][$formatted_month])) {
+                    $financial_data['Cost'][$formatted_month] = $cost;
+                }
+            }
+        }
+    }
+} catch (PDOException $e) {
+    header("HTTP/1.0 500 Internal Server Error");
+    echo "Database error: " . $e->getMessage();
+    exit;
+}
+
+if (!$project) {
+    header("HTTP/1.0 404 Not Found");
+    echo "Project not found.";
+    exit;
+}
+
+// --- CSV EXPORT ---
+$filename = "project_finance_" . preg_replace('/[^a-zA-Z0-9_]/', '_', $project['name']) . ".csv";
+
+header('Content-Type: text/csv');
+header('Content-Disposition: attachment; filename="' . $filename . '"');
+
+$output = fopen('php://output', 'w');
+
+// Header row
+$header = ['Metric'];
+foreach ($months as $month) {
+    $header[] = date('M Y', strtotime($month));
+}
+fputcsv($output, $header);
+
+// Data rows
+foreach ($metrics as $metric) {
+    $row = [$metric];
+    foreach ($months as $month) {
+        $row[] = number_format($financial_data[$metric][$month] ?? 0, 2);
+    }
+    fputcsv($output, $row);
+}
+
+fclose($output);
+exit;

forecasting.php

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+<?php
+require_once __DIR__ . '/db/config.php';
+
+$projectId = $_GET['projectId'] ?? null;
+$versionNumber = $_GET['version'] ?? null;
+
+if (!$projectId) {
+    die("Project ID is required.");
+}
+
+function execute_sql_from_file($pdo, $filepath) {
+    try {
+        $sql = file_get_contents($filepath);
+        $pdo->exec($sql);
+        return true;
+    } catch (PDOException $e) {
+        if (strpos($e->getMessage(), 'already exists') === false) {
+            error_log("SQL Execution Error: " . $e->getMessage());
+        }
+        return false;
+    }
+}
+
+$project = null;
+$versions = [];
+$allocations = [];
+$roster_for_search = [];
+$db_error = null;
+
+function get_months($startDate, $endDate) {
+    $start = new DateTime($startDate);
+    $end = new DateTime($endDate);
+    $interval = new DateInterval('P1M');
+    $period = new DatePeriod($start, $interval, $end->modify('+1 month'));
+    $months = [];
+    foreach ($period as $dt) {
+        $months[] = $dt->format('Y-m-01');
+    }
+    return $months;
+}
+
+try {
+    $pdo = db();
+
+    // Apply all migrations
+    $migration_files = glob(__DIR__ . '/db/migrations/*.sql');
+    sort($migration_files);
+    foreach ($migration_files as $file) {
+        execute_sql_from_file($pdo, $file);
+    }
+
+    // Fetch project details
+    $stmt = $pdo->prepare("SELECT * FROM projects WHERE id = :projectId");
+    $stmt->execute([':projectId' => $projectId]);
+    $project = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if (!$project) {
+        die("Project not found.");
+    }
+
+    // Fetch forecasting versions
+    $stmt = $pdo->prepare("SELECT * FROM forecasting WHERE projectId = :projectId ORDER BY versionNumber DESC");
+    $stmt->execute([':projectId' => $projectId]);
+    $versions = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+    if (empty($versionNumber) && !empty($versions)) {
+        $versionNumber = $versions[0]['versionNumber'];
+    }
+
+    $selected_version = null;
+    if ($versionNumber) {
+        foreach($versions as $v) {
+            if ($v['versionNumber'] == $versionNumber) {
+                $selected_version = $v;
+                break;
+            }
+        }
+    }
+
+    // Fetch allocations for the selected version
+    if ($selected_version) {
+        $months = get_months($project['startDate'], $project['endDate']);
+        $sql = "SELECT 
+                    fa.rosterId, 
+                    fa.resourceName, 
+                    fa.level, 
+                    GROUP_CONCAT(fa.month, '|', fa.allocatedDays ORDER BY fa.month) as monthly_allocations
+                FROM forecastAllocation fa
+                WHERE fa.forecastingId = :forecastingId
+                GROUP BY fa.rosterId, fa.resourceName, fa.level
+                ORDER BY fa.resourceName";
+        $stmt = $pdo->prepare($sql);
+        $stmt->execute([':forecastingId' => $selected_version['id']]);
+        $raw_allocations = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+        // Process allocations into a structured array
+        foreach ($raw_allocations as $raw_row) {
+            $alloc_row = [
+                'rosterId' => $raw_row['rosterId'],
+                'resourceName' => $raw_row['resourceName'],
+                'level' => $raw_row['level'],
+                'months' => []
