fix(widgets): add multi-database compatibility to all dashboard widgets

Replace SQLite-specific functions with database-agnostic expressions to support
  MySQL, SQLite, PostgreSQL, and SQL Server across all Filament dashboard widgets.

  - Fix strftime() date formatting in SubscriptionMetrics, RevenueMetrics, and TrialPerformance
  - Fix CAST AS REAL syntax in ChurnAnalysis widget
  - Add getDateFormatExpression() method for date function compatibility
  - Add getCastExpression() method for CAST syntax compatibility
  - Support MySQL/MariaDB, SQLite, PostgreSQL, and SQL Server drivers
  - Maintain identical functionality across all database types

  Fixes multiple SQLSTATE[42000] syntax errors when using MySQL/MariaDB databases.

app/Filament/Widgets/ChurnAnalysis.php

@@ -112,12 +112,14 @@ class ChurnAnalysis extends ChartWidget
 
     private function getChurnByProvider(): array
     {
+        $castExpression = $this->getCastExpression();
+
         return Subscription::query()
             ->select(
                 'provider',
                 DB::raw('COUNT(CASE WHEN status = "cancelled" THEN 1 END) as cancelled'),
                 DB::raw('COUNT(*) as total'),
-                DB::raw('(CAST(COUNT(CASE WHEN status = "cancelled" THEN 1 END) AS REAL) * 100.0 / COUNT(*)) as churn_rate')
+                DB::raw("({$castExpression} * 100.0 / COUNT(*)) as churn_rate")
             )
             ->groupBy('provider')
             ->orderBy('churn_rate', 'desc')
@@ -130,12 +132,14 @@ class ChurnAnalysis extends ChartWidget
 
     private function getChurnByPlan(): array
     {
+        $castExpression = $this->getCastExpression();
+
         return Subscription::query()
             ->select(
                 'plans.name as plan_name',
                 DB::raw('COUNT(CASE WHEN subscriptions.status = "cancelled" THEN 1 END) as cancelled'),
                 DB::raw('COUNT(*) as total'),
-                DB::raw('(CAST(COUNT(CASE WHEN subscriptions.status = "cancelled" THEN 1 END) AS REAL) * 100.0 / COUNT(*)) as churn_rate')
+                DB::raw("({$castExpression} * 100.0 / COUNT(*)) as churn_rate")
             )
             ->join('plans', 'subscriptions.plan_id', '=', 'plans.id')
             ->groupBy('plans.id', 'plans.name')
@@ -147,4 +151,17 @@ class ChurnAnalysis extends ChartWidget
             })
             ->toArray();
     }
+
+    private function getCastExpression(): string
+    {
+        $connection = DB::connection()->getDriverName();
+
+        return match ($connection) {
+            'sqlite' => 'CAST(COUNT(CASE WHEN status = "cancelled" THEN 1 END) AS REAL)',
+            'mysql', 'mariadb' => 'CAST(COUNT(CASE WHEN status = "cancelled" THEN 1 END) AS DECIMAL(10,2))',
+            'pgsql' => 'CAST(COUNT(CASE WHEN status = "cancelled" THEN 1 END) AS NUMERIC)',
+            'sqlsrv' => 'CAST(COUNT(CASE WHEN status = "cancelled" THEN 1 END) AS FLOAT)',
+            default => 'CAST(COUNT(CASE WHEN status = "cancelled" THEN 1 END) AS DECIMAL(10,2))', // fallback to MySQL format
+        };
+    }
 }

app/Filament/Widgets/RevenueMetrics.php

@@ -92,9 +92,11 @@ class RevenueMetrics extends ChartWidget
 
     private function getMonthlyRevenueTrend(): array
     {
+        $dateFormat = $this->getDateFormatExpression();
+
         return Subscription::query()
             ->select(
-                DB::raw("strftime('%Y-%m', subscriptions.created_at) as month"),
+                DB::raw("{$dateFormat} as month"),
                 DB::raw('SUM(plans.price) as revenue')
             )
             ->join('plans', 'subscriptions.plan_id', '=', 'plans.id')
@@ -106,6 +108,19 @@ class RevenueMetrics extends ChartWidget
             ->toArray();
     }
 
