Added trend line analysis page and blade file

app/Filament/Pages/TrendLineAnalysis.php

@@ -0,0 +1,126 @@
+<?php
+
+namespace App\Filament\Pages;
+
+use App\Filament\Widgets\TrendLineChart;
+use Filament\Pages\Page;
+use Filament\Pages\Dashboard\Concerns\HasFiltersForm;
+use App\Models\Plant;
+use Filament\Forms\Components\Select;
+use Filament\Forms\Form;
+use Filament\Forms\Components\DateTimePicker;
+use App\Models\MfmMeter;
+use Illuminate\Support\Facades\Auth;
+
+class TrendLineAnalysis extends Page
+{
+    use HasFiltersForm;
+    protected static ?string $navigationIcon = 'heroicon-o-document-text';
+
+    protected static string $view = 'filament.pages.trend-line-analysis';
+
+    protected static ?string $navigationGroup = 'PowerHouse DashBoard';
+
+     public function mount(): void
+   {
+       session()->forget(['selected_plant', 'selected_meter', 'from_datetime', 'to_datetime', 'parameter']);
+       $this->filtersForm->fill([
+            'selected_plant' => null,
+            'selected_meter' => null,
+            'from_datetime' => null,
+            'to_datetime' => null,
+            'parameter' => null,
+       ]);
+   }
+
+
+    public function filtersForm(Form $form): Form
+   {
+       return $form
+           ->statePath('filters')
+           ->schema([
+
+             DateTimePicker::make('from_datetime')
+                ->label('From DateTime')
+                ->required()
+                ->before('to_datetime')
+                ->reactive()
+                ->afterStateUpdated(function ($state) {
+                     $formatted = \Carbon\Carbon::parse($state)->format('Y-m-d H:i:s');
+                    session(['from_datetime' => $formatted]);
+                }),
+            DateTimePicker::make('to_datetime')
+                ->label('To DateTime')
+                ->required()
+                ->after('from_datetime')
+                ->reactive()
+                 ->afterStateUpdated(function ($state) {
+                    $formatted = \Carbon\Carbon::parse($state)->format('Y-m-d H:i:s');
+                        session(['to_datetime' => $formatted]);
+                }),
+             Select::make('plant')
+                   ->options(Plant::pluck('name', 'id'))
+                   ->label('Select Plant')
+                   ->reactive()
+                    ->afterStateUpdated(function ($state, callable $set) {
+                        session(['selected_plant' => $state]);
+                        // When plant changes, also reset meter_name
+                        $set('meter_name', null);
+                        session(['selected_meter' => null]);
+                       // dd($state);
+                    }),
+
+             Select::make('meter_name')
+                ->options(function ($get) {
+                    $plantId = $get('plant');
+                    // Return meter name/id pairs from mfm_meters where plant_id matches selected plant
+                    return $plantId ? MfmMeter::where('plant_id', $plantId)->pluck('name', 'id') : [];
+                })
+                ->label('Select Meter')
+                ->reactive()
+                 ->afterStateUpdated(function ($state) {
+                        session(['selected_meter' => $state]);
+                }),
+               Select::make('parameter')
+                ->options([
+                    'Phase Voltage' => 'Phase Voltage',
+                    'Line Voltage'  => 'Line Voltage',
+                    'Current'       => 'Current',
+                    'Active Power'  => 'Active Power',
+                    'Power Factor'  => 'Power Factor',
+                    'Units'         => 'Units',
+                ])
+                ->label('Select Parameter')
+                ->reactive()
+                ->afterStateUpdated(function ($state) {
+                        session(['parameter' => $state]);
+                }),
+
+           ])
+           ->columns(5);
+   }
+    // public static function getNavigationLabel(): string
+    // {
+    //     return 'Trend Chart Analysis';
+    // }
+    // public function getHeading(): string
+    // {
+    //     return 'Trend Chart Analysis';
+    // }
+
+
+    public function getWidgets(): array
+    {
+        $widgets = [];
+
+        if (TrendLineChart::canView()) {
+            $widgets[] = TrendLineChart::class;
+        }
+        return $widgets;
+    }
+
+    public static function canAccess(): bool
+    {
+        return Auth::check() && Auth::user()->can('view ems trend line analysis dashboard');
+    }
+}

resources/views/filament/pages/trend-line-analysis.blade.php

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+<x-filament-panels::page>
+ <div class="space-y-4">
+        {{-- Filters form --}}
+        {{ $this->filtersForm($this->form) }}
+
+        {{-- Chart widget --}}
+        <x-filament-widgets::widgets :widgets="$this->getWidgets()" />
+
+    </div>
+</x-filament-panels::page>