+            ];
+            foreach($months as $month) {
+                $alloc_row['months'][$month] = 0; // Default
+            }
+            $monthly_pairs = explode(',', $raw_row['monthly_allocations']);
+            foreach ($monthly_pairs as $pair) {
+                list($month, $days) = explode('|', $pair);
+                $alloc_row['months'][$month] = $days;
+            }
+            $allocations[] = $alloc_row;
+        }
+    }
+
+    // Fetch roster for search
+    $stmt = $pdo->query("SELECT id, sapCode, fullNameEn, `level` FROM roster ORDER BY fullNameEn");
+    $roster_for_search = $stmt->fetchAll(PDO::FETCH_ASSOC);
+
+} catch (PDOException $e) {
+    $db_error = "Database error: " . $e->getMessage();
+}
+
+$months_headers = $project ? get_months($project['startDate'], $project['endDate']) : [];
+
+?>
+<!DOCTYPE html>
+<html lang="en" data-bs-theme="dark">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Forecasting - <?php echo htmlspecialchars($project['name'] ?? ''); ?></title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css">
+    <link href="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/css/select2.min.css" rel="stylesheet" />
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/select2-bootstrap-5-theme@1.3.0/dist/select2-bootstrap-5-theme.min.css" />
+    <link rel="stylesheet" href="assets/css/custom.css?v=<?php echo time(); ?>">
+</head>
+<body>
+    <div class="top-navbar">
+        Project Financials
+    </div>
+    <div class="main-wrapper">
+        <nav class="sidebar">
+            <ul class="nav flex-column">
+                <li class="nav-item"><a class="nav-link" href="index.php"><i class="bi bi-people-fill me-2"></i>Roster</a></li>
+                <li class="nav-item"><a class="nav-link active" href="projects.php"><i class="bi bi-briefcase-fill me-2"></i>Projects</a></li>
+            </ul>
+        </nav>
+
+        <main class="content-wrapper">
+            <?php if ($db_error): ?>
+                <div class="alert alert-danger"><?php echo htmlspecialchars($db_error); ?></div>
+            <?php endif; ?>
+
+            <div class="page-header">
+                <h1 class="h2">Forecasting: <?php echo htmlspecialchars($project['name'] ?? 'N/A'); ?></h1>
+                <div class="header-actions">
+                    <a href="project_details.php?id=<?php echo $projectId; ?>" class="btn btn-secondary"><i class="bi bi-arrow-left-circle me-2"></i>Back to Project</a>
+                    <form action="forecasting_actions.php" method="POST" class="d-inline">
+                        <input type="hidden" name="action" value="new_version">
+                        <input type="hidden" name="projectId" value="<?php echo $projectId; ?>">
+                        <button type="submit" class="btn btn-primary"><i class="bi bi-plus-circle-fill me-2"></i>New Version</button>
+                    </form>
+                </div>
+            </div>
+
+            <div class="card mb-4">
+                <div class="card-body">
+                    <div class="row align-items-center">
+                        <div class="col-md-4">
+                            <label for="versionSelector" class="form-label">Select Version</label>
+                            <select class="form-select" id="versionSelector">
+                                <?php foreach ($versions as $v): ?>
+                                    <option value="<?php echo $v['versionNumber']; ?>" <?php echo ($v['versionNumber'] == $versionNumber) ? 'selected' : ''; ?>>
+                                        Version <?php echo $v['versionNumber']; ?> (<?php echo date("d M Y, H:i", strtotime($v['createdAt'])); ?>)
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <div class="card">
+                <div class="card-header">
+                    <h5 class="card-title">Resource Allocations</h5>
+                </div>
+                <div class="card-body">
+                    <form action="forecasting_actions.php" method="POST" class="row g-3 align-items-end mb-4">
+                        <input type="hidden" name="action" value="add_resource">
+                        <input type="hidden" name="projectId" value="<?php echo $projectId; ?>">
+                        <input type="hidden" name="forecastingId" value="<?php echo $selected_version['id'] ?? ''; ?>">
+                        <div class="col-md-6">
+                            <label for="rosterSearch" class="form-label">Add Resource</label>