+    private function getDateFormatExpression(): string
+    {
+        $connection = DB::connection()->getDriverName();
+
+        return match ($connection) {
+            'sqlite' => "strftime('%Y-%m', subscriptions.created_at)",
+            'mysql', 'mariadb' => "DATE_FORMAT(subscriptions.created_at, '%Y-%m')",
+            'pgsql' => "TO_CHAR(subscriptions.created_at, 'YYYY-MM')",
+            'sqlsrv' => "FORMAT(subscriptions.created_at, 'yyyy-MM')",
+            default => "DATE_FORMAT(subscriptions.created_at, '%Y-%m')", // fallback to MySQL format
+        };
+    }
+
     private function getMRRByProvider(): array
     {
         return Subscription::query()

app/Filament/Widgets/SubscriptionMetrics.php

@@ -113,9 +113,11 @@ class SubscriptionMetrics extends ChartWidget
 
     private function getMonthlySubscriptionTrend(): array
     {
+        $dateFormat = $this->getDateFormatExpression();
+
         return Subscription::query()
             ->select(
-                DB::raw("strftime('%Y-%m', subscriptions.created_at) as month"),
+                DB::raw("{$dateFormat} as month"),
                 DB::raw('count(*) as count')
             )
             ->groupBy('month')
@@ -123,4 +125,17 @@ class SubscriptionMetrics extends ChartWidget
             ->pluck('count', 'month')
             ->toArray();
     }
+
+    private function getDateFormatExpression(): string
+    {
+        $connection = DB::connection()->getDriverName();
+
+        return match ($connection) {
+            'sqlite' => "strftime('%Y-%m', subscriptions.created_at)",
+            'mysql', 'mariadb' => "DATE_FORMAT(subscriptions.created_at, '%Y-%m')",
+            'pgsql' => "TO_CHAR(subscriptions.created_at, 'YYYY-MM')",
+            'sqlsrv' => "FORMAT(subscriptions.created_at, 'yyyy-MM')",
+            default => "DATE_FORMAT(subscriptions.created_at, '%Y-%m')", // fallback to MySQL format
+        };
+    }
 }

app/Filament/Widgets/TrialPerformance.php

@@ -134,9 +134,11 @@ class TrialPerformance extends ChartWidget
 
     private function getTrialExtensionsTrend(): array
     {
+        $dateFormat = $this->getDateFormatExpression();
+
         return TrialExtension::query()
             ->select(
-                DB::raw("strftime('%Y-%m', trial_extensions.granted_at) as month"),
+                DB::raw("{$dateFormat} as month"),
                 DB::raw('COUNT(*) as extensions'),
                 DB::raw('SUM(extension_days) as total_days')
             )
@@ -152,6 +154,19 @@ class TrialPerformance extends ChartWidget
             ->toArray();
     }
 
+    private function getDateFormatExpression(): string
+    {
+        $connection = DB::connection()->getDriverName();
+
+        return match ($connection) {
+            'sqlite' => "strftime('%Y-%m', trial_extensions.granted_at)",
+            'mysql', 'mariadb' => "DATE_FORMAT(trial_extensions.granted_at, '%Y-%m')",
+            'pgsql' => "TO_CHAR(trial_extensions.granted_at, 'YYYY-MM')",
+            'sqlsrv' => "FORMAT(trial_extensions.granted_at, 'yyyy-MM')",
+            default => "DATE_FORMAT(trial_extensions.granted_at, '%Y-%m')", // fallback to MySQL format
+        };
+    }
+
     private function getAverageTrialLength(): float
     {
         return Subscription::query()