+                            <select class="form-control" id="rosterSearch" name="rosterId" required>
+                                <option></option> <!-- Placeholder for Select2 -->
+                                <?php foreach ($roster_for_search as $resource): ?>
+                                    <option value="<?php echo $resource['id']; ?>" data-level="<?php echo htmlspecialchars($resource['level']); ?>">
+                                        <?php echo htmlspecialchars($resource['fullNameEn'] . ' (' . $resource['sapCode'] . ')'); ?>
+                                    </option>
+                                <?php endforeach; ?>
+                            </select>
+                        </div>
+                        <div class="col-auto">
+                            <button type="submit" class="btn btn-success">Add to Forecast</button>
+                        </div>
+                    </form>
+                </div>
+                <div class="table-responsive">
+                    <table class="table table-bordered table-hover">
+                        <thead>
+                            <tr>
+                                <th>Resource Name</th>
+                                <th>Level</th>
+                                <?php foreach ($months_headers as $month): ?>
+                                    <th><?php echo date("M Y", strtotime($month)); ?></th>
+                                <?php endforeach; ?>
+                                <th>Actions</th>
+                            </tr>
+                        </thead>
+                        <tbody>
+                            <?php if (empty($allocations)): ?>
+                                <tr>
+                                    <td colspan="<?php echo count($months_headers) + 3; ?>" class="text-center text-secondary">No resources allocated yet.</td>
+                                </tr>
+                            <?php else: ?>
+                                <?php foreach ($allocations as $alloc_row): ?>
+                                    <tr>
+                                        <td><?php echo htmlspecialchars($alloc_row['resourceName']); ?></td>
+                                        <td><?php echo htmlspecialchars($alloc_row['level']); ?></td>
+                                        <?php foreach ($alloc_row['months'] as $month => $days): ?>
+                                            <td class="editable" 
+                                                data-month="<?php echo $month; ?>" 
+                                                data-roster-id="<?php echo $alloc_row['rosterId']; ?>"
+                                                data-forecasting-id="<?php echo $selected_version['id']; ?>">
+                                                <?php echo htmlspecialchars($days); ?>
+                                            </td>
+                                        <?php endforeach; ?>
+                                        <td>
+                                            <form action="forecasting_actions.php" method="POST" onsubmit="return confirm('Remove this resource from the forecast?');">
+                                                <input type="hidden" name="action" value="remove_resource">
+                                                <input type="hidden" name="projectId" value="<?php echo $projectId; ?>">
+                                                <input type="hidden" name="forecastingId" value="<?php echo $selected_version['id']; ?>">
+                                                <input type="hidden" name="rosterId" value="<?php echo $alloc_row['rosterId']; ?>">
+                                                <button type="submit" class="btn btn-sm btn-outline-danger"><i class="bi bi-trash"></i></button>
+                                            </form>
+                                        </td>
+                                    </tr>
+                                <?php endforeach; ?>
+                            <?php endif; ?>
+                        </tbody>
+                    </table>
+                </div>
+            </div>
+        </main>
+    </div>
+
+    <script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/select2@4.1.0-rc.0/dist/js/select2.min.js"></script>
+    <script src="assets/js/forecasting.js?v=<?php echo time(); ?>"></script>
+</body>
+</html>

forecasting_actions.php

@@ -0,0 +1,186 @@
+<?php
+require_once __DIR__ . '/db/config.php';
+
+$action = $_POST['action'] ?? null;
+$projectId = $_POST['projectId'] ?? null;
+
+if (!$action || !$projectId) {
+    redirect_with_error('forecasting.php', $projectId, 'Invalid request.');
+}
+
+function redirect_with_error($page, $projectId, $message) {
+    $version = $_POST['version'] ?? null;
+    $query = http_build_query(array_filter([
+        'projectId' => $projectId,
+        'version' => $version,
+        'error' => $message
+    ]));
+    header("Location: {$page}?{$query}");
+    exit();
+}
+
+function redirect_with_success($page, $projectId, $message) {
+    $version = $_POST['version'] ?? null;
+    $query = http_build_query(array_filter([
+        'projectId' => $projectId,
+        'version' => $version,
+        'success' => $message
+    ]));
+    header("Location: {$page}?{$query}");
+    exit();
+}
+
+function get_months($startDate, $endDate) {
+    $start = new DateTime($startDate);
+    $end = new DateTime($endDate);
+    $interval = new DateInterval('P1M');
+    $period = new DatePeriod($start, $interval, $end->modify('+1 month'));
+    $months = [];
+    foreach ($period as $dt) {
+        $months[] = $dt->format('Y-m-01');
+    }
+    return $months;
+}
+
+try {
+    $pdo = db();
+
+    switch ($action) {
+        case 'new_version':
+            // Find the latest version number
+            $stmt = $pdo->prepare("SELECT MAX(versionNumber) as max_version FROM forecasting WHERE projectId = :projectId");
+            $stmt->execute([':projectId' => $projectId]);
+            $latest_version_num = $stmt->fetchColumn();
+            $new_version_num = $latest_version_num + 1;
+
+            // Get the ID of the latest version to clone from
+            $stmt = $pdo->prepare("SELECT id FROM forecasting WHERE projectId = :projectId AND versionNumber = :versionNumber");
+            $stmt->execute([':projectId' => $projectId, ':versionNumber' => $latest_version_num]);
+            $latest_version_id = $stmt->fetchColumn();
+
+            $pdo->beginTransaction();
+
+            // Create the new forecasting version
+            $stmt = $pdo->prepare("INSERT INTO forecasting (projectId, versionNumber, createdAt) VALUES (:projectId, :versionNumber, NOW())");
+            $stmt->execute([':projectId' => $projectId, ':versionNumber' => $new_version_num]);
+            $new_version_id = $pdo->lastInsertId();
+
+            // Clone allocations from the latest version if it exists
+            if ($latest_version_id) {
+                $clone_sql = "INSERT INTO forecastAllocation (forecastingId, rosterId, resourceName, level, month, allocatedDays) 
+                              SELECT :new_version_id, rosterId, resourceName, level, month, allocatedDays 
+                              FROM forecastAllocation WHERE forecastingId = :latest_version_id";
+                $stmt = $pdo->prepare($clone_sql);
+                $stmt->execute([':new_version_id' => $new_version_id, ':latest_version_id' => $latest_version_id]);
+            }
+
+            $pdo->commit();
+            redirect_with_success('forecasting.php', $projectId, 'New version created successfully.', ['version' => $new_version_num]);
+            break;
+
+        case 'add_resource':
+            $forecastingId = $_POST['forecastingId'] ?? null;
+            $rosterId = $_POST['rosterId'] ?? null;
+
+            if (!$forecastingId || !$rosterId) {
+                redirect_with_error('forecasting.php', $projectId, 'Missing data for adding resource.');
+            }
+
+            // Fetch project and roster details
+            $stmt = $pdo->prepare("SELECT startDate, endDate FROM projects WHERE id = :projectId");
+            $stmt->execute([':projectId' => $projectId]);
+            $project = $stmt->fetch(PDO::FETCH_ASSOC);
+
+            $stmt = $pdo->prepare("SELECT fullNameEn, `level` FROM roster WHERE id = :rosterId");
+            $stmt->execute([':rosterId' => $rosterId]);
+            $roster = $stmt->fetch(PDO::FETCH_ASSOC);
+
+            if (!$project || !$roster) {
+                redirect_with_error('forecasting.php', $projectId, 'Project or resource not found.');
+            }
+
+            $months = get_months($project['startDate'], $project['endDate']);
+            $insert_sql = "INSERT INTO forecastAllocation (forecastingId, rosterId, resourceName, level, month, allocatedDays) VALUES (:forecastingId, :rosterId, :resourceName, :level, :month, 0)";
+            $stmt = $pdo->prepare($insert_sql);
+
+            $pdo->beginTransaction();
+            foreach ($months as $month) {
+                $stmt->execute([
+                    ':forecastingId' => $forecastingId,
+                    ':rosterId' => $rosterId,
+                    ':resourceName' => $roster['fullNameEn'],
+                    ':level' => $roster['level'],
+                    ':month' => $month
+                ]);
+            }
+            $pdo->commit();
+
+            redirect_with_success('forecasting.php', $projectId, 'Resource added to forecast.');
+            break;
+
+        case 'remove_resource':
+            $forecastingId = $_POST['forecastingId'] ?? null;
+            $rosterId = $_POST['rosterId'] ?? null;
+
+            if (!$forecastingId || !$rosterId) {
+                redirect_with_error('forecasting.php', $projectId, 'Missing data for removing resource.');
+            }
+
+            $sql = "DELETE FROM forecastAllocation WHERE forecastingId = :forecastingId AND rosterId = :rosterId";
+            $stmt = $pdo->prepare($sql);
+            $stmt->execute([':forecastingId' => $forecastingId, ':rosterId' => $rosterId]);
+
+            redirect_with_success('forecasting.php', $projectId, 'Resource removed from forecast.');
+            break;
+
+        case 'update_allocation':
+            header('Content-Type: application/json');
+            $forecastingId = $_POST['forecastingId'] ?? null;
+            $rosterId = $_POST['rosterId'] ?? null;
+            $month = $_POST['month'] ?? null;
+            $allocatedDays = $_POST['allocatedDays'] ?? null;
+
+            if (!$forecastingId || !$rosterId || !$month || !isset($allocatedDays)) {
+                echo json_encode(['success' => false, 'error' => 'Invalid data for update.']);
+                exit();
+            }
+
+            // Use INSERT ... ON DUPLICATE KEY UPDATE to handle both new and existing cells
+            $sql = "INSERT INTO forecastAllocation (forecastingId, rosterId, month, allocatedDays, resourceName, level) 
+                    VALUES (:forecastingId, :rosterId, :month, :allocatedDays, 
+                            (SELECT fullNameEn FROM roster WHERE id = :rosterId), 
+                            (SELECT `level` FROM roster WHERE id = :rosterId))
+                    ON DUPLICATE KEY UPDATE allocatedDays = :allocatedDays";
+            
+            // We need a unique key on (forecastingId, rosterId, month) for this to work.
+            // Let's assume it exists. If not, we need to add it.
+            // ALTER TABLE forecastAllocation ADD UNIQUE KEY `unique_allocation` (`forecastingId`, `rosterId`, `month`);
+
+            $stmt = $pdo->prepare($sql);
+            $stmt->execute([
+                ':forecastingId' => $forecastingId,
+                ':rosterId' => $rosterId,
+                ':month' => $month,
+                ':allocatedDays' => $allocatedDays
+            ]);
+
+            echo json_encode(['success' => true]);
+            exit();
+
+        default:
+            redirect_with_error('forecasting.php', $projectId, 'Invalid action specified.');
+            break;
+    }
+
+} catch (PDOException $e) {
+    if ($pdo->inTransaction()) {
+        $pdo->rollBack();
+    }
+    if ($action === 'update_allocation') {
+        header('Content-Type: application/json');
+        echo json_encode(['success' => false, 'error' => 'Database error: ' . $e->getMessage()]);
+    } else {
+        redirect_with_error('forecasting.php', $projectId, 'Database error: ' . $e->getMessage());
+    }
+    exit();
+}

index.php

@@ -220,7 +220,14 @@ $search_term = $_GET['search'] ?? '';
 
 try {
     $pdo = db();
-    execute_sql_from_file($pdo, __DIR__ . '/db/migrations/001_create_roster_table.sql');
+    
+    // Apply all migrations
+    $migration_files = glob(__DIR__ . '/db/migrations/*.sql');
+    sort($migration_files);
+    foreach ($migration_files as $file) {
+        execute_sql_from_file($pdo, $file);
+    }
+
     seed_roster_data($pdo);
 
     $sql = "SELECT * FROM roster";

project_details.php

@@ -0,0 +1,218 @@
+<?php
+require_once __DIR__ . '/db/config.php';
+
+// --- DATABASE MIGRATION ---
+function execute_sql_from_file($pdo, $filepath) {
+    try {
+        $sql = file_get_contents($filepath);
+        if ($sql === false) return false;
+        $pdo->exec($sql);
+        return true;
+    } catch (PDOException $e) {
+        // Ignore errors about tables/columns that already exist
+        if (strpos($e->getMessage(), 'already exists') === false && strpos($e->getMessage(), 'Duplicate column name') === false) {
+            error_log("SQL Execution Error in $filepath: " . $e->getMessage());
+        }
+        return false;
+    }
+}
+
+try {
+    $pdo = db();
+    $migration_files = glob(__DIR__ . '/db/migrations/*.sql');
+    sort($migration_files);
+    foreach ($migration_files as $file) {
+        execute_sql_from_file($pdo, $file);
+    }
+} catch (PDOException $e) {
+    $db_error = "Database connection failed: " . $e->getMessage();
+    // Stop execution if DB connection fails
+    die($db_error);
+}
+
+// --- DATA FETCHING & CALCULATION ---
+$project = null;
+$project_id = $_GET['id'] ?? null;
+$financial_data = [];
+$months = [];
+$metrics = ["Opening Balance", "Billings", "WIP", "Expenses", "Cost", "NSR", "Margin"];
+
+if ($project_id) {
+    $stmt = $pdo->prepare("SELECT * FROM projects WHERE id = :id");
+    $stmt->execute([':id' => $project_id]);
+    $project = $stmt->fetch(PDO::FETCH_ASSOC);
+
+    if ($project) {
+        // Helper to generate month range
+        function get_month_range($start_date_str, $end_date_str) {
+            $months = [];
+            if (empty($start_date_str) || empty($end_date_str)) return $months;
+            $start = new DateTime($start_date_str);
+            $end = new DateTime($end_date_str);
+            $current = clone $start;
+            $current->modify('first day of this month');
+
+            while ($current <= $end) {
+                $months[] = $current->format('Y-m-01');
+                $current->modify('+1 month');
+            }
+            return $months;
+        }
+        $months = get_month_range($project['startDate'], $project['endDate']);
+
+        // Initialize financial data structure
+        foreach ($metrics as $metric) {
+            foreach ($months as $month) {
+                $financial_data[$metric][$month] = 0;
+            }
+        }
+
+        // Find the latest forecast version
+        $forecast_stmt = $pdo->prepare("SELECT id FROM forecasting WHERE projectId = :pid ORDER BY versionNumber DESC LIMIT 1");
+        $forecast_stmt->execute([':pid' => $project_id]);
+        $latest_forecast = $forecast_stmt->fetch(PDO::FETCH_ASSOC);
+
+        if ($latest_forecast) {
+            // Calculate monthly costs
+            $cost_sql = "
+                SELECT
+                    fa.month,
+                    SUM(fa.allocatedDays * r.totalMonthlyCost) as totalCost
+                FROM forecastAllocation fa
+                JOIN roster r ON fa.rosterId = r.id
+                WHERE fa.forecastingId = :fid
+                GROUP BY fa.month
+            ";
+            $cost_stmt = $pdo->prepare($cost_sql);
+            $cost_stmt->execute([':fid' => $latest_forecast['id']]);
+            $monthly_costs = $cost_stmt->fetchAll(PDO::FETCH_KEY_PAIR);
+
+            foreach ($monthly_costs as $month => $cost) {
+                // Ensure month format is consistent
+                $formatted_month = date('Y-m-01', strtotime($month));
+                if (isset($financial_data['Cost'][$formatted_month])) {
+                    $financial_data['Cost'][$formatted_month] = $cost;
+                }
+            }
+        }
+    }
+}
+
+// --- PAGE RENDER ---
+if (!$project) {
+    http_response_code(404);
+    $page_title = "Project Not Found";
+} else {
+    $page_title = "Details for " . htmlspecialchars($project['name']);
+}
+
+?>
+<!DOCTYPE html>
+<html lang="en" data-bs-theme="dark">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title><?php echo $page_title; ?></title>
+    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.3/font/bootstrap-icons.min.css">
+    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap" rel="stylesheet">
+    <link rel="stylesheet" href="assets/css/custom.css?v=<?php echo time(); ?>">
+</head>
+<body>
+    <div class="top-navbar">
+        Project Financials
+    </div>
+    <div class="main-wrapper">
+        <nav class="sidebar">
+            <ul class="nav flex-column">
+                <li class="nav-item"><a class="nav-link" href="index.php"><i class="bi bi-people-fill me-2"></i>Roster</a></li>
+                <li class="nav-item"><a class="nav-link active" href="projects.php"><i class="bi bi-briefcase-fill me-2"></i>Projects</a></li>
+            </ul>
+        </nav>
+
+        <main class="content-wrapper">
+            <?php if (!$project): ?>
+                <div class="alert alert-danger">Project with ID <?php echo htmlspecialchars($project_id); ?> not found.</div>
+            <?php else: ?>
+                <div class="page-header">
+                    <h1 class="h2">Project: <?php echo htmlspecialchars($project['name']); ?></h1>
+                    <div class="header-actions">
+                        <a href="forecasting.php?projectId=<?php echo $project['id']; ?>" class="btn btn-success"><i class="bi bi-bar-chart-line-fill me-2"></i>Forecasting</a>
+                    </div>
+                </div>
+
+                <!-- Section 1: Project Information -->
+                <div class="card mb-4">
+                    <div class="card-header">
+                        <h5 class="card-title mb-0">Project Information</h5>
+                    </div>
+                    <div class="card-body">
+                        <div class="row">
+                            <div class="col-md-6">
+                                <dl class="row">
+                                    <dt class="col-sm-4">Name</dt>
+                                    <dd class="col-sm-8"><?php echo htmlspecialchars($project['name']); ?></dd>
+                                    <dt class="col-sm-4">WBS</dt>
+                                    <dd class="col-sm-8"><?php echo htmlspecialchars($project['wbs'] ?? 'N/A'); ?></dd>
+                                    <dt class="col-sm-4">Start Date</dt>
+                                    <dd class="col-sm-8"><?php echo htmlspecialchars($project['startDate']); ?></dd>
+                                    <dt class="col-sm-4">End Date</dt>
+                                    <dd class="col-sm-8"><?php echo htmlspecialchars($project['endDate']); ?></dd>
+                                </dl>
+                            </div>
+                            <div class="col-md-6">
+                                <dl class="row">
+                                    <dt class="col-sm-4">Budget</dt>
+                                    <dd class="col-sm-8">&euro;<?php echo number_format($project['budget'], 2); ?></dd>
+                                    <dt class="col-sm-4">Recoverability</dt>
+                                    <dd class="col-sm-8"><?php echo number_format($project['recoverability'], 2); ?>%</dd>
+                                    <dt class="col-sm-4">Target Margin</dt>
+                                    <dd class="col-sm-8"><?php echo number_format($project['targetMargin'], 2); ?>%</dd>
+                                </dl>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+                <!-- Section 2: Monthly Financials -->
+                <div class="card mb-4">
+                    <div class="card-header d-flex justify-content-between align-items-center">
+                        <h5 class="card-title mb-0">Monthly Financials</h5>
+                        <div class="actions">
+                            <button class="btn btn-secondary disabled" disabled><i class="bi bi-upload me-2"></i>Import</button>
+                            <a href="export_project_finance.php?project_id=<?php echo $project['id']; ?>" class="btn btn-secondary"><i class="bi bi-download me-2"></i>Export</a>
+                        </div>
+                    </div>
+                    <div class="table-responsive">
+                        <table class="table table-bordered table-hover">
+                            <thead>
+                                <tr class="text-center">
+                                    <th class="bg-body-tertiary" style="min-width: 150px;">Metric</th>
+                                    <?php foreach ($months as $month): ?>
+                                        <th><?php echo date('M Y', strtotime($month)); ?></th>
+                                    <?php endforeach; ?>
+                                </tr>
+                            </thead>
+                            <tbody>
+                                <?php foreach ($metrics as $metric): ?>
+                                <tr>
+                                    <td class="fw-bold bg-body-tertiary"><?php echo $metric; ?></td>
+                                    <?php foreach ($months as $month): ?>
+                                        <td class="text-end">
+                                            &euro;<?php echo number_format($financial_data[$metric][$month] ?? 0, 2); ?>
+                                        </td>
+                                    <?php endforeach; ?>
+                                </tr>
+                                <?php endforeach; ?>
+                            </tbody>
+                        </table>
+                    </div>
+                </div>
+
+            <?php endif; ?>
+        </main>
+    </div>
+
+<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/js/bootstrap.bundle.min.js"></script>
+</body>
+</html>

projects.php

@@ -20,6 +20,13 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST' && isset($_POST['action']) && $_POST['
                 ':recoverability' => (float)($_POST['recoverability'] ?? 100),
                 ':targetMargin' => (float)($_POST['targetMargin'] ?? 0),
             ]);
+
+            // Create initial forecasting version
+            $projectId = $pdo_form->lastInsertId();
+            $forecast_sql = "INSERT INTO forecasting (projectId, versionNumber, createdAt) VALUES (:projectId, 1, NOW())";
+            $forecast_stmt = $pdo_form->prepare($forecast_sql);
+            $forecast_stmt->execute([':projectId' => $projectId]);
+
             header("Location: " . $_SERVER['PHP_SELF']);
             exit();
         } catch (PDOException $e) {
@@ -99,7 +106,14 @@ function execute_sql_from_file($pdo, $filepath) {
 $projects_data = [];
 try {
     $pdo = db();
-    execute_sql_from_file($pdo, __DIR__ . '/db/migrations/002_create_projects_table.sql');
+
+    // Apply all migrations
+    $migration_files = glob(__DIR__ . '/db/migrations/*.sql');
+    sort($migration_files);
+    foreach ($migration_files as $file) {
+        execute_sql_from_file($pdo, $file);
+    }
+
     $stmt = $pdo->query("SELECT * FROM projects ORDER BY name");
     $projects_data = $stmt->fetchAll(PDO::FETCH_ASSOC);
 } catch (PDOException $e) {
@@ -191,18 +205,19 @@ try {
                                         <td><?php echo number_format($row['recoverability'], 2); ?>%</td>
                                         <td><?php echo number_format($row['targetMargin'], 2); ?>%</td>
                                         <td>
-                                                <div class="d-flex">
-                                                                                                    <button class="btn btn-sm btn-outline-primary me-2 edit-btn" 
+                                            <div class="d-flex">
+                                                <a href="project_details.php?id=<?php echo $row['id']; ?>" class="btn btn-sm btn-outline-info me-2">View</a>
+                                                <button class="btn btn-sm btn-outline-primary me-2 edit-btn" 
                                                         data-row='<?php echo htmlspecialchars(json_encode($row), ENT_QUOTES, 'UTF-8'); ?>'>
                                                     Edit
                                                 </button>
-                                                    <form action="projects.php" method="POST" onsubmit="return confirm('Are you sure you want to delete this item?');">
-                                                        <input type="hidden" name="action" value="delete_project">
-                                                        <input type="hidden" name="id" value="<?php echo $row['id']; ?>">
-                                                        <button type="submit" class="btn btn-sm btn-outline-danger">Delete</button>
-                                                    </form>
-                                                </div>
-                                            </td>
+                                                <form action="projects.php" method="POST" onsubmit="return confirm('Are you sure you want to delete this item?');">
+                                                    <input type="hidden" name="action" value="delete_project">
+                                                    <input type="hidden" name="id" value="<?php echo $row['id']; ?>">
+                                                    <button type="submit" class="btn btn-sm btn-outline-danger">Delete</button>
+                                                </form>
+                                            </div>
+                                        </td>
                                     </tr>
                                 <?php endforeach; ?>
                             <?php endif; ?>